Add bitcoinjs-bip38-2.0.2 library

[perso/Immae/Projets/Cryptomonnaies/BIP39.git] / bip39-standalone.html

diff --git a/bip39-standalone.html b/bip39-standalone.html
index 333f264449442caa796c21fce3a7dab06fc830ab..d5c207f7097dd91b09db16cf2baec0d01b47020f 100644 (file)
--- a/bip39-standalone.html
+++ b/bip39-standalone.html
@@ -4,20296 +4,48759 @@
         <meta charset="utf-8" />
         <title>BIP39 - Mnemonic Code</title>
         <style>/*!
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-        <meta content="Mnemonic code for generating deterministic keys" name="description"/>
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-        <meta content="bitcoin mnemonic converter" name="description" />
-        <meta content="Ian Coleman" name="author" />
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-    </head>
-    <body>
-        <div class="container">
-
-            <h1 class="text-center">Mnemonic Code Converter</h1>
-            <p class="version">v0.2.8</p>
-            <hr>
-            <div class="row">
-                <div class="col-md-12">
-                    <h2>Mnemonic</h2>
-                    <form class="form-horizontal" role="form">
-                        <div class="form-group">
-                            <div class="col-sm-2"></div>
-                            <div class="col-sm-10">
-                                <p>You can enter an existing BIP39 mnemonic, or generate a new random one. Typing your own twelve words will probably not work how you expect, since the words require a particular structure (the last word is a checksum).</p>
-                                <p>
-                                    For more info see the
-                                    <a href="https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki" target="_blank">BIP39 spec</a>.
-                                </p>
-                            </div>
-                        </div>
-                        <div class="form-group generate-container">
-                            <label class="col-sm-2 control-label"></label>
-                            <div class="col-sm-10">
-                                <div class="form-inline">
-                                    <div class="input-group-inline">
-                                        <span>Generate a random mnemonic, or enter your own below</span>:
-                                        <button class="btn generate">Generate</button>
-                                        <select id="strength" class="strength form-control">
-                                            <option value="3">3</option>
-                                            <option value="6">6</option>
-                                            <option value="9">9</option>
-                                            <option value="12">12</option>
-                                            <option value="15" selected>15</option>
-                                            <option value="18">18</option>
-                                            <option value="21">21</option>
-                                            <option value="24">24</option>
-                                        </select>
-                                        <span>words</span>
-                                    </div>
-                                </div>
-                            </div>
-                        </div>
-                        <div class="entropy-container hidden">
-                            <div class="form-group text-danger">
-                                <label class="col-sm-2 control-label">Warning</label>
-                                <div class="col-sm-10 form-control-static">
-                                    <span>Entropy is an advanced feature. Your mnemonic may be insecure if this feature is used incorrectly.</span>
-                                    <a href="#entropy-notes">Read more</a>
-                                </div>
-                            </div>
-                            <div class="form-group">
-                                <label for="entropy" class="col-sm-2 control-label">Entropy</label>
-                                <div class="col-sm-7">
-                                    <textarea id="entropy" rows="2" class="entropy form-control" placeholder="Accepts either binary, base 6, 6-sided dice, base 10, hexadecimal or cards"></textarea>
-                                    <div class="row filter-warning text-danger hidden">
-                                        <p class="col-sm-12">
-                                        <strong>
-                                        Some characters have been discarded
-                                        </strong>
-                                        </p>
-                                    </div>
-                                    <div class="row">
-                                        <label class="col-sm-3 control-label"><span class="more-info" title="Based on estimates from zxcvbn using Filtered Entropy">Time To Crack</span></label>
-                                        <div class="crack-time col-sm-3 form-control-static"></div>
-                                        <label class="col-sm-3 control-label">Event Count</label>
-                                        <div class="event-count col-sm-3 form-control-static"></div>
-                                    </div>
-                                    <div class="row">
-                                        <label class="col-sm-3 control-label">Entropy Type</label>
-                                        <div class="type col-sm-3 form-control-static"></div>
-                                        <label class="col-sm-3 control-label">Bits Per Event</label>
-                                        <div class="bits-per-event col-sm-3 form-control-static"></div>
-                                    </div>
-                                    <div class="row">
-                                        <label class="col-sm-3 control-label">Raw Entropy Words</label>
-                                        <div class="word-count col-sm-3 form-control-static"></div>
-                                        <label class="col-sm-3 control-label"><span class="more-info" title="Total bits of entropy may be less than indicated if any entropy event uses a weak source.">Total Bits</span></label>
-                                        <div class="bits col-sm-3 form-control-static"></div>
-                                    </div>
-                                    <label class="col-sm-3 control-label">Filtered Entropy</label>
-                                    <div class="filtered col-sm-9 form-control-static"></div>
-                                    <label class="col-sm-3 control-label">Raw Binary</label>
-                                    <div class="binary col-sm-9 form-control-static"></div>
-                                    <label class="col-sm-3 control-label">Mnemonic Length</label>
-                                    <div class="col-sm-9">
-                                        <select class="mnemonic-length form-control">
-                                            <option value="raw" selected>Use Raw Entropy (3 words per 32 bits)</option>
-                                            <option value="12">12 <span>Words</span></option>
-                                            <option value="15">15 <span>Words</option>
-                                            <option value="18">18 <span>Words</span></option>
-                                            <option value="21">21 <span>Words</span></option>
-                                            <option value="24">24 <span>Words</span></option>
-                                        </select>
-                                    </div>
-                                </div>
-                                <div class="col-sm-3">
-                                    <p>Valid entropy values include:</p>
-                                    <ul>
-                                        <li><strong>Binary</strong> [0-1]<br>101010011</li>
-                                        <li><strong>Base 6</strong> [0-5]<br>123434014</li>
-                                        <li><strong>Dice</strong> [1-6]<br>62535634</li>
-                                        <li><strong>Base 10</strong> [0-9]<br>90834528</li>
-                                        <li><strong>Hex</strong> [0-9A-F]<br>4187a8bfd9</li>
-                                        <li><strong>Card</strong> [A2-9TJQK][CDHS]<br>ahqs9dtc</li>
-                                    </ul>
-                                </div>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <div class="col-sm-2"></div>
-                            <div class="col-sm-10 checkbox">
-                                <label>
-                                    <input type="checkbox" class="use-entropy">
-                                    <span>Supply my own source of entropy</span>
-                                </label>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label class="col-sm-2 control-label">Mnemonic Language</label>
-                            <div class="col-sm-10 languages">
-                                <div class="form-control no-border">
-                                    <a href="#english">English</a>
-                                    <a href="#japanese" title="Japanese">日本語</a>
-                                    <a href="#spanish"  title="Spanish">Español</a>
-                                    <a href="#chinese_simplified"  title="Chinese (Simplified)">中文(简体)</a>
-                                    <a href="#chinese_traditional"  title="Chinese (Traditional)">中文(繁體)</a>
-                                    <a href="#french"  title="French">Français</a>
-                                    <a href="#italian"  title="Italian">Italiano</a>
-                                </div>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="phrase" class="col-sm-2 control-label">BIP39 Mnemonic</label>
-                            <div class="col-sm-10">
-                                <textarea id="phrase" class="phrase form-control" data-show-qr></textarea>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="passphrase" class="col-sm-2 control-label">BIP39 Passphrase (optional)</label>
-                            <div class="col-sm-10">
-                                <textarea id="passphrase" class="passphrase form-control"></textarea>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="seed" class="col-sm-2 control-label">BIP39 Seed</label>
-                            <div class="col-sm-10">
-                                <textarea id="seed" class="seed form-control" readonly="readonly" data-show-qr></textarea>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="network-phrase" class="col-sm-2 control-label">Coin</label>
-                            <div class="col-sm-10">
-                                <select id="network-phrase" class="network form-control">
-                                    <!-- populated by javascript -->
-                                </select>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="root-key" class="col-sm-2 control-label">BIP32 Root Key</label>
-                            <div class="col-sm-10">
-                                <textarea id="root-key" class="root-key form-control" data-show-qr></textarea>
-                            </div>
-                        </div>
-                        <div class="form-group litecoin-ltub-container hidden">
-                            <label for="litecoin-use-ltub" class="col-sm-2 control-label">Prefixes</label>
-                            <div class="col-sm-10 checkbox">
-                                <label>
-                                    <input type="checkbox" id="litecoin-use-ltub" class="litecoin-use-ltub">
-                                    Use <code>Ltpv / Ltub</code> instead of <code>xprv / xpub</code>
-                                </label>
-                            </div>
-                        </div>
-                    </form>
-                </div>
-            </div>
-
-            <hr>
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+@media print {
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+    border: 1px solid #999;
 
-            <div class="row">
-                <div class="col-md-12">
-                    <h2>Derivation Path</h2>
-                    <ul class="derivation-type nav nav-tabs" role="tablist">
-                        <li id="bip32-tab">
-                            <a href="#bip32" role="tab" data-toggle="tab">BIP32</a>
-                        </li>
-                        <li id="bip44-tab" class="active">
-                            <a href="#bip44" role="tab" data-toggle="tab">BIP44</a>
-                        </li>
-                        <li id="bip49-tab">
-                            <a href="#bip49" role="tab" data-toggle="tab">BIP49</a>
-                        </li>
-                    </ul>
-                    <div class="derivation-type tab-content">
-                        <div id="bip44" class="tab-pane active">
-                            <form class="form-horizontal" role="form">
-                                <br>
-                                <div class="col-sm-2"></div>
-                                <div class="col-sm-10">
-                                    <p>
-                                        For more info see the
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki" target="_blank">BIP44 spec</a>.
-                                    </p>
-                                </div>
-                                <div class="form-group">
-                                    <label for="purpose" class="col-sm-2 control-label">
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#purpose" target="_blank">Purpose</a>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <input id="purpose" type="text" class="purpose form-control" value="44" readonly>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="coin" class="col-sm-2 control-label">
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#registered-coin-types" target="_blank">Coin</a>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <input id="coin" type="text" class="coin form-control" value="0" readonly>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="account" class="col-sm-2 control-label">
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#account" target="_blank">Account</a>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <input id="account" type="text" class="account form-control" value="0">
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="change" class="col-sm-2 control-label">
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#change" target="_blank">External / Internal</a>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <input id="change" type="text" class="change form-control" value="0">
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label class="col-sm-2 control-label">
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <p>The account extended keys can be used for importing to most BIP44 compatible wallets, such as mycelium or electrum.</p>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="account-xprv" class="col-sm-2 control-label">
-                                        <span>Account Extended Private Key</span>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <textarea id="account-xprv" type="text" class="account-xprv form-control" readonly data-show-qr></textarea>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="account-xpub" class="col-sm-2 control-label">
-                                        <span>Account Extended Public Key</span>
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <textarea id="account-xpub" type="text" class="account-xpub form-control" readonly data-show-qr></textarea>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label class="col-sm-2 control-label">
-                                    </label>
-                                    <div class="col-sm-10">
-                                        <p>The BIP32 derivation path and extended keys are the basis for the derived addresses.</p>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="bip44-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
-                                    <div class="col-sm-10">
-                                        <input id="bip44-path" type="text" class="path form-control" value="m/44'/0'/0'/0" readonly="readonly">
-                                    </div>
-                                </div>
-                            </form>
-                        </div>
-                        <div id="bip32" class="tab-pane">
-                            <form class="form-horizontal" role="form">
-                                <br>
-                                <div class="col-sm-2"></div>
-                                <div class="col-sm-10">
-                                    <p>
-                                        For more info see the
-                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki" target="_blank">BIP32 spec</a>
-                                    </p>
-                                </div>
-                                <div class="form-group">
-                                    <label for="bip32-client" class="col-sm-2 control-label">Client</label>
-                                    <div class="col-sm-10">
-                                        <select id="bip32-client" class="client form-control">
-                                            <option value="custom">Custom derivation path</option>
-                                            <!-- populated by javascript -->
-                                        </select>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="bip32-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
-                                    <div class="col-sm-10">
-                                        <input id="bip32-path" type="text" class="path form-control" value="m/0">
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <div class="col-sm-2"></div>
-                                    <label class="col-sm-10">
-                                        <input class="hardened-addresses" type="checkbox">
-                                        <span>Use hardened addresses</span>
-                                    </label>
-                                </div>
-                                <div class="form-group">
-                                    <div class="col-sm-2"></div>
-                                    <label class="col-sm-10">
-                                        <input class="p2wpkh-nested-in-p2sh" type="checkbox">
-                                        <span>Use SegWit addresses (ie P2WPKH Nested In P2SH)</span>
-                                    </label>
-                                </div>
-                                <div class="form-group">
-                                    <label for="core-path" class="col-sm-2 control-label">Bitcoin Core</label>
-                                    <div class="col-sm-10">
-                                        <p class="form-control no-border">
-                                        Use path <code>m/0'/0'</code> with hardened addresses.
-                                        </p>
-                                        <p class="form-control no-border">
-                                            For more info see the
-                                            <a href="https://github.com/bitcoin/bitcoin/pull/8035" target="_blank">Bitcoin Core BIP32 implementation</a>
-                                        </p>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label for="core-path" class="col-sm-2 control-label">Multibit</label>
-                                    <div class="col-sm-10">
-                                        <p class="form-control no-border">
-                                            <span>Use path <code>m/0'/0</code>.</span>
-                                        </p>
-                                        <p class="form-control no-border">
-                                            <span>For more info see</span>
-                                            <a href="https://multibit.org/" target="_blank">MultiBit HD</a>
-                                        </p>
-                                    </div>
-                                </div>
-                                <div class="form-group">
-                                    <label class="col-sm-2 control-label">Block Explorers</label>
-                                    <div class="col-sm-10">
-                                        <p class="form-control no-border">
-                                            <span>Use path <code>m/44'/0'/0'</code>.</span>
-                                            <span>Only enter the <code>xpub</code> extended key into block explorer search fields, never the <code>xprv</code> key.</span>
-                                        </p>
-                                        <p class="form-control no-border">
-                                            <span>Can be used with</span>:
-                                            <a href="https://blockchain.info/" target="_blank">blockchain.info</a>
-                                        </p>
-                                    </div>
-                                </div>
-                            </form>
-                        </div>
-                        <div id="bip49" class="tab-pane">
-                            <form class="form-horizontal" role="form">
-                                <br>
-                                <div class="unavailable hidden">
-                                    <div class="form-group">
-                                        <div class="col-sm-2"></div>
-                                        <div class="col-sm-10">
-                                            <p>BIP49 is unavailable for this coin.</p>
-                                        </div>
-                                    </div>
-                                </div>
-                                <div class="available">
-                                    <div class="col-sm-2"></div>
-                                    <div class="col-sm-10">
-                                        <p>
-                                            For more info see the
-                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki" target="_blank">BIP49 spec</a>.
-                                        </p>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="purpose" class="col-sm-2 control-label">
-                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#purpose" target="_blank">Purpose</a>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <input id="purpose" type="text" class="purpose form-control" value="49" readonly>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="coin" class="col-sm-2 control-label">
-                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#registered-coin-types" target="_blank">Coin</a>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <input id="coin" type="text" class="coin form-control" value="0" readonly>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="account" class="col-sm-2 control-label">
-                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#account" target="_blank">Account</a>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <input id="account" type="text" class="account form-control" value="0">
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="change" class="col-sm-2 control-label">
-                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#change" target="_blank">External / Internal</a>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <input id="change" type="text" class="change form-control" value="0">
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label class="col-sm-2 control-label">
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <p>The account extended keys can be used for importing to most BIP49 compatible wallets.</p>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="account-xprv" class="col-sm-2 control-label">
-                                            <span>Account Extended Private Key</span>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <textarea id="account-xprv" type="text" class="account-xprv form-control" readonly data-show-qr></textarea>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="account-xpub" class="col-sm-2 control-label">
-                                            <span>Account Extended Public Key</span>
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <textarea id="account-xpub" type="text" class="account-xpub form-control" readonly data-show-qr></textarea>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label class="col-sm-2 control-label">
-                                        </label>
-                                        <div class="col-sm-10">
-                                            <p>The BIP32 derivation path and extended keys are the basis for the derived addresses.</p>
-                                        </div>
-                                    </div>
-                                    <div class="form-group">
-                                        <label for="bip49-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
-                                        <div class="col-sm-10">
-                                            <input id="bip49-path" type="text" class="path form-control" value="m/49'/0'/0'/0" readonly="readonly">
-                                        </div>
-                                    </div>
-                                </div>
-                            </form>
-                        </div>
-                    </div>
-                    <form class="form-horizontal" role="form">
-                        <div class="form-group">
-                            <label for="extended-priv-key" class="col-sm-2 control-label">BIP32 Extended Private Key</label>
-                            <div class="col-sm-10">
-                                <textarea id="extended-priv-key" class="extended-priv-key form-control" readonly="readonly" data-show-qr></textarea>
-                            </div>
-                        </div>
-                        <div class="form-group">
-                            <label for="extended-pub-key" class="col-sm-2 control-label">BIP32 Extended Public Key</label>
-                            <div class="col-sm-10">
-                                <textarea id="extended-pub-key" class="extended-pub-key form-control" readonly="readonly" data-show-qr></textarea>
-                            </div>
-                        </div>
-                    </form>
-                </div>
-            </div>
+    page-break-inside: avoid;
+  }
+  thead {
+    display: table-header-group;
+  }
+  tr,
+  img {
+    page-break-inside: avoid;
+  }
+  img {
+    max-width: 100% !important;
+  }
+  p,
+  h2,
+  h3 {
+    orphans: 3;
+    widows: 3;
+  }
+  h2,
+  h3 {
+    page-break-after: avoid;
+  }
+  .navbar {
+    display: none;
+  }
+  .btn > .caret,
+  .dropup > .btn > .caret {
+    border-top-color: #000 !important;
+  }
+  .label {
+    border: 1px solid #000;
+  }
+  .table {
+    border-collapse: collapse !important;
+  }
+  .table td,
+  .table th {
+    background-color: #fff !important;
+  }
+  .table-bordered th,
+  .table-bordered td {
+    border: 1px solid #ddd !important;
+  }
+}
+@font-face {
+  font-family: 'Glyphicons Halflings';
 
-            <hr>
+  src: url('../fonts/glyphicons-halflings-regular.eot');
+  src: url('../fonts/glyphicons-halflings-regular.eot?#iefix') format('embedded-opentype'), url('../fonts/glyphicons-halflings-regular.woff2') format('woff2'), url('../fonts/glyphicons-halflings-regular.woff') format('woff'), url('../fonts/glyphicons-halflings-regular.ttf') format('truetype'), url('../fonts/glyphicons-halflings-regular.svg#glyphicons_halflingsregular') format('svg');
+}
+.glyphicon {
+  position: relative;
+  top: 1px;
+  display: inline-block;
+  font-family: 'Glyphicons Halflings';
+  font-style: normal;
+  font-weight: normal;
+  line-height: 1;
 
-            <div class="row">
-                <div class="col-md-12">
-                    <h2>Derived Addresses</h2>
-                    <p>Note these addreses are derived from the BIP32 Extended Key</p>
-                </div>
-                <div class="col-md-12 use-bitpay-addresses-container hidden">
-                    <div class="checkbox">
-                        <label>
-                            <input type="checkbox" class="use-bitpay-addresses">
-                            <span>Use BitPay-style addresses for Bitcoin Cash (ie starting with 'C' instead of '1')</span>
-                        </label>
-                    </div>
-                </div>
-                <div class="col-md-12">
-                    <table class="table table-striped">
-                        <thead>
-                            <th>
-                                <div class="input-group">
-                                    <span>Path</span>&nbsp;&nbsp;
-                                    <button class="index-toggle">Toggle</button>
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+.glyphicon-asterisk:before {
+  content: "\002a";
+}
+.glyphicon-plus:before {
+  content: "\002b";
+}
+.glyphicon-euro:before,
+.glyphicon-eur:before {
+  content: "\20ac";
+}
+.glyphicon-minus:before {
+  content: "\2212";
+}
+.glyphicon-cloud:before {
+  content: "\2601";
+}
+.glyphicon-envelope:before {
+  content: "\2709";
+}
+.glyphicon-pencil:before {
+  content: "\270f";
+}
+.glyphicon-glass:before {
+  content: "\e001";
+}
+.glyphicon-music:before {
+  content: "\e002";
+}
+.glyphicon-search:before {
+  content: "\e003";
+}
+.glyphicon-heart:before {
+  content: "\e005";
+}
+.glyphicon-star:before {
+  content: "\e006";
+}
+.glyphicon-star-empty:before {
+  content: "\e007";
+}
+.glyphicon-user:before {
+  content: "\e008";
+}
+.glyphicon-film:before {
+  content: "\e009";
+}
+.glyphicon-th-large:before {
+  content: "\e010";
+}
+.glyphicon-th:before {
+  content: "\e011";
+}
+.glyphicon-th-list:before {
+  content: "\e012";
+}
+.glyphicon-ok:before {
+  content: "\e013";
+}
+.glyphicon-remove:before {
+  content: "\e014";
+}
+.glyphicon-zoom-in:before {
+  content: "\e015";
+}
+.glyphicon-zoom-out:before {
+  content: "\e016";
+}
+.glyphicon-off:before {
+  content: "\e017";
+}
+.glyphicon-signal:before {
+  content: "\e018";
+}
+.glyphicon-cog:before {
+  content: "\e019";
+}
+.glyphicon-trash:before {
+  content: "\e020";
+}
+.glyphicon-home:before {
+  content: "\e021";
+}
+.glyphicon-file:before {
+  content: "\e022";
+}
+.glyphicon-time:before {
+  content: "\e023";
+}
+.glyphicon-road:before {
+  content: "\e024";
+}
+.glyphicon-download-alt:before {
+  content: "\e025";
+}
+.glyphicon-download:before {
+  content: "\e026";
+}
+.glyphicon-upload:before {
+  content: "\e027";
+}
+.glyphicon-inbox:before {
+  content: "\e028";
+}
+.glyphicon-play-circle:before {
+  content: "\e029";
+}
+.glyphicon-repeat:before {
+  content: "\e030";
+}
+.glyphicon-refresh:before {
+  content: "\e031";
+}
+.glyphicon-list-alt:before {
+  content: "\e032";
+}
+.glyphicon-lock:before {
+  content: "\e033";
+}
+.glyphicon-flag:before {
+  content: "\e034";
+}
+.glyphicon-headphones:before {
+  content: "\e035";
+}
+.glyphicon-volume-off:before {
+  content: "\e036";
+}
+.glyphicon-volume-down:before {
+  content: "\e037";
+}
+.glyphicon-volume-up:before {
+  content: "\e038";
+}
+.glyphicon-qrcode:before {
+  content: "\e039";
+}
+.glyphicon-barcode:before {
+  content: "\e040";
+}
+.glyphicon-tag:before {
+  content: "\e041";
+}
+.glyphicon-tags:before {
+  content: "\e042";
+}
+.glyphicon-book:before {
+  content: "\e043";
+}
+.glyphicon-bookmark:before {
+  content: "\e044";
+}
+.glyphicon-print:before {
+  content: "\e045";
+}
+.glyphicon-camera:before {
+  content: "\e046";
+}
+.glyphicon-font:before {
+  content: "\e047";
+}
+.glyphicon-bold:before {
+  content: "\e048";
+}
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+  content: "\e049";
+}
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+  content: "\e050";
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+  content: "\e051";
+}
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+  content: "\e052";
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+  content: "\e054";
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+  content: "\e059";
+}
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+  content: "\e060";
+}
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+  content: "\e062";
+}
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+  content: "\e063";
+}
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+  content: "\e064";
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+  content: "\e065";
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+  content: "\e066";
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+  content: "\e067";
+}
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+  content: "\e068";
+}
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+  content: "\e069";
+}
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+}
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+}
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+  content: "\e072";
+}
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+  content: "\e073";
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+  content: "\e074";
+}
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+  content: "\e075";
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+}
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+}
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+  content: "\e078";
+}
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+  content: "\e079";
+}
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+  content: "\e080";
+}
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+  content: "\e081";
+}
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+  content: "\e082";
+}
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+  content: "\e083";
+}
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+  content: "\e084";
+}
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+  content: "\e085";
+}
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+  content: "\e086";
+}
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+  content: "\e087";
+}
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+  content: "\e088";
+}
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+  content: "\e089";
+}
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+  content: "\e090";
+}
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+  content: "\e091";
+}
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+  content: "\e092";
+}
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+  content: "\e093";
+}
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+  content: "\e094";
+}
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+  content: "\e095";
+}
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+  content: "\e096";
+}
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+}
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+  content: "\e103";
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+}
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+}
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+  content: "\e107";
+}
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+  content: "\e108";
+}
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+  content: "\e110";
+}
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+  content: "\e111";
+}
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+  content: "\e112";
+}
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+  content: "\e113";
+}
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+}
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+  content: "\e115";
+}
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+  content: "\e116";
+}
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+  content: "\e117";
+}
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+  content: "\e118";
+}
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+  content: "\e119";
+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e143";
+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e151";
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+}
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+}
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+}
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+  content: "\e159";
+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e179";
+}
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+  content: "\e180";
+}
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+  content: "\e181";
+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e194";
+}
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+  content: "\e195";
+}
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+  content: "\e197";
+}
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+  content: "\e198";
+}
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e209";
+}
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+}
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+}
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+}
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+}
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+  content: "\e214";
+}
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+  content: "\e215";
+}
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+  content: "\e216";
+}
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+  content: "\26fa";
+}
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+  content: "\e218";
+}
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+  content: "\e219";
+}
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+  content: "\f8ff";
+}
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+  content: "\e221";
+}
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+  content: "\231b";
+}
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+}
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+  content: "\e224";
+}
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+}
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+  content: "\e226";
+}
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+  content: "\e227";
+}
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+  content: "\e227";
+}
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+  content: "\e227";
+}
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+  content: "\00a5";
+}
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+  content: "\00a5";
+}
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+  content: "\20bd";
+}
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+  content: "\20bd";
+}
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+  content: "\e230";
+}
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+  content: "\e231";
+}
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+  content: "\e232";
+}
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+  content: "\e233";
+}
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+  content: "\e234";
+}
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+  content: "\e235";
+}
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+  content: "\e236";
+}
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+  content: "\e237";
+}
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+  content: "\e238";
+}
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+  content: "\e239";
+}
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+  content: "\e240";
+}
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+  content: "\e241";
+}
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+  content: "\e242";
+}
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+  content: "\e243";
+}
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+  content: "\e244";
+}
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+  content: "\e245";
+}
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+  content: "\e246";
+}
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+  content: "\e247";
+}
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+  content: "\e248";
+}
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+  content: "\e249";
+}
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+}
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+}
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+}
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+}
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+}
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+  content: "\e255";
+}
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+  content: "\e256";
+}
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+  content: "\e257";
+}
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+  content: "\e258";
+}
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+  content: "\e259";
+}
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+  content: "\e260";
+}
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+  -webkit-box-sizing: border-box;
+     -moz-box-sizing: border-box;
+          box-sizing: border-box;
+}
+*:before,
+*:after {
+  -webkit-box-sizing: border-box;
+     -moz-box-sizing: border-box;
+          box-sizing: border-box;
+}
+html {
+  font-size: 10px;
+
+  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
+}
+body {
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: 14px;
+  line-height: 1.42857143;
+  color: #333;
+  background-color: #fff;
+}
+input,
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+select,
+textarea {
+  font-family: inherit;
+  font-size: inherit;
+  line-height: inherit;
+}
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+  color: #337ab7;
+  text-decoration: none;
+}
+a:hover,
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+  color: #23527c;
+  text-decoration: underline;
+}
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+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+figure {
+  margin: 0;
+}
+img {
+  vertical-align: middle;
+}
+.img-responsive,
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+.thumbnail a > img,
+.carousel-inner > .item > img,
+.carousel-inner > .item > a > img {
+  display: block;
+  max-width: 100%;
+  height: auto;
+}
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+  border-radius: 6px;
+}
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+  display: inline-block;
+  max-width: 100%;
+  height: auto;
+  padding: 4px;
+  line-height: 1.42857143;
+  background-color: #fff;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  -webkit-transition: all .2s ease-in-out;
+       -o-transition: all .2s ease-in-out;
+          transition: all .2s ease-in-out;
+}
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+  border-radius: 50%;
+}
+hr {
+  margin-top: 20px;
+  margin-bottom: 20px;
+  border: 0;
+  border-top: 1px solid #eee;
+}
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+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  border: 0;
+}
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+  position: static;
+  width: auto;
+  height: auto;
+  margin: 0;
+  overflow: visible;
+  clip: auto;
+}
+[role="button"] {
+  cursor: pointer;
+}
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+  font-weight: 500;
+  line-height: 1.1;
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+}
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+  font-weight: normal;
+  line-height: 1;
+  color: #777;
+}
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+}
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+}
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+}
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+}
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+  margin-bottom: 20px;
+  font-size: 16px;
+  font-weight: 300;
+  line-height: 1.4;
+}
+@media (min-width: 768px) {
+  .lead {
+    font-size: 21px;
+  }
+}
+small,
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+  font-size: 85%;
+}
+mark,
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+  padding: .2em;
+  background-color: #fcf8e3;
+}
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+}
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+}
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+  text-align: center;
+}
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+  text-align: justify;
+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  color: #a94442;
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+  background-color: #337ab7;
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+}
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+}
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+}
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+}
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+}
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+}
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+}
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+  padding-bottom: 9px;
+  margin: 40px 0 20px;
+  border-bottom: 1px solid #eee;
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+  margin-bottom: 10px;
+}
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+}
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+  padding-left: 0;
+  margin-left: -5px;
+  list-style: none;
+}
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+  display: inline-block;
+  padding-right: 5px;
+  padding-left: 5px;
+}
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+  margin-bottom: 20px;
+}
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+}
+dt {
+  font-weight: bold;
+}
+dd {
+  margin-left: 0;
+}
+@media (min-width: 768px) {
+  .dl-horizontal dt {
+    float: left;
+    width: 160px;
+    overflow: hidden;
+    clear: left;
+    text-align: right;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+  }
+  .dl-horizontal dd {
+    margin-left: 180px;
+  }
+}
+abbr[title],
+abbr[data-original-title] {
+  cursor: help;
+  border-bottom: 1px dotted #777;
+}
+.initialism {
+  font-size: 90%;
+  text-transform: uppercase;
+}
+blockquote {
+  padding: 10px 20px;
+  margin: 0 0 20px;
+  font-size: 17.5px;
+  border-left: 5px solid #eee;
+}
+blockquote p:last-child,
+blockquote ul:last-child,
+blockquote ol:last-child {
+  margin-bottom: 0;
+}
+blockquote footer,
+blockquote small,
+blockquote .small {
+  display: block;
+  font-size: 80%;
+  line-height: 1.42857143;
+  color: #777;
+}
+blockquote footer:before,
+blockquote small:before,
+blockquote .small:before {
+  content: '\2014 \00A0';
+}
+.blockquote-reverse,
+blockquote.pull-right {
+  padding-right: 15px;
+  padding-left: 0;
+  text-align: right;
+  border-right: 5px solid #eee;
+  border-left: 0;
+}
+.blockquote-reverse footer:before,
+blockquote.pull-right footer:before,
+.blockquote-reverse small:before,
+blockquote.pull-right small:before,
+.blockquote-reverse .small:before,
+blockquote.pull-right .small:before {
+  content: '';
+}
+.blockquote-reverse footer:after,
+blockquote.pull-right footer:after,
+.blockquote-reverse small:after,
+blockquote.pull-right small:after,
+.blockquote-reverse .small:after,
+blockquote.pull-right .small:after {
+  content: '\00A0 \2014';
+}
+address {
+  margin-bottom: 20px;
+  font-style: normal;
+  line-height: 1.42857143;
+}
+code,
+kbd,
+pre,
+samp {
+  font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
+}
+code {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: #c7254e;
+  background-color: #f9f2f4;
+  border-radius: 4px;
+}
+kbd {
+  padding: 2px 4px;
+  font-size: 90%;
+  color: #fff;
+  background-color: #333;
+  border-radius: 3px;
+  -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .25);
+          box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .25);
+}
+kbd kbd {
+  padding: 0;
+  font-size: 100%;
+  font-weight: bold;
+  -webkit-box-shadow: none;
+          box-shadow: none;
+}
+pre {
+  display: block;
+  padding: 9.5px;
+  margin: 0 0 10px;
+  font-size: 13px;
+  line-height: 1.42857143;
+  color: #333;
+  word-break: break-all;
+  word-wrap: break-word;
+  background-color: #f5f5f5;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+}
+pre code {
+  padding: 0;
+  font-size: inherit;
+  color: inherit;
+  white-space: pre-wrap;
+  background-color: transparent;
+  border-radius: 0;
+}
+.pre-scrollable {
+  max-height: 340px;
+  overflow-y: scroll;
+}
+.container {
+  padding-right: 15px;
+  padding-left: 15px;
+  margin-right: auto;
+  margin-left: auto;
+}
+@media (min-width: 768px) {
+  .container {
+    width: 750px;
+  }
+}
+@media (min-width: 992px) {
+  .container {
+    width: 970px;
+  }
+}
+@media (min-width: 1200px) {
+  .container {
+    width: 1170px;
+  }
+}
+.container-fluid {
+  padding-right: 15px;
+  padding-left: 15px;
+  margin-right: auto;
+  margin-left: auto;
+}
+.row {
+  margin-right: -15px;
+  margin-left: -15px;
+}
+.col-xs-1, .col-sm-1, .col-md-1, .col-lg-1, .col-xs-2, .col-sm-2, .col-md-2, .col-lg-2, .col-xs-3, .col-sm-3, .col-md-3, .col-lg-3, .col-xs-4, .col-sm-4, .col-md-4, .col-lg-4, .col-xs-5, .col-sm-5, .col-md-5, .col-lg-5, .col-xs-6, .col-sm-6, .col-md-6, .col-lg-6, .col-xs-7, .col-sm-7, .col-md-7, .col-lg-7, .col-xs-8, .col-sm-8, .col-md-8, .col-lg-8, .col-xs-9, .col-sm-9, .col-md-9, .col-lg-9, .col-xs-10, .col-sm-10, .col-md-10, .col-lg-10, .col-xs-11, .col-sm-11, .col-md-11, .col-lg-11, .col-xs-12, .col-sm-12, .col-md-12, .col-lg-12 {
+  position: relative;
+  min-height: 1px;
+  padding-right: 15px;
+  padding-left: 15px;
+}
+.col-xs-1, .col-xs-2, .col-xs-3, .col-xs-4, .col-xs-5, .col-xs-6, .col-xs-7, .col-xs-8, .col-xs-9, .col-xs-10, .col-xs-11, .col-xs-12 {
+  float: left;
+}
+.col-xs-12 {
+  width: 100%;
+}
+.col-xs-11 {
+  width: 91.66666667%;
+}
+.col-xs-10 {
+  width: 83.33333333%;
+}
+.col-xs-9 {
+  width: 75%;
+}
+.col-xs-8 {
+  width: 66.66666667%;
+}
+.col-xs-7 {
+  width: 58.33333333%;
+}
+.col-xs-6 {
+  width: 50%;
+}
+.col-xs-5 {
+  width: 41.66666667%;
+}
+.col-xs-4 {
+  width: 33.33333333%;
+}
+.col-xs-3 {
+  width: 25%;
+}
+.col-xs-2 {
+  width: 16.66666667%;
+}
+.col-xs-1 {
+  width: 8.33333333%;
+}
+.col-xs-pull-12 {
+  right: 100%;
+}
+.col-xs-pull-11 {
+  right: 91.66666667%;
+}
+.col-xs-pull-10 {
+  right: 83.33333333%;
+}
+.col-xs-pull-9 {
+  right: 75%;
+}
+.col-xs-pull-8 {
+  right: 66.66666667%;
+}
+.col-xs-pull-7 {
+  right: 58.33333333%;
+}
+.col-xs-pull-6 {
+  right: 50%;
+}
+.col-xs-pull-5 {
+  right: 41.66666667%;
+}
+.col-xs-pull-4 {
+  right: 33.33333333%;
+}
+.col-xs-pull-3 {
+  right: 25%;
+}
+.col-xs-pull-2 {
+  right: 16.66666667%;
+}
+.col-xs-pull-1 {
+  right: 8.33333333%;
+}
+.col-xs-pull-0 {
+  right: auto;
+}
+.col-xs-push-12 {
+  left: 100%;
+}
+.col-xs-push-11 {
+  left: 91.66666667%;
+}
+.col-xs-push-10 {
+  left: 83.33333333%;
+}
+.col-xs-push-9 {
+  left: 75%;
+}
+.col-xs-push-8 {
+  left: 66.66666667%;
+}
+.col-xs-push-7 {
+  left: 58.33333333%;
+}
+.col-xs-push-6 {
+  left: 50%;
+}
+.col-xs-push-5 {
+  left: 41.66666667%;
+}
+.col-xs-push-4 {
+  left: 33.33333333%;
+}
+.col-xs-push-3 {
+  left: 25%;
+}
+.col-xs-push-2 {
+  left: 16.66666667%;
+}
+.col-xs-push-1 {
+  left: 8.33333333%;
+}
+.col-xs-push-0 {
+  left: auto;
+}
+.col-xs-offset-12 {
+  margin-left: 100%;
+}
+.col-xs-offset-11 {
+  margin-left: 91.66666667%;
+}
+.col-xs-offset-10 {
+  margin-left: 83.33333333%;
+}
+.col-xs-offset-9 {
+  margin-left: 75%;
+}
+.col-xs-offset-8 {
+  margin-left: 66.66666667%;
+}
+.col-xs-offset-7 {
+  margin-left: 58.33333333%;
+}
+.col-xs-offset-6 {
+  margin-left: 50%;
+}
+.col-xs-offset-5 {
+  margin-left: 41.66666667%;
+}
+.col-xs-offset-4 {
+  margin-left: 33.33333333%;
+}
+.col-xs-offset-3 {
+  margin-left: 25%;
+}
+.col-xs-offset-2 {
+  margin-left: 16.66666667%;
+}
+.col-xs-offset-1 {
+  margin-left: 8.33333333%;
+}
+.col-xs-offset-0 {
+  margin-left: 0;
+}
+@media (min-width: 768px) {
+  .col-sm-1, .col-sm-2, .col-sm-3, .col-sm-4, .col-sm-5, .col-sm-6, .col-sm-7, .col-sm-8, .col-sm-9, .col-sm-10, .col-sm-11, .col-sm-12 {
+    float: left;
+  }
+  .col-sm-12 {
+    width: 100%;
+  }
+  .col-sm-11 {
+    width: 91.66666667%;
+  }
+  .col-sm-10 {
+    width: 83.33333333%;
+  }
+  .col-sm-9 {
+    width: 75%;
+  }
+  .col-sm-8 {
+    width: 66.66666667%;
+  }
+  .col-sm-7 {
+    width: 58.33333333%;
+  }
+  .col-sm-6 {
+    width: 50%;
+  }
+  .col-sm-5 {
+    width: 41.66666667%;
+  }
+  .col-sm-4 {
+    width: 33.33333333%;
+  }
+  .col-sm-3 {
+    width: 25%;
+  }
+  .col-sm-2 {
+    width: 16.66666667%;
+  }
+  .col-sm-1 {
+    width: 8.33333333%;
+  }
+  .col-sm-pull-12 {
+    right: 100%;
+  }
+  .col-sm-pull-11 {
+    right: 91.66666667%;
+  }
+  .col-sm-pull-10 {
+    right: 83.33333333%;
+  }
+  .col-sm-pull-9 {
+    right: 75%;
+  }
+  .col-sm-pull-8 {
+    right: 66.66666667%;
+  }
+  .col-sm-pull-7 {
+    right: 58.33333333%;
+  }
+  .col-sm-pull-6 {
+    right: 50%;
+  }
+  .col-sm-pull-5 {
+    right: 41.66666667%;
+  }
+  .col-sm-pull-4 {
+    right: 33.33333333%;
+  }
+  .col-sm-pull-3 {
+    right: 25%;
+  }
+  .col-sm-pull-2 {
+    right: 16.66666667%;
+  }
+  .col-sm-pull-1 {
+    right: 8.33333333%;
+  }
+  .col-sm-pull-0 {
+    right: auto;
+  }
+  .col-sm-push-12 {
+    left: 100%;
+  }
+  .col-sm-push-11 {
+    left: 91.66666667%;
+  }
+  .col-sm-push-10 {
+    left: 83.33333333%;
+  }
+  .col-sm-push-9 {
+    left: 75%;
+  }
+  .col-sm-push-8 {
+    left: 66.66666667%;
+  }
+  .col-sm-push-7 {
+    left: 58.33333333%;
+  }
+  .col-sm-push-6 {
+    left: 50%;
+  }
+  .col-sm-push-5 {
+    left: 41.66666667%;
+  }
+  .col-sm-push-4 {
+    left: 33.33333333%;
+  }
+  .col-sm-push-3 {
+    left: 25%;
+  }
+  .col-sm-push-2 {
+    left: 16.66666667%;
+  }
+  .col-sm-push-1 {
+    left: 8.33333333%;
+  }
+  .col-sm-push-0 {
+    left: auto;
+  }
+  .col-sm-offset-12 {
+    margin-left: 100%;
+  }
+  .col-sm-offset-11 {
+    margin-left: 91.66666667%;
+  }
+  .col-sm-offset-10 {
+    margin-left: 83.33333333%;
+  }
+  .col-sm-offset-9 {
+    margin-left: 75%;
+  }
+  .col-sm-offset-8 {
+    margin-left: 66.66666667%;
+  }
+  .col-sm-offset-7 {
+    margin-left: 58.33333333%;
+  }
+  .col-sm-offset-6 {
+    margin-left: 50%;
+  }
+  .col-sm-offset-5 {
+    margin-left: 41.66666667%;
+  }
+  .col-sm-offset-4 {
+    margin-left: 33.33333333%;
+  }
+  .col-sm-offset-3 {
+    margin-left: 25%;
+  }
+  .col-sm-offset-2 {
+    margin-left: 16.66666667%;
+  }
+  .col-sm-offset-1 {
+    margin-left: 8.33333333%;
+  }
+  .col-sm-offset-0 {
+    margin-left: 0;
+  }
+}
+@media (min-width: 992px) {
+  .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6, .col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12 {
+    float: left;
+  }
+  .col-md-12 {
+    width: 100%;
+  }
+  .col-md-11 {
+    width: 91.66666667%;
+  }
+  .col-md-10 {
+    width: 83.33333333%;
+  }
+  .col-md-9 {
+    width: 75%;
+  }
+  .col-md-8 {
+    width: 66.66666667%;
+  }
+  .col-md-7 {
+    width: 58.33333333%;
+  }
+  .col-md-6 {
+    width: 50%;
+  }
+  .col-md-5 {
+    width: 41.66666667%;
+  }
+  .col-md-4 {
+    width: 33.33333333%;
+  }
+  .col-md-3 {
+    width: 25%;
+  }
+  .col-md-2 {
+    width: 16.66666667%;
+  }
+  .col-md-1 {
+    width: 8.33333333%;
+  }
+  .col-md-pull-12 {
+    right: 100%;
+  }
+  .col-md-pull-11 {
+    right: 91.66666667%;
+  }
+  .col-md-pull-10 {
+    right: 83.33333333%;
+  }
+  .col-md-pull-9 {
+    right: 75%;
+  }
+  .col-md-pull-8 {
+    right: 66.66666667%;
+  }
+  .col-md-pull-7 {
+    right: 58.33333333%;
+  }
+  .col-md-pull-6 {
+    right: 50%;
+  }
+  .col-md-pull-5 {
+    right: 41.66666667%;
+  }
+  .col-md-pull-4 {
+    right: 33.33333333%;
+  }
+  .col-md-pull-3 {
+    right: 25%;
+  }
+  .col-md-pull-2 {
+    right: 16.66666667%;
+  }
+  .col-md-pull-1 {
+    right: 8.33333333%;
+  }
+  .col-md-pull-0 {
+    right: auto;
+  }
+  .col-md-push-12 {
+    left: 100%;
+  }
+  .col-md-push-11 {
+    left: 91.66666667%;
+  }
+  .col-md-push-10 {
+    left: 83.33333333%;
+  }
+  .col-md-push-9 {
+    left: 75%;
+  }
+  .col-md-push-8 {
+    left: 66.66666667%;
+  }
+  .col-md-push-7 {
+    left: 58.33333333%;
+  }
+  .col-md-push-6 {
+    left: 50%;
+  }
+  .col-md-push-5 {
+    left: 41.66666667%;
+  }
+  .col-md-push-4 {
+    left: 33.33333333%;
+  }
+  .col-md-push-3 {
+    left: 25%;
+  }
+  .col-md-push-2 {
+    left: 16.66666667%;
+  }
+  .col-md-push-1 {
+    left: 8.33333333%;
+  }
+  .col-md-push-0 {
+    left: auto;
+  }
+  .col-md-offset-12 {
+    margin-left: 100%;
+  }
+  .col-md-offset-11 {
+    margin-left: 91.66666667%;
+  }
+  .col-md-offset-10 {
+    margin-left: 83.33333333%;
+  }
+  .col-md-offset-9 {
+    margin-left: 75%;
+  }
+  .col-md-offset-8 {
+    margin-left: 66.66666667%;
+  }
+  .col-md-offset-7 {
+    margin-left: 58.33333333%;
+  }
+  .col-md-offset-6 {
+    margin-left: 50%;
+  }
+  .col-md-offset-5 {
+    margin-left: 41.66666667%;
+  }
+  .col-md-offset-4 {
+    margin-left: 33.33333333%;
+  }
+  .col-md-offset-3 {
+    margin-left: 25%;
+  }
+  .col-md-offset-2 {
+    margin-left: 16.66666667%;
+  }
+  .col-md-offset-1 {
+    margin-left: 8.33333333%;
+  }
+  .col-md-offset-0 {
+    margin-left: 0;
+  }
+}
+@media (min-width: 1200px) {
+  .col-lg-1, .col-lg-2, .col-lg-3, .col-lg-4, .col-lg-5, .col-lg-6, .col-lg-7, .col-lg-8, .col-lg-9, .col-lg-10, .col-lg-11, .col-lg-12 {
+    float: left;
+  }
+  .col-lg-12 {
+    width: 100%;
+  }
+  .col-lg-11 {
+    width: 91.66666667%;
+  }
+  .col-lg-10 {
+    width: 83.33333333%;
+  }
+  .col-lg-9 {
+    width: 75%;
+  }
+  .col-lg-8 {
+    width: 66.66666667%;
+  }
+  .col-lg-7 {
+    width: 58.33333333%;
+  }
+  .col-lg-6 {
+    width: 50%;
+  }
+  .col-lg-5 {
+    width: 41.66666667%;
+  }
+  .col-lg-4 {
+    width: 33.33333333%;
+  }
+  .col-lg-3 {
+    width: 25%;
+  }
+  .col-lg-2 {
+    width: 16.66666667%;
+  }
+  .col-lg-1 {
+    width: 8.33333333%;
+  }
+  .col-lg-pull-12 {
+    right: 100%;
+  }
+  .col-lg-pull-11 {
+    right: 91.66666667%;
+  }
+  .col-lg-pull-10 {
+    right: 83.33333333%;
+  }
+  .col-lg-pull-9 {
+    right: 75%;
+  }
+  .col-lg-pull-8 {
+    right: 66.66666667%;
+  }
+  .col-lg-pull-7 {
+    right: 58.33333333%;
+  }
+  .col-lg-pull-6 {
+    right: 50%;
+  }
+  .col-lg-pull-5 {
+    right: 41.66666667%;
+  }
+  .col-lg-pull-4 {
+    right: 33.33333333%;
+  }
+  .col-lg-pull-3 {
+    right: 25%;
+  }
+  .col-lg-pull-2 {
+    right: 16.66666667%;
+  }
+  .col-lg-pull-1 {
+    right: 8.33333333%;
+  }
+  .col-lg-pull-0 {
+    right: auto;
+  }
+  .col-lg-push-12 {
+    left: 100%;
+  }
+  .col-lg-push-11 {
+    left: 91.66666667%;
+  }
+  .col-lg-push-10 {
+    left: 83.33333333%;
+  }
+  .col-lg-push-9 {
+    left: 75%;
+  }
+  .col-lg-push-8 {
+    left: 66.66666667%;
+  }
+  .col-lg-push-7 {
+    left: 58.33333333%;
+  }
+  .col-lg-push-6 {
+    left: 50%;
+  }
+  .col-lg-push-5 {
+    left: 41.66666667%;
+  }
+  .col-lg-push-4 {
+    left: 33.33333333%;
+  }
+  .col-lg-push-3 {
+    left: 25%;
+  }
+  .col-lg-push-2 {
+    left: 16.66666667%;
+  }
+  .col-lg-push-1 {
+    left: 8.33333333%;
+  }
+  .col-lg-push-0 {
+    left: auto;
+  }
+  .col-lg-offset-12 {
+    margin-left: 100%;
+  }
+  .col-lg-offset-11 {
+    margin-left: 91.66666667%;
+  }
+  .col-lg-offset-10 {
+    margin-left: 83.33333333%;
+  }
+  .col-lg-offset-9 {
+    margin-left: 75%;
+  }
+  .col-lg-offset-8 {
+    margin-left: 66.66666667%;
+  }
+  .col-lg-offset-7 {
+    margin-left: 58.33333333%;
+  }
+  .col-lg-offset-6 {
+    margin-left: 50%;
+  }
+  .col-lg-offset-5 {
+    margin-left: 41.66666667%;
+  }
+  .col-lg-offset-4 {
+    margin-left: 33.33333333%;
+  }
+  .col-lg-offset-3 {
+    margin-left: 25%;
+  }
+  .col-lg-offset-2 {
+    margin-left: 16.66666667%;
+  }
+  .col-lg-offset-1 {
+    margin-left: 8.33333333%;
+  }
+  .col-lg-offset-0 {
+    margin-left: 0;
+  }
+}
+table {
+  background-color: transparent;
+}
+caption {
+  padding-top: 8px;
+  padding-bottom: 8px;
+  color: #777;
+  text-align: left;
+}
+th {
+  text-align: left;
+}
+.table {
+  width: 100%;
+  max-width: 100%;
+  margin-bottom: 20px;
+}
+.table > thead > tr > th,
+.table > tbody > tr > th,
+.table > tfoot > tr > th,
+.table > thead > tr > td,
+.table > tbody > tr > td,
+.table > tfoot > tr > td {
+  padding: 8px;
+  line-height: 1.42857143;
+  vertical-align: top;
+  border-top: 1px solid #ddd;
+}
+.table > thead > tr > th {
+  vertical-align: bottom;
+  border-bottom: 2px solid #ddd;
+}
+.table > caption + thead > tr:first-child > th,
+.table > colgroup + thead > tr:first-child > th,
+.table > thead:first-child > tr:first-child > th,
+.table > caption + thead > tr:first-child > td,
+.table > colgroup + thead > tr:first-child > td,
+.table > thead:first-child > tr:first-child > td {
+  border-top: 0;
+}
+.table > tbody + tbody {
+  border-top: 2px solid #ddd;
+}
+.table .table {
+  background-color: #fff;
+}
+.table-condensed > thead > tr > th,
+.table-condensed > tbody > tr > th,
+.table-condensed > tfoot > tr > th,
+.table-condensed > thead > tr > td,
+.table-condensed > tbody > tr > td,
+.table-condensed > tfoot > tr > td {
+  padding: 5px;
+}
+.table-bordered {
+  border: 1px solid #ddd;
+}
+.table-bordered > thead > tr > th,
+.table-bordered > tbody > tr > th,
+.table-bordered > tfoot > tr > th,
+.table-bordered > thead > tr > td,
+.table-bordered > tbody > tr > td,
+.table-bordered > tfoot > tr > td {
+  border: 1px solid #ddd;
+}
+.table-bordered > thead > tr > th,
+.table-bordered > thead > tr > td {
+  border-bottom-width: 2px;
+}
+.table-striped > tbody > tr:nth-of-type(odd) {
+  background-color: #f9f9f9;
+}
+.table-hover > tbody > tr:hover {
+  background-color: #f5f5f5;
+}
+table col[class*="col-"] {
+  position: static;
+  display: table-column;
+  float: none;
+}
+table td[class*="col-"],
+table th[class*="col-"] {
+  position: static;
+  display: table-cell;
+  float: none;
+}
+.table > thead > tr > td.active,
+.table > tbody > tr > td.active,
+.table > tfoot > tr > td.active,
+.table > thead > tr > th.active,
+.table > tbody > tr > th.active,
+.table > tfoot > tr > th.active,
+.table > thead > tr.active > td,
+.table > tbody > tr.active > td,
+.table > tfoot > tr.active > td,
+.table > thead > tr.active > th,
+.table > tbody > tr.active > th,
+.table > tfoot > tr.active > th {
+  background-color: #f5f5f5;
+}
+.table-hover > tbody > tr > td.active:hover,
+.table-hover > tbody > tr > th.active:hover,
+.table-hover > tbody > tr.active:hover > td,
+.table-hover > tbody > tr:hover > .active,
+.table-hover > tbody > tr.active:hover > th {
+  background-color: #e8e8e8;
+}
+.table > thead > tr > td.success,
+.table > tbody > tr > td.success,
+.table > tfoot > tr > td.success,
+.table > thead > tr > th.success,
+.table > tbody > tr > th.success,
+.table > tfoot > tr > th.success,
+.table > thead > tr.success > td,
+.table > tbody > tr.success > td,
+.table > tfoot > tr.success > td,
+.table > thead > tr.success > th,
+.table > tbody > tr.success > th,
+.table > tfoot > tr.success > th {
+  background-color: #dff0d8;
+}
+.table-hover > tbody > tr > td.success:hover,
+.table-hover > tbody > tr > th.success:hover,
+.table-hover > tbody > tr.success:hover > td,
+.table-hover > tbody > tr:hover > .success,
+.table-hover > tbody > tr.success:hover > th {
+  background-color: #d0e9c6;
+}
+.table > thead > tr > td.info,
+.table > tbody > tr > td.info,
+.table > tfoot > tr > td.info,
+.table > thead > tr > th.info,
+.table > tbody > tr > th.info,
+.table > tfoot > tr > th.info,
+.table > thead > tr.info > td,
+.table > tbody > tr.info > td,
+.table > tfoot > tr.info > td,
+.table > thead > tr.info > th,
+.table > tbody > tr.info > th,
+.table > tfoot > tr.info > th {
+  background-color: #d9edf7;
+}
+.table-hover > tbody > tr > td.info:hover,
+.table-hover > tbody > tr > th.info:hover,
+.table-hover > tbody > tr.info:hover > td,
+.table-hover > tbody > tr:hover > .info,
+.table-hover > tbody > tr.info:hover > th {
+  background-color: #c4e3f3;
+}
+.table > thead > tr > td.warning,
+.table > tbody > tr > td.warning,
+.table > tfoot > tr > td.warning,
+.table > thead > tr > th.warning,
+.table > tbody > tr > th.warning,
+.table > tfoot > tr > th.warning,
+.table > thead > tr.warning > td,
+.table > tbody > tr.warning > td,
+.table > tfoot > tr.warning > td,
+.table > thead > tr.warning > th,
+.table > tbody > tr.warning > th,
+.table > tfoot > tr.warning > th {
+  background-color: #fcf8e3;
+}
+.table-hover > tbody > tr > td.warning:hover,
+.table-hover > tbody > tr > th.warning:hover,
+.table-hover > tbody > tr.warning:hover > td,
+.table-hover > tbody > tr:hover > .warning,
+.table-hover > tbody > tr.warning:hover > th {
+  background-color: #faf2cc;
+}
+.table > thead > tr > td.danger,
+.table > tbody > tr > td.danger,
+.table > tfoot > tr > td.danger,
+.table > thead > tr > th.danger,
+.table > tbody > tr > th.danger,
+.table > tfoot > tr > th.danger,
+.table > thead > tr.danger > td,
+.table > tbody > tr.danger > td,
+.table > tfoot > tr.danger > td,
+.table > thead > tr.danger > th,
+.table > tbody > tr.danger > th,
+.table > tfoot > tr.danger > th {
+  background-color: #f2dede;
+}
+.table-hover > tbody > tr > td.danger:hover,
+.table-hover > tbody > tr > th.danger:hover,
+.table-hover > tbody > tr.danger:hover > td,
+.table-hover > tbody > tr:hover > .danger,
+.table-hover > tbody > tr.danger:hover > th {
+  background-color: #ebcccc;
+}
+.table-responsive {
+  min-height: .01%;
+  overflow-x: auto;
+}
+@media screen and (max-width: 767px) {
+  .table-responsive {
+    width: 100%;
+    margin-bottom: 15px;
+    overflow-y: hidden;
+    -ms-overflow-style: -ms-autohiding-scrollbar;
+    border: 1px solid #ddd;
+  }
+  .table-responsive > .table {
+    margin-bottom: 0;
+  }
+  .table-responsive > .table > thead > tr > th,
+  .table-responsive > .table > tbody > tr > th,
+  .table-responsive > .table > tfoot > tr > th,
+  .table-responsive > .table > thead > tr > td,
+  .table-responsive > .table > tbody > tr > td,
+  .table-responsive > .table > tfoot > tr > td {
+    white-space: nowrap;
+  }
+  .table-responsive > .table-bordered {
+    border: 0;
+  }
+  .table-responsive > .table-bordered > thead > tr > th:first-child,
+  .table-responsive > .table-bordered > tbody > tr > th:first-child,
+  .table-responsive > .table-bordered > tfoot > tr > th:first-child,
+  .table-responsive > .table-bordered > thead > tr > td:first-child,
+  .table-responsive > .table-bordered > tbody > tr > td:first-child,
+  .table-responsive > .table-bordered > tfoot > tr > td:first-child {
+    border-left: 0;
+  }
+  .table-responsive > .table-bordered > thead > tr > th:last-child,
+  .table-responsive > .table-bordered > tbody > tr > th:last-child,
+  .table-responsive > .table-bordered > tfoot > tr > th:last-child,
+  .table-responsive > .table-bordered > thead > tr > td:last-child,
+  .table-responsive > .table-bordered > tbody > tr > td:last-child,
+  .table-responsive > .table-bordered > tfoot > tr > td:last-child {
+    border-right: 0;
+  }
+  .table-responsive > .table-bordered > tbody > tr:last-child > th,
+  .table-responsive > .table-bordered > tfoot > tr:last-child > th,
+  .table-responsive > .table-bordered > tbody > tr:last-child > td,
+  .table-responsive > .table-bordered > tfoot > tr:last-child > td {
+    border-bottom: 0;
+  }
+}
+fieldset {
+  min-width: 0;
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+legend {
+  display: block;
+  width: 100%;
+  padding: 0;
+  margin-bottom: 20px;
+  font-size: 21px;
+  line-height: inherit;
+  color: #333;
+  border: 0;
+  border-bottom: 1px solid #e5e5e5;
+}
+label {
+  display: inline-block;
+  max-width: 100%;
+  margin-bottom: 5px;
+  font-weight: bold;
+}
+input[type="search"] {
+  -webkit-box-sizing: border-box;
+     -moz-box-sizing: border-box;
+          box-sizing: border-box;
+}
+input[type="radio"],
+input[type="checkbox"] {
+  margin: 4px 0 0;
+  margin-top: 1px \9;
+  line-height: normal;
+}
+input[type="file"] {
+  display: block;
+}
+input[type="range"] {
+  display: block;
+  width: 100%;
+}
+select[multiple],
+select[size] {
+  height: auto;
+}
+input[type="file"]:focus,
+input[type="radio"]:focus,
+input[type="checkbox"]:focus {
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+output {
+  display: block;
+  padding-top: 7px;
+  font-size: 14px;
+  line-height: 1.42857143;
+  color: #555;
+}
+.form-control {
+  display: block;
+  width: 100%;
+  height: 34px;
+  padding: 6px 12px;
+  font-size: 14px;
+  line-height: 1.42857143;
+  color: #555;
+  background-color: #fff;
+  background-image: none;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+  -webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;
+       -o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
+          transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
+}
+.form-control:focus {
+  border-color: #66afe9;
+  outline: 0;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
+          box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, .6);
+}
+.form-control::-moz-placeholder {
+  color: #999;
+  opacity: 1;
+}
+.form-control:-ms-input-placeholder {
+  color: #999;
+}
+.form-control::-webkit-input-placeholder {
+  color: #999;
+}
+.form-control::-ms-expand {
+  background-color: transparent;
+  border: 0;
+}
+.form-control[disabled],
+.form-control[readonly],
+fieldset[disabled] .form-control {
+  background-color: #eee;
+  opacity: 1;
+}
+.form-control[disabled],
+fieldset[disabled] .form-control {
+  cursor: not-allowed;
+}
+textarea.form-control {
+  height: auto;
+}
+input[type="search"] {
+  -webkit-appearance: none;
+}
+@media screen and (-webkit-min-device-pixel-ratio: 0) {
+  input[type="date"].form-control,
+  input[type="time"].form-control,
+  input[type="datetime-local"].form-control,
+  input[type="month"].form-control {
+    line-height: 34px;
+  }
+  input[type="date"].input-sm,
+  input[type="time"].input-sm,
+  input[type="datetime-local"].input-sm,
+  input[type="month"].input-sm,
+  .input-group-sm input[type="date"],
+  .input-group-sm input[type="time"],
+  .input-group-sm input[type="datetime-local"],
+  .input-group-sm input[type="month"] {
+    line-height: 30px;
+  }
+  input[type="date"].input-lg,
+  input[type="time"].input-lg,
+  input[type="datetime-local"].input-lg,
+  input[type="month"].input-lg,
+  .input-group-lg input[type="date"],
+  .input-group-lg input[type="time"],
+  .input-group-lg input[type="datetime-local"],
+  .input-group-lg input[type="month"] {
+    line-height: 46px;
+  }
+}
+.form-group {
+  margin-bottom: 15px;
+}
+.radio,
+.checkbox {
+  position: relative;
+  display: block;
+  margin-top: 10px;
+  margin-bottom: 10px;
+}
+.radio label,
+.checkbox label {
+  min-height: 20px;
+  padding-left: 20px;
+  margin-bottom: 0;
+  font-weight: normal;
+  cursor: pointer;
+}
+.radio input[type="radio"],
+.radio-inline input[type="radio"],
+.checkbox input[type="checkbox"],
+.checkbox-inline input[type="checkbox"] {
+  position: absolute;
+  margin-top: 4px \9;
+  margin-left: -20px;
+}
+.radio + .radio,
+.checkbox + .checkbox {
+  margin-top: -5px;
+}
+.radio-inline,
+.checkbox-inline {
+  position: relative;
+  display: inline-block;
+  padding-left: 20px;
+  margin-bottom: 0;
+  font-weight: normal;
+  vertical-align: middle;
+  cursor: pointer;
+}
+.radio-inline + .radio-inline,
+.checkbox-inline + .checkbox-inline {
+  margin-top: 0;
+  margin-left: 10px;
+}
+input[type="radio"][disabled],
+input[type="checkbox"][disabled],
+input[type="radio"].disabled,
+input[type="checkbox"].disabled,
+fieldset[disabled] input[type="radio"],
+fieldset[disabled] input[type="checkbox"] {
+  cursor: not-allowed;
+}
+.radio-inline.disabled,
+.checkbox-inline.disabled,
+fieldset[disabled] .radio-inline,
+fieldset[disabled] .checkbox-inline {
+  cursor: not-allowed;
+}
+.radio.disabled label,
+.checkbox.disabled label,
+fieldset[disabled] .radio label,
+fieldset[disabled] .checkbox label {
+  cursor: not-allowed;
+}
+.form-control-static {
+  min-height: 34px;
+  padding-top: 7px;
+  padding-bottom: 7px;
+  margin-bottom: 0;
+}
+.form-control-static.input-lg,
+.form-control-static.input-sm {
+  padding-right: 0;
+  padding-left: 0;
+}
+.input-sm {
+  height: 30px;
+  padding: 5px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+  border-radius: 3px;
+}
+select.input-sm {
+  height: 30px;
+  line-height: 30px;
+}
+textarea.input-sm,
+select[multiple].input-sm {
+  height: auto;
+}
+.form-group-sm .form-control {
+  height: 30px;
+  padding: 5px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+  border-radius: 3px;
+}
+.form-group-sm select.form-control {
+  height: 30px;
+  line-height: 30px;
+}
+.form-group-sm textarea.form-control,
+.form-group-sm select[multiple].form-control {
+  height: auto;
+}
+.form-group-sm .form-control-static {
+  height: 30px;
+  min-height: 32px;
+  padding: 6px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+}
+.input-lg {
+  height: 46px;
+  padding: 10px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+  border-radius: 6px;
+}
+select.input-lg {
+  height: 46px;
+  line-height: 46px;
+}
+textarea.input-lg,
+select[multiple].input-lg {
+  height: auto;
+}
+.form-group-lg .form-control {
+  height: 46px;
+  padding: 10px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+  border-radius: 6px;
+}
+.form-group-lg select.form-control {
+  height: 46px;
+  line-height: 46px;
+}
+.form-group-lg textarea.form-control,
+.form-group-lg select[multiple].form-control {
+  height: auto;
+}
+.form-group-lg .form-control-static {
+  height: 46px;
+  min-height: 38px;
+  padding: 11px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+}
+.has-feedback {
+  position: relative;
+}
+.has-feedback .form-control {
+  padding-right: 42.5px;
+}
+.form-control-feedback {
+  position: absolute;
+  top: 0;
+  right: 0;
+  z-index: 2;
+  display: block;
+  width: 34px;
+  height: 34px;
+  line-height: 34px;
+  text-align: center;
+  pointer-events: none;
+}
+.input-lg + .form-control-feedback,
+.input-group-lg + .form-control-feedback,
+.form-group-lg .form-control + .form-control-feedback {
+  width: 46px;
+  height: 46px;
+  line-height: 46px;
+}
+.input-sm + .form-control-feedback,
+.input-group-sm + .form-control-feedback,
+.form-group-sm .form-control + .form-control-feedback {
+  width: 30px;
+  height: 30px;
+  line-height: 30px;
+}
+.has-success .help-block,
+.has-success .control-label,
+.has-success .radio,
+.has-success .checkbox,
+.has-success .radio-inline,
+.has-success .checkbox-inline,
+.has-success.radio label,
+.has-success.checkbox label,
+.has-success.radio-inline label,
+.has-success.checkbox-inline label {
+  color: #3c763d;
+}
+.has-success .form-control {
+  border-color: #3c763d;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+}
+.has-success .form-control:focus {
+  border-color: #2b542c;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168;
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #67b168;
+}
+.has-success .input-group-addon {
+  color: #3c763d;
+  background-color: #dff0d8;
+  border-color: #3c763d;
+}
+.has-success .form-control-feedback {
+  color: #3c763d;
+}
+.has-warning .help-block,
+.has-warning .control-label,
+.has-warning .radio,
+.has-warning .checkbox,
+.has-warning .radio-inline,
+.has-warning .checkbox-inline,
+.has-warning.radio label,
+.has-warning.checkbox label,
+.has-warning.radio-inline label,
+.has-warning.checkbox-inline label {
+  color: #8a6d3b;
+}
+.has-warning .form-control {
+  border-color: #8a6d3b;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+}
+.has-warning .form-control:focus {
+  border-color: #66512c;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #c0a16b;
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #c0a16b;
+}
+.has-warning .input-group-addon {
+  color: #8a6d3b;
+  background-color: #fcf8e3;
+  border-color: #8a6d3b;
+}
+.has-warning .form-control-feedback {
+  color: #8a6d3b;
+}
+.has-error .help-block,
+.has-error .control-label,
+.has-error .radio,
+.has-error .checkbox,
+.has-error .radio-inline,
+.has-error .checkbox-inline,
+.has-error.radio label,
+.has-error.checkbox label,
+.has-error.radio-inline label,
+.has-error.checkbox-inline label {
+  color: #a94442;
+}
+.has-error .form-control {
+  border-color: #a94442;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075);
+}
+.has-error .form-control:focus {
+  border-color: #843534;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483;
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 6px #ce8483;
+}
+.has-error .input-group-addon {
+  color: #a94442;
+  background-color: #f2dede;
+  border-color: #a94442;
+}
+.has-error .form-control-feedback {
+  color: #a94442;
+}
+.has-feedback label ~ .form-control-feedback {
+  top: 25px;
+}
+.has-feedback label.sr-only ~ .form-control-feedback {
+  top: 0;
+}
+.help-block {
+  display: block;
+  margin-top: 5px;
+  margin-bottom: 10px;
+  color: #737373;
+}
+@media (min-width: 768px) {
+  .form-inline .form-group {
+    display: inline-block;
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .form-inline .form-control {
+    display: inline-block;
+    width: auto;
+    vertical-align: middle;
+  }
+  .form-inline .form-control-static {
+    display: inline-block;
+  }
+  .form-inline .input-group {
+    display: inline-table;
+    vertical-align: middle;
+  }
+  .form-inline .input-group .input-group-addon,
+  .form-inline .input-group .input-group-btn,
+  .form-inline .input-group .form-control {
+    width: auto;
+  }
+  .form-inline .input-group > .form-control {
+    width: 100%;
+  }
+  .form-inline .control-label {
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .form-inline .radio,
+  .form-inline .checkbox {
+    display: inline-block;
+    margin-top: 0;
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .form-inline .radio label,
+  .form-inline .checkbox label {
+    padding-left: 0;
+  }
+  .form-inline .radio input[type="radio"],
+  .form-inline .checkbox input[type="checkbox"] {
+    position: relative;
+    margin-left: 0;
+  }
+  .form-inline .has-feedback .form-control-feedback {
+    top: 0;
+  }
+}
+.form-horizontal .radio,
+.form-horizontal .checkbox,
+.form-horizontal .radio-inline,
+.form-horizontal .checkbox-inline {
+  padding-top: 7px;
+  margin-top: 0;
+  margin-bottom: 0;
+}
+.form-horizontal .radio,
+.form-horizontal .checkbox {
+  min-height: 27px;
+}
+.form-horizontal .form-group {
+  margin-right: -15px;
+  margin-left: -15px;
+}
+@media (min-width: 768px) {
+  .form-horizontal .control-label {
+    padding-top: 7px;
+    margin-bottom: 0;
+    text-align: right;
+  }
+}
+.form-horizontal .has-feedback .form-control-feedback {
+  right: 15px;
+}
+@media (min-width: 768px) {
+  .form-horizontal .form-group-lg .control-label {
+    padding-top: 11px;
+    font-size: 18px;
+  }
+}
+@media (min-width: 768px) {
+  .form-horizontal .form-group-sm .control-label {
+    padding-top: 6px;
+    font-size: 12px;
+  }
+}
+.btn {
+  display: inline-block;
+  padding: 6px 12px;
+  margin-bottom: 0;
+  font-size: 14px;
+  font-weight: normal;
+  line-height: 1.42857143;
+  text-align: center;
+  white-space: nowrap;
+  vertical-align: middle;
+  -ms-touch-action: manipulation;
+      touch-action: manipulation;
+  cursor: pointer;
+  -webkit-user-select: none;
+     -moz-user-select: none;
+      -ms-user-select: none;
+          user-select: none;
+  background-image: none;
+  border: 1px solid transparent;
+  border-radius: 4px;
+}
+.btn:focus,
+.btn:active:focus,
+.btn.active:focus,
+.btn.focus,
+.btn:active.focus,
+.btn.active.focus {
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+.btn:hover,
+.btn:focus,
+.btn.focus {
+  color: #333;
+  text-decoration: none;
+}
+.btn:active,
+.btn.active {
+  background-image: none;
+  outline: 0;
+  -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+          box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+}
+.btn.disabled,
+.btn[disabled],
+fieldset[disabled] .btn {
+  cursor: not-allowed;
+  filter: alpha(opacity=65);
+  -webkit-box-shadow: none;
+          box-shadow: none;
+  opacity: .65;
+}
+a.btn.disabled,
+fieldset[disabled] a.btn {
+  pointer-events: none;
+}
+.btn-default {
+  color: #333;
+  background-color: #fff;
+  border-color: #ccc;
+}
+.btn-default:focus,
+.btn-default.focus {
+  color: #333;
+  background-color: #e6e6e6;
+  border-color: #8c8c8c;
+}
+.btn-default:hover {
+  color: #333;
+  background-color: #e6e6e6;
+  border-color: #adadad;
+}
+.btn-default:active,
+.btn-default.active,
+.open > .dropdown-toggle.btn-default {
+  color: #333;
+  background-color: #e6e6e6;
+  border-color: #adadad;
+}
+.btn-default:active:hover,
+.btn-default.active:hover,
+.open > .dropdown-toggle.btn-default:hover,
+.btn-default:active:focus,
+.btn-default.active:focus,
+.open > .dropdown-toggle.btn-default:focus,
+.btn-default:active.focus,
+.btn-default.active.focus,
+.open > .dropdown-toggle.btn-default.focus {
+  color: #333;
+  background-color: #d4d4d4;
+  border-color: #8c8c8c;
+}
+.btn-default:active,
+.btn-default.active,
+.open > .dropdown-toggle.btn-default {
+  background-image: none;
+}
+.btn-default.disabled:hover,
+.btn-default[disabled]:hover,
+fieldset[disabled] .btn-default:hover,
+.btn-default.disabled:focus,
+.btn-default[disabled]:focus,
+fieldset[disabled] .btn-default:focus,
+.btn-default.disabled.focus,
+.btn-default[disabled].focus,
+fieldset[disabled] .btn-default.focus {
+  background-color: #fff;
+  border-color: #ccc;
+}
+.btn-default .badge {
+  color: #fff;
+  background-color: #333;
+}
+.btn-primary {
+  color: #fff;
+  background-color: #337ab7;
+  border-color: #2e6da4;
+}
+.btn-primary:focus,
+.btn-primary.focus {
+  color: #fff;
+  background-color: #286090;
+  border-color: #122b40;
+}
+.btn-primary:hover {
+  color: #fff;
+  background-color: #286090;
+  border-color: #204d74;
+}
+.btn-primary:active,
+.btn-primary.active,
+.open > .dropdown-toggle.btn-primary {
+  color: #fff;
+  background-color: #286090;
+  border-color: #204d74;
+}
+.btn-primary:active:hover,
+.btn-primary.active:hover,
+.open > .dropdown-toggle.btn-primary:hover,
+.btn-primary:active:focus,
+.btn-primary.active:focus,
+.open > .dropdown-toggle.btn-primary:focus,
+.btn-primary:active.focus,
+.btn-primary.active.focus,
+.open > .dropdown-toggle.btn-primary.focus {
+  color: #fff;
+  background-color: #204d74;
+  border-color: #122b40;
+}
+.btn-primary:active,
+.btn-primary.active,
+.open > .dropdown-toggle.btn-primary {
+  background-image: none;
+}
+.btn-primary.disabled:hover,
+.btn-primary[disabled]:hover,
+fieldset[disabled] .btn-primary:hover,
+.btn-primary.disabled:focus,
+.btn-primary[disabled]:focus,
+fieldset[disabled] .btn-primary:focus,
+.btn-primary.disabled.focus,
+.btn-primary[disabled].focus,
+fieldset[disabled] .btn-primary.focus {
+  background-color: #337ab7;
+  border-color: #2e6da4;
+}
+.btn-primary .badge {
+  color: #337ab7;
+  background-color: #fff;
+}
+.btn-success {
+  color: #fff;
+  background-color: #5cb85c;
+  border-color: #4cae4c;
+}
+.btn-success:focus,
+.btn-success.focus {
+  color: #fff;
+  background-color: #449d44;
+  border-color: #255625;
+}
+.btn-success:hover {
+  color: #fff;
+  background-color: #449d44;
+  border-color: #398439;
+}
+.btn-success:active,
+.btn-success.active,
+.open > .dropdown-toggle.btn-success {
+  color: #fff;
+  background-color: #449d44;
+  border-color: #398439;
+}
+.btn-success:active:hover,
+.btn-success.active:hover,
+.open > .dropdown-toggle.btn-success:hover,
+.btn-success:active:focus,
+.btn-success.active:focus,
+.open > .dropdown-toggle.btn-success:focus,
+.btn-success:active.focus,
+.btn-success.active.focus,
+.open > .dropdown-toggle.btn-success.focus {
+  color: #fff;
+  background-color: #398439;
+  border-color: #255625;
+}
+.btn-success:active,
+.btn-success.active,
+.open > .dropdown-toggle.btn-success {
+  background-image: none;
+}
+.btn-success.disabled:hover,
+.btn-success[disabled]:hover,
+fieldset[disabled] .btn-success:hover,
+.btn-success.disabled:focus,
+.btn-success[disabled]:focus,
+fieldset[disabled] .btn-success:focus,
+.btn-success.disabled.focus,
+.btn-success[disabled].focus,
+fieldset[disabled] .btn-success.focus {
+  background-color: #5cb85c;
+  border-color: #4cae4c;
+}
+.btn-success .badge {
+  color: #5cb85c;
+  background-color: #fff;
+}
+.btn-info {
+  color: #fff;
+  background-color: #5bc0de;
+  border-color: #46b8da;
+}
+.btn-info:focus,
+.btn-info.focus {
+  color: #fff;
+  background-color: #31b0d5;
+  border-color: #1b6d85;
+}
+.btn-info:hover {
+  color: #fff;
+  background-color: #31b0d5;
+  border-color: #269abc;
+}
+.btn-info:active,
+.btn-info.active,
+.open > .dropdown-toggle.btn-info {
+  color: #fff;
+  background-color: #31b0d5;
+  border-color: #269abc;
+}
+.btn-info:active:hover,
+.btn-info.active:hover,
+.open > .dropdown-toggle.btn-info:hover,
+.btn-info:active:focus,
+.btn-info.active:focus,
+.open > .dropdown-toggle.btn-info:focus,
+.btn-info:active.focus,
+.btn-info.active.focus,
+.open > .dropdown-toggle.btn-info.focus {
+  color: #fff;
+  background-color: #269abc;
+  border-color: #1b6d85;
+}
+.btn-info:active,
+.btn-info.active,
+.open > .dropdown-toggle.btn-info {
+  background-image: none;
+}
+.btn-info.disabled:hover,
+.btn-info[disabled]:hover,
+fieldset[disabled] .btn-info:hover,
+.btn-info.disabled:focus,
+.btn-info[disabled]:focus,
+fieldset[disabled] .btn-info:focus,
+.btn-info.disabled.focus,
+.btn-info[disabled].focus,
+fieldset[disabled] .btn-info.focus {
+  background-color: #5bc0de;
+  border-color: #46b8da;
+}
+.btn-info .badge {
+  color: #5bc0de;
+  background-color: #fff;
+}
+.btn-warning {
+  color: #fff;
+  background-color: #f0ad4e;
+  border-color: #eea236;
+}
+.btn-warning:focus,
+.btn-warning.focus {
+  color: #fff;
+  background-color: #ec971f;
+  border-color: #985f0d;
+}
+.btn-warning:hover {
+  color: #fff;
+  background-color: #ec971f;
+  border-color: #d58512;
+}
+.btn-warning:active,
+.btn-warning.active,
+.open > .dropdown-toggle.btn-warning {
+  color: #fff;
+  background-color: #ec971f;
+  border-color: #d58512;
+}
+.btn-warning:active:hover,
+.btn-warning.active:hover,
+.open > .dropdown-toggle.btn-warning:hover,
+.btn-warning:active:focus,
+.btn-warning.active:focus,
+.open > .dropdown-toggle.btn-warning:focus,
+.btn-warning:active.focus,
+.btn-warning.active.focus,
+.open > .dropdown-toggle.btn-warning.focus {
+  color: #fff;
+  background-color: #d58512;
+  border-color: #985f0d;
+}
+.btn-warning:active,
+.btn-warning.active,
+.open > .dropdown-toggle.btn-warning {
+  background-image: none;
+}
+.btn-warning.disabled:hover,
+.btn-warning[disabled]:hover,
+fieldset[disabled] .btn-warning:hover,
+.btn-warning.disabled:focus,
+.btn-warning[disabled]:focus,
+fieldset[disabled] .btn-warning:focus,
+.btn-warning.disabled.focus,
+.btn-warning[disabled].focus,
+fieldset[disabled] .btn-warning.focus {
+  background-color: #f0ad4e;
+  border-color: #eea236;
+}
+.btn-warning .badge {
+  color: #f0ad4e;
+  background-color: #fff;
+}
+.btn-danger {
+  color: #fff;
+  background-color: #d9534f;
+  border-color: #d43f3a;
+}
+.btn-danger:focus,
+.btn-danger.focus {
+  color: #fff;
+  background-color: #c9302c;
+  border-color: #761c19;
+}
+.btn-danger:hover {
+  color: #fff;
+  background-color: #c9302c;
+  border-color: #ac2925;
+}
+.btn-danger:active,
+.btn-danger.active,
+.open > .dropdown-toggle.btn-danger {
+  color: #fff;
+  background-color: #c9302c;
+  border-color: #ac2925;
+}
+.btn-danger:active:hover,
+.btn-danger.active:hover,
+.open > .dropdown-toggle.btn-danger:hover,
+.btn-danger:active:focus,
+.btn-danger.active:focus,
+.open > .dropdown-toggle.btn-danger:focus,
+.btn-danger:active.focus,
+.btn-danger.active.focus,
+.open > .dropdown-toggle.btn-danger.focus {
+  color: #fff;
+  background-color: #ac2925;
+  border-color: #761c19;
+}
+.btn-danger:active,
+.btn-danger.active,
+.open > .dropdown-toggle.btn-danger {
+  background-image: none;
+}
+.btn-danger.disabled:hover,
+.btn-danger[disabled]:hover,
+fieldset[disabled] .btn-danger:hover,
+.btn-danger.disabled:focus,
+.btn-danger[disabled]:focus,
+fieldset[disabled] .btn-danger:focus,
+.btn-danger.disabled.focus,
+.btn-danger[disabled].focus,
+fieldset[disabled] .btn-danger.focus {
+  background-color: #d9534f;
+  border-color: #d43f3a;
+}
+.btn-danger .badge {
+  color: #d9534f;
+  background-color: #fff;
+}
+.btn-link {
+  font-weight: normal;
+  color: #337ab7;
+  border-radius: 0;
+}
+.btn-link,
+.btn-link:active,
+.btn-link.active,
+.btn-link[disabled],
+fieldset[disabled] .btn-link {
+  background-color: transparent;
+  -webkit-box-shadow: none;
+          box-shadow: none;
+}
+.btn-link,
+.btn-link:hover,
+.btn-link:focus,
+.btn-link:active {
+  border-color: transparent;
+}
+.btn-link:hover,
+.btn-link:focus {
+  color: #23527c;
+  text-decoration: underline;
+  background-color: transparent;
+}
+.btn-link[disabled]:hover,
+fieldset[disabled] .btn-link:hover,
+.btn-link[disabled]:focus,
+fieldset[disabled] .btn-link:focus {
+  color: #777;
+  text-decoration: none;
+}
+.btn-lg,
+.btn-group-lg > .btn {
+  padding: 10px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+  border-radius: 6px;
+}
+.btn-sm,
+.btn-group-sm > .btn {
+  padding: 5px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+  border-radius: 3px;
+}
+.btn-xs,
+.btn-group-xs > .btn {
+  padding: 1px 5px;
+  font-size: 12px;
+  line-height: 1.5;
+  border-radius: 3px;
+}
+.btn-block {
+  display: block;
+  width: 100%;
+}
+.btn-block + .btn-block {
+  margin-top: 5px;
+}
+input[type="submit"].btn-block,
+input[type="reset"].btn-block,
+input[type="button"].btn-block {
+  width: 100%;
+}
+.fade {
+  opacity: 0;
+  -webkit-transition: opacity .15s linear;
+       -o-transition: opacity .15s linear;
+          transition: opacity .15s linear;
+}
+.fade.in {
+  opacity: 1;
+}
+.collapse {
+  display: none;
+}
+.collapse.in {
+  display: block;
+}
+tr.collapse.in {
+  display: table-row;
+}
+tbody.collapse.in {
+  display: table-row-group;
+}
+.collapsing {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  -webkit-transition-timing-function: ease;
+       -o-transition-timing-function: ease;
+          transition-timing-function: ease;
+  -webkit-transition-duration: .35s;
+       -o-transition-duration: .35s;
+          transition-duration: .35s;
+  -webkit-transition-property: height, visibility;
+       -o-transition-property: height, visibility;
+          transition-property: height, visibility;
+}
+.caret {
+  display: inline-block;
+  width: 0;
+  height: 0;
+  margin-left: 2px;
+  vertical-align: middle;
+  border-top: 4px dashed;
+  border-top: 4px solid \9;
+  border-right: 4px solid transparent;
+  border-left: 4px solid transparent;
+}
+.dropup,
+.dropdown {
+  position: relative;
+}
+.dropdown-toggle:focus {
+  outline: 0;
+}
+.dropdown-menu {
+  position: absolute;
+  top: 100%;
+  left: 0;
+  z-index: 1000;
+  display: none;
+  float: left;
+  min-width: 160px;
+  padding: 5px 0;
+  margin: 2px 0 0;
+  font-size: 14px;
+  text-align: left;
+  list-style: none;
+  background-color: #fff;
+  -webkit-background-clip: padding-box;
+          background-clip: padding-box;
+  border: 1px solid #ccc;
+  border: 1px solid rgba(0, 0, 0, .15);
+  border-radius: 4px;
+  -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
+          box-shadow: 0 6px 12px rgba(0, 0, 0, .175);
+}
+.dropdown-menu.pull-right {
+  right: 0;
+  left: auto;
+}
+.dropdown-menu .divider {
+  height: 1px;
+  margin: 9px 0;
+  overflow: hidden;
+  background-color: #e5e5e5;
+}
+.dropdown-menu > li > a {
+  display: block;
+  padding: 3px 20px;
+  clear: both;
+  font-weight: normal;
+  line-height: 1.42857143;
+  color: #333;
+  white-space: nowrap;
+}
+.dropdown-menu > li > a:hover,
+.dropdown-menu > li > a:focus {
+  color: #262626;
+  text-decoration: none;
+  background-color: #f5f5f5;
+}
+.dropdown-menu > .active > a,
+.dropdown-menu > .active > a:hover,
+.dropdown-menu > .active > a:focus {
+  color: #fff;
+  text-decoration: none;
+  background-color: #337ab7;
+  outline: 0;
+}
+.dropdown-menu > .disabled > a,
+.dropdown-menu > .disabled > a:hover,
+.dropdown-menu > .disabled > a:focus {
+  color: #777;
+}
+.dropdown-menu > .disabled > a:hover,
+.dropdown-menu > .disabled > a:focus {
+  text-decoration: none;
+  cursor: not-allowed;
+  background-color: transparent;
+  background-image: none;
+  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+}
+.open > .dropdown-menu {
+  display: block;
+}
+.open > a {
+  outline: 0;
+}
+.dropdown-menu-right {
+  right: 0;
+  left: auto;
+}
+.dropdown-menu-left {
+  right: auto;
+  left: 0;
+}
+.dropdown-header {
+  display: block;
+  padding: 3px 20px;
+  font-size: 12px;
+  line-height: 1.42857143;
+  color: #777;
+  white-space: nowrap;
+}
+.dropdown-backdrop {
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 990;
+}
+.pull-right > .dropdown-menu {
+  right: 0;
+  left: auto;
+}
+.dropup .caret,
+.navbar-fixed-bottom .dropdown .caret {
+  content: "";
+  border-top: 0;
+  border-bottom: 4px dashed;
+  border-bottom: 4px solid \9;
+}
+.dropup .dropdown-menu,
+.navbar-fixed-bottom .dropdown .dropdown-menu {
+  top: auto;
+  bottom: 100%;
+  margin-bottom: 2px;
+}
+@media (min-width: 768px) {
+  .navbar-right .dropdown-menu {
+    right: 0;
+    left: auto;
+  }
+  .navbar-right .dropdown-menu-left {
+    right: auto;
+    left: 0;
+  }
+}
+.btn-group,
+.btn-group-vertical {
+  position: relative;
+  display: inline-block;
+  vertical-align: middle;
+}
+.btn-group > .btn,
+.btn-group-vertical > .btn {
+  position: relative;
+  float: left;
+}
+.btn-group > .btn:hover,
+.btn-group-vertical > .btn:hover,
+.btn-group > .btn:focus,
+.btn-group-vertical > .btn:focus,
+.btn-group > .btn:active,
+.btn-group-vertical > .btn:active,
+.btn-group > .btn.active,
+.btn-group-vertical > .btn.active {
+  z-index: 2;
+}
+.btn-group .btn + .btn,
+.btn-group .btn + .btn-group,
+.btn-group .btn-group + .btn,
+.btn-group .btn-group + .btn-group {
+  margin-left: -1px;
+}
+.btn-toolbar {
+  margin-left: -5px;
+}
+.btn-toolbar .btn,
+.btn-toolbar .btn-group,
+.btn-toolbar .input-group {
+  float: left;
+}
+.btn-toolbar > .btn,
+.btn-toolbar > .btn-group,
+.btn-toolbar > .input-group {
+  margin-left: 5px;
+}
+.btn-group > .btn:not(:first-child):not(:last-child):not(.dropdown-toggle) {
+  border-radius: 0;
+}
+.btn-group > .btn:first-child {
+  margin-left: 0;
+}
+.btn-group > .btn:first-child:not(:last-child):not(.dropdown-toggle) {
+  border-top-right-radius: 0;
+  border-bottom-right-radius: 0;
+}
+.btn-group > .btn:last-child:not(:first-child),
+.btn-group > .dropdown-toggle:not(:first-child) {
+  border-top-left-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.btn-group > .btn-group {
+  float: left;
+}
+.btn-group > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group > .btn-group:first-child:not(:last-child) > .btn:last-child,
+.btn-group > .btn-group:first-child:not(:last-child) > .dropdown-toggle {
+  border-top-right-radius: 0;
+  border-bottom-right-radius: 0;
+}
+.btn-group > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  border-top-left-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.btn-group .dropdown-toggle:active,
+.btn-group.open .dropdown-toggle {
+  outline: 0;
+}
+.btn-group > .btn + .dropdown-toggle {
+  padding-right: 8px;
+  padding-left: 8px;
+}
+.btn-group > .btn-lg + .dropdown-toggle {
+  padding-right: 12px;
+  padding-left: 12px;
+}
+.btn-group.open .dropdown-toggle {
+  -webkit-box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+          box-shadow: inset 0 3px 5px rgba(0, 0, 0, .125);
+}
+.btn-group.open .dropdown-toggle.btn-link {
+  -webkit-box-shadow: none;
+          box-shadow: none;
+}
+.btn .caret {
+  margin-left: 0;
+}
+.btn-lg .caret {
+  border-width: 5px 5px 0;
+  border-bottom-width: 0;
+}
+.dropup .btn-lg .caret {
+  border-width: 0 5px 5px;
+}
+.btn-group-vertical > .btn,
+.btn-group-vertical > .btn-group,
+.btn-group-vertical > .btn-group > .btn {
+  display: block;
+  float: none;
+  width: 100%;
+  max-width: 100%;
+}
+.btn-group-vertical > .btn-group > .btn {
+  float: none;
+}
+.btn-group-vertical > .btn + .btn,
+.btn-group-vertical > .btn + .btn-group,
+.btn-group-vertical > .btn-group + .btn,
+.btn-group-vertical > .btn-group + .btn-group {
+  margin-top: -1px;
+  margin-left: 0;
+}
+.btn-group-vertical > .btn:not(:first-child):not(:last-child) {
+  border-radius: 0;
+}
+.btn-group-vertical > .btn:first-child:not(:last-child) {
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-right-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.btn-group-vertical > .btn:last-child:not(:first-child) {
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+}
+.btn-group-vertical > .btn-group:not(:first-child):not(:last-child) > .btn {
+  border-radius: 0;
+}
+.btn-group-vertical > .btn-group:first-child:not(:last-child) > .btn:last-child,
+.btn-group-vertical > .btn-group:first-child:not(:last-child) > .dropdown-toggle {
+  border-bottom-right-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.btn-group-vertical > .btn-group:last-child:not(:first-child) > .btn:first-child {
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+}
+.btn-group-justified {
+  display: table;
+  width: 100%;
+  table-layout: fixed;
+  border-collapse: separate;
+}
+.btn-group-justified > .btn,
+.btn-group-justified > .btn-group {
+  display: table-cell;
+  float: none;
+  width: 1%;
+}
+.btn-group-justified > .btn-group .btn {
+  width: 100%;
+}
+.btn-group-justified > .btn-group .dropdown-menu {
+  left: auto;
+}
+[data-toggle="buttons"] > .btn input[type="radio"],
+[data-toggle="buttons"] > .btn-group > .btn input[type="radio"],
+[data-toggle="buttons"] > .btn input[type="checkbox"],
+[data-toggle="buttons"] > .btn-group > .btn input[type="checkbox"] {
+  position: absolute;
+  clip: rect(0, 0, 0, 0);
+  pointer-events: none;
+}
+.input-group {
+  position: relative;
+  display: table;
+  border-collapse: separate;
+}
+.input-group[class*="col-"] {
+  float: none;
+  padding-right: 0;
+  padding-left: 0;
+}
+.input-group .form-control {
+  position: relative;
+  z-index: 2;
+  float: left;
+  width: 100%;
+  margin-bottom: 0;
+}
+.input-group .form-control:focus {
+  z-index: 3;
+}
+.input-group-lg > .form-control,
+.input-group-lg > .input-group-addon,
+.input-group-lg > .input-group-btn > .btn {
+  height: 46px;
+  padding: 10px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+  border-radius: 6px;
+}
+select.input-group-lg > .form-control,
+select.input-group-lg > .input-group-addon,
+select.input-group-lg > .input-group-btn > .btn {
+  height: 46px;
+  line-height: 46px;
+}
+textarea.input-group-lg > .form-control,
+textarea.input-group-lg > .input-group-addon,
+textarea.input-group-lg > .input-group-btn > .btn,
+select[multiple].input-group-lg > .form-control,
+select[multiple].input-group-lg > .input-group-addon,
+select[multiple].input-group-lg > .input-group-btn > .btn {
+  height: auto;
+}
+.input-group-sm > .form-control,
+.input-group-sm > .input-group-addon,
+.input-group-sm > .input-group-btn > .btn {
+  height: 30px;
+  padding: 5px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+  border-radius: 3px;
+}
+select.input-group-sm > .form-control,
+select.input-group-sm > .input-group-addon,
+select.input-group-sm > .input-group-btn > .btn {
+  height: 30px;
+  line-height: 30px;
+}
+textarea.input-group-sm > .form-control,
+textarea.input-group-sm > .input-group-addon,
+textarea.input-group-sm > .input-group-btn > .btn,
+select[multiple].input-group-sm > .form-control,
+select[multiple].input-group-sm > .input-group-addon,
+select[multiple].input-group-sm > .input-group-btn > .btn {
+  height: auto;
+}
+.input-group-addon,
+.input-group-btn,
+.input-group .form-control {
+  display: table-cell;
+}
+.input-group-addon:not(:first-child):not(:last-child),
+.input-group-btn:not(:first-child):not(:last-child),
+.input-group .form-control:not(:first-child):not(:last-child) {
+  border-radius: 0;
+}
+.input-group-addon,
+.input-group-btn {
+  width: 1%;
+  white-space: nowrap;
+  vertical-align: middle;
+}
+.input-group-addon {
+  padding: 6px 12px;
+  font-size: 14px;
+  font-weight: normal;
+  line-height: 1;
+  color: #555;
+  text-align: center;
+  background-color: #eee;
+  border: 1px solid #ccc;
+  border-radius: 4px;
+}
+.input-group-addon.input-sm {
+  padding: 5px 10px;
+  font-size: 12px;
+  border-radius: 3px;
+}
+.input-group-addon.input-lg {
+  padding: 10px 16px;
+  font-size: 18px;
+  border-radius: 6px;
+}
+.input-group-addon input[type="radio"],
+.input-group-addon input[type="checkbox"] {
+  margin-top: 0;
+}
+.input-group .form-control:first-child,
+.input-group-addon:first-child,
+.input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group > .btn,
+.input-group-btn:first-child > .dropdown-toggle,
+.input-group-btn:last-child > .btn:not(:last-child):not(.dropdown-toggle),
+.input-group-btn:last-child > .btn-group:not(:last-child) > .btn {
+  border-top-right-radius: 0;
+  border-bottom-right-radius: 0;
+}
+.input-group-addon:first-child {
+  border-right: 0;
+}
+.input-group .form-control:last-child,
+.input-group-addon:last-child,
+.input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group > .btn,
+.input-group-btn:last-child > .dropdown-toggle,
+.input-group-btn:first-child > .btn:not(:first-child),
+.input-group-btn:first-child > .btn-group:not(:first-child) > .btn {
+  border-top-left-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.input-group-addon:last-child {
+  border-left: 0;
+}
+.input-group-btn {
+  position: relative;
+  font-size: 0;
+  white-space: nowrap;
+}
+.input-group-btn > .btn {
+  position: relative;
+}
+.input-group-btn > .btn + .btn {
+  margin-left: -1px;
+}
+.input-group-btn > .btn:hover,
+.input-group-btn > .btn:focus,
+.input-group-btn > .btn:active {
+  z-index: 2;
+}
+.input-group-btn:first-child > .btn,
+.input-group-btn:first-child > .btn-group {
+  margin-right: -1px;
+}
+.input-group-btn:last-child > .btn,
+.input-group-btn:last-child > .btn-group {
+  z-index: 2;
+  margin-left: -1px;
+}
+.nav {
+  padding-left: 0;
+  margin-bottom: 0;
+  list-style: none;
+}
+.nav > li {
+  position: relative;
+  display: block;
+}
+.nav > li > a {
+  position: relative;
+  display: block;
+  padding: 10px 15px;
+}
+.nav > li > a:hover,
+.nav > li > a:focus {
+  text-decoration: none;
+  background-color: #eee;
+}
+.nav > li.disabled > a {
+  color: #777;
+}
+.nav > li.disabled > a:hover,
+.nav > li.disabled > a:focus {
+  color: #777;
+  text-decoration: none;
+  cursor: not-allowed;
+  background-color: transparent;
+}
+.nav .open > a,
+.nav .open > a:hover,
+.nav .open > a:focus {
+  background-color: #eee;
+  border-color: #337ab7;
+}
+.nav .nav-divider {
+  height: 1px;
+  margin: 9px 0;
+  overflow: hidden;
+  background-color: #e5e5e5;
+}
+.nav > li > a > img {
+  max-width: none;
+}
+.nav-tabs {
+  border-bottom: 1px solid #ddd;
+}
+.nav-tabs > li {
+  float: left;
+  margin-bottom: -1px;
+}
+.nav-tabs > li > a {
+  margin-right: 2px;
+  line-height: 1.42857143;
+  border: 1px solid transparent;
+  border-radius: 4px 4px 0 0;
+}
+.nav-tabs > li > a:hover {
+  border-color: #eee #eee #ddd;
+}
+.nav-tabs > li.active > a,
+.nav-tabs > li.active > a:hover,
+.nav-tabs > li.active > a:focus {
+  color: #555;
+  cursor: default;
+  background-color: #fff;
+  border: 1px solid #ddd;
+  border-bottom-color: transparent;
+}
+.nav-tabs.nav-justified {
+  width: 100%;
+  border-bottom: 0;
+}
+.nav-tabs.nav-justified > li {
+  float: none;
+}
+.nav-tabs.nav-justified > li > a {
+  margin-bottom: 5px;
+  text-align: center;
+}
+.nav-tabs.nav-justified > .dropdown .dropdown-menu {
+  top: auto;
+  left: auto;
+}
+@media (min-width: 768px) {
+  .nav-tabs.nav-justified > li {
+    display: table-cell;
+    width: 1%;
+  }
+  .nav-tabs.nav-justified > li > a {
+    margin-bottom: 0;
+  }
+}
+.nav-tabs.nav-justified > li > a {
+  margin-right: 0;
+  border-radius: 4px;
+}
+.nav-tabs.nav-justified > .active > a,
+.nav-tabs.nav-justified > .active > a:hover,
+.nav-tabs.nav-justified > .active > a:focus {
+  border: 1px solid #ddd;
+}
+@media (min-width: 768px) {
+  .nav-tabs.nav-justified > li > a {
+    border-bottom: 1px solid #ddd;
+    border-radius: 4px 4px 0 0;
+  }
+  .nav-tabs.nav-justified > .active > a,
+  .nav-tabs.nav-justified > .active > a:hover,
+  .nav-tabs.nav-justified > .active > a:focus {
+    border-bottom-color: #fff;
+  }
+}
+.nav-pills > li {
+  float: left;
+}
+.nav-pills > li > a {
+  border-radius: 4px;
+}
+.nav-pills > li + li {
+  margin-left: 2px;
+}
+.nav-pills > li.active > a,
+.nav-pills > li.active > a:hover,
+.nav-pills > li.active > a:focus {
+  color: #fff;
+  background-color: #337ab7;
+}
+.nav-stacked > li {
+  float: none;
+}
+.nav-stacked > li + li {
+  margin-top: 2px;
+  margin-left: 0;
+}
+.nav-justified {
+  width: 100%;
+}
+.nav-justified > li {
+  float: none;
+}
+.nav-justified > li > a {
+  margin-bottom: 5px;
+  text-align: center;
+}
+.nav-justified > .dropdown .dropdown-menu {
+  top: auto;
+  left: auto;
+}
+@media (min-width: 768px) {
+  .nav-justified > li {
+    display: table-cell;
+    width: 1%;
+  }
+  .nav-justified > li > a {
+    margin-bottom: 0;
+  }
+}
+.nav-tabs-justified {
+  border-bottom: 0;
+}
+.nav-tabs-justified > li > a {
+  margin-right: 0;
+  border-radius: 4px;
+}
+.nav-tabs-justified > .active > a,
+.nav-tabs-justified > .active > a:hover,
+.nav-tabs-justified > .active > a:focus {
+  border: 1px solid #ddd;
+}
+@media (min-width: 768px) {
+  .nav-tabs-justified > li > a {
+    border-bottom: 1px solid #ddd;
+    border-radius: 4px 4px 0 0;
+  }
+  .nav-tabs-justified > .active > a,
+  .nav-tabs-justified > .active > a:hover,
+  .nav-tabs-justified > .active > a:focus {
+    border-bottom-color: #fff;
+  }
+}
+.tab-content > .tab-pane {
+  display: none;
+}
+.tab-content > .active {
+  display: block;
+}
+.nav-tabs .dropdown-menu {
+  margin-top: -1px;
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+}
+.navbar {
+  position: relative;
+  min-height: 50px;
+  margin-bottom: 20px;
+  border: 1px solid transparent;
+}
+@media (min-width: 768px) {
+  .navbar {
+    border-radius: 4px;
+  }
+}
+@media (min-width: 768px) {
+  .navbar-header {
+    float: left;
+  }
+}
+.navbar-collapse {
+  padding-right: 15px;
+  padding-left: 15px;
+  overflow-x: visible;
+  -webkit-overflow-scrolling: touch;
+  border-top: 1px solid transparent;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1);
+}
+.navbar-collapse.in {
+  overflow-y: auto;
+}
+@media (min-width: 768px) {
+  .navbar-collapse {
+    width: auto;
+    border-top: 0;
+    -webkit-box-shadow: none;
+            box-shadow: none;
+  }
+  .navbar-collapse.collapse {
+    display: block !important;
+    height: auto !important;
+    padding-bottom: 0;
+    overflow: visible !important;
+  }
+  .navbar-collapse.in {
+    overflow-y: visible;
+  }
+  .navbar-fixed-top .navbar-collapse,
+  .navbar-static-top .navbar-collapse,
+  .navbar-fixed-bottom .navbar-collapse {
+    padding-right: 0;
+    padding-left: 0;
+  }
+}
+.navbar-fixed-top .navbar-collapse,
+.navbar-fixed-bottom .navbar-collapse {
+  max-height: 340px;
+}
+@media (max-device-width: 480px) and (orientation: landscape) {
+  .navbar-fixed-top .navbar-collapse,
+  .navbar-fixed-bottom .navbar-collapse {
+    max-height: 200px;
+  }
+}
+.container > .navbar-header,
+.container-fluid > .navbar-header,
+.container > .navbar-collapse,
+.container-fluid > .navbar-collapse {
+  margin-right: -15px;
+  margin-left: -15px;
+}
+@media (min-width: 768px) {
+  .container > .navbar-header,
+  .container-fluid > .navbar-header,
+  .container > .navbar-collapse,
+  .container-fluid > .navbar-collapse {
+    margin-right: 0;
+    margin-left: 0;
+  }
+}
+.navbar-static-top {
+  z-index: 1000;
+  border-width: 0 0 1px;
+}
+@media (min-width: 768px) {
+  .navbar-static-top {
+    border-radius: 0;
+  }
+}
+.navbar-fixed-top,
+.navbar-fixed-bottom {
+  position: fixed;
+  right: 0;
+  left: 0;
+  z-index: 1030;
+}
+@media (min-width: 768px) {
+  .navbar-fixed-top,
+  .navbar-fixed-bottom {
+    border-radius: 0;
+  }
+}
+.navbar-fixed-top {
+  top: 0;
+  border-width: 0 0 1px;
+}
+.navbar-fixed-bottom {
+  bottom: 0;
+  margin-bottom: 0;
+  border-width: 1px 0 0;
+}
+.navbar-brand {
+  float: left;
+  height: 50px;
+  padding: 15px 15px;
+  font-size: 18px;
+  line-height: 20px;
+}
+.navbar-brand:hover,
+.navbar-brand:focus {
+  text-decoration: none;
+}
+.navbar-brand > img {
+  display: block;
+}
+@media (min-width: 768px) {
+  .navbar > .container .navbar-brand,
+  .navbar > .container-fluid .navbar-brand {
+    margin-left: -15px;
+  }
+}
+.navbar-toggle {
+  position: relative;
+  float: right;
+  padding: 9px 10px;
+  margin-top: 8px;
+  margin-right: 15px;
+  margin-bottom: 8px;
+  background-color: transparent;
+  background-image: none;
+  border: 1px solid transparent;
+  border-radius: 4px;
+}
+.navbar-toggle:focus {
+  outline: 0;
+}
+.navbar-toggle .icon-bar {
+  display: block;
+  width: 22px;
+  height: 2px;
+  border-radius: 1px;
+}
+.navbar-toggle .icon-bar + .icon-bar {
+  margin-top: 4px;
+}
+@media (min-width: 768px) {
+  .navbar-toggle {
+    display: none;
+  }
+}
+.navbar-nav {
+  margin: 7.5px -15px;
+}
+.navbar-nav > li > a {
+  padding-top: 10px;
+  padding-bottom: 10px;
+  line-height: 20px;
+}
+@media (max-width: 767px) {
+  .navbar-nav .open .dropdown-menu {
+    position: static;
+    float: none;
+    width: auto;
+    margin-top: 0;
+    background-color: transparent;
+    border: 0;
+    -webkit-box-shadow: none;
+            box-shadow: none;
+  }
+  .navbar-nav .open .dropdown-menu > li > a,
+  .navbar-nav .open .dropdown-menu .dropdown-header {
+    padding: 5px 15px 5px 25px;
+  }
+  .navbar-nav .open .dropdown-menu > li > a {
+    line-height: 20px;
+  }
+  .navbar-nav .open .dropdown-menu > li > a:hover,
+  .navbar-nav .open .dropdown-menu > li > a:focus {
+    background-image: none;
+  }
+}
+@media (min-width: 768px) {
+  .navbar-nav {
+    float: left;
+    margin: 0;
+  }
+  .navbar-nav > li {
+    float: left;
+  }
+  .navbar-nav > li > a {
+    padding-top: 15px;
+    padding-bottom: 15px;
+  }
+}
+.navbar-form {
+  padding: 10px 15px;
+  margin-top: 8px;
+  margin-right: -15px;
+  margin-bottom: 8px;
+  margin-left: -15px;
+  border-top: 1px solid transparent;
+  border-bottom: 1px solid transparent;
+  -webkit-box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 0 rgba(255, 255, 255, .1);
+          box-shadow: inset 0 1px 0 rgba(255, 255, 255, .1), 0 1px 0 rgba(255, 255, 255, .1);
+}
+@media (min-width: 768px) {
+  .navbar-form .form-group {
+    display: inline-block;
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .navbar-form .form-control {
+    display: inline-block;
+    width: auto;
+    vertical-align: middle;
+  }
+  .navbar-form .form-control-static {
+    display: inline-block;
+  }
+  .navbar-form .input-group {
+    display: inline-table;
+    vertical-align: middle;
+  }
+  .navbar-form .input-group .input-group-addon,
+  .navbar-form .input-group .input-group-btn,
+  .navbar-form .input-group .form-control {
+    width: auto;
+  }
+  .navbar-form .input-group > .form-control {
+    width: 100%;
+  }
+  .navbar-form .control-label {
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .navbar-form .radio,
+  .navbar-form .checkbox {
+    display: inline-block;
+    margin-top: 0;
+    margin-bottom: 0;
+    vertical-align: middle;
+  }
+  .navbar-form .radio label,
+  .navbar-form .checkbox label {
+    padding-left: 0;
+  }
+  .navbar-form .radio input[type="radio"],
+  .navbar-form .checkbox input[type="checkbox"] {
+    position: relative;
+    margin-left: 0;
+  }
+  .navbar-form .has-feedback .form-control-feedback {
+    top: 0;
+  }
+}
+@media (max-width: 767px) {
+  .navbar-form .form-group {
+    margin-bottom: 5px;
+  }
+  .navbar-form .form-group:last-child {
+    margin-bottom: 0;
+  }
+}
+@media (min-width: 768px) {
+  .navbar-form {
+    width: auto;
+    padding-top: 0;
+    padding-bottom: 0;
+    margin-right: 0;
+    margin-left: 0;
+    border: 0;
+    -webkit-box-shadow: none;
+            box-shadow: none;
+  }
+}
+.navbar-nav > li > .dropdown-menu {
+  margin-top: 0;
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+}
+.navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
+  margin-bottom: 0;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-right-radius: 0;
+  border-bottom-left-radius: 0;
+}
+.navbar-btn {
+  margin-top: 8px;
+  margin-bottom: 8px;
+}
+.navbar-btn.btn-sm {
+  margin-top: 10px;
+  margin-bottom: 10px;
+}
+.navbar-btn.btn-xs {
+  margin-top: 14px;
+  margin-bottom: 14px;
+}
+.navbar-text {
+  margin-top: 15px;
+  margin-bottom: 15px;
+}
+@media (min-width: 768px) {
+  .navbar-text {
+    float: left;
+    margin-right: 15px;
+    margin-left: 15px;
+  }
+}
+@media (min-width: 768px) {
+  .navbar-left {
+    float: left !important;
+  }
+  .navbar-right {
+    float: right !important;
+    margin-right: -15px;
+  }
+  .navbar-right ~ .navbar-right {
+    margin-right: 0;
+  }
+}
+.navbar-default {
+  background-color: #f8f8f8;
+  border-color: #e7e7e7;
+}
+.navbar-default .navbar-brand {
+  color: #777;
+}
+.navbar-default .navbar-brand:hover,
+.navbar-default .navbar-brand:focus {
+  color: #5e5e5e;
+  background-color: transparent;
+}
+.navbar-default .navbar-text {
+  color: #777;
+}
+.navbar-default .navbar-nav > li > a {
+  color: #777;
+}
+.navbar-default .navbar-nav > li > a:hover,
+.navbar-default .navbar-nav > li > a:focus {
+  color: #333;
+  background-color: transparent;
+}
+.navbar-default .navbar-nav > .active > a,
+.navbar-default .navbar-nav > .active > a:hover,
+.navbar-default .navbar-nav > .active > a:focus {
+  color: #555;
+  background-color: #e7e7e7;
+}
+.navbar-default .navbar-nav > .disabled > a,
+.navbar-default .navbar-nav > .disabled > a:hover,
+.navbar-default .navbar-nav > .disabled > a:focus {
+  color: #ccc;
+  background-color: transparent;
+}
+.navbar-default .navbar-toggle {
+  border-color: #ddd;
+}
+.navbar-default .navbar-toggle:hover,
+.navbar-default .navbar-toggle:focus {
+  background-color: #ddd;
+}
+.navbar-default .navbar-toggle .icon-bar {
+  background-color: #888;
+}
+.navbar-default .navbar-collapse,
+.navbar-default .navbar-form {
+  border-color: #e7e7e7;
+}
+.navbar-default .navbar-nav > .open > a,
+.navbar-default .navbar-nav > .open > a:hover,
+.navbar-default .navbar-nav > .open > a:focus {
+  color: #555;
+  background-color: #e7e7e7;
+}
+@media (max-width: 767px) {
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a {
+    color: #777;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > li > a:focus {
+    color: #333;
+    background-color: transparent;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a,
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > .active > a:focus {
+    color: #555;
+    background-color: #e7e7e7;
+  }
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a,
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:hover,
+  .navbar-default .navbar-nav .open .dropdown-menu > .disabled > a:focus {
+    color: #ccc;
+    background-color: transparent;
+  }
+}
+.navbar-default .navbar-link {
+  color: #777;
+}
+.navbar-default .navbar-link:hover {
+  color: #333;
+}
+.navbar-default .btn-link {
+  color: #777;
+}
+.navbar-default .btn-link:hover,
+.navbar-default .btn-link:focus {
+  color: #333;
+}
+.navbar-default .btn-link[disabled]:hover,
+fieldset[disabled] .navbar-default .btn-link:hover,
+.navbar-default .btn-link[disabled]:focus,
+fieldset[disabled] .navbar-default .btn-link:focus {
+  color: #ccc;
+}
+.navbar-inverse {
+  background-color: #222;
+  border-color: #080808;
+}
+.navbar-inverse .navbar-brand {
+  color: #9d9d9d;
+}
+.navbar-inverse .navbar-brand:hover,
+.navbar-inverse .navbar-brand:focus {
+  color: #fff;
+  background-color: transparent;
+}
+.navbar-inverse .navbar-text {
+  color: #9d9d9d;
+}
+.navbar-inverse .navbar-nav > li > a {
+  color: #9d9d9d;
+}
+.navbar-inverse .navbar-nav > li > a:hover,
+.navbar-inverse .navbar-nav > li > a:focus {
+  color: #fff;
+  background-color: transparent;
+}
+.navbar-inverse .navbar-nav > .active > a,
+.navbar-inverse .navbar-nav > .active > a:hover,
+.navbar-inverse .navbar-nav > .active > a:focus {
+  color: #fff;
+  background-color: #080808;
+}
+.navbar-inverse .navbar-nav > .disabled > a,
+.navbar-inverse .navbar-nav > .disabled > a:hover,
+.navbar-inverse .navbar-nav > .disabled > a:focus {
+  color: #444;
+  background-color: transparent;
+}
+.navbar-inverse .navbar-toggle {
+  border-color: #333;
+}
+.navbar-inverse .navbar-toggle:hover,
+.navbar-inverse .navbar-toggle:focus {
+  background-color: #333;
+}
+.navbar-inverse .navbar-toggle .icon-bar {
+  background-color: #fff;
+}
+.navbar-inverse .navbar-collapse,
+.navbar-inverse .navbar-form {
+  border-color: #101010;
+}
+.navbar-inverse .navbar-nav > .open > a,
+.navbar-inverse .navbar-nav > .open > a:hover,
+.navbar-inverse .navbar-nav > .open > a:focus {
+  color: #fff;
+  background-color: #080808;
+}
+@media (max-width: 767px) {
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .dropdown-header {
+    border-color: #080808;
+  }
+  .navbar-inverse .navbar-nav .open .dropdown-menu .divider {
+    background-color: #080808;
+  }
+  .navbar-inverse .navbar-nav .open .dropdown-menu > li > a {
+    color: #9d9d9d;
+  }
+  .navbar-inverse .navbar-nav .open .dropdown-menu > li > a:hover,
+  .navbar-inverse .navbar-nav .open .dropdown-menu > li > a:focus {
+    color: #fff;
+    background-color: transparent;
+  }
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a,
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a:hover,
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .active > a:focus {
+    color: #fff;
+    background-color: #080808;
+  }
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a,
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a:hover,
+  .navbar-inverse .navbar-nav .open .dropdown-menu > .disabled > a:focus {
+    color: #444;
+    background-color: transparent;
+  }
+}
+.navbar-inverse .navbar-link {
+  color: #9d9d9d;
+}
+.navbar-inverse .navbar-link:hover {
+  color: #fff;
+}
+.navbar-inverse .btn-link {
+  color: #9d9d9d;
+}
+.navbar-inverse .btn-link:hover,
+.navbar-inverse .btn-link:focus {
+  color: #fff;
+}
+.navbar-inverse .btn-link[disabled]:hover,
+fieldset[disabled] .navbar-inverse .btn-link:hover,
+.navbar-inverse .btn-link[disabled]:focus,
+fieldset[disabled] .navbar-inverse .btn-link:focus {
+  color: #444;
+}
+.breadcrumb {
+  padding: 8px 15px;
+  margin-bottom: 20px;
+  list-style: none;
+  background-color: #f5f5f5;
+  border-radius: 4px;
+}
+.breadcrumb > li {
+  display: inline-block;
+}
+.breadcrumb > li + li:before {
+  padding: 0 5px;
+  color: #ccc;
+  content: "/\00a0";
+}
+.breadcrumb > .active {
+  color: #777;
+}
+.pagination {
+  display: inline-block;
+  padding-left: 0;
+  margin: 20px 0;
+  border-radius: 4px;
+}
+.pagination > li {
+  display: inline;
+}
+.pagination > li > a,
+.pagination > li > span {
+  position: relative;
+  float: left;
+  padding: 6px 12px;
+  margin-left: -1px;
+  line-height: 1.42857143;
+  color: #337ab7;
+  text-decoration: none;
+  background-color: #fff;
+  border: 1px solid #ddd;
+}
+.pagination > li:first-child > a,
+.pagination > li:first-child > span {
+  margin-left: 0;
+  border-top-left-radius: 4px;
+  border-bottom-left-radius: 4px;
+}
+.pagination > li:last-child > a,
+.pagination > li:last-child > span {
+  border-top-right-radius: 4px;
+  border-bottom-right-radius: 4px;
+}
+.pagination > li > a:hover,
+.pagination > li > span:hover,
+.pagination > li > a:focus,
+.pagination > li > span:focus {
+  z-index: 2;
+  color: #23527c;
+  background-color: #eee;
+  border-color: #ddd;
+}
+.pagination > .active > a,
+.pagination > .active > span,
+.pagination > .active > a:hover,
+.pagination > .active > span:hover,
+.pagination > .active > a:focus,
+.pagination > .active > span:focus {
+  z-index: 3;
+  color: #fff;
+  cursor: default;
+  background-color: #337ab7;
+  border-color: #337ab7;
+}
+.pagination > .disabled > span,
+.pagination > .disabled > span:hover,
+.pagination > .disabled > span:focus,
+.pagination > .disabled > a,
+.pagination > .disabled > a:hover,
+.pagination > .disabled > a:focus {
+  color: #777;
+  cursor: not-allowed;
+  background-color: #fff;
+  border-color: #ddd;
+}
+.pagination-lg > li > a,
+.pagination-lg > li > span {
+  padding: 10px 16px;
+  font-size: 18px;
+  line-height: 1.3333333;
+}
+.pagination-lg > li:first-child > a,
+.pagination-lg > li:first-child > span {
+  border-top-left-radius: 6px;
+  border-bottom-left-radius: 6px;
+}
+.pagination-lg > li:last-child > a,
+.pagination-lg > li:last-child > span {
+  border-top-right-radius: 6px;
+  border-bottom-right-radius: 6px;
+}
+.pagination-sm > li > a,
+.pagination-sm > li > span {
+  padding: 5px 10px;
+  font-size: 12px;
+  line-height: 1.5;
+}
+.pagination-sm > li:first-child > a,
+.pagination-sm > li:first-child > span {
+  border-top-left-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+.pagination-sm > li:last-child > a,
+.pagination-sm > li:last-child > span {
+  border-top-right-radius: 3px;
+  border-bottom-right-radius: 3px;
+}
+.pager {
+  padding-left: 0;
+  margin: 20px 0;
+  text-align: center;
+  list-style: none;
+}
+.pager li {
+  display: inline;
+}
+.pager li > a,
+.pager li > span {
+  display: inline-block;
+  padding: 5px 14px;
+  background-color: #fff;
+  border: 1px solid #ddd;
+  border-radius: 15px;
+}
+.pager li > a:hover,
+.pager li > a:focus {
+  text-decoration: none;
+  background-color: #eee;
+}
+.pager .next > a,
+.pager .next > span {
+  float: right;
+}
+.pager .previous > a,
+.pager .previous > span {
+  float: left;
+}
+.pager .disabled > a,
+.pager .disabled > a:hover,
+.pager .disabled > a:focus,
+.pager .disabled > span {
+  color: #777;
+  cursor: not-allowed;
+  background-color: #fff;
+}
+.label {
+  display: inline;
+  padding: .2em .6em .3em;
+  font-size: 75%;
+  font-weight: bold;
+  line-height: 1;
+  color: #fff;
+  text-align: center;
+  white-space: nowrap;
+  vertical-align: baseline;
+  border-radius: .25em;
+}
+a.label:hover,
+a.label:focus {
+  color: #fff;
+  text-decoration: none;
+  cursor: pointer;
+}
+.label:empty {
+  display: none;
+}
+.btn .label {
+  position: relative;
+  top: -1px;
+}
+.label-default {
+  background-color: #777;
+}
+.label-default[href]:hover,
+.label-default[href]:focus {
+  background-color: #5e5e5e;
+}
+.label-primary {
+  background-color: #337ab7;
+}
+.label-primary[href]:hover,
+.label-primary[href]:focus {
+  background-color: #286090;
+}
+.label-success {
+  background-color: #5cb85c;
+}
+.label-success[href]:hover,
+.label-success[href]:focus {
+  background-color: #449d44;
+}
+.label-info {
+  background-color: #5bc0de;
+}
+.label-info[href]:hover,
+.label-info[href]:focus {
+  background-color: #31b0d5;
+}
+.label-warning {
+  background-color: #f0ad4e;
+}
+.label-warning[href]:hover,
+.label-warning[href]:focus {
+  background-color: #ec971f;
+}
+.label-danger {
+  background-color: #d9534f;
+}
+.label-danger[href]:hover,
+.label-danger[href]:focus {
+  background-color: #c9302c;
+}
+.badge {
+  display: inline-block;
+  min-width: 10px;
+  padding: 3px 7px;
+  font-size: 12px;
+  font-weight: bold;
+  line-height: 1;
+  color: #fff;
+  text-align: center;
+  white-space: nowrap;
+  vertical-align: middle;
+  background-color: #777;
+  border-radius: 10px;
+}
+.badge:empty {
+  display: none;
+}
+.btn .badge {
+  position: relative;
+  top: -1px;
+}
+.btn-xs .badge,
+.btn-group-xs > .btn .badge {
+  top: 0;
+  padding: 1px 5px;
+}
+a.badge:hover,
+a.badge:focus {
+  color: #fff;
+  text-decoration: none;
+  cursor: pointer;
+}
+.list-group-item.active > .badge,
+.nav-pills > .active > a > .badge {
+  color: #337ab7;
+  background-color: #fff;
+}
+.list-group-item > .badge {
+  float: right;
+}
+.list-group-item > .badge + .badge {
+  margin-right: 5px;
+}
+.nav-pills > li > a > .badge {
+  margin-left: 3px;
+}
+.jumbotron {
+  padding-top: 30px;
+  padding-bottom: 30px;
+  margin-bottom: 30px;
+  color: inherit;
+  background-color: #eee;
+}
+.jumbotron h1,
+.jumbotron .h1 {
+  color: inherit;
+}
+.jumbotron p {
+  margin-bottom: 15px;
+  font-size: 21px;
+  font-weight: 200;
+}
+.jumbotron > hr {
+  border-top-color: #d5d5d5;
+}
+.container .jumbotron,
+.container-fluid .jumbotron {
+  padding-right: 15px;
+  padding-left: 15px;
+  border-radius: 6px;
+}
+.jumbotron .container {
+  max-width: 100%;
+}
+@media screen and (min-width: 768px) {
+  .jumbotron {
+    padding-top: 48px;
+    padding-bottom: 48px;
+  }
+  .container .jumbotron,
+  .container-fluid .jumbotron {
+    padding-right: 60px;
+    padding-left: 60px;
+  }
+  .jumbotron h1,
+  .jumbotron .h1 {
+    font-size: 63px;
+  }
+}
+.thumbnail {
+  display: block;
+  padding: 4px;
+  margin-bottom: 20px;
+  line-height: 1.42857143;
+  background-color: #fff;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  -webkit-transition: border .2s ease-in-out;
+       -o-transition: border .2s ease-in-out;
+          transition: border .2s ease-in-out;
+}
+.thumbnail > img,
+.thumbnail a > img {
+  margin-right: auto;
+  margin-left: auto;
+}
+a.thumbnail:hover,
+a.thumbnail:focus,
+a.thumbnail.active {
+  border-color: #337ab7;
+}
+.thumbnail .caption {
+  padding: 9px;
+  color: #333;
+}
+.alert {
+  padding: 15px;
+  margin-bottom: 20px;
+  border: 1px solid transparent;
+  border-radius: 4px;
+}
+.alert h4 {
+  margin-top: 0;
+  color: inherit;
+}
+.alert .alert-link {
+  font-weight: bold;
+}
+.alert > p,
+.alert > ul {
+  margin-bottom: 0;
+}
+.alert > p + p {
+  margin-top: 5px;
+}
+.alert-dismissable,
+.alert-dismissible {
+  padding-right: 35px;
+}
+.alert-dismissable .close,
+.alert-dismissible .close {
+  position: relative;
+  top: -2px;
+  right: -21px;
+  color: inherit;
+}
+.alert-success {
+  color: #3c763d;
+  background-color: #dff0d8;
+  border-color: #d6e9c6;
+}
+.alert-success hr {
+  border-top-color: #c9e2b3;
+}
+.alert-success .alert-link {
+  color: #2b542c;
+}
+.alert-info {
+  color: #31708f;
+  background-color: #d9edf7;
+  border-color: #bce8f1;
+}
+.alert-info hr {
+  border-top-color: #a6e1ec;
+}
+.alert-info .alert-link {
+  color: #245269;
+}
+.alert-warning {
+  color: #8a6d3b;
+  background-color: #fcf8e3;
+  border-color: #faebcc;
+}
+.alert-warning hr {
+  border-top-color: #f7e1b5;
+}
+.alert-warning .alert-link {
+  color: #66512c;
+}
+.alert-danger {
+  color: #a94442;
+  background-color: #f2dede;
+  border-color: #ebccd1;
+}
+.alert-danger hr {
+  border-top-color: #e4b9c0;
+}
+.alert-danger .alert-link {
+  color: #843534;
+}
+@-webkit-keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+@-o-keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+@keyframes progress-bar-stripes {
+  from {
+    background-position: 40px 0;
+  }
+  to {
+    background-position: 0 0;
+  }
+}
+.progress {
+  height: 20px;
+  margin-bottom: 20px;
+  overflow: hidden;
+  background-color: #f5f5f5;
+  border-radius: 4px;
+  -webkit-box-shadow: inset 0 1px 2px rgba(0, 0, 0, .1);
+          box-shadow: inset 0 1px 2px rgba(0, 0, 0, .1);
+}
+.progress-bar {
+  float: left;
+  width: 0;
+  height: 100%;
+  font-size: 12px;
+  line-height: 20px;
+  color: #fff;
+  text-align: center;
+  background-color: #337ab7;
+  -webkit-box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .15);
+          box-shadow: inset 0 -1px 0 rgba(0, 0, 0, .15);
+  -webkit-transition: width .6s ease;
+       -o-transition: width .6s ease;
+          transition: width .6s ease;
+}
+.progress-striped .progress-bar,
+.progress-bar-striped {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  -webkit-background-size: 40px 40px;
+          background-size: 40px 40px;
+}
+.progress.active .progress-bar,
+.progress-bar.active {
+  -webkit-animation: progress-bar-stripes 2s linear infinite;
+       -o-animation: progress-bar-stripes 2s linear infinite;
+          animation: progress-bar-stripes 2s linear infinite;
+}
+.progress-bar-success {
+  background-color: #5cb85c;
+}
+.progress-striped .progress-bar-success {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+}
+.progress-bar-info {
+  background-color: #5bc0de;
+}
+.progress-striped .progress-bar-info {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+}
+.progress-bar-warning {
+  background-color: #f0ad4e;
+}
+.progress-striped .progress-bar-warning {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+}
+.progress-bar-danger {
+  background-color: #d9534f;
+}
+.progress-striped .progress-bar-danger {
+  background-image: -webkit-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:      -o-linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+  background-image:         linear-gradient(45deg, rgba(255, 255, 255, .15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, .15) 50%, rgba(255, 255, 255, .15) 75%, transparent 75%, transparent);
+}
+.media {
+  margin-top: 15px;
+}
+.media:first-child {
+  margin-top: 0;
+}
+.media,
+.media-body {
+  overflow: hidden;
+  zoom: 1;
+}
+.media-body {
+  width: 10000px;
+}
+.media-object {
+  display: block;
+}
+.media-object.img-thumbnail {
+  max-width: none;
+}
+.media-right,
+.media > .pull-right {
+  padding-left: 10px;
+}
+.media-left,
+.media > .pull-left {
+  padding-right: 10px;
+}
+.media-left,
+.media-right,
+.media-body {
+  display: table-cell;
+  vertical-align: top;
+}
+.media-middle {
+  vertical-align: middle;
+}
+.media-bottom {
+  vertical-align: bottom;
+}
+.media-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+.media-list {
+  padding-left: 0;
+  list-style: none;
+}
+.list-group {
+  padding-left: 0;
+  margin-bottom: 20px;
+}
+.list-group-item {
+  position: relative;
+  display: block;
+  padding: 10px 15px;
+  margin-bottom: -1px;
+  background-color: #fff;
+  border: 1px solid #ddd;
+}
+.list-group-item:first-child {
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+}
+.list-group-item:last-child {
+  margin-bottom: 0;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+}
+a.list-group-item,
+button.list-group-item {
+  color: #555;
+}
+a.list-group-item .list-group-item-heading,
+button.list-group-item .list-group-item-heading {
+  color: #333;
+}
+a.list-group-item:hover,
+button.list-group-item:hover,
+a.list-group-item:focus,
+button.list-group-item:focus {
+  color: #555;
+  text-decoration: none;
+  background-color: #f5f5f5;
+}
+button.list-group-item {
+  width: 100%;
+  text-align: left;
+}
+.list-group-item.disabled,
+.list-group-item.disabled:hover,
+.list-group-item.disabled:focus {
+  color: #777;
+  cursor: not-allowed;
+  background-color: #eee;
+}
+.list-group-item.disabled .list-group-item-heading,
+.list-group-item.disabled:hover .list-group-item-heading,
+.list-group-item.disabled:focus .list-group-item-heading {
+  color: inherit;
+}
+.list-group-item.disabled .list-group-item-text,
+.list-group-item.disabled:hover .list-group-item-text,
+.list-group-item.disabled:focus .list-group-item-text {
+  color: #777;
+}
+.list-group-item.active,
+.list-group-item.active:hover,
+.list-group-item.active:focus {
+  z-index: 2;
+  color: #fff;
+  background-color: #337ab7;
+  border-color: #337ab7;
+}
+.list-group-item.active .list-group-item-heading,
+.list-group-item.active:hover .list-group-item-heading,
+.list-group-item.active:focus .list-group-item-heading,
+.list-group-item.active .list-group-item-heading > small,
+.list-group-item.active:hover .list-group-item-heading > small,
+.list-group-item.active:focus .list-group-item-heading > small,
+.list-group-item.active .list-group-item-heading > .small,
+.list-group-item.active:hover .list-group-item-heading > .small,
+.list-group-item.active:focus .list-group-item-heading > .small {
+  color: inherit;
+}
+.list-group-item.active .list-group-item-text,
+.list-group-item.active:hover .list-group-item-text,
+.list-group-item.active:focus .list-group-item-text {
+  color: #c7ddef;
+}
+.list-group-item-success {
+  color: #3c763d;
+  background-color: #dff0d8;
+}
+a.list-group-item-success,
+button.list-group-item-success {
+  color: #3c763d;
+}
+a.list-group-item-success .list-group-item-heading,
+button.list-group-item-success .list-group-item-heading {
+  color: inherit;
+}
+a.list-group-item-success:hover,
+button.list-group-item-success:hover,
+a.list-group-item-success:focus,
+button.list-group-item-success:focus {
+  color: #3c763d;
+  background-color: #d0e9c6;
+}
+a.list-group-item-success.active,
+button.list-group-item-success.active,
+a.list-group-item-success.active:hover,
+button.list-group-item-success.active:hover,
+a.list-group-item-success.active:focus,
+button.list-group-item-success.active:focus {
+  color: #fff;
+  background-color: #3c763d;
+  border-color: #3c763d;
+}
+.list-group-item-info {
+  color: #31708f;
+  background-color: #d9edf7;
+}
+a.list-group-item-info,
+button.list-group-item-info {
+  color: #31708f;
+}
+a.list-group-item-info .list-group-item-heading,
+button.list-group-item-info .list-group-item-heading {
+  color: inherit;
+}
+a.list-group-item-info:hover,
+button.list-group-item-info:hover,
+a.list-group-item-info:focus,
+button.list-group-item-info:focus {
+  color: #31708f;
+  background-color: #c4e3f3;
+}
+a.list-group-item-info.active,
+button.list-group-item-info.active,
+a.list-group-item-info.active:hover,
+button.list-group-item-info.active:hover,
+a.list-group-item-info.active:focus,
+button.list-group-item-info.active:focus {
+  color: #fff;
+  background-color: #31708f;
+  border-color: #31708f;
+}
+.list-group-item-warning {
+  color: #8a6d3b;
+  background-color: #fcf8e3;
+}
+a.list-group-item-warning,
+button.list-group-item-warning {
+  color: #8a6d3b;
+}
+a.list-group-item-warning .list-group-item-heading,
+button.list-group-item-warning .list-group-item-heading {
+  color: inherit;
+}
+a.list-group-item-warning:hover,
+button.list-group-item-warning:hover,
+a.list-group-item-warning:focus,
+button.list-group-item-warning:focus {
+  color: #8a6d3b;
+  background-color: #faf2cc;
+}
+a.list-group-item-warning.active,
+button.list-group-item-warning.active,
+a.list-group-item-warning.active:hover,
+button.list-group-item-warning.active:hover,
+a.list-group-item-warning.active:focus,
+button.list-group-item-warning.active:focus {
+  color: #fff;
+  background-color: #8a6d3b;
+  border-color: #8a6d3b;
+}
+.list-group-item-danger {
+  color: #a94442;
+  background-color: #f2dede;
+}
+a.list-group-item-danger,
+button.list-group-item-danger {
+  color: #a94442;
+}
+a.list-group-item-danger .list-group-item-heading,
+button.list-group-item-danger .list-group-item-heading {
+  color: inherit;
+}
+a.list-group-item-danger:hover,
+button.list-group-item-danger:hover,
+a.list-group-item-danger:focus,
+button.list-group-item-danger:focus {
+  color: #a94442;
+  background-color: #ebcccc;
+}
+a.list-group-item-danger.active,
+button.list-group-item-danger.active,
+a.list-group-item-danger.active:hover,
+button.list-group-item-danger.active:hover,
+a.list-group-item-danger.active:focus,
+button.list-group-item-danger.active:focus {
+  color: #fff;
+  background-color: #a94442;
+  border-color: #a94442;
+}
+.list-group-item-heading {
+  margin-top: 0;
+  margin-bottom: 5px;
+}
+.list-group-item-text {
+  margin-bottom: 0;
+  line-height: 1.3;
+}
+.panel {
+  margin-bottom: 20px;
+  background-color: #fff;
+  border: 1px solid transparent;
+  border-radius: 4px;
+  -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
+          box-shadow: 0 1px 1px rgba(0, 0, 0, .05);
+}
+.panel-body {
+  padding: 15px;
+}
+.panel-heading {
+  padding: 10px 15px;
+  border-bottom: 1px solid transparent;
+  border-top-left-radius: 3px;
+  border-top-right-radius: 3px;
+}
+.panel-heading > .dropdown .dropdown-toggle {
+  color: inherit;
+}
+.panel-title {
+  margin-top: 0;
+  margin-bottom: 0;
+  font-size: 16px;
+  color: inherit;
+}
+.panel-title > a,
+.panel-title > small,
+.panel-title > .small,
+.panel-title > small > a,
+.panel-title > .small > a {
+  color: inherit;
+}
+.panel-footer {
+  padding: 10px 15px;
+  background-color: #f5f5f5;
+  border-top: 1px solid #ddd;
+  border-bottom-right-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+.panel > .list-group,
+.panel > .panel-collapse > .list-group {
+  margin-bottom: 0;
+}
+.panel > .list-group .list-group-item,
+.panel > .panel-collapse > .list-group .list-group-item {
+  border-width: 1px 0;
+  border-radius: 0;
+}
+.panel > .list-group:first-child .list-group-item:first-child,
+.panel > .panel-collapse > .list-group:first-child .list-group-item:first-child {
+  border-top: 0;
+  border-top-left-radius: 3px;
+  border-top-right-radius: 3px;
+}
+.panel > .list-group:last-child .list-group-item:last-child,
+.panel > .panel-collapse > .list-group:last-child .list-group-item:last-child {
+  border-bottom: 0;
+  border-bottom-right-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+.panel > .panel-heading + .panel-collapse > .list-group .list-group-item:first-child {
+  border-top-left-radius: 0;
+  border-top-right-radius: 0;
+}
+.panel-heading + .list-group .list-group-item:first-child {
+  border-top-width: 0;
+}
+.list-group + .panel-footer {
+  border-top-width: 0;
+}
+.panel > .table,
+.panel > .table-responsive > .table,
+.panel > .panel-collapse > .table {
+  margin-bottom: 0;
+}
+.panel > .table caption,
+.panel > .table-responsive > .table caption,
+.panel > .panel-collapse > .table caption {
+  padding-right: 15px;
+  padding-left: 15px;
+}
+.panel > .table:first-child,
+.panel > .table-responsive:first-child > .table:first-child {
+  border-top-left-radius: 3px;
+  border-top-right-radius: 3px;
+}
+.panel > .table:first-child > thead:first-child > tr:first-child,
+.panel > .table-responsive:first-child > .table:first-child > thead:first-child > tr:first-child,
+.panel > .table:first-child > tbody:first-child > tr:first-child,
+.panel > .table-responsive:first-child > .table:first-child > tbody:first-child > tr:first-child {
+  border-top-left-radius: 3px;
+  border-top-right-radius: 3px;
+}
+.panel > .table:first-child > thead:first-child > tr:first-child td:first-child,
+.panel > .table-responsive:first-child > .table:first-child > thead:first-child > tr:first-child td:first-child,
+.panel > .table:first-child > tbody:first-child > tr:first-child td:first-child,
+.panel > .table-responsive:first-child > .table:first-child > tbody:first-child > tr:first-child td:first-child,
+.panel > .table:first-child > thead:first-child > tr:first-child th:first-child,
+.panel > .table-responsive:first-child > .table:first-child > thead:first-child > tr:first-child th:first-child,
+.panel > .table:first-child > tbody:first-child > tr:first-child th:first-child,
+.panel > .table-responsive:first-child > .table:first-child > tbody:first-child > tr:first-child th:first-child {
+  border-top-left-radius: 3px;
+}
+.panel > .table:first-child > thead:first-child > tr:first-child td:last-child,
+.panel > .table-responsive:first-child > .table:first-child > thead:first-child > tr:first-child td:last-child,
+.panel > .table:first-child > tbody:first-child > tr:first-child td:last-child,
+.panel > .table-responsive:first-child > .table:first-child > tbody:first-child > tr:first-child td:last-child,
+.panel > .table:first-child > thead:first-child > tr:first-child th:last-child,
+.panel > .table-responsive:first-child > .table:first-child > thead:first-child > tr:first-child th:last-child,
+.panel > .table:first-child > tbody:first-child > tr:first-child th:last-child,
+.panel > .table-responsive:first-child > .table:first-child > tbody:first-child > tr:first-child th:last-child {
+  border-top-right-radius: 3px;
+}
+.panel > .table:last-child,
+.panel > .table-responsive:last-child > .table:last-child {
+  border-bottom-right-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+.panel > .table:last-child > tbody:last-child > tr:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tbody:last-child > tr:last-child,
+.panel > .table:last-child > tfoot:last-child > tr:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tfoot:last-child > tr:last-child {
+  border-bottom-right-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+.panel > .table:last-child > tbody:last-child > tr:last-child td:first-child,
+.panel > .table-responsive:last-child > .table:last-child > tbody:last-child > tr:last-child td:first-child,
+.panel > .table:last-child > tfoot:last-child > tr:last-child td:first-child,
+.panel > .table-responsive:last-child > .table:last-child > tfoot:last-child > tr:last-child td:first-child,
+.panel > .table:last-child > tbody:last-child > tr:last-child th:first-child,
+.panel > .table-responsive:last-child > .table:last-child > tbody:last-child > tr:last-child th:first-child,
+.panel > .table:last-child > tfoot:last-child > tr:last-child th:first-child,
+.panel > .table-responsive:last-child > .table:last-child > tfoot:last-child > tr:last-child th:first-child {
+  border-bottom-left-radius: 3px;
+}
+.panel > .table:last-child > tbody:last-child > tr:last-child td:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tbody:last-child > tr:last-child td:last-child,
+.panel > .table:last-child > tfoot:last-child > tr:last-child td:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tfoot:last-child > tr:last-child td:last-child,
+.panel > .table:last-child > tbody:last-child > tr:last-child th:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tbody:last-child > tr:last-child th:last-child,
+.panel > .table:last-child > tfoot:last-child > tr:last-child th:last-child,
+.panel > .table-responsive:last-child > .table:last-child > tfoot:last-child > tr:last-child th:last-child {
+  border-bottom-right-radius: 3px;
+}
+.panel > .panel-body + .table,
+.panel > .panel-body + .table-responsive,
+.panel > .table + .panel-body,
+.panel > .table-responsive + .panel-body {
+  border-top: 1px solid #ddd;
+}
+.panel > .table > tbody:first-child > tr:first-child th,
+.panel > .table > tbody:first-child > tr:first-child td {
+  border-top: 0;
+}
+.panel > .table-bordered,
+.panel > .table-responsive > .table-bordered {
+  border: 0;
+}
+.panel > .table-bordered > thead > tr > th:first-child,
+.panel > .table-responsive > .table-bordered > thead > tr > th:first-child,
+.panel > .table-bordered > tbody > tr > th:first-child,
+.panel > .table-responsive > .table-bordered > tbody > tr > th:first-child,
+.panel > .table-bordered > tfoot > tr > th:first-child,
+.panel > .table-responsive > .table-bordered > tfoot > tr > th:first-child,
+.panel > .table-bordered > thead > tr > td:first-child,
+.panel > .table-responsive > .table-bordered > thead > tr > td:first-child,
+.panel > .table-bordered > tbody > tr > td:first-child,
+.panel > .table-responsive > .table-bordered > tbody > tr > td:first-child,
+.panel > .table-bordered > tfoot > tr > td:first-child,
+.panel > .table-responsive > .table-bordered > tfoot > tr > td:first-child {
+  border-left: 0;
+}
+.panel > .table-bordered > thead > tr > th:last-child,
+.panel > .table-responsive > .table-bordered > thead > tr > th:last-child,
+.panel > .table-bordered > tbody > tr > th:last-child,
+.panel > .table-responsive > .table-bordered > tbody > tr > th:last-child,
+.panel > .table-bordered > tfoot > tr > th:last-child,
+.panel > .table-responsive > .table-bordered > tfoot > tr > th:last-child,
+.panel > .table-bordered > thead > tr > td:last-child,
+.panel > .table-responsive > .table-bordered > thead > tr > td:last-child,
+.panel > .table-bordered > tbody > tr > td:last-child,
+.panel > .table-responsive > .table-bordered > tbody > tr > td:last-child,
+.panel > .table-bordered > tfoot > tr > td:last-child,
+.panel > .table-responsive > .table-bordered > tfoot > tr > td:last-child {
+  border-right: 0;
+}
+.panel > .table-bordered > thead > tr:first-child > td,
+.panel > .table-responsive > .table-bordered > thead > tr:first-child > td,
+.panel > .table-bordered > tbody > tr:first-child > td,
+.panel > .table-responsive > .table-bordered > tbody > tr:first-child > td,
+.panel > .table-bordered > thead > tr:first-child > th,
+.panel > .table-responsive > .table-bordered > thead > tr:first-child > th,
+.panel > .table-bordered > tbody > tr:first-child > th,
+.panel > .table-responsive > .table-bordered > tbody > tr:first-child > th {
+  border-bottom: 0;
+}
+.panel > .table-bordered > tbody > tr:last-child > td,
+.panel > .table-responsive > .table-bordered > tbody > tr:last-child > td,
+.panel > .table-bordered > tfoot > tr:last-child > td,
+.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > td,
+.panel > .table-bordered > tbody > tr:last-child > th,
+.panel > .table-responsive > .table-bordered > tbody > tr:last-child > th,
+.panel > .table-bordered > tfoot > tr:last-child > th,
+.panel > .table-responsive > .table-bordered > tfoot > tr:last-child > th {
+  border-bottom: 0;
+}
+.panel > .table-responsive {
+  margin-bottom: 0;
+  border: 0;
+}
+.panel-group {
+  margin-bottom: 20px;
+}
+.panel-group .panel {
+  margin-bottom: 0;
+  border-radius: 4px;
+}
+.panel-group .panel + .panel {
+  margin-top: 5px;
+}
+.panel-group .panel-heading {
+  border-bottom: 0;
+}
+.panel-group .panel-heading + .panel-collapse > .panel-body,
+.panel-group .panel-heading + .panel-collapse > .list-group {
+  border-top: 1px solid #ddd;
+}
+.panel-group .panel-footer {
+  border-top: 0;
+}
+.panel-group .panel-footer + .panel-collapse .panel-body {
+  border-bottom: 1px solid #ddd;
+}
+.panel-default {
+  border-color: #ddd;
+}
+.panel-default > .panel-heading {
+  color: #333;
+  background-color: #f5f5f5;
+  border-color: #ddd;
+}
+.panel-default > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #ddd;
+}
+.panel-default > .panel-heading .badge {
+  color: #f5f5f5;
+  background-color: #333;
+}
+.panel-default > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #ddd;
+}
+.panel-primary {
+  border-color: #337ab7;
+}
+.panel-primary > .panel-heading {
+  color: #fff;
+  background-color: #337ab7;
+  border-color: #337ab7;
+}
+.panel-primary > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #337ab7;
+}
+.panel-primary > .panel-heading .badge {
+  color: #337ab7;
+  background-color: #fff;
+}
+.panel-primary > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #337ab7;
+}
+.panel-success {
+  border-color: #d6e9c6;
+}
+.panel-success > .panel-heading {
+  color: #3c763d;
+  background-color: #dff0d8;
+  border-color: #d6e9c6;
+}
+.panel-success > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #d6e9c6;
+}
+.panel-success > .panel-heading .badge {
+  color: #dff0d8;
+  background-color: #3c763d;
+}
+.panel-success > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #d6e9c6;
+}
+.panel-info {
+  border-color: #bce8f1;
+}
+.panel-info > .panel-heading {
+  color: #31708f;
+  background-color: #d9edf7;
+  border-color: #bce8f1;
+}
+.panel-info > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #bce8f1;
+}
+.panel-info > .panel-heading .badge {
+  color: #d9edf7;
+  background-color: #31708f;
+}
+.panel-info > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #bce8f1;
+}
+.panel-warning {
+  border-color: #faebcc;
+}
+.panel-warning > .panel-heading {
+  color: #8a6d3b;
+  background-color: #fcf8e3;
+  border-color: #faebcc;
+}
+.panel-warning > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #faebcc;
+}
+.panel-warning > .panel-heading .badge {
+  color: #fcf8e3;
+  background-color: #8a6d3b;
+}
+.panel-warning > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #faebcc;
+}
+.panel-danger {
+  border-color: #ebccd1;
+}
+.panel-danger > .panel-heading {
+  color: #a94442;
+  background-color: #f2dede;
+  border-color: #ebccd1;
+}
+.panel-danger > .panel-heading + .panel-collapse > .panel-body {
+  border-top-color: #ebccd1;
+}
+.panel-danger > .panel-heading .badge {
+  color: #f2dede;
+  background-color: #a94442;
+}
+.panel-danger > .panel-footer + .panel-collapse > .panel-body {
+  border-bottom-color: #ebccd1;
+}
+.embed-responsive {
+  position: relative;
+  display: block;
+  height: 0;
+  padding: 0;
+  overflow: hidden;
+}
+.embed-responsive .embed-responsive-item,
+.embed-responsive iframe,
+.embed-responsive embed,
+.embed-responsive object,
+.embed-responsive video {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: 100%;
+  height: 100%;
+  border: 0;
+}
+.embed-responsive-16by9 {
+  padding-bottom: 56.25%;
+}
+.embed-responsive-4by3 {
+  padding-bottom: 75%;
+}
+.well {
+  min-height: 20px;
+  padding: 19px;
+  margin-bottom: 20px;
+  background-color: #f5f5f5;
+  border: 1px solid #e3e3e3;
+  border-radius: 4px;
+  -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .05);
+          box-shadow: inset 0 1px 1px rgba(0, 0, 0, .05);
+}
+.well blockquote {
+  border-color: #ddd;
+  border-color: rgba(0, 0, 0, .15);
+}
+.well-lg {
+  padding: 24px;
+  border-radius: 6px;
+}
+.well-sm {
+  padding: 9px;
+  border-radius: 3px;
+}
+.close {
+  float: right;
+  font-size: 21px;
+  font-weight: bold;
+  line-height: 1;
+  color: #000;
+  text-shadow: 0 1px 0 #fff;
+  filter: alpha(opacity=20);
+  opacity: .2;
+}
+.close:hover,
+.close:focus {
+  color: #000;
+  text-decoration: none;
+  cursor: pointer;
+  filter: alpha(opacity=50);
+  opacity: .5;
+}
+button.close {
+  -webkit-appearance: none;
+  padding: 0;
+  cursor: pointer;
+  background: transparent;
+  border: 0;
+}
+.modal-open {
+  overflow: hidden;
+}
+.modal {
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 1050;
+  display: none;
+  overflow: hidden;
+  -webkit-overflow-scrolling: touch;
+  outline: 0;
+}
+.modal.fade .modal-dialog {
+  -webkit-transition: -webkit-transform .3s ease-out;
+       -o-transition:      -o-transform .3s ease-out;
+          transition:         transform .3s ease-out;
+  -webkit-transform: translate(0, -25%);
+      -ms-transform: translate(0, -25%);
+       -o-transform: translate(0, -25%);
+          transform: translate(0, -25%);
+}
+.modal.in .modal-dialog {
+  -webkit-transform: translate(0, 0);
+      -ms-transform: translate(0, 0);
+       -o-transform: translate(0, 0);
+          transform: translate(0, 0);
+}
+.modal-open .modal {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+.modal-dialog {
+  position: relative;
+  width: auto;
+  margin: 10px;
+}
+.modal-content {
+  position: relative;
+  background-color: #fff;
+  -webkit-background-clip: padding-box;
+          background-clip: padding-box;
+  border: 1px solid #999;
+  border: 1px solid rgba(0, 0, 0, .2);
+  border-radius: 6px;
+  outline: 0;
+  -webkit-box-shadow: 0 3px 9px rgba(0, 0, 0, .5);
+          box-shadow: 0 3px 9px rgba(0, 0, 0, .5);
+}
+.modal-backdrop {
+  position: fixed;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  z-index: 1040;
+  background-color: #000;
+}
+.modal-backdrop.fade {
+  filter: alpha(opacity=0);
+  opacity: 0;
+}
+.modal-backdrop.in {
+  filter: alpha(opacity=50);
+  opacity: .5;
+}
+.modal-header {
+  padding: 15px;
+  border-bottom: 1px solid #e5e5e5;
+}
+.modal-header .close {
+  margin-top: -2px;
+}
+.modal-title {
+  margin: 0;
+  line-height: 1.42857143;
+}
+.modal-body {
+  position: relative;
+  padding: 15px;
+}
+.modal-footer {
+  padding: 15px;
+  text-align: right;
+  border-top: 1px solid #e5e5e5;
+}
+.modal-footer .btn + .btn {
+  margin-bottom: 0;
+  margin-left: 5px;
+}
+.modal-footer .btn-group .btn + .btn {
+  margin-left: -1px;
+}
+.modal-footer .btn-block + .btn-block {
+  margin-left: 0;
+}
+.modal-scrollbar-measure {
+  position: absolute;
+  top: -9999px;
+  width: 50px;
+  height: 50px;
+  overflow: scroll;
+}
+@media (min-width: 768px) {
+  .modal-dialog {
+    width: 600px;
+    margin: 30px auto;
+  }
+  .modal-content {
+    -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, .5);
+            box-shadow: 0 5px 15px rgba(0, 0, 0, .5);
+  }
+  .modal-sm {
+    width: 300px;
+  }
+}
+@media (min-width: 992px) {
+  .modal-lg {
+    width: 900px;
+  }
+}
+.tooltip {
+  position: absolute;
+  z-index: 1070;
+  display: block;
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: 12px;
+  font-style: normal;
+  font-weight: normal;
+  line-height: 1.42857143;
+  text-align: left;
+  text-align: start;
+  text-decoration: none;
+  text-shadow: none;
+  text-transform: none;
+  letter-spacing: normal;
+  word-break: normal;
+  word-spacing: normal;
+  word-wrap: normal;
+  white-space: normal;
+  filter: alpha(opacity=0);
+  opacity: 0;
+
+  line-break: auto;
+}
+.tooltip.in {
+  filter: alpha(opacity=90);
+  opacity: .9;
+}
+.tooltip.top {
+  padding: 5px 0;
+  margin-top: -3px;
+}
+.tooltip.right {
+  padding: 0 5px;
+  margin-left: 3px;
+}
+.tooltip.bottom {
+  padding: 5px 0;
+  margin-top: 3px;
+}
+.tooltip.left {
+  padding: 0 5px;
+  margin-left: -3px;
+}
+.tooltip-inner {
+  max-width: 200px;
+  padding: 3px 8px;
+  color: #fff;
+  text-align: center;
+  background-color: #000;
+  border-radius: 4px;
+}
+.tooltip-arrow {
+  position: absolute;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+.tooltip.top .tooltip-arrow {
+  bottom: 0;
+  left: 50%;
+  margin-left: -5px;
+  border-width: 5px 5px 0;
+  border-top-color: #000;
+}
+.tooltip.top-left .tooltip-arrow {
+  right: 5px;
+  bottom: 0;
+  margin-bottom: -5px;
+  border-width: 5px 5px 0;
+  border-top-color: #000;
+}
+.tooltip.top-right .tooltip-arrow {
+  bottom: 0;
+  left: 5px;
+  margin-bottom: -5px;
+  border-width: 5px 5px 0;
+  border-top-color: #000;
+}
+.tooltip.right .tooltip-arrow {
+  top: 50%;
+  left: 0;
+  margin-top: -5px;
+  border-width: 5px 5px 5px 0;
+  border-right-color: #000;
+}
+.tooltip.left .tooltip-arrow {
+  top: 50%;
+  right: 0;
+  margin-top: -5px;
+  border-width: 5px 0 5px 5px;
+  border-left-color: #000;
+}
+.tooltip.bottom .tooltip-arrow {
+  top: 0;
+  left: 50%;
+  margin-left: -5px;
+  border-width: 0 5px 5px;
+  border-bottom-color: #000;
+}
+.tooltip.bottom-left .tooltip-arrow {
+  top: 0;
+  right: 5px;
+  margin-top: -5px;
+  border-width: 0 5px 5px;
+  border-bottom-color: #000;
+}
+.tooltip.bottom-right .tooltip-arrow {
+  top: 0;
+  left: 5px;
+  margin-top: -5px;
+  border-width: 0 5px 5px;
+  border-bottom-color: #000;
+}
+.popover {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: 1060;
+  display: none;
+  max-width: 276px;
+  padding: 1px;
+  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
+  font-size: 14px;
+  font-style: normal;
+  font-weight: normal;
+  line-height: 1.42857143;
+  text-align: left;
+  text-align: start;
+  text-decoration: none;
+  text-shadow: none;
+  text-transform: none;
+  letter-spacing: normal;
+  word-break: normal;
+  word-spacing: normal;
+  word-wrap: normal;
+  white-space: normal;
+  background-color: #fff;
+  -webkit-background-clip: padding-box;
+          background-clip: padding-box;
+  border: 1px solid #ccc;
+  border: 1px solid rgba(0, 0, 0, .2);
+  border-radius: 6px;
+  -webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
+          box-shadow: 0 5px 10px rgba(0, 0, 0, .2);
+
+  line-break: auto;
+}
+.popover.top {
+  margin-top: -10px;
+}
+.popover.right {
+  margin-left: 10px;
+}
+.popover.bottom {
+  margin-top: 10px;
+}
+.popover.left {
+  margin-left: -10px;
+}
+.popover-title {
+  padding: 8px 14px;
+  margin: 0;
+  font-size: 14px;
+  background-color: #f7f7f7;
+  border-bottom: 1px solid #ebebeb;
+  border-radius: 5px 5px 0 0;
+}
+.popover-content {
+  padding: 9px 14px;
+}
+.popover > .arrow,
+.popover > .arrow:after {
+  position: absolute;
+  display: block;
+  width: 0;
+  height: 0;
+  border-color: transparent;
+  border-style: solid;
+}
+.popover > .arrow {
+  border-width: 11px;
+}
+.popover > .arrow:after {
+  content: "";
+  border-width: 10px;
+}
+.popover.top > .arrow {
+  bottom: -11px;
+  left: 50%;
+  margin-left: -11px;
+  border-top-color: #999;
+  border-top-color: rgba(0, 0, 0, .25);
+  border-bottom-width: 0;
+}
+.popover.top > .arrow:after {
+  bottom: 1px;
+  margin-left: -10px;
+  content: " ";
+  border-top-color: #fff;
+  border-bottom-width: 0;
+}
+.popover.right > .arrow {
+  top: 50%;
+  left: -11px;
+  margin-top: -11px;
+  border-right-color: #999;
+  border-right-color: rgba(0, 0, 0, .25);
+  border-left-width: 0;
+}
+.popover.right > .arrow:after {
+  bottom: -10px;
+  left: 1px;
+  content: " ";
+  border-right-color: #fff;
+  border-left-width: 0;
+}
+.popover.bottom > .arrow {
+  top: -11px;
+  left: 50%;
+  margin-left: -11px;
+  border-top-width: 0;
+  border-bottom-color: #999;
+  border-bottom-color: rgba(0, 0, 0, .25);
+}
+.popover.bottom > .arrow:after {
+  top: 1px;
+  margin-left: -10px;
+  content: " ";
+  border-top-width: 0;
+  border-bottom-color: #fff;
+}
+.popover.left > .arrow {
+  top: 50%;
+  right: -11px;
+  margin-top: -11px;
+  border-right-width: 0;
+  border-left-color: #999;
+  border-left-color: rgba(0, 0, 0, .25);
+}
+.popover.left > .arrow:after {
+  right: 1px;
+  bottom: -10px;
+  content: " ";
+  border-right-width: 0;
+  border-left-color: #fff;
+}
+.carousel {
+  position: relative;
+}
+.carousel-inner {
+  position: relative;
+  width: 100%;
+  overflow: hidden;
+}
+.carousel-inner > .item {
+  position: relative;
+  display: none;
+  -webkit-transition: .6s ease-in-out left;
+       -o-transition: .6s ease-in-out left;
+          transition: .6s ease-in-out left;
+}
+.carousel-inner > .item > img,
+.carousel-inner > .item > a > img {
+  line-height: 1;
+}
+@media all and (transform-3d), (-webkit-transform-3d) {
+  .carousel-inner > .item {
+    -webkit-transition: -webkit-transform .6s ease-in-out;
+         -o-transition:      -o-transform .6s ease-in-out;
+            transition:         transform .6s ease-in-out;
+
+    -webkit-backface-visibility: hidden;
+            backface-visibility: hidden;
+    -webkit-perspective: 1000px;
+            perspective: 1000px;
+  }
+  .carousel-inner > .item.next,
+  .carousel-inner > .item.active.right {
+    left: 0;
+    -webkit-transform: translate3d(100%, 0, 0);
+            transform: translate3d(100%, 0, 0);
+  }
+  .carousel-inner > .item.prev,
+  .carousel-inner > .item.active.left {
+    left: 0;
+    -webkit-transform: translate3d(-100%, 0, 0);
+            transform: translate3d(-100%, 0, 0);
+  }
+  .carousel-inner > .item.next.left,
+  .carousel-inner > .item.prev.right,
+  .carousel-inner > .item.active {
+    left: 0;
+    -webkit-transform: translate3d(0, 0, 0);
+            transform: translate3d(0, 0, 0);
+  }
+}
+.carousel-inner > .active,
+.carousel-inner > .next,
+.carousel-inner > .prev {
+  display: block;
+}
+.carousel-inner > .active {
+  left: 0;
+}
+.carousel-inner > .next,
+.carousel-inner > .prev {
+  position: absolute;
+  top: 0;
+  width: 100%;
+}
+.carousel-inner > .next {
+  left: 100%;
+}
+.carousel-inner > .prev {
+  left: -100%;
+}
+.carousel-inner > .next.left,
+.carousel-inner > .prev.right {
+  left: 0;
+}
+.carousel-inner > .active.left {
+  left: -100%;
+}
+.carousel-inner > .active.right {
+  left: 100%;
+}
+.carousel-control {
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: 15%;
+  font-size: 20px;
+  color: #fff;
+  text-align: center;
+  text-shadow: 0 1px 2px rgba(0, 0, 0, .6);
+  background-color: rgba(0, 0, 0, 0);
+  filter: alpha(opacity=50);
+  opacity: .5;
+}
+.carousel-control.left {
+  background-image: -webkit-linear-gradient(left, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .0001) 100%);
+  background-image:      -o-linear-gradient(left, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .0001) 100%);
+  background-image: -webkit-gradient(linear, left top, right top, from(rgba(0, 0, 0, .5)), to(rgba(0, 0, 0, .0001)));
+  background-image:         linear-gradient(to right, rgba(0, 0, 0, .5) 0%, rgba(0, 0, 0, .0001) 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#80000000', endColorstr='#00000000', GradientType=1);
+  background-repeat: repeat-x;
+}
+.carousel-control.right {
+  right: 0;
+  left: auto;
+  background-image: -webkit-linear-gradient(left, rgba(0, 0, 0, .0001) 0%, rgba(0, 0, 0, .5) 100%);
+  background-image:      -o-linear-gradient(left, rgba(0, 0, 0, .0001) 0%, rgba(0, 0, 0, .5) 100%);
+  background-image: -webkit-gradient(linear, left top, right top, from(rgba(0, 0, 0, .0001)), to(rgba(0, 0, 0, .5)));
+  background-image:         linear-gradient(to right, rgba(0, 0, 0, .0001) 0%, rgba(0, 0, 0, .5) 100%);
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00000000', endColorstr='#80000000', GradientType=1);
+  background-repeat: repeat-x;
+}
+.carousel-control:hover,
+.carousel-control:focus {
+  color: #fff;
+  text-decoration: none;
+  filter: alpha(opacity=90);
+  outline: 0;
+  opacity: .9;
+}
+.carousel-control .icon-prev,
+.carousel-control .icon-next,
+.carousel-control .glyphicon-chevron-left,
+.carousel-control .glyphicon-chevron-right {
+  position: absolute;
+  top: 50%;
+  z-index: 5;
+  display: inline-block;
+  margin-top: -10px;
+}
+.carousel-control .icon-prev,
+.carousel-control .glyphicon-chevron-left {
+  left: 50%;
+  margin-left: -10px;
+}
+.carousel-control .icon-next,
+.carousel-control .glyphicon-chevron-right {
+  right: 50%;
+  margin-right: -10px;
+}
+.carousel-control .icon-prev,
+.carousel-control .icon-next {
+  width: 20px;
+  height: 20px;
+  font-family: serif;
+  line-height: 1;
+}
+.carousel-control .icon-prev:before {
+  content: '\2039';
+}
+.carousel-control .icon-next:before {
+  content: '\203a';
+}
+.carousel-indicators {
+  position: absolute;
+  bottom: 10px;
+  left: 50%;
+  z-index: 15;
+  width: 60%;
+  padding-left: 0;
+  margin-left: -30%;
+  text-align: center;
+  list-style: none;
+}
+.carousel-indicators li {
+  display: inline-block;
+  width: 10px;
+  height: 10px;
+  margin: 1px;
+  text-indent: -999px;
+  cursor: pointer;
+  background-color: #000 \9;
+  background-color: rgba(0, 0, 0, 0);
+  border: 1px solid #fff;
+  border-radius: 10px;
+}
+.carousel-indicators .active {
+  width: 12px;
+  height: 12px;
+  margin: 0;
+  background-color: #fff;
+}
+.carousel-caption {
+  position: absolute;
+  right: 15%;
+  bottom: 20px;
+  left: 15%;
+  z-index: 10;
+  padding-top: 20px;
+  padding-bottom: 20px;
+  color: #fff;
+  text-align: center;
+  text-shadow: 0 1px 2px rgba(0, 0, 0, .6);
+}
+.carousel-caption .btn {
+  text-shadow: none;
+}
+@media screen and (min-width: 768px) {
+  .carousel-control .glyphicon-chevron-left,
+  .carousel-control .glyphicon-chevron-right,
+  .carousel-control .icon-prev,
+  .carousel-control .icon-next {
+    width: 30px;
+    height: 30px;
+    margin-top: -10px;
+    font-size: 30px;
+  }
+  .carousel-control .glyphicon-chevron-left,
+  .carousel-control .icon-prev {
+    margin-left: -10px;
+  }
+  .carousel-control .glyphicon-chevron-right,
+  .carousel-control .icon-next {
+    margin-right: -10px;
+  }
+  .carousel-caption {
+    right: 20%;
+    left: 20%;
+    padding-bottom: 30px;
+  }
+  .carousel-indicators {
+    bottom: 20px;
+  }
+}
+.clearfix:before,
+.clearfix:after,
+.dl-horizontal dd:before,
+.dl-horizontal dd:after,
+.container:before,
+.container:after,
+.container-fluid:before,
+.container-fluid:after,
+.row:before,
+.row:after,
+.form-horizontal .form-group:before,
+.form-horizontal .form-group:after,
+.btn-toolbar:before,
+.btn-toolbar:after,
+.btn-group-vertical > .btn-group:before,
+.btn-group-vertical > .btn-group:after,
+.nav:before,
+.nav:after,
+.navbar:before,
+.navbar:after,
+.navbar-header:before,
+.navbar-header:after,
+.navbar-collapse:before,
+.navbar-collapse:after,
+.pager:before,
+.pager:after,
+.panel-body:before,
+.panel-body:after,
+.modal-header:before,
+.modal-header:after,
+.modal-footer:before,
+.modal-footer:after {
+  display: table;
+  content: " ";
+}
+.clearfix:after,
+.dl-horizontal dd:after,
+.container:after,
+.container-fluid:after,
+.row:after,
+.form-horizontal .form-group:after,
+.btn-toolbar:after,
+.btn-group-vertical > .btn-group:after,
+.nav:after,
+.navbar:after,
+.navbar-header:after,
+.navbar-collapse:after,
+.pager:after,
+.panel-body:after,
+.modal-header:after,
+.modal-footer:after {
+  clear: both;
+}
+.center-block {
+  display: block;
+  margin-right: auto;
+  margin-left: auto;
+}
+.pull-right {
+  float: right !important;
+}
+.pull-left {
+  float: left !important;
+}
+.hide {
+  display: none !important;
+}
+.show {
+  display: block !important;
+}
+.invisible {
+  visibility: hidden;
+}
+.text-hide {
+  font: 0/0 a;
+  color: transparent;
+  text-shadow: none;
+  background-color: transparent;
+  border: 0;
+}
+.hidden {
+  display: none !important;
+}
+.affix {
+  position: fixed;
+}
+@-ms-viewport {
+  width: device-width;
+}
+.visible-xs,
+.visible-sm,
+.visible-md,
+.visible-lg {
+  display: none !important;
+}
+.visible-xs-block,
+.visible-xs-inline,
+.visible-xs-inline-block,
+.visible-sm-block,
+.visible-sm-inline,
+.visible-sm-inline-block,
+.visible-md-block,
+.visible-md-inline,
+.visible-md-inline-block,
+.visible-lg-block,
+.visible-lg-inline,
+.visible-lg-inline-block {
+  display: none !important;
+}
+@media (max-width: 767px) {
+  .visible-xs {
+    display: block !important;
+  }
+  table.visible-xs {
+    display: table !important;
+  }
+  tr.visible-xs {
+    display: table-row !important;
+  }
+  th.visible-xs,
+  td.visible-xs {
+    display: table-cell !important;
+  }
+}
+@media (max-width: 767px) {
+  .visible-xs-block {
+    display: block !important;
+  }
+}
+@media (max-width: 767px) {
+  .visible-xs-inline {
+    display: inline !important;
+  }
+}
+@media (max-width: 767px) {
+  .visible-xs-inline-block {
+    display: inline-block !important;
+  }
+}
+@media (min-width: 768px) and (max-width: 991px) {
+  .visible-sm {
+    display: block !important;
+  }
+  table.visible-sm {
+    display: table !important;
+  }
+  tr.visible-sm {
+    display: table-row !important;
+  }
+  th.visible-sm,
+  td.visible-sm {
+    display: table-cell !important;
+  }
+}
+@media (min-width: 768px) and (max-width: 991px) {
+  .visible-sm-block {
+    display: block !important;
+  }
+}
+@media (min-width: 768px) and (max-width: 991px) {
+  .visible-sm-inline {
+    display: inline !important;
+  }
+}
+@media (min-width: 768px) and (max-width: 991px) {
+  .visible-sm-inline-block {
+    display: inline-block !important;
+  }
+}
+@media (min-width: 992px) and (max-width: 1199px) {
+  .visible-md {
+    display: block !important;
+  }
+  table.visible-md {
+    display: table !important;
+  }
+  tr.visible-md {
+    display: table-row !important;
+  }
+  th.visible-md,
+  td.visible-md {
+    display: table-cell !important;
+  }
+}
+@media (min-width: 992px) and (max-width: 1199px) {
+  .visible-md-block {
+    display: block !important;
+  }
+}
+@media (min-width: 992px) and (max-width: 1199px) {
+  .visible-md-inline {
+    display: inline !important;
+  }
+}
+@media (min-width: 992px) and (max-width: 1199px) {
+  .visible-md-inline-block {
+    display: inline-block !important;
+  }
+}
+@media (min-width: 1200px) {
+  .visible-lg {
+    display: block !important;
+  }
+  table.visible-lg {
+    display: table !important;
+  }
+  tr.visible-lg {
+    display: table-row !important;
+  }
+  th.visible-lg,
+  td.visible-lg {
+    display: table-cell !important;
+  }
+}
+@media (min-width: 1200px) {
+  .visible-lg-block {
+    display: block !important;
+  }
+}
+@media (min-width: 1200px) {
+  .visible-lg-inline {
+    display: inline !important;
+  }
+}
+@media (min-width: 1200px) {
+  .visible-lg-inline-block {
+    display: inline-block !important;
+  }
+}
+@media (max-width: 767px) {
+  .hidden-xs {
+    display: none !important;
+  }
+}
+@media (min-width: 768px) and (max-width: 991px) {
+  .hidden-sm {
+    display: none !important;
+  }
+}
+@media (min-width: 992px) and (max-width: 1199px) {
+  .hidden-md {
+    display: none !important;
+  }
+}
+@media (min-width: 1200px) {
+  .hidden-lg {
+    display: none !important;
+  }
+}
+.visible-print {
+  display: none !important;
+}
+@media print {
+  .visible-print {
+    display: block !important;
+  }
+  table.visible-print {
+    display: table !important;
+  }
+  tr.visible-print {
+    display: table-row !important;
+  }
+  th.visible-print,
+  td.visible-print {
+    display: table-cell !important;
+  }
+}
+.visible-print-block {
+  display: none !important;
+}
+@media print {
+  .visible-print-block {
+    display: block !important;
+  }
+}
+.visible-print-inline {
+  display: none !important;
+}
+@media print {
+  .visible-print-inline {
+    display: inline !important;
+  }
+}
+.visible-print-inline-block {
+  display: none !important;
+}
+@media print {
+  .visible-print-inline-block {
+    display: inline-block !important;
+  }
+}
+@media print {
+  .hidden-print {
+    display: none !important;
+  }
+}
+/*# sourceMappingURL=bootstrap.css.map */
+</style>
+        <style>body {
+    padding-bottom: 32px;
+}
+.form-control[readonly] {
+    cursor: text;
+}
+.feedback-container {
+    position: fixed;
+    top: 0;
+    width: 100%;
+    text-align: center;
+    z-index: 4;
+}
+.feedback {
+    display: table;
+    padding: 0.5em 1em;
+    background-color: orange;
+    margin: 0 auto;
+    font-size: 2em;
+    color: #444;
+    border: 2px solid #555;
+    border-top: 0;
+    border-bottom-left-radius: 20px 20px;
+    border-bottom-right-radius: 20px 20px;
+}
+.no-border {
+    border: 0;
+    box-shadow: inset 0 1px 1px rgba(0,0,0,.0);
+    -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.0);
+}
+.phrase {
+    word-break: keep-all;
+}
+.generate-container .strength {
+    /* override mobile width from bootstrap */
+    width: auto!important;
+    display: inline-block;
+}
+.languages a {
+    padding-left: 10px;
+}
+.languages a:nth-of-type(1) {
+    margin-left: -12px;
+    padding-left: 0;
+}
+.monospace {
+    font-family: monospace;
+}
+.entropy-container .filtered,
+.entropy-container .binary {
+    word-wrap: break-word;
+}
+.entropy-container li {
+    padding-bottom: 5px;
+}
+.card-suit {
+    font-size: 19px;
+    line-height: 0;
+}
+.card-suit.club {
+    color: #009F00;
+}
+.card-suit.diamond {
+    color: #3D5DC4;
+}
+.card-suit.heart {
+    color: #F00;
+}
+.card-suit.spade {
+    color: #000;
+}
+.qr-container {
+    position: fixed;
+    top: 0;
+    right: 0;
+    text-align: center;
+    background-color: #FFF;
+    border: 1px solid #CCC;
+}
+.qr-image {
+    margin: 5px;
+}
+.qr-hint,
+.qr-warning {
+    padding: 2px;
+    max-width: 320px;
+}
+.more-info {
+    cursor: help;
+    border-bottom: 1px dashed #000;
+    text-decoration: none;
+}
+.version {
+    position: absolute;
+    top: 5px;
+    right: 5px;
+}
+.csv {
+    margin-top: 20px;
+    margin-bottom: 20px;
+    white-space: pre;
+    overflow-wrap: normal;
+    overflow-x: scroll;
+    font-family: monospace;
+}
+</style>
+        <meta content="Mnemonic code for generating deterministic keys" name="description"/>
+        <meta content="width=device-width, initial-scale=1.0" name="viewport" />
+        <meta content="bitcoin mnemonic converter" name="description" />
+        <meta content="Ian Coleman" name="author" />
+        <link type="image/x-icon" rel="icon" href="data:image/x-icon;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQEAYAAABPYyMiAAAABmJLR0T///////8JWPfcAAAACXBIWXMAAABIAAAASABGyWs+AAAAF0lEQVRIx2NgGAWjYBSMglEwCkbBSAcACBAAAeaR9cIAAAAASUVORK5CYII=" />
+    </head>
+    <body>
+        <div class="container">
+
+            <h1 class="text-center">Mnemonic Code Converter</h1>
+            <p class="version">v0.3.2</p>
+            <hr>
+            <div class="row">
+                <div class="col-md-12">
+                    <h2>Mnemonic</h2>
+                    <form class="form-horizontal" role="form">
+                        <div class="form-group">
+                            <div class="col-sm-2"></div>
+                            <div class="col-sm-10">
+                                <p>You can enter an existing BIP39 mnemonic, or generate a new random one. Typing your own twelve words will probably not work how you expect, since the words require a particular structure (the last word is a checksum).</p>
+                                <p>
+                                    For more info see the
+                                    <a href="https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki" target="_blank">BIP39 spec</a>.
+                                </p>
+                            </div>
+                        </div>
+                        <div class="form-group generate-container">
+                            <label class="col-sm-2 control-label"></label>
+                            <div class="col-sm-10">
+                                <div class="form-inline">
+                                    <div class="input-group-inline">
+                                        <span>Generate a random mnemonic, or enter your own below</span>:
+                                        <button class="btn generate">Generate</button>
+                                        <select id="strength" class="strength form-control">
+                                            <option value="3">3</option>
+                                            <option value="6">6</option>
+                                            <option value="9">9</option>
+                                            <option value="12">12</option>
+                                            <option value="15" selected>15</option>
+                                            <option value="18">18</option>
+                                            <option value="21">21</option>
+                                            <option value="24">24</option>
+                                        </select>
+                                        <span>words</span>
+                                    </div>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="entropy-container hidden">
+                            <div class="form-group text-danger">
+                                <label class="col-sm-2 control-label">Warning</label>
+                                <div class="col-sm-10 form-control-static">
+                                    <span>Entropy is an advanced feature. Your mnemonic may be insecure if this feature is used incorrectly.</span>
+                                    <a href="#entropy-notes">Read more</a>
+                                </div>
+                            </div>
+                            <div class="form-group">
+                                <label for="entropy" class="col-sm-2 control-label">Entropy</label>
+                                <div class="col-sm-7">
+                                    <textarea id="entropy" rows="2" class="entropy form-control" placeholder="Accepts either binary, base 6, 6-sided dice, base 10, hexadecimal or cards"></textarea>
+                                    <div class="row filter-warning text-danger hidden">
+                                        <p class="col-sm-12">
+                                        <strong>
+                                        Some characters have been discarded
+                                        </strong>
+                                        </p>
+                                    </div>
+                                    <div class="row">
+                                        <label class="col-sm-3 control-label"><span class="more-info" title="Based on estimates from zxcvbn using Filtered Entropy">Time To Crack</span></label>
+                                        <div class="crack-time col-sm-3 form-control-static"></div>
+                                        <label class="col-sm-3 control-label">Event Count</label>
+                                        <div class="event-count col-sm-3 form-control-static"></div>
+                                    </div>
+                                    <div class="row">
+                                        <label class="col-sm-3 control-label">Entropy Type</label>
+                                        <div class="type col-sm-3 form-control-static"></div>
+                                        <label class="col-sm-3 control-label">Bits Per Event</label>
+                                        <div class="bits-per-event col-sm-3 form-control-static"></div>
+                                    </div>
+                                    <div class="row">
+                                        <label class="col-sm-3 control-label">Raw Entropy Words</label>
+                                        <div class="word-count col-sm-3 form-control-static"></div>
+                                        <label class="col-sm-3 control-label"><span class="more-info" title="Total bits of entropy may be less than indicated if any entropy event uses a weak source.">Total Bits</span></label>
+                                        <div class="bits col-sm-3 form-control-static"></div>
+                                    </div>
+                                    <label class="col-sm-3 control-label">Filtered Entropy</label>
+                                    <div class="filtered col-sm-9 form-control-static"></div>
+                                    <label class="col-sm-3 control-label">Raw Binary</label>
+                                    <div class="binary col-sm-9 form-control-static"></div>
+                                    <label class="col-sm-3 control-label">Word Indexes</label>
+                                    <div class="word-indexes col-sm-9 form-control-static">&nbsp;</div>
+                                    <label class="col-sm-3 control-label">Mnemonic Length</label>
+                                    <div class="col-sm-9">
+                                        <select class="mnemonic-length form-control">
+                                            <option value="raw" selected>Use Raw Entropy (3 words per 32 bits)</option>
+                                            <option value="12">12 <span>Words</span></option>
+                                            <option value="15">15 <span>Words</option>
+                                            <option value="18">18 <span>Words</span></option>
+                                            <option value="21">21 <span>Words</span></option>
+                                            <option value="24">24 <span>Words</span></option>
+                                        </select>
+                                    </div>
+                                </div>
+                                <div class="col-sm-3">
+                                    <p>Valid entropy values include:</p>
+                                    <ul>
+                                        <li><strong>Binary</strong> [0-1]<br>101010011</li>
+                                        <li><strong>Base 6</strong> [0-5]<br>123434014</li>
+                                        <li><strong>Dice</strong> [1-6]<br>62535634</li>
+                                        <li><strong>Base 10</strong> [0-9]<br>90834528</li>
+                                        <li><strong>Hex</strong> [0-9A-F]<br>4187a8bfd9</li>
+                                        <li><strong>Card</strong> [A2-9TJQK][CDHS]<br>ahqs9dtc</li>
+                                    </ul>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <div class="col-sm-2"></div>
+                            <div class="col-sm-10 checkbox">
+                                <label>
+                                    <input type="checkbox" class="use-entropy">
+                                    <span>Show entropy details</span>
+                                </label>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label class="col-sm-2 control-label">Mnemonic Language</label>
+                            <div class="col-sm-10 languages">
+                                <div class="form-control no-border">
+                                    <a href="#english">English</a>
+                                    <a href="#japanese" title="Japanese">日本語</a>
+                                    <a href="#spanish"  title="Spanish">Español</a>
+                                    <a href="#chinese_simplified"  title="Chinese (Simplified)">中文(简体)</a>
+                                    <a href="#chinese_traditional"  title="Chinese (Traditional)">中文(繁體)</a>
+                                    <a href="#french"  title="French">Français</a>
+                                    <a href="#italian"  title="Italian">Italiano</a>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="phrase" class="col-sm-2 control-label">BIP39 Mnemonic</label>
+                            <div class="col-sm-10">
+                                <textarea id="phrase" class="phrase form-control" data-show-qr></textarea>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="passphrase" class="col-sm-2 control-label">BIP39 Passphrase (optional)</label>
+                            <div class="col-sm-10">
+                                <textarea id="passphrase" class="passphrase form-control"></textarea>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="seed" class="col-sm-2 control-label">BIP39 Seed</label>
+                            <div class="col-sm-10">
+                                <textarea id="seed" class="seed form-control" readonly="readonly" data-show-qr></textarea>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="network-phrase" class="col-sm-2 control-label">Coin</label>
+                            <div class="col-sm-10">
+                                <select id="network-phrase" class="network form-control">
+                                    <!-- populated by javascript -->
+                                </select>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="root-key" class="col-sm-2 control-label">BIP32 Root Key</label>
+                            <div class="col-sm-10">
+                                <textarea id="root-key" class="root-key form-control" data-show-qr></textarea>
+                            </div>
+                        </div>
+                        <div class="form-group litecoin-ltub-container hidden">
+                            <label for="litecoin-use-ltub" class="col-sm-2 control-label">Prefixes</label>
+                            <div class="col-sm-10 checkbox">
+                                <label>
+                                    <input type="checkbox" id="litecoin-use-ltub" class="litecoin-use-ltub" checked="checked">
+                                    Use <code>Ltpv / Ltub</code> instead of <code>xprv / xpub</code>
+                                </label>
+                            </div>
+                        </div>
+                    </form>
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+                    <h2>Derivation Path</h2>
+                    <ul class="derivation-type nav nav-tabs" role="tablist">
+                        <li id="bip32-tab">
+                            <a href="#bip32" role="tab" data-toggle="tab">BIP32</a>
+                        </li>
+                        <li id="bip44-tab" class="active">
+                            <a href="#bip44" role="tab" data-toggle="tab">BIP44</a>
+                        </li>
+                        <li id="bip49-tab">
+                            <a href="#bip49" role="tab" data-toggle="tab">BIP49</a>
+                        </li>
+                        <li id="bip84-tab">
+                            <a href="#bip84" role="tab" data-toggle="tab">BIP84</a>
+                        </li>
+                        <li id="bip141-tab">
+                            <a href="#bip141" role="tab" data-toggle="tab">BIP141</a>
+                        </li>
+                    </ul>
+                    <div class="derivation-type tab-content">
+                        <div id="bip44" class="tab-pane active">
+                            <form class="form-horizontal" role="form">
+                                <br>
+                                <div class="col-sm-2"></div>
+                                <div class="col-sm-10">
+                                    <p>
+                                        For more info see the
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki" target="_blank">BIP44 spec</a>.
+                                    </p>
+                                </div>
+                                <div class="form-group">
+                                    <label for="purpose" class="col-sm-2 control-label">
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#purpose" target="_blank">Purpose</a>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="purpose" type="text" class="purpose form-control" value="44" readonly>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="coin" class="col-sm-2 control-label">
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#registered-coin-types" target="_blank">Coin</a>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="coin" type="text" class="coin form-control" value="0" readonly>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="account" class="col-sm-2 control-label">
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#account" target="_blank">Account</a>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="account" type="text" class="account form-control" value="0">
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="change" class="col-sm-2 control-label">
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#change" target="_blank">External / Internal</a>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="change" type="text" class="change form-control" value="0">
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label class="col-sm-2 control-label">
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <p>The account extended keys can be used for importing to most BIP44 compatible wallets, such as mycelium or electrum.</p>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="account-xprv" class="col-sm-2 control-label">
+                                        <span>Account Extended Private Key</span>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <textarea id="account-xprv" type="text" class="account-xprv form-control" readonly data-show-qr></textarea>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="account-xpub" class="col-sm-2 control-label">
+                                        <span>Account Extended Public Key</span>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <textarea id="account-xpub" type="text" class="account-xpub form-control" readonly data-show-qr></textarea>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label class="col-sm-2 control-label">
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <p>The BIP32 derivation path and extended keys are the basis for the derived addresses.</p>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="bip44-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
+                                    <div class="col-sm-10">
+                                        <input id="bip44-path" type="text" class="path form-control" value="m/44'/0'/0'/0" readonly="readonly">
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                        <div id="bip32" class="tab-pane">
+                            <form class="form-horizontal" role="form">
+                                <br>
+                                <div class="col-sm-2"></div>
+                                <div class="col-sm-10">
+                                    <p>
+                                        For more info see the
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki" target="_blank">BIP32 spec</a>
+                                    </p>
+                                </div>
+                                <div class="form-group">
+                                    <label for="bip32-client" class="col-sm-2 control-label">Client</label>
+                                    <div class="col-sm-10">
+                                        <select id="bip32-client" class="client form-control">
+                                            <option value="custom">Custom derivation path</option>
+                                            <!-- populated by javascript -->
+                                        </select>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="bip32-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
+                                    <div class="col-sm-10">
+                                        <input id="bip32-path" type="text" class="path form-control" value="m/0">
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <div class="col-sm-2"></div>
+                                    <label class="col-sm-10">
+                                        <input class="hardened-addresses" type="checkbox">
+                                        <span>Use hardened addresses</span>
+                                    </label>
+                                </div>
+                                <div class="form-group">
+                                    <label for="core-path" class="col-sm-2 control-label">Bitcoin Core</label>
+                                    <div class="col-sm-10">
+                                        <p class="form-control no-border">
+                                        Use path <code>m/0'/0'</code> with hardened addresses.
+                                        </p>
+                                        <p class="form-control no-border">
+                                            For more info see the
+                                            <a href="https://github.com/bitcoin/bitcoin/pull/8035" target="_blank">Bitcoin Core BIP32 implementation</a>
+                                        </p>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="core-path" class="col-sm-2 control-label">Multibit</label>
+                                    <div class="col-sm-10">
+                                        <p class="form-control no-border">
+                                            <span>Use path <code>m/0'/0</code>.</span>
+                                        </p>
+                                        <p class="form-control no-border">
+                                            <span>For more info see</span>
+                                            <a href="https://multibit.org/" target="_blank">MultiBit HD</a>
+                                        </p>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label class="col-sm-2 control-label">Block Explorers</label>
+                                    <div class="col-sm-10">
+                                        <p class="form-control no-border">
+                                            <span>Use path <code>m/44'/0'/0'</code>.</span>
+                                            <span>Only enter the <code>xpub</code> extended key into block explorer search fields, never the <code>xprv</code> key.</span>
+                                        </p>
+                                        <p class="form-control no-border">
+                                            <span>Can be used with</span>:
+                                            <a href="https://blockchain.info/" target="_blank">blockchain.info</a>
+                                        </p>
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                        <div id="bip49" class="tab-pane">
+                            <form class="form-horizontal" role="form">
+                                <br>
+                                <div class="unavailable hidden">
+                                    <div class="form-group">
+                                        <div class="col-sm-2"></div>
+                                        <div class="col-sm-10">
+                                            <p>BIP49 is unavailable for this coin.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                                <div class="available">
+                                    <div class="col-sm-2"></div>
+                                    <div class="col-sm-10">
+                                        <p>
+                                            For more info see the
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki" target="_blank">BIP49 spec</a>.
+                                        </p>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="purpose" class="col-sm-2 control-label">
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#purpose" target="_blank">Purpose</a>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <input id="purpose" type="text" class="purpose form-control" value="49" readonly>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="coin" class="col-sm-2 control-label">
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#registered-coin-types" target="_blank">Coin</a>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <input id="coin" type="text" class="coin form-control" value="0" readonly>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="account" class="col-sm-2 control-label">
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#account" target="_blank">Account</a>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <input id="account" type="text" class="account form-control" value="0">
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="change" class="col-sm-2 control-label">
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki#change" target="_blank">External / Internal</a>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <input id="change" type="text" class="change form-control" value="0">
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label class="col-sm-2 control-label">
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <p>The account extended keys can be used for importing to most BIP49 compatible wallets.</p>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="account-xprv" class="col-sm-2 control-label">
+                                            <span>Account Extended Private Key</span>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <textarea id="account-xprv" type="text" class="account-xprv form-control" readonly data-show-qr></textarea>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="account-xpub" class="col-sm-2 control-label">
+                                            <span>Account Extended Public Key</span>
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <textarea id="account-xpub" type="text" class="account-xpub form-control" readonly data-show-qr></textarea>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label class="col-sm-2 control-label">
+                                        </label>
+                                        <div class="col-sm-10">
+                                            <p>The BIP32 derivation path and extended keys are the basis for the derived addresses.</p>
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="bip49-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
+                                        <div class="col-sm-10">
+                                            <input id="bip49-path" type="text" class="path form-control" value="m/49'/0'/0'/0" readonly="readonly">
+                                        </div>
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                        <div id="bip141" class="tab-pane">
+                            <form class="form-horizontal" role="form">
+                                <br>
+                                <div class="unavailable hidden">
+                                    <div class="form-group">
+                                        <div class="col-sm-2"></div>
+                                        <div class="col-sm-10">
+                                            <p>BIP141 is unavailable for this coin.</p>
+                                        </div>
+                                    </div>
+                                </div>
+                                <div class="available">
+                                    <div class="col-sm-2"></div>
+                                    <div class="col-sm-10">
+                                        <p>
+                                            For more info see the
+                                            <a href="https://github.com/bitcoin/bips/blob/master/bip-0141.mediawiki" target="_blank">BIP141 spec</a>
+                                        </p>
+                                    </div>
+                                    <div class="form-group">
+                                        <label for="bip141-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
+                                        <div class="col-sm-10">
+                                            <input id="bip141-path" type="text" class="bip141-path form-control" value="m/0">
+                                        </div>
+                                    </div>
+                                    <div class="form-group">
+                                        <label class="col-sm-2 control-label">Script Semantics</label>
+                                        <div class="col-sm-10">
+                                            <select class="form-control bip141-semantics">
+                                                <option value="p2wpkh">P2WPKH</option>
+                                                <option value="p2wpkh-p2sh" selected>P2WPKH nested in P2SH</option>
+                                            </select>
+                                        </div>
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                        <div id="bip84" class="tab-pane">
+                            <form class="form-horizontal" role="form">
+                                <br>
+                                <div class="col-sm-2"></div>
+                                <div class="col-sm-10">
+                                    <p>
+                                        For more info see the
+                                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0084.mediawiki" target="_blank">BIP84 spec</a>.
+                                    </p>
+                                </div>
+                                <div class="form-group">
+                                    <label for="purpose" class="col-sm-2 control-label">
+                                        Purpose
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="purpose" type="text" class="purpose form-control" value="84" readonly>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="coin" class="col-sm-2 control-label">
+                                        Coin
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="coin" type="text" class="coin form-control" value="0" readonly>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="account" class="col-sm-2 control-label">
+                                        Account
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="account" type="text" class="account form-control" value="0">
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="change" class="col-sm-2 control-label">
+                                        External / Internal
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <input id="change" type="text" class="change form-control" value="0">
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label class="col-sm-2 control-label">
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <p>The account extended keys can be used for importing to most BIP84 compatible wallets.</p>
+                                    </div>
+                                </div>
+                                <div class="form-group">
+                                    <label for="account-xprv" class="col-sm-2 control-label">
+                                        <span>Account Extended Private Key</span>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <textarea id="account-xprv" type="text" class="account-xprv form-control" readonly data-show-qr></textarea>
+                                    </div>
                                 </div>
-                            </th>
-                            <th>
-                                <div class="input-group">
-                                    <span>Address</span>&nbsp;&nbsp;
-                                    <button class="address-toggle">Toggle</button>
+                                <div class="form-group">
+                                    <label for="account-xpub" class="col-sm-2 control-label">
+                                        <span>Account Extended Public Key</span>
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <textarea id="account-xpub" type="text" class="account-xpub form-control" readonly data-show-qr></textarea>
+                                    </div>
                                 </div>
-                            </th>
-                            <th>
-                                <div class="input-group">
-                                    <span>Public Key</span>&nbsp;&nbsp;
-                                    <button class="public-key-toggle">Toggle</button>
+                                <div class="form-group">
+                                    <label class="col-sm-2 control-label">
+                                    </label>
+                                    <div class="col-sm-10">
+                                        <p>The BIP32 derivation path and extended keys are the basis for the derived addresses.</p>
+                                    </div>
                                 </div>
-                            </th>
-                            <th>
-                                <div class="input-group">
-                                    <span>Private Key</span>&nbsp;&nbsp;
-                                    <button class="private-key-toggle">Toggle</button>
+                                <div class="form-group">
+                                    <label for="bip84-path" class="col-sm-2 control-label">BIP32 Derivation Path</label>
+                                    <div class="col-sm-10">
+                                        <input id="bip84-path" type="text" class="path form-control" value="m/84'/0'/0'/0" readonly="readonly">
+                                    </div>
                                 </div>
-                            </th>
-                        </thead>
-                        <tbody class="addresses monospace">
-                            <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
-                            <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
-                            <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
-                            <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
-                            <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
-                        </tbody>
-                    </table>
+                            </form>
+                        </div>
+                    </div>
+                    <form class="form-horizontal" role="form">
+                        <div class="form-group">
+                            <label for="extended-priv-key" class="col-sm-2 control-label">BIP32 Extended Private Key</label>
+                            <div class="col-sm-10">
+                                <textarea id="extended-priv-key" class="extended-priv-key form-control" readonly="readonly" data-show-qr></textarea>
+                            </div>
+                        </div>
+                        <div class="form-group">
+                            <label for="extended-pub-key" class="col-sm-2 control-label">BIP32 Extended Public Key</label>
+                            <div class="col-sm-10">
+                                <textarea id="extended-pub-key" class="extended-pub-key form-control" readonly="readonly" data-show-qr></textarea>
+                            </div>
+                        </div>
+                    </form>
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+                    <h2>Derived Addresses</h2>
+                    <p>Note these addresses are derived from the BIP32 Extended Key</p>
+                </div>
+                <div class="col-md-12 use-bitpay-addresses-container hidden">
+                    <div class="checkbox">
+                        <label>
+                            <input type="checkbox" class="use-bitpay-addresses">
+                            <span>Use BitPay-style addresses for Bitcoin Cash (ie starting with 'C' instead of '1')</span>
+                        </label>
+                    </div>
+                </div>
+                <ul class="addresses-type nav nav-tabs" role="tablist">
+                    <li id="table-tab" class="active">
+                        <a href="#table" role="tab" data-toggle="tab">Table</a>
+                    </li>
+                    <li id="csv-tab">
+                        <a href="#csv" role="tab" data-toggle="tab">CSV</a>
+                    </li>
+                </ul>
+                <div class="addresses-type tab-content">
+                    <div id="table" class="tab-pane active">
+                        <div class="col-md-12">
+                            <table class="table table-striped">
+                                <thead>
+                                    <th>
+                                        <div class="input-group">
+                                            <span>Path</span>&nbsp;&nbsp;
+                                            <button class="index-toggle">Toggle</button>
+                                        </div>
+                                    </th>
+                                    <th>
+                                        <div class="input-group">
+                                            <span>Address</span>&nbsp;&nbsp;
+                                            <button class="address-toggle">Toggle</button>
+                                        </div>
+                                    </th>
+                                    <th>
+                                        <div class="input-group">
+                                            <span>Public Key</span>&nbsp;&nbsp;
+                                            <button class="public-key-toggle">Toggle</button>
+                                        </div>
+                                    </th>
+                                    <th>
+                                        <div class="input-group">
+                                            <span>Private Key</span>&nbsp;&nbsp;
+                                            <button class="private-key-toggle">Toggle</button>
+                                        </div>
+                                    </th>
+                                </thead>
+                                <tbody class="addresses monospace">
+                                    <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
+                                    <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
+                                    <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
+                                    <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
+                                    <tr><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td></tr>
+                                </tbody>
+                            </table>
+                        </div>
+                    </div>
+                    <div id="csv" class="tab-pane">
+                        <div class="col-md-12">
+                            <textarea class="csv form-control" rows="25" readonly></textarea>
+                        </div>
+                    </div>
+                </div>
+            </div>
+            <span>Show</span>
+            <input type="number" class="rows-to-add" value="20">
+            <button class="more">more rows</button>
+            <span>starting from index</span>
+            <input type="number" class="more-rows-start-index">
+            <span>(leave blank to generate from next index)</span>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+                    <h2>More info</h2>
+                    <h3>BIP39 <span class="small">Mnemonic code for generating deterministic keys</span></h3>
+                    <p>
+                        Read more at the
+                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki">official BIP39 spec</a>
+                    </p>
+                    <h3>BIP32 <span class="small">Hierarchical Deterministic Wallets</span></h3>
+                    <p>
+                        Read more at the
+                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki" target="_blank">official BIP32 spec</a>
+                    </p>
+                    <p>
+                        See the demo at
+                        <a href="http://bip32.org/" target="_blank">bip32.org</a>
+                    </p>
+                    <h3>BIP44 <span class="small">Multi-Account Hierarchy for Deterministic Wallets</span></h3>
+                    <p>
+                        Read more at the
+                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki" target="_blank">official BIP44 spec</a>
+                    </p>
+                    <h3>BIP49 <span class="small">Derivation scheme for P2WPKH-nested-in-P2SH based accounts</span></h3>
+                    <p>
+                        Read more at the
+                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki" target="_blank">official BIP49 spec</a>
+                    </p>
+                    <h3>Private Keys</h3>
+                    <p>
+                        <span>
+                            Use private keys at
+                            <a href="https://web.archive.org/web/20150707020924/https://brainwallet.org/" target="_blank">brainwallet.org</a>.
+                        </span>
+                        <span>Be careful - it can be easy to make mistakes if you don't know what you're doing.</span>
+                    </p>
+                    <h3 id="entropy-notes">Entropy</h3>
+                    <p>
+                        <span>
+                            Entropy values must be sourced from a
+                            <a href="https://en.wikipedia.org/wiki/Random_number_generation" target="_blank">strong source of randomness</a>.
+                        </span>
+                        <span>This means flipping a fair coin, rolling a fair dice, noise measurements etc.</span>
+                        <span>
+                            Do <strong>NOT</strong> use phrases from books, lyrics from songs, your birthday or street address,
+                            keyboard mashing, or anything you <i>think</i> is random, because chances are overwhelming it isn't
+                            random enough for the needs of this tool.
+                        </span>
+                    </p>
+                    <p>
+                        <strong><span>Do not store entropy.</span></strong>
+                    </p>
+                    <p>
+                        <span>Storing entropy (such as keeping a deck of cards in a specific shuffled order) is unreliable compared to storing a mnemonic.</span>
+                        <span>Instead of storing entropy, store the mnemonic generated from the entropy.</span>
+                        <span><a href="https://en.wikipedia.org/wiki/Steganography#Physical" target="_blank">Steganography</a> may be beneficial when storing the mnemonic.</span>
+                    </p>
+                    <p>
+                        <span>
+                            The random mnemonic generator on this page uses a
+                            <a href="https://developer.mozilla.org/en-US/docs/Web/API/RandomSource/getRandomValues" target="_blank">cryptographically secure random number generator</a>.
+                        </span>
+                        <span>The built in random generator can generally be trusted more than your own intuition about randomness.</span>
+                        <span>If cryptographic randomness isn't available in your browser, this page will show a warning and the generate button will not work.</span>
+                        <span>In that case you might choose to use your own source of entropy.</span>
+                    </p>
+                    <p>
+                        <a href="https://bitcointalk.org/index.php?topic=311000.msg3345309#msg3345309" target="_blank">You are not a good source of entropy.</a>
+                    </p>
+                    <h3>License</h3>
+                    <p>
+                    <span>Please refer to <a href="https://github.com/iancoleman/bip39/blob/master/LICENSE" target="_blank">the software license</a> for more detail.
+                    </span>
+                    </p>
+                    <p>The software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.</p>
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+                    <h2>Alternative Tools</h2>
+                    <p>This tool is interoperable with any BIP39 wallet.</p>
+                    <p>Some similar tools to this one (ie not consumer wallets) are</p>
+                    <p>
+                        <a href="https://bip32jp.github.io/english/">
+                            https://bip32jp.github.io/english/
+                        </a>
+                    </p>
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+
+                    <h2>Offline Usage</h2>
+
+                    <p>
+                    You can use this tool without having to be online.
+                    </p>
+                    <p>
+                    In your browser, select file save-as, and save this page
+                    as a file.
+                    </p>
+                    <p>
+                    Double-click that file to open it in a browser
+                    on any offline computer.
+                    </p>
+                    <p>
+                    <span>Alternatively, download the file from the repository</span>
+                    -
+                    <a href="https://github.com/iancoleman/bip39">https://github.com/iancoleman/bip39</a>
+                    </p>
+
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="row">
+                <div class="col-md-12">
+
+                    <h2>This project is 100% open-source code</h2>
+
+                    <p>
+                        <span>Get the source code from the repository</span>
+                        -
+                        <a href="https://github.com/iancoleman/bip39" target="_blank">
+                            https://github.com/iancoleman/bip39
+                        </a>
+                    </p>
+
+                    <h3>Libraries</h3>
+
+                    <p>
+                        <span>BitcoinJS - </span>
+                        <a href="https://github.com/bitcoinjs/bitcoinjs-lib" target="_blank">
+                            https://github.com/bitcoinjs/bitcoinjs-lib
+                        </a>
+                    </p>
+
+                    <p>
+                        <span>jsBIP39 - </span>
+                        <a href="https://github.com/iancoleman/jsbip39" target="_blank">
+                            https://github.com/iancoleman/jsbip39
+                        </a>
+                    </p>
+
+                    <p>
+                        <span>sjcl - </span>
+                        <a href="https://github.com/bitwiseshiftleft/sjcl" target="_blank">
+                            https://github.com/bitwiseshiftleft/sjcl
+                        </a>
+                    </p>
+
+                    <p>
+                        <span>jQuery - </span>
+                        <a href="https://jquery.com/" target="_blank">
+                            https://jquery.com/
+                        </a>
+                    </p>
+
+                    <p>
+                        <span>Twitter Bootstrap - </span>
+                        <a href="http://getbootstrap.com/" target="_blank">
+                            http://getbootstrap.com/
+                        </a>
+                    </p>
+
                 </div>
             </div>
-            <span>Show more rows</span>:
-            <input type="number" class="rows-to-add" value="20">
-            <button class="more">Show</button>
 
-            <hr>
+        </div>
+
+        <div class="qr-container hidden">
+            <div class="qr-hint bg-primary hidden">Click field to hide QR</div>
+            <div class="qr-hint bg-primary">Click field to show QR</div>
+            <div class="qr-hider hidden">
+                <div class="qr-image"></div>
+                <div class="qr-warning bg-primary">Caution: Scanner may keep history</div>
+            </div>
+        </div>
+
+        <div class="feedback-container">
+            <div class="feedback">Loading...</div>
+        </div>
+
+        <script type="text/template" id="address-row-template">
+            <tr>
+                <td class="index"><span></span></td>
+                <td class="address"><span data-show-qr></span></td>
+                <td class="pubkey"><span data-show-qr></span></td>
+                <td class="privkey"><span data-show-qr></span></td>
+            </tr>
+        </script>
+        <script>// From
+// https://raw.githubusercontent.com/inexorabletash/polyfill/a6bc6ced78160c994f76a909b6ff6bbbab3d43de/es6.js
+// Required for ethereumjs-utils.js when run in phantomjs-2.1.1
+// but is not required in any modern browsers.
+// For more information, see
+// https://www.bountysource.com/issues/38485709-error-rendering-plot-with-phantomjs
+
+//----------------------------------------------------------------------
+//
+// ECMAScript 2015 Polyfills
+//
+//----------------------------------------------------------------------
+
+(function (global) {
+  "use strict";
+
+  // Set this to always override native implementations, for testing
+  // the polyfill in browsers with partial/full ES2015 support.
+  var OVERRIDE_NATIVE_FOR_TESTING = false;
+
+  var undefined = (void 0); // Paranoia
+
+  // Helpers
+
+  function strict(o) {
+    return o === global ? undefined : o;
+  }
+
+  function hook(o, p, f) {
+    var op = o[p];
+    console.assert(typeof op === 'function', 'Hooking a non-function');
+    o[p] = function() {
+      var o = strict(this);
+      var r = f.apply(o, arguments);
+      return r !== undefined ? r : op.apply(o, arguments);
+    };
+  }
+
+  function isSymbol(s) {
+    return (typeof s === 'symbol') || ('Symbol' in global && s instanceof global.Symbol);
+  }
+
+  function getPropertyDescriptor(target, name) {
+    var desc = Object.getOwnPropertyDescriptor(target, name);
+    var proto = Object.getPrototypeOf(target);
+    while (!desc && proto) {
+      desc = Object.getOwnPropertyDescriptor(proto, name);
+      proto = Object.getPrototypeOf(proto);
+    }
+    return desc;
+  }
+
+  var enqueue = (function(nativePromise, nativeSetImmediate) {
+    if (nativePromise)
+      return function(job) { nativePromise.resolve().then(function() { job(); }); };
+    if (nativeSetImmediate)
+      return function(job) { nativeSetImmediate(job); };
+    return function(job) { setTimeout(job, 0); };
+  }(global['Promise'], global['setImmediate']));
+
+  function define(o, p, v, override) {
+    if (p in o && !override && !OVERRIDE_NATIVE_FOR_TESTING)
+      return;
+
+    if (typeof v === 'function') {
+      // Sanity check that functions are appropriately named (where possible)
+      console.assert(isSymbol(p) || !('name' in v) || v.name === p || v.name === p + '_', 'Expected function name "' + p.toString() + '", was "' + v.name + '"');
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: true,
+        enumerable: false,
+        writable: true
+      });
+    } else {
+      Object.defineProperty(o, p, {
+        value: v,
+        configurable: false,
+        enumerable: false,
+        writable: false
+      });
+    }
+  }
+
+  function set_internal(o, p, v) {
+    Object.defineProperty(o, p, {
+      value: v,
+      configurable: false,
+      enumerable: false,
+      writable: true
+    });
+  }
+
+  // Snapshot intrinsic functions
+  var $isNaN = global.isNaN,
+      $parseInt = global.parseInt,
+      $parseFloat = global.parseFloat;
+
+  var E = Math.E,
+      LOG10E = Math.LOG10E,
+      LOG2E = Math.LOG2E,
+      abs = Math.abs,
+      ceil = Math.ceil,
+      exp = Math.exp,
+      floor = Math.floor,
+      log = Math.log,
+      max = Math.max,
+      min = Math.min,
+      pow = Math.pow,
+      random = Math.random,
+      sqrt = Math.sqrt;
+
+  var orig_match = String.prototype.match,
+      orig_replace = String.prototype.replace,
+      orig_search = String.prototype.search,
+      orig_split = String.prototype.split;
+
+  // These are used for implementing the polyfills, but not exported.
+
+  // Inspired by https://gist.github.com/1638059
+  /** @constructor */
+  function EphemeronTable() {
+    var secretKey = ObjectCreate(null);
+
+    function conceal(o) {
+      var oValueOf = o.valueOf, secrets = ObjectCreate(null);
+      Object.defineProperty(o, 'valueOf', {
+          value: (function(secretKey) {
+            return function (k) {
+              return (k === secretKey) ? secrets : oValueOf.apply(o, arguments);
+            };
+          }(secretKey)),
+        configurable: true,
+        writeable: true,
+        enumerable: false
+        });
+      return secrets;
+    }
+
+    function reveal(o) {
+      var v = typeof o.valueOf === 'function' && o.valueOf(secretKey);
+      return v === o ? null : v;
+    }
+
+    return {
+      clear: function() {
+        secretKey = ObjectCreate(null);
+      },
+      remove: function(key) {
+        var secrets = reveal(key);
+        if (secrets && HasOwnProperty(secrets, 'value')) {
+          delete secrets.value;
+          return true;
+        }
+        return false;
+      },
+      get: function(key, defaultValue) {
+        var secrets = reveal(key);
+        return (secrets && HasOwnProperty(secrets, 'value')) ? secrets.value : defaultValue;
+      },
+      has: function(key) {
+        var secrets = reveal(key);
+        return Boolean(secrets && HasOwnProperty(secrets, 'value'));
+      },
+      set: function(key, value) {
+        var secrets = reveal(key) || conceal(key);
+        secrets.value = value;
+      }
+    };
+  }
+
+  var empty = Object.create(null);
+
+  //----------------------------------------------------------------------
+  //
+  // ECMAScript 2015
+  // http://www.ecma-international.org/ecma-262/6.0/
+  //
+  //----------------------------------------------------------------------
+
+  // ---------------------------------------
+  // 19.4 Symbol Objects
+  // ---------------------------------------
+
+  // NOTE: Symbols are defined here - out of spec order - since we need the
+  // properties and prototype to be populated for other polyfills.
+
+  // NOTE: Not secure, nor is obj[$$symbol] hidden from Object.keys()
+
+  var symbolForKey;
+  (function() {
+    var secret = Object.create(null);
+    var symbolMap = {};
+    symbolForKey = function(k) {
+      return symbolMap[k];
+    };
+
+    var GlobalSymbolRegistry = [];
+
+    function unique(bits) {
+      return Array(bits + 1).join('x').replace(/x/g, function() {
+        return random() < 0.5 ? '\u200C' : '\u200D'; // JWNJ / ZWJ
+      });
+    }
+
+    // 19.4.1 The Symbol Constructor
+    // 19.4.1.1 Symbol ( description=undefined )
+    function Symbol(description) {
+      if (!(this instanceof Symbol)) return new Symbol(description, secret);
+      if (this instanceof Symbol && arguments[1] !== secret) throw TypeError();
+
+      var descString = description === undefined ? undefined : String(description);
+
+      set_internal(this, '[[SymbolData]]', unique(128));
+      set_internal(this, '[[Description]]', descString);
+
+      symbolMap[this] = this;
+      return this;
+    }
+
+    if (!('Symbol' in global) || OVERRIDE_NATIVE_FOR_TESTING)
+      global.Symbol = Symbol;
+
+    // 19.4.2 Properties of the Symbol Constructor
+
+    // 19.4.2.1 Symbol.for (key)
+    define(Symbol, 'for', function for_(key) {
+      var stringKey = String(key);
+      for (var i = 0; i < GlobalSymbolRegistry.length; ++i) {
+        var e = GlobalSymbolRegistry[i];
+        if (SameValue(e['[[key]]'], stringKey)) return e['[[symbol]]'];
+      }
+      var newSymbol = Symbol(key);
+      GlobalSymbolRegistry.push({'[[key]]': stringKey, '[[symbol]]': newSymbol});
+      return newSymbol;
+    });
+
+    // 19.4.2.2 Symbol.hasInstance
+    // 19.4.2.3 Symbol.isConcatSpreadable
+
+    // 19.4.2.4 Symbol.iterator
+    define(global.Symbol, 'iterator', global.Symbol('Symbol.iterator'));
+
+    // 19.4.2.5 Symbol.keyFor (sym)
+    define(Symbol, 'keyFor', function keyFor(sym) {
+      if (!(sym instanceof Symbol)) throw TypeError();
+      for (var i = 0; i < GlobalSymbolRegistry.length; ++i) {
+        var e = GlobalSymbolRegistry[i];
+        if (SameValue(e['[[symbol]]'], sym)) return e['[[key]]'];
+      }
+      return undefined;
+    });
+
+    // 19.4.2.6 Symbol.match
+    define(global.Symbol, 'match', global.Symbol('Symbol.match'));
+
+    // 19.4.2.7 Symbol.prototype
+
+    // 19.4.2.8 Symbol.replace
+    define(global.Symbol, 'replace', global.Symbol('Symbol.replace'));
+
+    // 19.4.2.9 Symbol.search
+    define(global.Symbol, 'search', global.Symbol('Symbol.search'));
+
+    // 19.4.2.10 Symbol.species
+
+    // 19.4.2.11 Symbol.search
+    define(global.Symbol, 'split', global.Symbol('Symbol.split'));
+
+    // 19.4.2.12 Symbol.toPrimitive
+
+    // 19.4.2.13 Symbol.toStringTag
+    define(global.Symbol, 'toStringTag', global.Symbol('Symbol.toStringTag'));
+
+    // 19.4.2.14 Symbol.unscopables
+
+    // 19.4.3 Properties of the Symbol Prototype Object
+    // 19.4.3.1 Symbol.prototype.constructor
+
+    // 19.4.3.2 Symbol.prototype.toString ( )
+    Object.defineProperty(Symbol.prototype, 'toString', {
+      value: function toString() {
+        var s = strict(this);
+        var desc = s['[[Description]]'];
+        return 'Symbol(' + (desc === undefined ? '' : desc) + s['[[SymbolData]]'] + ')';
+      },
+      configurable: true, writeable: true, enumerable: false });
+
+    // 19.4.3.3 Symbol.prototype.valueOf ( )
+    Object.defineProperty(Symbol.prototype, 'valueOf', {
+      value: function valueOf() {
+        // To prevent automatic string conversion:
+        throw TypeError();
+
+        // Spec has approximately the following:
+        //var s = strict(this);
+        //if (Type(s) === 'symbol') return s;
+        //if (Type(s) !== 'object') throw TypeError();
+        //if (!('[[SymbolData]]' in s)) throw TypeError();
+        //return s['[[SymbolData]]'];
+      },
+      configurable: true, writeable: true, enumerable: false });
+
+    // 19.4.3.4 Symbol.prototype [ @@toStringTag ]
+    // (Done later to polyfill partial implementations)
+
+    // 19.4.4 Properties of Symbol Instances
+  }());
+
+  console.assert(typeof global.Symbol() === 'symbol' || symbolForKey(String(global.Symbol('x'))));
+
+  // Defined here so that other prototypes can reference it
+  // 25.1.2 The %IteratorPrototype% Object
+  var $IteratorPrototype$ = {};
+
+  //----------------------------------------
+  // 6 ECMAScript Data Types and Values
+  //----------------------------------------
+
+  // 6.1 ECMAScript Language Types
+
+  // "Type(x)" is used as shorthand for "the type of x"...
+  function Type(v) {
+    switch (typeof v) {
+    case 'undefined': return 'undefined';
+    case 'boolean': return 'boolean';
+    case 'number': return 'number';
+    case 'string': return 'string';
+    case 'symbol': return 'symbol';
+    default:
+      if (v === null) return 'null';
+      if (v instanceof global.Symbol) return 'symbol';
+      return 'object';
+    }
+  }
+
+  // 6.1.5.1 Well-Known Symbols
+  var $$iterator = global.Symbol.iterator,
+      $$match = global.Symbol.match,
+      $$replace = global.Symbol.replace,
+      $$search = global.Symbol.search,
+      $$split = global.Symbol.split,
+      $$toStringTag = global.Symbol.toStringTag;
+
+  //----------------------------------------
+  // 7 Abstract Operations
+  //----------------------------------------
+
+  //----------------------------------------
+  // 7.1 Type Conversion
+  //----------------------------------------
+
+  // 7.1.1 ToPrimitive ( input [, PreferredType] )
+  // just use valueOf()
+
+  // 7.1.2 ToBoolean ( argument )
+  // just use Boolean()
+
+  // 7.1.3 ToNumber ( argument )
+  // just use Number()
+
+  // 7.1.4 ToInteger ( argument )
+  function ToInteger(n) {
+    n = Number(n);
+    if ($isNaN(n)) return 0;
+    if (n === 0 || n === Infinity || n === -Infinity) return n;
+    return ((n < 0) ? -1 : 1) * floor(abs(n));
+  }
+
+  // 7.1.5 ToInt32 ( argument )
+  function ToInt32(v) { return v >> 0; }
+
+  // 7.1.6 ToUint32 ( argument )
+  function ToUint32(v) { return v >>> 0; }
+
+  // 7.1.7 ToInt16 ( argument )
+  function ToInt16(v) { return (v << 16) >> 16; }
+
+  // 7.1.8 ToUint16 ( argument )
+  function ToUint16(v) { return v & 0xFFFF; }
+
+  // 7.1.9 ToInt8 ( argument )
+  function ToInt8(v) { return (v << 24) >> 24; }
+
+  // 7.1.10 ToUint8 ( argument )
+  function ToUint8(v) { return v & 0xFF; }
+
+  // 7.1.11 ToUint8Clamp ( argument )
+  function ToUint8Clamp(argument) {
+    var number = Number(argument);
+    if ($isNaN(number)) return 0;
+    if (number <= 0) return 0;
+    if (number >= 255) return 255;
+    var f = floor(number);
+    if ((f + 0.5) < number) return f + 1;
+    if (number < (f + 0.5)) return f;
+    if (f % 2) return f + 1;
+    return f;
+  }
+
+  // 7.1.12 ToString ( argument )
+  // just use String()
+
+  // 7.1.13 ToObject ( argument )
+  function ToObject(v) {
+    if (v === null || v === undefined) throw TypeError();
+    return Object(v);
+  }
+
+  // 7.1.14 ToPropertyKey ( argument )
+  function ToPropertyKey(v) {
+    return String(v);
+  }
+
+  // 7.1.15 ToLength ( argument )
+  function ToLength(v) {
+    var len = ToInteger(v);
+    if (len <= 0) return 0;
+    if (len === Infinity) return 0x20000000000000 - 1; // 2^53-1
+    return min(len, 0x20000000000000 - 1); // 2^53-1
+  }
+
+  // 7.1.16 CanonicalNumericIndexString ( argument )
+
+  //----------------------------------------
+  // 7.2 Testing and Comparison Operations
+  //----------------------------------------
+
+  // 7.2.1 RequireObjectCoercible ( argument )
+  // 7.2.2 IsArray ( argument )
+
+  // 7.2.3 IsCallable ( argument )
+  function IsCallable(o) { return typeof o === 'function'; }
+
+  // 7.2.4 IsConstructor ( argument )
+  function IsConstructor(o) {
+    // Hacks for Safari 7 TypedArray XXXConstructor objects
+    if (/Constructor/.test(Object.prototype.toString.call(o))) return true;
+    if (/Function/.test(Object.prototype.toString.call(o))) return true;
+    // TODO: Can this be improved on?
+    return typeof o === 'function';
+  }
+
+  // 7.2.5 IsExtensible (O)
+  // 7.2.6 IsInteger ( argument )
+
+  // 7.2.7 IsPropertyKey ( argument )
+  function IsPropertyKey(argument) {
+    if (Type(argument) === 'string') return true;
+    if (Type(argument) === 'symbol') return true;
+    return false;
+  }
+
+  // 7.2.8 IsRegExp ( argument )
+  // 7.2.5 IsConstructor ( argument )
+
+  // 7.2.9 SameValue(x, y)
+  function SameValue(x, y) {
+    if (typeof x !== typeof y) return false;
+    switch (typeof x) {
+    case 'undefined':
+      return true;
+    case 'number':
+      if (x !== x && y !== y) return true;
+      if (x === 0 && y === 0) return 1/x === 1/y;
+      return x === y;
+    case 'boolean':
+    case 'string':
+    case 'object':
+    default:
+      return x === y;
+    }
+  }
+
+  // 7.2.10 SameValueZero(x, y)
+  function SameValueZero(x, y) {
+    if (typeof x !== typeof y) return false;
+    switch (typeof x) {
+    case 'undefined':
+      return true;
+    case 'number':
+      if (x !== x && y !== y) return true;
+      return x === y;
+    case 'boolean':
+    case 'string':
+    case 'object':
+    default:
+      return x === y;
+    }
+  }
+
+  //----------------------------------------
+  // 7.3 Operations on Objects
+  //----------------------------------------
+
+  // 7.3.1 Get (O, P)
+  // - just use o.p or o[p]
+
+  // 7.3.2 GetV (V, P)
+  function GetV(v, p) {
+    var o = ToObject(v);
+    return o[p];
+  }
+
+  // 7.3.3 Set (O, P, V, Throw)
+  // - just use o.p = v or o[p] = v
+
+
+
+
+  // 7.3.9 GetMethod (O, P)
+  function GetMethod(o, p) {
+    var func = GetV(o, p);
+    if (func === undefined || func === null) return undefined;
+    if (!IsCallable(func)) throw TypeError();
+    return func;
+  }
+
+  // 7.3.10 HasProperty (O, P)
+  function HasProperty(o, p) {
+    while (o) {
+      if (Object.prototype.hasOwnProperty.call(o, p)) return true;
+      if (Type(o) !== 'object') return false;
+      o = Object.getPrototypeOf(o);
+    }
+    return false;
+  }
+
+  // 7.3.11 HasOwnProperty (O, P)
+  function HasOwnProperty(o, p) {
+    return Object.prototype.hasOwnProperty.call(o, p);
+  }
+
+  //----------------------------------------
+  // 7.4 Operations on Iterator Objects
+  //----------------------------------------
+
+  // 7.4.1 GetIterator ( obj, method )
+  function GetIterator(obj, method) {
+    if (arguments.length < 2)
+      method = GetMethod(obj, $$iterator);
+    var iterator = method.call(obj);
+    if (Type(iterator) !== 'object') throw TypeError();
+    return iterator;
+  }
+
+  // 7.4.2 IteratorNext ( iterator, value )
+  function IteratorNext(iterator, value) {
+    if (arguments.length < 2)
+      var result = iterator.next();
+    else
+      result = iterator.next(value);
+    if (Type(result) !== 'object') throw TypeError();
+    return result;
+  }
+
+  // 7.4.3 IteratorComplete ( iterResult )
+  function IteratorComplete(iterResult) {
+    console.assert(Type(iterResult) === 'object');
+    return Boolean(iterResult.done);
+  }
+
+  // 7.4.4 IteratorValue ( iterResult )
+  function IteratorValue(iterResult) {
+    console.assert(Type(iterResult) === 'object');
+    return iterResult.value;
+  }
+
+  // 7.4.5 IteratorStep ( iterator )
+  function IteratorStep( iterator, value ) {
+    var result = IteratorNext(iterator, value);
+    var done = result['done'];
+    if (Boolean(done) === true) return false;
+    return result;
+  }
+
+  // 7.4.6 IteratorClose( iterator, completion )
+  function IteratorClose( iterator, completion ) {
+    console.assert(Type(iterator) === 'object');
+    var _return = GetMethod(iterator, 'return');
+    if (_return === undefined) return completion;
+    try {
+      var innerResult = _return[iterator]();
+    } catch (result) {
+      // TODO: If completion.[[type]] is throw, return completion
+      return result;
+    }
+    if (Type(innerResult) !== 'object') throw TypeError();
+    return completion;
+  }
+
+  // 7.4.7 CreateIterResultObject (value, done)
+  function CreateIterResultObject(value, done) {
+    console.assert(Type(done) === 'boolean');
+    var obj = {};
+    obj["value"] = value;
+    obj["done"] = done;
+    return obj;
+  }
+
+  // 7.4.8 CreateListIterator (list)
+  // 7.4.8.1 ListIterator next( )
+  // 7.4.9 CreateCompoundIterator ( iterator1, iterator2 )
+  // 7.4.9.1 CompoundIterator next( )
+
+  //----------------------------------------
+  // 8 Executable Code and Execution Contexts
+  //----------------------------------------
+
+  //----------------------------------------
+  // 8.4 Jobs and Job Queues
+  //----------------------------------------
+
+  // 8.4.1 EnqueueJob ( queueName, job, arguments)
+  function EnqueueJob(queueName, job, args) {
+    var fn = function() { job.apply(undefined, args); };
+    enqueue(fn);
+  }
+
+  // 8.4.2 NextJob result
+  function NextJob(result) {
+    // no-op
+  }
+
+  //----------------------------------------
+  // 9 Ordinary and Exotic Objects Behaviors
+  //----------------------------------------
+
+  // 9.1.11 [[Enumerate]] ()
+  function Enumerate(obj) {
+    var e = [];
+    if (Object(obj) !== obj) return e;
+    var visited = new Set;
+    while (obj !== null) {
+      Object.getOwnPropertyNames(obj).forEach(function(name) {
+        if (!visited.has(name)) {
+          var desc = Object.getOwnPropertyDescriptor(obj, name);
+          if (desc) {
+            visited.add(name);
+            if (desc.enumerable) e.push(name);
+          }
+        }
+      });
+      obj = Object.getPrototypeOf(obj);
+    }
+    return e[$$iterator]();
+  }
+
+  // 9.1.12 [[OwnPropertyKeys]] ( )
+  function OwnPropertyKeys(o) {
+    return Object.getOwnPropertyNames(o);
+  }
+
+  // 9.1.13 ObjectCreate(proto, internalSlotsList)
+  function ObjectCreate(proto, internalSlotsList) {
+    return Object.create(proto, internalSlotsList);
+  }
+
+  // ---------------------------------------
+  // 19 Fundamental Objects
+  // ---------------------------------------
+
+  // ---------------------------------------
+  // 19.1 Object Objects
+  // ---------------------------------------
+
+  // 19.1.1 The Object Constructor
+  // 19.1.1.1 Object ( [ value ] )
+  // 19.1.2 Properties of the Object Constructor
+  // 19.1.2.1 Object.assign ( target, ...sources )
+  define(
+    Object, 'assign',
+    function assign(target, /*...*/sources) {
+      var to = ToObject(target);
+      if (arguments.length < 2) return to;
+
+      var sourcesIndex = 1;
+      while (sourcesIndex < arguments.length) {
+        var nextSource = arguments[sourcesIndex++];
+        if (nextSource === undefined || nextSource === null) {
+          var keys = [];
+        } else {
+          var from = ToObject(nextSource);
+          keys = OwnPropertyKeys(from);
+        }
+        for (var keysIndex = 0; keysIndex < keys.length; ++keysIndex) {
+          var nextKey = keys[keysIndex];
+          var desc = Object.getOwnPropertyDescriptor(from, nextKey);
+          if (desc !== undefined && desc.enumerable) {
+            var propValue = from[nextKey];
+            to[nextKey] = propValue;
+          }
+        }
+      }
+      return to;
+    });
+
+  // 19.1.2.2 Object.create ( O [ , Properties ] )
+  // 19.1.2.3 Object.defineProperties ( O, Properties )
+  // 19.1.2.4 Object.defineProperty ( O, P, Attributes )
+  // 19.1.2.5 Object.freeze ( O )
+  // 19.1.2.6 Object.getOwnPropertyDescriptor ( O, P )
+
+  (function() {
+    var nativeSymbols = (typeof global.Symbol() === 'symbol'),
+        $getOwnPropertyNames = Object.getOwnPropertyNames,
+        $keys = Object.keys,
+        $window_names = (typeof window === 'object' ? $getOwnPropertyNames(window) : []);
+
+    function isStringKey(k) { return !symbolForKey(k); }
+
+    // 19.1.2.7 Object.getOwnPropertyNames ( O )
+    define(
+      Object, 'getOwnPropertyNames',
+      function getOwnPropertyNames(o) {
+        if (Object.prototype.toString.call(o) === '[object Window]') {
+          // Workaround for cross-realm calling by IE itself.
+          // https://github.com/inexorabletash/polyfill/issues/96
+          try {
+            return $getOwnPropertyNames(o).filter(isStringKey);
+          } catch (_) {
+            return $window_names.slice();
+          }
+        }
+        return $getOwnPropertyNames(o).filter(isStringKey);
+      }, !nativeSymbols);
+
+    // 19.1.2.8 Object.getOwnPropertySymbols ( O )
+    define(
+      Object, 'getOwnPropertySymbols',
+      function getOwnPropertySymbols(o) {
+        return $getOwnPropertyNames(o).filter(symbolForKey).map(symbolForKey);
+      }, !nativeSymbols);
+
+    // 19.1.2.14 Object.keys ( O )
+    define(
+      Object, 'keys',
+      function keys(o) {
+        return $keys(o).filter(isStringKey);
+      }, !nativeSymbols);
+  }());
+
+  // 19.1.2.9 Object.getPrototypeOf ( O )
+  // 19.1.2.10 Object.is ( value1, value2 )
+  define(
+    Object, 'is',
+    function is(value1, value2) {
+      return SameValue(value1, value2);
+    });
+
+  // 19.1.2.11 Object.isExtensible ( O )
+  // 19.1.2.12 Object.isFrozen ( O )
+  // 19.1.2.13 Object.isSealed ( O )
+
+  // 19.1.2.14 Object.keys ( O )
+  // see above
+
+  // 19.1.2.15 Object.preventExtensions ( O )
+  // 19.1.2.16 Object.prototype
+  // 19.1.2.17 Object.seal ( O )
+
+  // 19.1.2.18 Object.setPrototypeOf ( O, proto )
+  define(
+    Object, 'setPrototypeOf',
+    function setPrototypeOf(o, proto) {
+      if (Type(o) !== 'object') throw TypeError();
+      if (Type(proto) !== 'object' && Type(proto) !== 'null') throw TypeError();
+      o.__proto__ = proto;
+      return o;
+    }
+  );
+
+  // 19.1.3 Properties of the Object Prototype Object
+  // 19.1.3.1 Object.prototype.constructor
+  // 19.1.3.2 Object.prototype.hasOwnProperty ( V )
+  // 19.1.3.3 Object.prototype.isPrototypeOf ( V )
+  // 19.1.3.4 Object.prototype.propertyIsEnumerable ( V )
+  // 19.1.3.5 Object.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
+  // 19.1.3.6 Object.prototype.toString ( )
+  hook(Object.prototype, 'toString',
+       function() {
+         var o = strict(this);
+         if (o === Object(o) && $$toStringTag in o) {
+           return '[object ' + o[$$toStringTag] + ']';
+         }
+         return undefined;
+       });
+
+  // 19.1.3.7 Object.prototype.valueOf ( )
+  // 19.1.4 Properties of Object Instances
+
+  // ---------------------------------------
+  // 19.2 Function Objects
+  // ---------------------------------------
+
+  // 19.2.1 The Function Constructor
+  // 19.2.1.1 Function ( p1, p2, … , pn, body )
+  // 19.2.2 Properties of the Function Constructor
+  // 19.2.2.1 Function.length
+  // 19.2.2.2 Function.prototype
+  // 19.2.3 Properties of the Function Prototype Object
+  // 19.2.3.1 Function.prototype.apply ( thisArg, argArray )
+  // 19.2.3.2 Function.prototype.bind ( thisArg , ...args)
+  // 19.2.3.3 Function.prototype.call (thisArg , ...args)
+  // 19.2.3.4 Function.prototype.constructor
+  // 19.2.3.5 Function.prototype.toString ( )
+  // 19.2.3.6 Function.prototype[@@hasInstance] ( V )
+  // 19.2.4 Function Instances
+  // 19.2.4.1 length
+  // 19.2.4.2 name
+  // 19.2.4.3 prototype
+
+  // (No polyfillable changes from ES5)
+
+  // ---------------------------------------
+  // 19.3 Boolean Objects
+  // ---------------------------------------
+
+  // 19.3.1 The Boolean Constructor
+  // 19.3.1.1 Boolean ( value )
+  // 19.3.2 Properties of the Boolean Constructor
+  // 19.3.2.1 Boolean.prototype
+  // 19.3.3 Properties of the Boolean Prototype Object
+  // 19.3.3.1 Boolean.prototype.constructor
+  // 19.3.3.2 Boolean.prototype.toString ( )
+  // 19.3.3.3 Boolean.prototype.valueOf ( )
+  // 19.3.4 Properties of Boolean Instances
+
+  // (No polyfillable changes from ES5)
+
+  // ---------------------------------------
+  // 19.4 Symbol Objects
+  // ---------------------------------------
+
+  // Moved earlier in this script, so that other polyfills can depend on them.
+
+  // 19.4.3.4 Symbol.prototype [ @@toStringTag ]
+  define(global.Symbol.prototype, global.Symbol.toStringTag, 'Symbol');
+
+  // ---------------------------------------
+  // 19.5 Error Objects
+  // ---------------------------------------
+
+  // 19.5.1 The Error Constructor
+  // 19.5.1.1 Error ( message )
+  // 19.5.1.2 new Error( ...argumentsList )
+  // 19.5.2 Properties of the Error Constructor
+  // 19.5.2.1 Error.prototype
+  // 19.5.3 Properties of the Error Prototype Object
+  // 19.5.3.1 Error.prototype.constructor
+  // 19.5.3.2 Error.prototype.message
+  // 19.5.3.3 Error.prototype.name
+  // 19.5.3.4 Error.prototype.toString ( )
+  // 19.5.4 Properties of Error Instances
+  // 19.5.5 Native Error Types Used in This Standard
+  // 19.5.5.1 EvalError
+  // 19.5.5.2 RangeError
+  // 19.5.5.3 ReferenceError
+  // 19.5.5.4 SyntaxError
+  // 19.5.5.5 TypeError
+  // 19.5.5.6 URIError
+  // 19.5.6 NativeError Object Structure
+  // 19.5.6.1 NativeError Constructors
+  // 19.5.6.1.1 NativeError ( message )
+  // 19.5.6.1.2 new NativeError ( ...argumentsList )
+  // 19.5.6.2 Properties of the NativeError Constructors
+  // 19.5.6.2.1 NativeError.prototype
+  // 19.5.6.3 Properties of the NativeError Prototype Objects
+  // 19.5.6.4 Properties of NativeError Instances
+
+  // (No polyfillable changes from ES5)
+
+  // ---------------------------------------
+  // 20 Numbers and Dates
+  // ---------------------------------------
+
+  // ---------------------------------------
+  // 20.1 Number Objects
+  // ---------------------------------------
+
+  // 20.1.1 The Number Constructor
+  // 20.1.1.1 Number ( [ value ] )
+  // 20.1.1.2 new Number ( ...argumentsList )
+  // 20.1.2 Properties of the Number Constructor
+
+  // 20.1.2.1 Number.EPSILON
+  define(
+    Number, 'EPSILON',
+    (function () {
+      var next, result;
+      for (next = 1; 1 + next !== 1; next = next / 2)
+        result = next;
+      return result;
+    }()));
+
+  // 20.1.2.2 Number.isFinite ( number )
+  define(
+    Number, 'isFinite',
+    function isFinite(number) {
+      if (Type(number) !== 'number') return false;
+      if (number !== number || number === +Infinity || number === -Infinity) return false;
+      return true;
+    });
+
+  // 20.1.2.3 Number.isInteger ( number )
+  define(
+    Number, 'isInteger',
+    function isInteger(number) {
+      if (Type(number) !== 'number') return false;
+      if (number !== number || number === +Infinity || number === -Infinity) return false;
+      var integer = ToInteger(number);
+      if (integer !== number) return false;
+      return true;
+    });
+
+  // 20.1.2.4 Number.isNaN ( number )
+  define(
+    Number, 'isNaN',
+    function isNaN(number) {
+      if (Type(number) !== 'number') return false;
+      if (number !== number) return true;
+      return false;
+    });
+
+  // 20.1.2.5 Number.isSafeInteger ( number )
+  define(
+    Number, 'isSafeInteger',
+    function isSafeInteger(number) {
+      if (Type(number) !== 'number') return false;
+      if (number !== number || number === +Infinity || number === -Infinity) return false;
+      var integer = ToInteger(number);
+      if (integer !== number) return false;
+      if (abs(integer) <= (0x20000000000000 - 1)) // 2^53-1
+        return true;
+      return false;
+    });
+
+  // 20.1.2.6 Number.MAX_SAFE_INTEGER
+  define(
+    Number, 'MAX_SAFE_INTEGER',
+    9007199254740991); // 2^53-1
+
+  // 20.1.2.7 Number.MAX_VALUE
+
+  // 20.1.2.8 Number.MIN_SAFE_INTEGER
+  define(
+    Number, 'MIN_SAFE_INTEGER',
+    -9007199254740991); // -2^53+1
+
+  // 20.1.2.9 Number.MIN_VALUE
+  // 20.1.2.10 Number.NaN
+  // 20.1.2.11 Number.NEGATIVE_INFINITY
+
+  // 20.1.2.12 Number.parseFloat ( string )
+  define(Number, 'parseFloat', $parseFloat);
+
+  // 20.1.2.13 Number.parseInt ( string, radix )
+  define(Number, 'parseInt', $parseInt);
+
+  // 20.1.2.14 Number.POSITIVE_INFINITY
+  // 20.1.2.15 Number.prototype
+
+  // 20.1.3 Properties of the Number Prototype Object
+  // 20.1.3.1 Number.prototype.constructor
+  // 20.1.3.2 Number.prototype.toExponential ( fractionDigits )
+  // 20.1.3.3 Number.prototype.toFixed ( fractionDigits )
+  // 20.1.3.4 Number.prototype.toLocaleString( [ reserved1 [ , reserved2 ] ])
+  // 20.1.3.5 Number.prototype.toPrecision ( precision )
+  // 20.1.3.6 Number.prototype.toString ( [ radix ] )
+  // 20.1.3.7 Number.prototype.valueOf ( )
+  // 20.1.4 Properties of Number Instances
+
+  // ---------------------------------------
+  // 20.2 The Math Object
+  // ---------------------------------------
+
+  // 20.2.1 Value Properties of the Math Object
+  // 20.2.1.1 Math.E
+  // 20.2.1.2 Math.LN10
+  // 20.2.1.3 Math.LN2
+  // 20.2.1.4 Math.LOG10E
+  // 20.2.1.5 Math.LOG2E
+  // 20.2.1.6 Math.PI
+  // 20.2.1.7 Math.SQRT1_2
+  // 20.2.1.8 Math.SQRT2
+
+  // 20.2.1.9 Math [ @@toStringTag ]
+  define(Math, $$toStringTag, 'Math');
+
+  // 20.2.2 Function Properties of the Math Object
+  // 20.2.2.1 Math.abs ( x )
+  // 20.2.2.2 Math.acos ( x )
+
+  // 20.2.2.3 Math.acosh(x)
+  define(
+    Math, 'acosh',
+    function acosh(x) {
+      x = Number(x);
+      return log(x + sqrt(x * x - 1));
+    });
+
+  // 20.2.2.4 Math.asin ( x )
+
+  // 20.2.2.5 Math.asinh( x )
+  define(
+    Math, 'asinh',
+    function asinh(x) {
+      x = Number(x);
+      if (SameValue(x, -0)) {
+        return x;
+      }
+      var s = sqrt(x * x + 1);
+      return (s === -x) ? log(0) : log(x + s);
+    });
+
+  // 20.2.2.6 Math.atan ( x )
+
+  // 20.2.2.7 Math.atanh( x )
+  define(
+    Math, 'atanh',
+    function atanh(x) {
+      x = Number(x);
+      return (x === 0) ? x : log((1 + x) / (1 - x)) / 2;
+    });
+
+  // 20.2.2.8 Math.atan2 ( y, x )
+
+  // 20.2.2.9 Math.cbrt ( x )
+  define(
+    Math, 'cbrt',
+    function cbrt(x) {
+      x = Number(x);
+      if ($isNaN(x/x)) {
+        return x;
+      }
+      var r = pow(abs(x), 1/3);
+      var t = x/r/r;
+      return r + (r * (t-r) / (2*r + t));
+    });
+
+  // 20.2.2.10 Math.ceil ( x )
+
+  // 20.2.2.11 Math.clz32 ( x )
+  define(
+    Math, 'clz32',
+    function clz32(x) {
+      function clz8(x) {
+        return (x & 0xf0) ? (x & 0x80 ? 0 : x & 0x40 ? 1 : x & 0x20 ? 2 : 3) :
+        (x & 0x08 ? 4 : x & 0x04 ? 5 : x & 0x02 ? 6 : x & 0x01 ? 7 : 8);
+      }
+      x = ToUint32(x);
+      return x & 0xff000000 ? clz8(x >> 24) :
+        x & 0xff0000 ? clz8(x >> 16) + 8 :
+        x & 0xff00 ? clz8(x >> 8) + 16 : clz8(x) + 24;
+    });
+
+
+
+  // 20.2.2.12 Math.cos ( x )
+
+  // 20.2.2.13 Math.cosh ( x )
+  define(
+    Math, 'cosh',
+    function cosh(x) {
+      x = Number(x);
+      return (pow(E, x) + pow(E, -x)) / 2;
+    });
+
+  // 20.2.2.14 Math.exp ( x )
+
+  // 20.2.2.15 Math.expm1 ( x )
+  define(
+    Math, 'expm1',
+    function expm1(x) {
+      x = Number(x);
+      // from: http://www.johndcook.com/cpp_log1p.html
+      if (SameValue(x, -0)) {
+        return -0;
+      } else if (abs(x) < 1e-5) {
+        return x + 0.5 * x * x; // two terms of Taylor expansion
+      } else {
+        return exp(x) - 1;
+      }
+    });
+
+  // 20.2.2.16 Math.floor ( x )
+
+  // 20.2.2.17 Math.fround ( x )
+  define(
+    Math, 'fround',
+    function fround(x) {
+      if ($isNaN(x)) {
+        return NaN;
+      }
+      if (1/x === +Infinity || 1/x === -Infinity || x === +Infinity || x === -Infinity) {
+        return x;
+      }
+      return (new Float32Array([x]))[0];
+    });
+
+  // 20.2.2.18 Math.hypot ( value1 [, value2 [ ... ] ] )
+  define(
+    Math, 'hypot',
+    function hypot() {
+      var values = [];
+      var m = 0, sawNaN = false;
+      for (var i = 0; i < arguments.length; ++i) {
+        var n = abs(Number(arguments[i]));
+        if (n === Infinity) return n;
+        if (n !== n) sawNaN = true;
+        if (n > m) m = n;
+        values[i] = n;
+      }
+      if (sawNaN) return NaN;
+      if (m === 0) return +0;
+      var sum = +0;
+      for (i = 0; i < values.length; ++i) {
+        var r = values[i] / m;
+        sum = sum + r * r;
+      }
+      return m * sqrt(sum);
+    });
+
+  // 20.2.2.19 Math.imul ( x, y )
+  define(
+    Math, 'imul',
+    function imul(x, y) {
+      var a = ToUint32(x);
+      var b = ToUint32(y);
+      // (slow but accurate)
+      var ah  = (a >>> 16) & 0xffff;
+      var al = a & 0xffff;
+      var bh  = (b >>> 16) & 0xffff;
+      var bl = b & 0xffff;
+      return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
+    }, ('imul' in Math && Math.imul(1, 0x80000000) === 0) // Safari 7 bug
+  );
+
+  // 20.2.2.20 Math.log ( x )
+
+  // 20.2.2.21 Math.log1p ( x )
+  define(
+    Math, 'log1p',
+    function log1p(x) {
+      x = Number(x);
+      // from: http://www.johndcook.com/cpp_expm1.html
+      if (x < -1) {
+        return NaN;
+      } else if (SameValue(x, -0)) {
+        return -0;
+      } else if (abs(x) > 1e-4) {
+        return log(1 + x);
+      } else {
+        return (-0.5 * x + 1) * x;
+      }
+    });
+
+  // 20.2.2.22 Math.log10 ( x )
+  define(
+    Math, 'log10',
+    function log10(x) {
+      x = Number(x);
+      return log(x) * LOG10E;
+    });
+
+  // 20.2.2.23 Math.log2 ( x )
+  define(
+    Math, 'log2',
+    function log2(x) {
+      x = Number(x);
+      return log(x) * LOG2E;
+    });
+
+  // 20.2.2.24 Math.max ( value1, value2 , ...values )
+  // 20.2.2.25 Math.min ( value1, value2 , ...values )
+  // 20.2.2.26 Math.pow ( x, y )
+  // 20.2.2.27 Math.random ( )
+  // 20.2.2.28 Math.round ( x )
+
+  // 20.2.2.29 Math.sign(x)
+  define(
+    Math, 'sign',
+    function sign(x) {
+      x = Number(x);
+      return x < 0 ? -1 : x > 0 ? 1 : x;
+    });
+
+  // 20.2.2.30 Math.sin ( x )
+
+  // 20.2.2.31 Math.sinh( x )
+  define(
+    Math, 'sinh',
+    function sinh(x) {
+      x = Number(x);
+      return SameValue(x, -0) ? x : (pow(E, x) - pow(E, -x)) / 2;
+    });
+
+  // 20.2.2.32 Math.sqrt ( x )
+  // 20.2.2.33 Math.tan ( x )
+
+  // 20.2.2.34 Math.tanh ( x )
+  define(
+    Math, 'tanh',
+    function tanh(x) {
+      x = Number(x);
+      var n = pow(E, 2 * x) - 1,
+          d = pow(E, 2 * x) + 1;
+      if (SameValue(x, -0))
+        return x;
+      return (n === d) ? 1 : n / d; // Handle Infinity/Infinity
+    });
+
+  // 20.2.2.35 Math.trunc ( x )
+  define(
+    Math, 'trunc',
+    function trunc(x) {
+      x = Number(x);
+      return $isNaN(x) ? NaN :
+        x < 0 ? ceil(x) : floor(x);
+    });
+
+  // ---------------------------------------
+  // 20.3 Date Objects
+  // ---------------------------------------
+
+  // 20.3.1 Overview of Date Objects and Definitions of Abstract Operations
+  // 20.3.1.1 Time Values and Time Range
+  // 20.3.1.2 Day Number and Time within Day
+  // 20.3.1.3 Year Number
+  // 20.3.1.4 Month Number
+  // 20.3.1.5 Date Number
+  // 20.3.1.6 Week Day
+  // 20.3.1.7 Local Time Zone Adjustment
+  // 20.3.1.8 Daylight Saving Time Adjustment
+  // 20.3.1.9 Local Time
+  // 20.3.1.10 Hours, Minutes, Second, and Milliseconds
+  // 20.3.1.11 MakeTime (hour, min, sec, ms)
+  // 20.3.1.12 MakeDay (year, month, date)
+  // 20.3.1.13 MakeDate (day, time)
+  // 20.3.1.14 TimeClip (time)
+  // 20.3.1.15 Date Time String Format
+  // 20.3.1.15.1 Extended years
+  // 20.3.2 The Date Constructor
+  // 20.3.2.1 Date ( year, month [, date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] )
+  // 20.3.2.2 Date ( value )
+  // 20.3.2.3 Date ( )
+  // 20.3.3 Properties of the Date Constructor
+  // 20.3.3.1 Date.now ( )
+  // 20.3.3.2 Date.parse (string)
+  // 20.3.3.3 Date.prototype
+  // 20.3.3.4 Date.UTC ( year, month [ , date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] )
+  // 20.3.4 Properties of the Date Prototype Object
+  // 20.3.4.1 Date.prototype.constructor
+  // 20.3.4.2 Date.prototype.getDate ( )
+  // 20.3.4.3 Date.prototype.getDay ( )
+  // 20.3.4.4 Date.prototype.getFullYear ( )
+  // 20.3.4.5 Date.prototype.getHours ( )
+  // 20.3.4.6 Date.prototype.getMilliseconds ( )
+  // 20.3.4.7 Date.prototype.getMinutes ( )
+  // 20.3.4.8 Date.prototype.getMonth ( )
+  // 20.3.4.9 Date.prototype.getSeconds ( )
+  // 20.3.4.10 Date.prototype.getTime ( )
+  // 20.3.4.11 Date.prototype.getTimezoneOffset ( )
+  // 20.3.4.12 Date.prototype.getUTCDate ( )
+  // 20.3.4.13 Date.prototype.getUTCDay ( )
+  // 20.3.4.14 Date.prototype.getUTCFullYear ( )
+  // 20.3.4.15 Date.prototype.getUTCHours ( )
+  // 20.3.4.16 Date.prototype.getUTCMilliseconds ( )
+  // 20.3.4.17 Date.prototype.getUTCMinutes ( )
+  // 20.3.4.18 Date.prototype.getUTCMonth ( )
+  // 20.3.4.19 Date.prototype.getUTCSeconds ( )
+  // 20.3.4.20 Date.prototype.setDate ( date )
+  // 20.3.4.21 Date.prototype.setFullYear ( year [ , month [ , date ] ] )
+  // 20.3.4.22 Date.prototype.setHours ( hour [ , min [ , sec [ , ms ] ] ] )
+  // 20.3.4.23 Date.prototype.setMilliseconds ( ms )
+  // 20.3.4.24 Date.prototype.setMinutes ( min [ , sec [ , ms ] ] )
+  // 20.3.4.25 Date.prototype.setMonth ( month [ , date ] )
+  // 20.3.4.26 Date.prototype.setSeconds ( sec [ , ms ] )
+  // 20.3.4.27 Date.prototype.setTime ( time )
+  // 20.3.4.28 Date.prototype.setUTCDate ( date )
+  // 20.3.4.29 Date.prototype.setUTCFullYear ( year [ , month [ , date ] ] )
+  // 20.3.4.30 Date.prototype.setUTCHours ( hour [ , min [ , sec [ , ms ] ] ] )
+  // 20.3.4.31 Date.prototype.setUTCMilliseconds ( ms )
+  // 20.3.4.32 Date.prototype.setUTCMinutes ( min [ , sec [, ms ] ] )
+  // 20.3.4.33 Date.prototype.setUTCMonth ( month [ , date ] )
+  // 20.3.4.34 Date.prototype.setUTCSeconds ( sec [ , ms ] )
+  // 20.3.4.35 Date.prototype.toDateString ( )
+  // 20.3.4.36 Date.prototype.toISOString ( )
+  // 20.3.4.37 Date.prototype.toJSON ( key )
+  // 20.3.4.38 Date.prototype.toLocaleDateString ( [ reserved1 [ , reserved2 ] ] )
+  // 20.3.4.39 Date.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
+  // 20.3.4.40 Date.prototype.toLocaleTimeString ( [ reserved1 [ , reserved2 ] ] )
+  // 20.3.4.41 Date.prototype.toString ( )
+  // 20.3.4.42 Date.prototype.toTimeString ( )
+  // 20.3.4.43 Date.prototype.toUTCString ( )
+  // 20.3.4.44 Date.prototype.valueOf ( )
+  // 20.3.4.45 Date.prototype [ @@toPrimitive ] ( hint )
+  // 20.3.5 Properties of Date Instances
+
+  // (No polyfillable changes from ES5)
+
+  // ---------------------------------------
+  // 21 Text Processing
+  // ---------------------------------------
+
+  var string_regexp_dispatch = (function() {
+    var faux = {}, secret = Symbol();
+    faux[Symbol.match] = function() { return secret; };
+    return ("").match(faux) === secret;
+  }());
+
+  // 21.1 String Objects
+  // 21.1.1 The String Constructor
+  // 21.1.1.1 String ( value )
+  // 21.1.2 Properties of the String Constructor
+  // 21.1.2.1 String.fromCharCode ( ...codeUnits )
+
+  // 21.1.2.2 String.fromCodePoint ( ...codePoints )
+  define(
+    String, 'fromCodePoint',
+    function fromCodePoint(/*...codePoints*/) {
+      var codePoints = arguments,
+          length = codePoints.length,
+          elements = [],
+          nextIndex = 0;
+      while (nextIndex < length) {
+        var next = codePoints[nextIndex];
+        var nextCP = Number(next);
+        if (!SameValue(nextCP, ToInteger(nextCP)) ||
+            nextCP < 0 || nextCP > 0x10FFFF) {
+          throw RangeError('Invalid code point ' + nextCP);
+        }
+        if (nextCP < 0x10000) {
+          elements.push(String.fromCharCode(nextCP));
+        } else {
+          nextCP -= 0x10000;
+          elements.push(String.fromCharCode((nextCP >> 10) + 0xD800));
+          elements.push(String.fromCharCode((nextCP % 0x400) + 0xDC00));
+        }
+        nextIndex += 1;
+      }
+      return elements.join('');
+    });
+
+  // 21.1.2.3 String.prototype
+
+  // 21.1.2.4 String.raw ( template , ...substitutions )
+  define(
+    String, 'raw',
+    function raw(template /*, ...substitutions*/) {
+      var substitutions = [].slice.call(arguments, 1);
+
+      var cooked = Object(template);
+      var rawValue = cooked['raw'];
+      var raw = Object(rawValue);
+      var len = raw['length'];
+      var literalSegments = ToLength(len);
+      if (literalSegments <= 0) return '';
+      var stringElements = [];
+      var nextIndex = 0;
+      while (true) {
+        var next = raw[nextIndex];
+        var nextSeg = String(next);
+        stringElements.push(nextSeg);
+        if (nextIndex + 1 === literalSegments)
+          return stringElements.join('');
+        next = substitutions[nextIndex];
+        var nextSub = String(next);
+        stringElements.push(nextSub);
+        nextIndex = nextIndex + 1;
+      }
+    });
+
+  // See https://githib.com/inexorabletash/uate for a more useful version.
+
+  // 21.1.3 Properties of the String Prototype Object
+  // 21.1.3.1 String.prototype.charAt ( pos )
+  // 21.1.3.2 String.prototype.charCodeAt ( pos )
+
+  // 21.1.3.3 String.prototype.codePointAt ( pos )
+  define(
+    String.prototype, 'codePointAt',
+    function codePointAt(pos) {
+      var o = strict(this);
+      var s = String(o);
+      var position = ToInteger(pos);
+      var size = s.length;
+      if (position < 0 || position >= size) return undefined;
+      var first = s.charCodeAt(position);
+      if (first < 0xD800 || first > 0xDBFF || position + 1 === size) return first;
+      var second = s.charCodeAt(position + 1);
+      if (second < 0xDC00 || second > 0xDFFF) return first;
+      return ((first - 0xD800) * 1024) + (second - 0xDC00) + 0x10000;
+    });
+
+  // 21.1.3.4 String.prototype.concat ( ...args )
+  // 21.1.3.5 String.prototype.constructor
+
+  // 21.1.3.6 String.prototype.endsWith ( searchString [ , endPosition] )
+  define(
+    String.prototype, 'endsWith',
+    function endsWith(searchString) {
+      var endPosition = arguments[1];
+
+      var o = strict(this);
+      var s = String(o);
+      var searchStr = String(searchString);
+      var len = s.length;
+      var pos = (endPosition === undefined) ? len : ToInteger(endPosition);
+      var end = min(max(pos, 0), len);
+      var searchLength = searchStr.length;
+      var start = end - searchLength;
+      if (start < 0) return false;
+      if (s.substring(start, start + searchLength) === searchStr) return true;
+      return false;
+    });
+
+  // 21.1.3.7 String.prototype.includes ( searchString [ , position ] )
+  define(
+    String.prototype, 'includes',
+    function includes(searchString) {
+      var position = arguments[1];
+
+      var o = strict(this);
+      var s = String(o);
+      var searchStr = String(searchString);
+      var pos = ToInteger(position);
+      var len = s.length;
+      var start = min(max(pos, 0), len);
+      return s.indexOf(searchStr, start) !== -1;
+    });
+
+  // 21.1.3.8 String.prototype.indexOf ( searchString [ , position ] )
+  // 21.1.3.9 String.prototype.lastIndexOf ( searchString [ , position ] )
+  // 21.1.3.10 String.prototype.localeCompare ( that [, reserved1 [ , reserved2 ] ] )
+  // 21.1.3.11 String.prototype.match ( regexp )
+  define(
+    String.prototype, 'match',
+    function match(regexp) {
+      var o = strict(this);
+      var s = String(o);
+      if (HasProperty(regexp, $$match)) var rx = regexp;
+      else rx = new RegExp(regexp);
+      return rx[$$match](s);
+    }, !string_regexp_dispatch);
+
+  // 21.1.3.12 String.prototype.normalize ( [ form ] )
+
+  // Not practical due to table sizes; if needed, pull in:
+  // https://github.com/walling/unorm/
+
+  // 21.1.3.13 String.prototype.repeat ( count )
+  define(
+    String.prototype, 'repeat',
+    function repeat(count) {
+      var o = strict(this);
+      var s = String(o);
+      var n = ToInteger(count);
+      if (n < 0) throw RangeError();
+      if (n === Infinity) throw RangeError();
+      var t = new Array(n + 1).join(s);
+      return t;
+    });
+
+  // 21.1.3.14 String.prototype.replace (searchValue, replaceValue )
+  define(
+    String.prototype, 'replace',
+    function replace(searchValue, replaceValue) {
+      var o = strict(this);
+      if (HasProperty(searchValue, $$replace))
+        return searchValue[$$replace](o, replaceValue);
+      return orig_replace.call(o, searchValue, replaceValue);
+    }, !string_regexp_dispatch);
+
+  // 21.1.3.15 String.prototype.search ( regexp )
+  define(
+    String.prototype, 'search',
+    function search(regexp) {
+      var o = strict(this);
+      var string = String(o);
+      if (HasProperty(regexp, $$search)) var rx = regexp;
+      else rx = new RegExp(regexp);
+      return rx[$$search](string);
+    }, !string_regexp_dispatch);
+
+  // 21.1.3.16 String.prototype.slice ( start, end )
+  // 21.1.3.17 String.prototype.split ( separator, limit )
+  define(
+    String.prototype, 'split',
+    function split(separator, limit) {
+      var o = strict(this);
+      if (HasProperty(separator, $$split))
+        return separator[$$split](o, limit);
+      return orig_split.call(o, separator, limit);
+    }, !string_regexp_dispatch);
+
+  // 21.1.3.18 String.prototype.startsWith ( searchString [, position ] )
+  define(
+    String.prototype, 'startsWith',
+    function startsWith(searchString) {
+      var position = arguments[1];
+
+      var o = strict(this);
+      var s = String(o);
+      var searchStr = String(searchString);
+      var pos = ToInteger(position);
+      var len = s.length;
+      var start = min(max(pos, 0), len);
+      var searchLength = searchStr.length;
+      if (searchLength + start > len) return false;
+      if (s.substring(start, start + searchLength) === searchStr) return true;
+      return false;
+    });
+
+  // 21.1.3.19 String.prototype.substring ( start, end )
+  // 21.1.3.20 String.prototype.toLocaleLowerCase ( [ reserved1 [ , reserved2 ] ] )
+  // 21.1.3.21 String.prototype.toLocaleUpperCase ([ reserved1 [ , reserved2 ] ] )
+  // 21.1.3.22 String.prototype.toLowerCase ( )
+  // 21.1.3.23 String.prototype.toString ( )
+  // 21.1.3.24 String.prototype.toUpperCase ( )
+  // 21.1.3.25 String.prototype.trim ( )
+  // 21.1.3.26 String.prototype.valueOf ( )
+
+  // 21.1.3.27 String.prototype [ @@iterator ]( )
+  define(
+    String.prototype, $$iterator,
+    function entries() {
+      return CreateStringIterator(this, 'value');
+    });
+
+  // 21.1.4 Properties of String Instances
+  // 21.1.4.1 length
+
+  // 21.1.5 String Iterator Objects
+  /** @constructor */
+  function StringIterator() {}
+
+  // 21.1.5.1 CreateStringIterator Abstract Operation
+  function CreateStringIterator(string, kind) {
+    var s = String(string);
+    var iterator = new StringIterator;
+    set_internal(iterator, '[[IteratedString]]', s);
+    set_internal(iterator, '[[StringIteratorNextIndex]]', 0);
+    set_internal(iterator, '[[StringIterationKind]]', kind);
+    return iterator;
+  }
+
+  // 21.1.5.2 The %StringIteratorPrototype% Object
+  var $StringIteratorPrototype$ = Object.create($IteratorPrototype$);
+  StringIterator.prototype = $StringIteratorPrototype$;
+
+  // 21.1.5.2.1 %StringIteratorPrototype%.next ( )
+  define(
+    $StringIteratorPrototype$, 'next',
+    function next() {
+      var o = ToObject(this);
+      var s = String(o['[[IteratedString]]']),
+          index = o['[[StringIteratorNextIndex]]'],
+          len = s.length;
+      if (index >= len) {
+        set_internal(o, '[[StringIteratorNextIndex]]', Infinity);
+        return CreateIterResultObject(undefined, true);
+      }
+      var cp = s.codePointAt(index);
+      set_internal(o, '[[StringIteratorNextIndex]]', index + (cp > 0xFFFF ? 2 : 1));
+      return CreateIterResultObject(String.fromCodePoint(cp), false);
+    });
+
+  // 21.1.5.2.2 %StringIteratorPrototype% [ @@toStringTag ]
+  define($StringIteratorPrototype$, $$toStringTag, 'String Iterator');
+
+  // 21.1.5.3 Properties of String Iterator Instances
+
+  // ---------------------------------------
+  // 21.2 RegExp (Regular Expression) Objects
+  // ---------------------------------------
+
+  // 21.2.1 Patterns
+  // 21.2.2 Pattern Semantics
+  // 21.2.2.1 Notation
+  // 21.2.2.2 Pattern
+  // 21.2.2.3 Disjunction
+  // 21.2.2.4 Alternative
+  // 21.2.2.5 Term
+  // 21.2.2.6 Assertion
+  // 21.2.2.7 Quantifier
+  // 21.2.2.8 Atom
+  // 21.2.2.9 AtomEscape
+  // 21.2.2.10 CharacterEscape
+  // 21.2.2.11 DecimalEscape
+  // 21.2.2.12 CharacterClassEscape
+  // 21.2.2.13 CharacterClass
+  // 21.2.2.14 ClassRanges
+  // 21.2.2.15 NonemptyClassRanges
+  // 21.2.2.16 NonemptyClassRangesNoDash
+  // 21.2.2.17 ClassAtom
+  // 21.2.2.18 ClassAtomNoDash
+  // 21.2.2.19 ClassEscape
+  // 21.2.3 The RegExp Constructor
+  // 21.2.3.1 RegExp ( pattern, flags )
+  // 21.2.3.2 new RegExp( ...argumentsList )
+  // 21.2.3.3 Abstract Operations for the RegExp Constructor
+  // 21.2.4 Properties of the RegExp Constructor
+  // 21.2.4.1 RegExp.prototype
+  // 21.2.5 Properties of the RegExp Prototype Object
+  // 21.2.5.1 RegExp.prototype.constructor
+  // 21.2.5.2 RegExp.prototype.exec ( string )
+
+  // 21.2.5.3 get RegExp.prototype.flags
+  if (!('flags' in RegExp.prototype)) {
+    Object.defineProperty(
+      RegExp.prototype, 'flags', {
+        get: function() {
+          var s = String(this);
+          return s.substring(s.lastIndexOf('/') + 1);
+        }
+      });
+  }
+
+  // 21.2.5.4 get RegExp.prototype.global
+  // 21.2.5.5 get RegExp.prototype.ignoreCase
+
+  // 21.2.5.6 RegExp.prototype [ @@match ] ( string )
+  define(RegExp.prototype, $$match, function(string) {
+    var o = strict(this);
+    return orig_match.call(string, o);
+  });
+
+  // 21.2.5.7 get RegExp.prototype.multiline
+
+  // 21.2.5.8 RegExp.prototype [ @@replace ] ( string, replaceValue )
+  define(RegExp.prototype, $$replace, function(string, replaceValue) {
+    var o = strict(this);
+    return orig_replace.call(string, o, replaceValue);
+  });
+
+  // 21.2.5.9 RegExp.prototype [ @@search ] ( string )
+  define(RegExp.prototype, $$search, function(string) {
+    var o = strict(this);
+    return orig_search.call(string, o);
+  });
+
+  // 21.2.5.10 get RegExp.prototype.source
+
+  // 21.2.5.11 RegExp.prototype [ @@split ] ( string, limit )
+  define(RegExp.prototype, $$split, function(string, limit) {
+    var o = strict(this);
+    return orig_split.call(string, o, limit);
+  });
+
+  // 21.2.5.12 get RegExp.prototype.sticky
+  // 21.2.5.13 RegExp.prototype.test( S )
+  // 21.2.5.14 RegExp.prototype.toString ( )
+  // 21.2.5.15 get RegExp.prototype.unicode
+
+  // 21.2.6 Properties of RegExp Instances
+  // 21.2.6.1 lastIndex
+
+  // (No polyfillable changes from ES5)
+
+  // ---------------------------------------
+  // 22 Indexed Collections
+  // ---------------------------------------
+
+  // ---------------------------------------
+  // 22.1 Array Objects
+  // ---------------------------------------
+
+  // 22.1.1 The Array Constructor
+  // 22.1.1.1 Array ( )
+  // 22.1.1.2 Array (len)
+  // 22.1.1.3 Array (...items )
+
+  // 22.1.2 Properties of the Array Constructor
+
+  // 22.1.2.1 Array.from ( items [ , mapfn [ , thisArg ] ] )
+  define(
+    Array, 'from',
+    function from(items) {
+      var mapfn = arguments[1];
+      var thisArg = arguments[2];
+
+      var c = strict(this);
+      if (mapfn === undefined) {
+        var mapping = false;
+      } else {
+        if (!IsCallable(mapfn)) throw TypeError();
+        var t = thisArg;
+        mapping = true;
+      }
+      var usingIterator = GetMethod(items, $$iterator);
+      if (usingIterator !== undefined) {
+         if (IsConstructor(c)) {
+          var a = new c();
+        } else {
+          a = new Array(0);
+        }
+        var iterator = GetIterator(items, usingIterator);
+        var k = 0;
+        while (true) {
+          var next = IteratorStep(iterator);
+          if (next === false) {
+            a.length = k;
+            return a;
+          }
+          var nextValue = IteratorValue(next);
+          if (mapping)
+            var mappedValue = mapfn.call(t, nextValue);
+          else
+            mappedValue = nextValue;
+          a[k] = mappedValue;
+          k += 1;
+        }
+      }
+      var arrayLike = ToObject(items);
+      var lenValue = arrayLike.length;
+      var len = ToLength(lenValue);
+      if (IsConstructor(c)) {
+        a = new c(len);
+      } else {
+        a = new Array(len);
+      }
+      k = 0;
+      while (k < len) {
+        var kValue = arrayLike[k];
+        if (mapping)
+          mappedValue = mapfn.call(t, kValue, k);
+        else
+          mappedValue = kValue;
+        a[k] = mappedValue;
+        k += 1;
+      }
+      a.length = len;
+      return a;
+    });
+
+  // 22.1.2.2 Array.isArray ( arg )
+
+  // 22.1.2.3 Array.of ( ...items )
+  define(
+    Array, 'of',
+    function of() {
+      var items = arguments;
+
+      var lenValue = items.length;
+      var len = ToUint32(lenValue);
+      var c = strict(this), a;
+      if (IsConstructor(c)) {
+        a = new c(len);
+        a = ToObject(a);
+      } else {
+        a = new Array(len);
+      }
+      var k = 0;
+      while (k < len) {
+        a[k] = items[k];
+        k += 1;
+      }
+      a.length = len;
+      return a;
+    });
+
+  // 22.1.2.4 Array.prototype
+  // 22.1.2.5 get Array [ @@species ]
+  // 22.1.3 Properties of the Array Prototype Object
+  // 22.1.3.1 Array.prototype.concat ( ...arguments )
+  // 22.1.3.1.1 Runtime Semantics: IsConcatSpreadable ( O )
+  // 22.1.3.2 Array.prototype.constructor
+  // 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] )
+  define(
+    Array.prototype, 'copyWithin',
+    function copyWithin(target, start/*, end*/) {
+      var end = arguments[2];
+
+      var o = ToObject(this);
+      var lenVal = o.length;
+      var len = ToLength(lenVal);
+      len = max(len, 0);
+      var relativeTarget = ToInteger(target);
+      var to;
+      if (relativeTarget < 0)
+        to = max(len + relativeTarget, 0);
+      else
+        to = min(relativeTarget, len);
+      var relativeStart = ToInteger(start);
+      var from;
+      if (relativeStart < 0)
+        from = max(len + relativeStart, 0);
+      else
+        from = min(relativeStart, len);
+      var relativeEnd;
+      if (end === undefined)
+        relativeEnd = len;
+      else
+        relativeEnd = ToInteger(end);
+      var final;
+      if (relativeEnd < 0)
+        final = max(len + relativeEnd, 0);
+      else
+        final = min(relativeEnd, len);
+      var count = min(final - from, len - to);
+      var direction;
+      if (from < to && to < from + count) {
+        direction = -1;
+        from = from + count - 1;
+        to = to + count - 1;
+      } else {
+        direction = 1;
+      }
+      while (count > 0) {
+        var fromKey = String(from);
+        var toKey = String(to);
+        var fromPresent = HasProperty(o, fromKey);
+        if (fromPresent) {
+          var fromVal = o[fromKey];
+          o[toKey] = fromVal;
+        } else {
+          delete o[toKey];
+        }
+        from = from + direction;
+        to = to + direction;
+        count = count - 1;
+      }
+      return o;
+    });
+
+  // 22.1.3.4 Array.prototype.entries ( )
+  var nativeArrayIteratorMethods =
+        ('entries' in Array.prototype && 'next' in [].entries());
+
+  define(
+    Array.prototype, 'entries',
+    function entries() {
+      return CreateArrayIterator(this, 'key+value');
+    }, !nativeArrayIteratorMethods);
+
+  // 22.1.3.5 Array.prototype.every ( callbackfn [ , thisArg] )
+
+  // 22.1.3.6 Array.prototype.fill (value [ , start [ , end ] ] )
+  define(
+    Array.prototype, 'fill',
+    function fill(value/*, start, end*/) {
+      var start = arguments[1],
+          end = arguments[2];
+
+      var o = ToObject(this);
+      var lenVal = o.length;
+      var len = ToLength(lenVal);
+      len = max(len, 0);
+      var relativeStart = ToInteger(start);
+      var k;
+      if (relativeStart < 0)
+        k = max((len + relativeStart), 0);
+      else
+        k = min(relativeStart, len);
+      var relativeEnd;
+      if (end === undefined)
+        relativeEnd = len;
+      else
+        relativeEnd = ToInteger(end);
+      var final;
+      if (relativeEnd < 0)
+        final = max((len + relativeEnd), 0);
+      else
+        final = min(relativeEnd, len);
+      while (k < final) {
+        var pk = String(k);
+        o[pk] = value;
+        k += 1;
+      }
+      return o;
+    });
+
+  // 22.1.3.7 Array.prototype.filter ( callbackfn [ , thisArg ] )
+
+  // 22.1.3.8 Array.prototype.find ( predicate [ , thisArg ] )
+  define(
+    Array.prototype, 'find',
+    function find(predicate) {
+      var o = ToObject(this);
+      var lenValue = o.length;
+      var len = ToInteger(lenValue);
+      if (!IsCallable(predicate)) throw TypeError();
+      var t = arguments.length > 1 ? arguments[1] : undefined;
+      var k = 0;
+      while (k < len) {
+        var pk = String(k);
+        var kPresent = HasProperty(o, pk);
+        if (kPresent) {
+          var kValue = o[pk];
+          var testResult = predicate.call(t, kValue, k, o);
+          if (Boolean(testResult)) {
+            return kValue;
+          }
+        }
+        ++k;
+      }
+      return undefined;
+    });
+
+  // 22.1.3.9 Array.prototype.findIndex ( predicate [ , thisArg ] )
+  define(
+    Array.prototype, 'findIndex',
+    function findIndex(predicate) {
+      var o = ToObject(this);
+      var lenValue = o.length;
+      var len = ToLength(lenValue);
+      if (!IsCallable(predicate)) throw TypeError();
+      var t = arguments.length > 1 ? arguments[1] : undefined;
+      var k = 0;
+      while (k < len) {
+        var pk = String(k);
+        var kPresent = HasProperty(o, pk);
+        if (kPresent) {
+          var kValue = o[pk];
+          var testResult = predicate.call(t, kValue, k, o);
+          if (Boolean(testResult)) {
+            return k;
+          }
+        }
+        ++k;
+      }
+      return -1;
+    });
+
+  // 22.1.3.10 Array.prototype.forEach ( callbackfn [ , thisArg ] )
+  // 22.1.3.11 Array.prototype.indexOf ( searchElement [ , fromIndex ] )
+  // 22.1.3.12 Array.prototype.join (separator)
+
+  // 22.1.3.13 Array.prototype.keys ( )
+  define(
+    Array.prototype, 'keys',
+    function keys() {
+      return CreateArrayIterator(this, 'key');
+    }, !nativeArrayIteratorMethods);
+
+  // 22.1.3.14 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
+  // 22.1.3.15 Array.prototype.map ( callbackfn [ , thisArg ] )
+  // 22.1.3.16 Array.prototype.pop ( )
+  // 22.1.3.17 Array.prototype.push ( ...items )
+  // 22.1.3.18 Array.prototype.reduce ( callbackfn [ , initialValue ] )
+  // 22.1.3.19 Array.prototype.reduceRight ( callbackfn [ , initialValue ] )
+  // 22.1.3.20 Array.prototype.reverse ( )
+  // 22.1.3.21 Array.prototype.shift ( )
+  // 22.1.3.22 Array.prototype.slice (start, end)
+  // 22.1.3.23 Array.prototype.some ( callbackfn [ , thisArg ] )
+  // 22.1.3.24 Array.prototype.sort (comparefn)
+  // 22.1.3.25 Array.prototype.splice (start, deleteCount , ...items )
+  // 22.1.3.26 Array.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
+  // 22.1.3.27 Array.prototype.toString ( )
+  // 22.1.3.28 Array.prototype.unshift ( ...items )
+
+  // 22.1.3.29 Array.prototype.values ( )
+  define(
+    Array.prototype, 'values',
+    function values() {
+      return CreateArrayIterator(this, 'value');
+    }, !nativeArrayIteratorMethods);
+
+  // 22.1.3.30 Array.prototype [ @@iterator ] ( )
+  define(
+    Array.prototype, $$iterator,
+    Array.prototype.values
+    );
+
+  // 22.1.3.31 Array.prototype [ @@unscopables ]
+  // 22.1.4 Properties of Array Instances
+  // 22.1.4.1 length
+
+  // 22.1.5 Array Iterator Objects
+  function ArrayIterator() {}
+
+  // 22.1.5.1 CreateArrayIterator Abstract Operation
+  function CreateArrayIterator(array, kind) {
+    var o = ToObject(array);
+    var iterator = new ArrayIterator;
+    set_internal(iterator, '[[IteratedObject]]', o);
+    set_internal(iterator, '[[ArrayIteratorNextIndex]]', 0);
+    set_internal(iterator, '[[ArrayIterationKind]]', kind);
+    return iterator;
+  }
+
+  // 22.1.5.2 The %ArrayIteratorPrototype% Object
+  var $ArrayIteratorPrototype$ = Object.create($IteratorPrototype$);
+  ArrayIterator.prototype = $ArrayIteratorPrototype$;
+
+  // 22.1.5.2.1 %ArrayIteratorPrototype%. next( )
+  define(
+    $ArrayIteratorPrototype$, 'next',
+    function next() {
+      var o = strict(this);
+      if (Type(o) !== 'object') throw TypeError();
+      var a = o['[[IteratedObject]]'],
+          index = o['[[ArrayIteratorNextIndex]]'],
+          itemKind = o['[[ArrayIterationKind]]'],
+          lenValue = a.length,
+          len = ToUint32(lenValue),
+          elementKey,
+          elementValue;
+      if (itemKind.indexOf('sparse') !== -1) {
+        var found = false;
+        while (!found && index < len) {
+          elementKey = String(index);
+          found = HasProperty(a, elementKey);
+          if (!found) {
+            index += 1;
+          }
+        }
+      }
+      if (index >= len) {
+        set_internal(o, '[[ArrayIteratorNextIndex]]', Infinity);
+        return CreateIterResultObject(undefined, true);
+      }
+      elementKey = index;
+      set_internal(o, '[[ArrayIteratorNextIndex]]', index + 1);
+      if (itemKind.indexOf('value') !== -1)
+        elementValue = a[elementKey];
+      if (itemKind.indexOf('key+value') !== -1)
+        return CreateIterResultObject([elementKey, elementValue], false);
+      if (itemKind.indexOf('key') !== -1)
+        return CreateIterResultObject(elementKey, false);
+      if (itemKind === 'value')
+        return CreateIterResultObject(elementValue, false);
+      throw Error('Internal error');
+    });
+
+  // 22.1.5.2.2 %ArrayIteratorPrototype% [ @@toStringTag ]
+  define($ArrayIteratorPrototype$, $$toStringTag, 'Array Iterator');
+
+  // 22.1.5.3 Properties of Array Iterator Instances
+
+
+  // ---------------------------------------
+  // 22.2 TypedArray Objects
+  // ---------------------------------------
+
+  // See typedarray.js for TypedArray polyfill
+
+  ['Int8Array', 'Uint8Array', 'Uint8ClampedArray',
+   'Int16Array', 'Uint16Array',
+   'Int32Array', 'Uint32Array',
+   'Float32Array', 'Float64Array'].forEach(function ($TypedArrayName$) {
+     if (!($TypedArrayName$ in global))
+       return;
+     var $TypedArray$ = global[$TypedArrayName$];
+
+     // 22.2.1 The %TypedArray% Intrinsic Object
+     // 22.2.1.1 %TypedArray% ( length )
+     // 22.2.1.2 %TypedArray% ( typedArray )
+     // 22.2.1.3 %TypedArray% ( object )
+     // 22.2.1.4 %TypedArray% ( buffer [ , byteOffset [ , length ] ] )
+     // 22.2.1.5 %TypedArray% ( all other argument combinations )
+     // 22.2.2 Properties of the %TypedArray% Intrinsic Object
+
+     // 22.2.2.1 %TypedArray%.from ( source [ , mapfn [ , thisArg ] ] )
+     define(
+       $TypedArray$, 'from',
+       function from(source) {
+         var mapfn = arguments[1];
+         var thisArg = arguments[2];
+
+         var c = strict(this);
+         if (!IsConstructor(c)) throw TypeError();
+         if (mapfn === undefined) {
+           var mapping = false;
+         } else {
+           if (IsCallable(mapfn)) throw TypeError();
+           var t = thisArg;
+           mapping = true;
+         }
+         var usingIterator = GetMethod(source, $$iterator);
+         if (usingIterator !== undefined) {
+           var iterator = GetIterator(source, usingIterator);
+           var values = [];
+           var next = true;
+           while (next !== false) {
+             next = IteratorStep(iterator);
+             if (next !== false) {
+               var nextValue = IteratorValue(next);
+               values.push(nextValue);
+             }
+           }
+           var len = values.length;
+           var newObj = new c(len);
+           var k = 0;
+           while (k < len) {
+             var kValue = values.shift();
+             if (mapping) {
+               var mappedValue = mapfn.call(t, kValue);
+             } else {
+               mappedValue = kValue;
+             }
+             newObj[k] = mappedValue;
+             ++k;
+           }
+           console.assert(values.length === 0);
+           return newObj;
+         }
+         var arrayLike = ToObject(source);
+         var lenValue = arrayLike.length;
+         len = ToLength(lenValue);
+         newObj = new c(len);
+         k = 0;
+         while (k < len) {
+           kValue = arrayLike[k];
+           if (mapping) {
+             mappedValue = mapfn.call(t, kValue, k);
+           } else {
+             mappedValue = kValue;
+           }
+           newObj[k] = mappedValue;
+           ++k;
+         }
+         return newObj;
+       });
+
+     // 22.2.2.2 %TypedArray%.of ( ...items )
+     define(
+       $TypedArray$, 'of',
+       function of() {
+         var items = arguments;
+
+         var len = items.length;
+         var c = strict(this);
+         var newObj = new c(len);
+         var k = 0;
+         while (k < len) {
+           newObj[k] = items[k];
+           ++k;
+         }
+         return newObj;
+       });
+
+     // 22.2.2.3 %TypedArray%.prototype
+     // 22.2.2.4 get %TypedArray% [ @@species ]
+     // 22.2.3 Properties of the %TypedArrayPrototype% Object
+     // 22.2.3.1 get %TypedArray%.prototype.buffer
+     // 22.2.3.2 get %TypedArray%.prototype.byteLength
+     // 22.2.3.3 get %TypedArray%.prototype.byteOffset
+     // 22.2.3.4 %TypedArray%.prototype.constructor
+
+     // 22.2.3.5 %TypedArray%.prototype.copyWithin (target, start [, end ] )
+     define($TypedArray$.prototype, 'copyWithin', Array.prototype.copyWithin);
+
+     // 22.2.3.6 %TypedArray%.prototype.entries ( )
+     define($TypedArray$.prototype, 'entries', Array.prototype.entries);
+
+     // 22.2.3.7 %TypedArray%.prototype.every ( callbackfn [ , thisArg ] )
+     define($TypedArray$.prototype, 'every', Array.prototype.every);
+
+     // 22.2.3.8 %TypedArray%.prototype.fill (value [ , start [ , end ] ] )
+     define(
+       $TypedArray$.prototype, 'fill',
+       //Array.prototype.fill // Doesn't work in Safari 7
+       function fill(value/*, start, end*/) {
+         var start = arguments[1],
+             end = arguments[2];
+
+         var o = ToObject(this);
+         var lenVal = o.length;
+         var len = ToLength(lenVal);
+         len = max(len, 0);
+         var relativeStart = ToInteger(start);
+         var k;
+         if (relativeStart < 0) k = max((len + relativeStart), 0);
+         else k = min(relativeStart, len);
+         var relativeEnd;
+         if (end === undefined) relativeEnd = len;
+         else relativeEnd = ToInteger(end);
+         var final;
+         if (relativeEnd < 0) final = max((len + relativeEnd), 0);
+         else final = min(relativeEnd, len);
+         while (k < final) {
+           var pk = String(k);
+           o[pk] = value;
+           k += 1;
+         }
+         return o;
+       });
+
+     // 22.2.3.9 %TypedArray%.prototype.filter ( callbackfn [ , thisArg ] )
+     define(
+       $TypedArray$.prototype, 'filter',
+       function filter(callbackfn) {
+         var thisArg = arguments[1];
+
+         var o = ToObject(this);
+         var lenVal = o.length;
+         var len = ToLength(lenVal);
+         if (!IsCallable(callbackfn)) throw TypeError();
+         var t = thisArg;
+         var c = o.constructor;
+         var kept = [];
+         var k = 0;
+         var captured = 0;
+         while (k < len) {
+           var kValue = o[k];
+           var selected = callbackfn.call(t, kValue, k, o);
+           if (selected) {
+             kept.push(kValue);
+             ++captured;
+           }
+           ++k;
+         }
+         var a = new c(captured);
+         var n = 0;
+         for (var i = 0; i < kept.length; ++i) {
+           var e = kept[i];
+           a[n] = e;
+           ++n;
+         }
+         return a;
+       });
+
+     // 22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
+     define($TypedArray$.prototype, 'find', Array.prototype.find);
+
+     // 22.2.3.11 %TypedArray%.prototype.findIndex ( predicate [ , thisArg ] )
+     define($TypedArray$.prototype, 'findIndex', Array.prototype.findIndex);
+
+     // 22.2.3.12 %TypedArray%.prototype.forEach ( callbackfn [ , thisArg ] )
+     define($TypedArray$.prototype, 'forEach', Array.prototype.forEach);
+
+     // 22.2.3.13 %TypedArray%.prototype.indexOf (searchElement [ , fromIndex ] )
+     define($TypedArray$.prototype, 'indexOf', Array.prototype.indexOf);
+
+     // 22.2.3.14 %TypedArray%.prototype.join ( separator )
+     define($TypedArray$.prototype, 'join', Array.prototype.join);
+
+     // 22.2.3.15 %TypedArray%.prototype.keys ( )
+     define($TypedArray$.prototype, 'keys', Array.prototype.keys);
+
+     // 22.2.3.16 %TypedArray%.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
+     define($TypedArray$.prototype, 'lastIndexOf', Array.prototype.lastIndexOf);
+
+     // 22.2.3.17 get %TypedArray%.prototype.length
+
+     // 22.2.3.18 %TypedArray%.prototype.map ( callbackfn [ , thisArg ] )
+     define(
+       $TypedArray$.prototype, 'map',
+       function map(callbackfn) {
+         var thisArg = arguments[1];
+
+         var o = ToObject(this);
+         var lenValue = o.length;
+         var len = ToLength(lenValue);
+         if (!IsCallable(callbackfn)) throw TypeError();
+         var t = thisArg;
+         var a = undefined;
+         var c = o.constructor;
+         if (IsConstructor(c))
+           a = new c(len);
+         if (a === undefined)
+           a = new Array(len);
+         var k = 0;
+         while (k < len) {
+           var kPresent = HasProperty(o, k);
+           if (kPresent) {
+             var kValue = o[k];
+             var mappedValue = callbackfn.call(t, kValue, k, o);
+             a[k] = mappedValue;
+           }
+           ++k;
+         }
+         return a;
+       });
+
+     // 22.2.3.19 %TypedArray%.prototype.reduce ( callbackfn [, initialValue] )
+     define($TypedArray$.prototype, 'reduce', Array.prototype.reduce);
+
+     // 22.2.3.20 %TypedArray%.prototype.reduceRight ( callbackfn [, initialValue] )
+     define($TypedArray$.prototype, 'reduceRight', Array.prototype.reduceRight);
+
+     // 22.2.3.21 %TypedArray%.prototype.reverse ( )
+     define($TypedArray$.prototype, 'reverse', Array.prototype.reverse);
+
+     // 22.2.3.22 %TypedArray%.prototype.set ( overloaded [ , offset ])
+     // 22.2.3.22.1 %TypedArray%.prototype.set (array [ , offset ] )
+     // 22.2.3.22.2 %TypedArray%.prototype.set(typedArray [, offset ] )
+
+     // 22.2.3.23 %TypedArray%.prototype.slice ( start, end )
+     define(
+       $TypedArray$.prototype, 'slice',
+       function slice(start, end) {
+         var o = ToObject(this);
+         var lenVal = o.length;
+         var len = ToLength(lenVal);
+         var relativeStart = ToInteger(start);
+         var k = (relativeStart < 0) ? max(len + relativeStart, 0) : min(relativeStart, len);
+         var relativeEnd = (end === undefined) ? len : ToInteger(end);
+         var final = (relativeEnd < 0) ? max(len + relativeEnd, 0) : min(relativeEnd, len);
+         var count = final - k;
+         var c = o.constructor;
+         if (IsConstructor(c)) {
+           var a = new c(count);
+         } else {
+           throw TypeError();
+         }
+         var n = 0;
+         while (k < final) {
+           var kValue = o[k];
+           a[n] = kValue;
+           ++k;
+           ++n;
+         }
+         return a;
+       });
+
+     // 22.2.3.24 %TypedArray%.prototype.some ( callbackfn [ , thisArg ] )
+     define($TypedArray$.prototype, 'some', Array.prototype.some);
+
+     // 22.2.3.25 %TypedArray%.prototype.sort ( comparefn )
+     define(
+       $TypedArray$.prototype, 'sort',
+       function sort() {
+         var comparefn = arguments[0];
+
+         function sortCompare(x, y) {
+           console.assert(Type(x) === 'number' && Type(y) === 'number');
+           if (x !== x && y !== y) return +0;
+           if (x !== x) return 1;
+           if (y !== y) return -1;
+           if (comparefn !== undefined) {
+             return comparefn(x, y);
+           }
+           if (x < y) return -1;
+           if (x > y) return 1;
+           return +0;
+         }
+         return Array.prototype.sort.call(this, sortCompare);
+       });
+
+     // 22.2.3.26 %TypedArray%.prototype.subarray( [ begin [ , end ] ] )
+     // 22.2.3.27 %TypedArray%.prototype.toLocaleString ([ reserved1 [ , reserved2 ] ])
+     // 22.2.3.28 %TypedArray%.prototype.toString ( )
+
+     // 22.2.3.29 %TypedArray%.prototype.values ( )
+     define($TypedArray$.prototype, 'values', Array.prototype.values);
+
+     // 22.2.3.30 %TypedArray%.prototype [ @@iterator ] ( )
+     define(
+       $TypedArray$.prototype, $$iterator,
+       $TypedArray$.prototype.values
+     );
+
+     // 22.2.3.31 get %TypedArray%.prototype [ @@toStringTag ]
+     define($TypedArray$.prototype, $$toStringTag, $TypedArrayName$);
+
+     // 22.2.4 The TypedArray Constructors
+     // 22.2.4.1TypedArray( ... argumentsList)
+     // 22.2.5 Properties of the TypedArray Constructors
+     // 22.2.5.1 TypedArray.BYTES_PER_ELEMENT
+     // 22.2.5.2 TypedArray.prototype
+     // 22.2.6 Properties of TypedArray Prototype Objects
+     // 22.2.6.1 TypedArray.prototype.BYTES_PER_ELEMENT
+     // 22.2.6.2 TypedArray.prototype.constructor
+     // 22.2.7 Properties of TypedArray Instances
+   });
+
+  // ---------------------------------------
+  // 23 Keyed Collection
+  // ---------------------------------------
+
+  // ---------------------------------------
+  // 23.1 Map Objects
+  // ---------------------------------------
+
+  (function() {
+    // 23.1.1 The Map Constructor
+
+    // 23.1.1.1 Map ( [ iterable ] )
+    /** @constructor */
+    function Map(/*iterable*/) {
+      var map = strict(this);
+      var iterable = arguments[0];
+
+      if (Type(map) !== 'object') throw TypeError();
+      if ('[[MapData]]' in map) throw TypeError();
+
+      if (iterable !== undefined) {
+        var adder = map['set'];
+        if (!IsCallable(adder)) throw TypeError();
+        var iter = GetIterator(ToObject(iterable));
+      }
+      set_internal(map, '[[MapData]]', { keys: [], values: [] });
+      if (iter === undefined) return map;
+      while (true) {
+        var next = IteratorStep(iter);
+        if (next === false)
+          return map;
+        var nextItem = IteratorValue(next);
+        if (Type(nextItem) !== 'object') throw TypeError();
+        var k = nextItem[0];
+        var v = nextItem[1];
+        adder.call(map, k, v);
+      }
+
+      return map;
+    }
+
+    if (!('Map' in global) || OVERRIDE_NATIVE_FOR_TESTING ||
+        (function() { try { new global.Map([]); return false; } catch (_) { return true; } }()) ||
+        (function() { try { return !new global.Map().entries().next; } catch (_) { return true; } }()) ||
+        (new global.Map([['a', 1]]).size !== 1))
+      global.Map = Map;
+
+
+    function MapDataIndexOf(mapData, key) {
+      var i;
+      if (key === key) return mapData.keys.indexOf(key);
+      // Slow case for NaN
+      for (i = 0; i < mapData.keys.length; i += 1)
+        if (SameValueZero(mapData.keys[i], key)) return i;
+      return -1;
+    }
+
+    // 23.1.1.2 new Map ( ... argumentsList )
+    // 23.1.2 Properties of the Map Constructor
+    // 23.1.2.1 Map.prototype
+    var $MapPrototype$ = {};
+    Map.prototype = $MapPrototype$;
+
+    // 23.1.2.2 get Map [ @@species ]
+
+    // 23.1.3 Properties of the Map Prototype Object
+    // 23.1.3.1 Map.prototype.clear ()
+    define(
+      Map.prototype, 'clear',
+      function clear() {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+        entries.keys.length = 0;
+        entries.values.length = 0;
+        return undefined;
+      });
+
+    // 23.1.3.2 Map.prototype.constructor
+
+    // 23.1.3.3 Map.prototype.delete ( key )
+    define(
+      Map.prototype, 'delete',
+      function delete_(key) {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+        var i = MapDataIndexOf(entries, key);
+        if (i < 0) return false;
+        entries.keys[i] = empty;
+        entries.values[i] = empty;
+        return true;
+      });
+
+    // 23.1.3.4 Map.prototype.entries ( )
+    define(
+      Map.prototype, 'entries',
+      function entries() {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        return CreateMapIterator(m, 'key+value');
+      });
+
+    // 23.1.3.5 Map.prototype.forEach ( callbackfn [ , thisArg ] )
+    define(
+      Map.prototype, 'forEach',
+      function forEach(callbackfn /*, thisArg*/) {
+        var thisArg = arguments[1];
+
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+
+        if (!IsCallable(callbackfn)) {
+          throw TypeError('First argument to forEach is not callable.');
+        }
+        for (var i = 0; i < entries.keys.length; ++i) {
+          if (entries.keys[i] !== empty) {
+            callbackfn.call(thisArg, entries.values[i], entries.keys[i], m);
+          }
+        }
+        return undefined;
+      });
+
+    // 23.1.3.6 Map.prototype.get ( key )
+    define(
+      Map.prototype, 'get',
+      function get(key) {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+        var i = MapDataIndexOf(entries, key);
+        if (i >= 0) return entries.values[i];
+        return undefined;
+      });
+
+    // 23.1.3.7 Map.prototype.has ( key )
+    define(
+      Map.prototype, 'has',
+      function has(key) {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+        if (MapDataIndexOf(entries, key) >= 0) return true;
+        return false;
+      });
+
+    // 23.1.3.8 Map.prototype.keys ( )
+    define(
+      Map.prototype, 'keys',
+      function keys() {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        return CreateMapIterator(m, 'key');
+      });
+
+    // 23.1.3.9 Map.prototype.set ( key , value )
+    define(
+      Map.prototype, 'set',
+      function set(key, value) {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        if (!('[[MapData]]' in m)) throw TypeError();
+        if (m['[[MapData]]'] === undefined) throw TypeError();
+        var entries = m['[[MapData]]'];
+        var i = MapDataIndexOf(entries, key);
+        if (i < 0) i = entries.keys.length;
+        if (SameValue(key, -0)) key = 0;
+        entries.keys[i] = key;
+        entries.values[i] = value;
+        return m;
+      });
+
+    // 23.1.3.10 get Map.prototype.size
+    Object.defineProperty(
+      Map.prototype, 'size', {
+        get: function() {
+          var m = strict(this);
+          if (Type(m) !== 'object') throw TypeError();
+          if (!('[[MapData]]' in m)) throw TypeError();
+          if (m['[[MapData]]'] === undefined) throw TypeError();
+          var entries = m['[[MapData]]'];
+          var count = 0;
+          for (var i = 0; i < entries.keys.length; ++i) {
+            if (entries.keys[i] !== empty)
+              count = count + 1;
+          }
+          return count;
+        }
+      });
+
+    // 23.1.3.11 Map.prototype.values ( )
+    define(
+      Map.prototype, 'values',
+      function values() {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        return CreateMapIterator(m, 'value');
+      });
+
+    // 23.1.3.12 Map.prototype [ @@iterator ]( )
+    define(
+      Map.prototype, $$iterator,
+      function() {
+        var m = strict(this);
+        if (Type(m) !== 'object') throw TypeError();
+        return CreateMapIterator(m, 'key+value');
+      });
+
+    // 23.1.3.13 Map.prototype [ @@toStringTag ]
+    define(global.Map.prototype, $$toStringTag, 'Map');
+
+    // 23.1.4 Properties of Map Instances
+    // 23.1.5 Map Iterator Objects
+
+    /** @constructor */
+    function MapIterator() {}
+
+    // 23.1.5.1 CreateMapIterator Abstract Operation
+    function CreateMapIterator(map, kind) {
+      if (Type(map) !== 'object') throw TypeError();
+      if (!('[[MapData]]' in map)) throw TypeError();
+      if (map['[[MapData]]'] === undefined) throw TypeError();
+      var iterator = new MapIterator;
+      set_internal(iterator, '[[Map]]', map);
+      set_internal(iterator, '[[MapNextIndex]]', 0);
+      set_internal(iterator, '[[MapIterationKind]]', kind);
+      return iterator;
+    }
+
+    // 23.1.5.2 The %MapIteratorPrototype% Object
+    var $MapIteratorPrototype$ = Object.create($IteratorPrototype$);
+    MapIterator.prototype = $MapIteratorPrototype$;
+
+    // 23.1.5.2.1 %MapIteratorPrototype%.next ( )
+    define(
+      $MapIteratorPrototype$, 'next',
+      function next() {
+        var o = strict(this);
+        if (Type(o) !== 'object') throw TypeError();
+        var m = o['[[Map]]'],
+            index = o['[[MapNextIndex]]'],
+            itemKind = o['[[MapIterationKind]]'],
+            entries = m['[[MapData]]'];
+        while (index < entries.keys.length) {
+          var e = {key: entries.keys[index], value: entries.values[index]};
+          index = index += 1;
+          set_internal(o, '[[MapNextIndex]]', index);
+          if (e.key !== empty) {
+            if (itemKind === 'key') {
+              return CreateIterResultObject(e.key, false);
+            } else if (itemKind === 'value') {
+              return CreateIterResultObject(e.value, false);
+            } else {
+              return CreateIterResultObject([e.key, e.value], false);
+            }
+          }
+        }
+        return CreateIterResultObject(undefined, true);
+      });
+
+    // 23.1.5.2.2 %MapIteratorPrototype% [ @@toStringTag ]
+    define($MapIteratorPrototype$, $$toStringTag, 'Map Iterator');
+
+    // 23.1.5.3 Properties of Map Iterator Instances
+  }());
+
+  // ---------------------------------------
+  // 23.2 Set Objects
+  // ---------------------------------------
+
+  (function() {
+    // 23.2.1 The Set Constructor
+    // 23.2.1.1 Set ( [ iterable ] )
+
+    /** @constructor */
+    function Set(/*iterable*/) {
+      var set = strict(this);
+      var iterable = arguments[0];
+
+      if (Type(set) !== 'object') throw TypeError();
+      if ('[[SetData]]' in set) throw TypeError();
+
+      if (iterable !== undefined) {
+        var adder = set['add'];
+        if (!IsCallable(adder)) throw TypeError();
+        var iter = GetIterator(ToObject(iterable));
+      }
+      set_internal(set, '[[SetData]]', []);
+      if (iter === undefined) return set;
+      while (true) {
+        var next = IteratorStep(iter);
+        if (next === false)
+          return set;
+        var nextValue = IteratorValue(next);
+        adder.call(set, nextValue);
+      }
+
+      return set;
+    }
+
+    if (!('Set' in global) || OVERRIDE_NATIVE_FOR_TESTING ||
+        (function() { try { return !new global.Set().entries().next; } catch (_) { return true; } }()) ||
+        (new global.Set([1]).size !== 1))
+      global.Set = Set;
+
+    function SetDataIndexOf(setData, key) {
+      var i;
+      if (key === key)
+        return setData.indexOf(key);
+      // Slow case for NaN
+      for (i = 0; i < setData.length; i += 1)
+        if (SameValueZero(setData[i], key)) return i;
+      return -1;
+    }
+
+    // 23.2.1.2 new Set ( ...argumentsList )
+    // 23.2.2 Properties of the Set Constructor
+
+    // 23.2.2.1 Set.prototype
+    var $SetPrototype$ =  {};
+    Set.prototype = $SetPrototype$;
+
+    // 23.2.2.2 get Set [ @@species ]
+    // 23.2.3 Properties of the Set Prototype Object
+
+    // 23.2.3.1 Set.prototype.add (value )
+    define(
+      Set.prototype, 'add',
+      function add(value) {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        if (!('[[SetData]]' in s)) throw TypeError();
+        if (s['[[SetData]]'] === undefined) throw TypeError();
+        if (SameValue(value, -0)) value = 0;
+        var entries = s['[[SetData]]'];
+        var i = SetDataIndexOf(entries, value);
+        if (i < 0) i = s['[[SetData]]'].length;
+        s['[[SetData]]'][i] = value;
+
+        return s;
+      });
+
+    // 23.2.3.2 Set.prototype.clear ()
+    define(
+      Set.prototype, 'clear',
+      function clear() {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        if (!('[[SetData]]' in s)) throw TypeError();
+        if (s['[[SetData]]'] === undefined) throw TypeError();
+        var entries = s['[[SetData]]'];
+        entries.length = 0;
+        return undefined;
+      });
+
+    // 23.2.3.3 Set.prototype.constructor
+    // 23.2.3.4 Set.prototype.delete ( value )
+    define(
+      Set.prototype, 'delete',
+      function delete_(value) {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        if (!('[[SetData]]' in s)) throw TypeError();
+        if (s['[[SetData]]'] === undefined) throw TypeError();
+        var entries = s['[[SetData]]'];
+        var i = SetDataIndexOf(entries, value);
+        if (i < 0) return false;
+        entries[i] = empty;
+        return true;
+      });
+
+    // 23.2.3.5 Set.prototype.entries ( )
+    define(
+      Set.prototype, 'entries',
+      function entries() {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        return CreateSetIterator(s, 'key+value');
+      });
+
+    // 23.2.3.6 Set.prototype.forEach ( callbackfn [ , thisArg ] )
+    define(
+      Set.prototype, 'forEach',
+      function forEach(callbackfn/*, thisArg*/) {
+        var thisArg = arguments[1];
+
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        if (!('[[SetData]]' in s)) throw TypeError();
+        if (s['[[SetData]]'] === undefined) throw TypeError();
+        var entries = s['[[SetData]]'];
+
+        if (!IsCallable(callbackfn)) {
+          throw TypeError('First argument to forEach is not callable.');
+        }
+        for (var i = 0; i < entries.length; ++i) {
+          if (entries[i] !== empty) {
+            callbackfn.call(thisArg, entries[i], entries[i], s);
+          }
+        }
+      });
+
+    // 23.2.3.7 Set.prototype.has ( value )
+    define(
+      Set.prototype, 'has',
+      function has(key) {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        if (!('[[SetData]]' in s)) throw TypeError();
+        if (s['[[SetData]]'] === undefined) throw TypeError();
+        var entries = s['[[SetData]]'];
+        return SetDataIndexOf(entries, key) !== -1;
+      });
+
+    // 23.2.3.8 Set.prototype.keys ( )
+    // See Set.prototype.values
+
+    // 23.2.3.9 get Set.prototype.size
+    Object.defineProperty(
+      Set.prototype, 'size', {
+        get: function() {
+          var s = strict(this);
+          if (Type(s) !== 'object') throw TypeError();
+          if (!('[[SetData]]' in s)) throw TypeError();
+          if (s['[[SetData]]'] === undefined) throw TypeError();
+          var entries = s['[[SetData]]'];
+          var count = 0;
+          for (var i = 0; i < entries.length; ++i) {
+            if (entries[i] !== empty)
+              count = count + 1;
+          }
+          return count;
+        }
+      });
+
+    // 23.2.3.10 Set.prototype.values ( )
+    define(
+      Set.prototype, 'values',
+      function values() {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        return CreateSetIterator(s, 'value');
+      });
+    // NOTE: function name is still 'values':
+    Set.prototype.keys = Set.prototype.values;
+
+    // 23.2.3.11 Set.prototype [@@iterator ] ( )
+    define(
+      Set.prototype, $$iterator,
+      function() {
+        var s = strict(this);
+        if (Type(s) !== 'object') throw TypeError();
+        return CreateSetIterator(s);
+      });
+
+    // 23.2.3.12 Set.prototype [ @@toStringTag ]
+    define(global.Set.prototype, $$toStringTag, 'Set');
+
+    // 23.2.4 Properties of Set Instances
+    // 23.2.5 Set Iterator Objects
+    /** @constructor */
+    function SetIterator() {}
+
+    // 23.2.5.1 CreateSetIterator Abstract Operation
+    function CreateSetIterator(set, kind) {
+      if (Type(set) !== 'object') throw TypeError();
+      if (!('[[SetData]]' in set)) throw TypeError();
+      if (set['[[SetData]]'] === undefined) throw TypeError();
+      var iterator = new SetIterator;
+      set_internal(iterator, '[[IteratedSet]]', set);
+      set_internal(iterator, '[[SetNextIndex]]', 0);
+      set_internal(iterator, '[[SetIterationKind]]', kind);
+      return iterator;
+    }
+
+    // 23.2.5.2 The %SetIteratorPrototype% Object
+    var $SetIteratorPrototype$ = Object.create($IteratorPrototype$);
+    SetIterator.prototype = $SetIteratorPrototype$;
+
+    // 23.2.5.2.1 %SetIteratorPrototype%.next( )
+    define(
+      $SetIteratorPrototype$, 'next',
+      function next() {
+        var o = strict(this);
+        if (Type(o) !== 'object') throw TypeError();
+        var s = o['[[IteratedSet]]'],
+            index = o['[[SetNextIndex]]'],
+            itemKind = o['[[SetIterationKind]]'],
+            entries = s['[[SetData]]'];
+        while (index < entries.length) {
+          var e = entries[index];
+          index = index += 1;
+          set_internal(o, '[[SetNextIndex]]', index);
+          if (e !== empty) {
+            if (itemKind === 'key+value')
+              return CreateIterResultObject([e, e], false);
+            return CreateIterResultObject(e, false);
+          }
+        }
+        return CreateIterResultObject(undefined, true);
+      });
+
+    // 23.2.5.2.2 %SetIteratorPrototype% [ @@toStringTag ]
+    define($SetIteratorPrototype$, $$toStringTag, 'Set Iterator');
+
+    // 23.2.5.3 Properties of Set Iterator Instances
+
+  }());
+
+  // ---------------------------------------
+  // 23.3 WeakMap Objects
+  // ---------------------------------------
+
+  (function() {
+    // 23.3.1 The WeakMap Constructor
+    // 23.3.1.1 WeakMap ( [ iterable ] )
+    /** @constructor */
+    function WeakMap(/*iterable*/) {
+      var map = strict(this);
+      var iterable = arguments[0];
+
+      if (Type(map) !== 'object') throw TypeError();
+      if ('[[WeakMapData]]' in map) throw TypeError();
+
+      if (iterable !== undefined) {
+        var adder = map['set'];
+        if (!IsCallable(adder)) throw TypeError();
+        var iter = GetIterator(ToObject(iterable));
+      }
+      set_internal(map, '[[WeakMapData]]', new EphemeronTable);
+      if (iter === undefined) return map;
+      while (true) {
+        var next = IteratorStep(iter);
+        if (next === false)
+          return map;
+        var nextValue = IteratorValue(next);
+        if (Type(nextValue) !== 'object') throw TypeError();
+        var k = nextValue[0];
+        var v = nextValue[1];
+        adder.call(map, k, v);
+      }
+
+      return map;
+    }
+
+    if (!('WeakMap' in global) || OVERRIDE_NATIVE_FOR_TESTING)
+      global.WeakMap = WeakMap;
+
+    // 23.3.2 Properties of the WeakMap Constructor
+    // 23.3.2.1 WeakMap.prototype
+    var $WeakMapPrototype$ = {};
+    WeakMap.prototype = $WeakMapPrototype$;
+
+
+
+   // 23.3.2.2 WeakMap[ @@create ] ( )
+    // 23.3.3 Properties of the WeakMap Prototype Object
+
+    // 23.3.3.1 WeakMap.prototype.constructor
+
+    // 23.3.3.2 WeakMap.prototype.delete ( key )
+    define(
+      WeakMap.prototype, 'delete',
+      function delete_(key) {
+        var M = strict(this);
+        if (Type(M) !== 'object') throw TypeError();
+        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
+        if (Type(key) !== 'object') throw TypeError('Expected object');
+        return M['[[WeakMapData]]'].remove(key);
+      });
+
+    // 23.3.3.3 WeakMap.prototype.get ( key )
+    define(
+      WeakMap.prototype, 'get',
+      function get(key, defaultValue) {
+        var M = strict(this);
+        if (Type(M) !== 'object') throw TypeError();
+        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
+        if (Type(key) !== 'object') throw TypeError('Expected object');
+        return M['[[WeakMapData]]'].get(key, defaultValue);
+      });
+
+    // 23.3.3.4 WeakMap.prototype.has ( key )
+    define(
+      WeakMap.prototype, 'has',
+      function has(key) {
+        var M = strict(this);
+        if (Type(M) !== 'object') throw TypeError();
+        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
+        if (Type(key) !== 'object') throw TypeError('Expected object');
+        return M['[[WeakMapData]]'].has(key);
+      });
+
+    // 23.3.3.5 WeakMap.prototype.set ( key , value )
+    define(
+      WeakMap.prototype, 'set',
+      function set(key, value) {
+        var M = strict(this);
+        if (Type(M) !== 'object') throw TypeError();
+        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
+        if (Type(key) !== 'object') throw TypeError('Expected object');
+        M['[[WeakMapData]]'].set(key, value);
+        return M;
+      });
+
+    // 23.3.3.6 WeakMap.prototype [ @@toStringTag ]
+    define(global.WeakMap.prototype, $$toStringTag, 'WeakMap');
+
+    // 23.3.4 Properties of WeakMap Instances
+
+    // Polyfills for incomplete native implementations:
+    (function() {
+      var wm = new global.WeakMap();
+      var orig = global.WeakMap.prototype.set;
+      define(global.WeakMap.prototype, 'set', function set() {
+        orig.apply(this, arguments);
+        return this;
+      }, wm.set({}, 0) !== wm);
+    }());
+  }());
+
+  // ---------------------------------------
+  // 23.4 WeakSet Objects
+  // ---------------------------------------
+
+  (function() {
+    // 23.4.1 The WeakSet Constructor
+    // 23.4.1.1 WeakSet ( [ iterable ] )
+    /** @constructor */
+    function WeakSet(/*iterable*/) {
+      var set = strict(this);
+      var iterable = arguments[0];
+
+      if (Type(set) !== 'object') throw TypeError();
+      if ('[[WeakSetData]]' in set) throw TypeError();
+
+      if (iterable !== undefined) {
+        var adder = set['add'];
+        if (!IsCallable(adder)) throw TypeError();
+        var iter = GetIterator(ToObject(iterable));
+      }
+      set_internal(set, '[[WeakSetData]]', new EphemeronTable);
+      if (iter === undefined) return set;
+      while (true) {
+        var next = IteratorStep(iter);
+        if (next === false)
+          return set;
+        var nextValue = IteratorValue(next);
+        adder.call(set, nextValue);
+      }
+
+      return set;
+    }
+
+    if (!('WeakSet' in global) || OVERRIDE_NATIVE_FOR_TESTING)
+      global.WeakSet = WeakSet;
+
+    // 23.4.2 Properties of the WeakSet Constructor
+    // 23.4.2.1 WeakSet.prototype
+    var $WeakSetPrototype$ = {};
+    WeakSet.prototype = $WeakSetPrototype$;
+
+    // 23.4.3 Properties of the WeakSet Prototype Object
+    // 23.4.3.1 WeakSet.prototype.add (value )
+    define(
+      WeakSet.prototype, 'add',
+      function add(value) {
+        var S = strict(this);
+        if (Type(S) !== 'object') throw TypeError();
+        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
+        if (Type(value) !== 'object') throw TypeError('Expected object');
+        S['[[WeakSetData]]'].set(value, true);
+        return S;
+      });
+
+    // 23.4.3.2 WeakSet.prototype.constructor
+    // 23.4.3.3 WeakSet.prototype.delete ( value )
+    define(
+      WeakSet.prototype, 'delete',
+      function delete_(value) {
+        var S = strict(this);
+        if (Type(S) !== 'object') throw TypeError();
+        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
+        if (Type(value) !== 'object') throw TypeError('Expected object');
+        return S['[[WeakSetData]]'].remove(value);
+      });
+
+    // 23.4.3.4 WeakSet.prototype.has ( value )
+    define(
+      WeakSet.prototype, 'has',
+      function has(key) {
+        var S = strict(this);
+        if (Type(S) !== 'object') throw TypeError();
+        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
+        if (Type(key) !== 'object') throw TypeError('Expected object');
+        return S['[[WeakSetData]]'].has(key);
+      });
+
+    // 23.4.3.5 WeakSet.prototype [ @@toStringTag ]
+    define(global.WeakSet.prototype, $$toStringTag, 'WeakSet');
+
+    // 23.4.4 Properties of WeakSet Instances
+
+    // Polyfills for incomplete native implementations:
+    (function() {
+      var ws = new global.WeakSet();
+      var orig = global.WeakSet.prototype.add;
+      define(global.WeakSet.prototype, 'add', function add() {
+        orig.apply(this, arguments);
+        return this;
+      }, ws.add({}) !== ws);
+    }());
+  }());
+
+  // ---------------------------------------
+  // 24 Structured Data
+  // ---------------------------------------
+
+  // ---------------------------------------
+  // 24.1 ArrayBuffer Objects
+  // ---------------------------------------
+
+  // See typedarray.js for TypedArray polyfill
+
+  (function() {
+    if (!('ArrayBuffer' in global))
+      return;
+
+    // 24.1.1 Abstract Operations For ArrayBuffer Objects
+    // 24.1.1.1 AllocateArrayBuffer( constructor, byteLength )
+    // 24.1.1.2 IsDetachedBuffer( arrayBuffer )
+    // 24.1.1.3 DetachArrayBuffer( arrayBuffer )
+    // 24.1.1.4 CloneArrayBuffer( srcBuffer, srcByteOffset [, cloneConstructor] )
+    // 24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isLittleEndian )
+    // 24.1.1.6 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isLittleEndian )
+    // 24.1.2 The ArrayBuffer Constructor
+    // 24.1.2.1 ArrayBuffer( length )
+    // 24.1.3 Properties of the ArrayBuffer Constructor
+
+    // 24.1.3.1 ArrayBuffer.isView ( arg )
+    define(
+      ArrayBuffer, 'isView',
+      function isView(arg) {
+        if (Type(arg) !== 'object') return false;
+        if ('buffer' in arg && arg.buffer instanceof ArrayBuffer) return true;
+        return false;
+      });
+
+    // 24.1.3.2 ArrayBuffer.prototype
+    // 24.1.3.3 get ArrayBuffer [ @@species ]
+    // 24.1.4 Properties of the ArrayBuffer Prototype Object
+    // 24.1.4.1 get ArrayBuffer.prototype.byteLength
+    // 24.1.4.2 ArrayBuffer.prototype.constructor
+    // 24.1.4.3 ArrayBuffer.prototype.slice ( start , end)
+
+    // 24.1.4.4 ArrayBuffer.prototype [ @@toStringTag ]
+    define(ArrayBuffer.prototype, $$toStringTag, 'ArrayBuffer');
+
+    // 24.1.5 Properties of the ArrayBuffer Instances
+  }());
+
+  // ---------------------------------------
+  // 24.2 DataView Objects
+  // ---------------------------------------
+
+  // See typedarray.js for TypedArray polyfill
+
+  (function() {
+    if (!('DataView' in global))
+      return;
+
+    // 24.2.1 Abstract Operations For DataView Objects
+    // 24.2.1.1 GetViewValue(view, requestIndex, isLittleEndian, type)
+    // 24.2.1.2 SetViewValue(view, requestIndex, isLittleEndian, type, value)
+    // 24.2.2 The DataView Constructor
+    // 24.2.2.1 DataView (buffer [ , byteOffset [ , byteLength ] ] )
+    // 24.2.3 Properties of the DataView Constructor
+    // 24.2.3.1 DataView.prototype
+    // 24.2.4 Properties of the DataView Prototype Object
+    // 24.2.4.1 get DataView.prototype.buffer
+    // 24.2.4.2 get DataView.prototype.byteLength
+    // 24.2.4.3 get DataView.prototype.byteOffset
+    // 24.2.4.4 DataView.prototype.constructor
+    // 24.2.4.5 DataView.prototype.getFloat32 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.6 DataView.prototype.getFloat64 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.7 DataView.prototype.getInt8 ( byteOffset )
+    // 24.2.4.8 DataView.prototype.getInt16 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.9 DataView.prototype.getInt32 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
+    // 24.2.4.11 DataView.prototype.getUint16 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.12 DataView.prototype.getUint32 ( byteOffset [ , littleEndian ] )
+    // 24.2.4.13 DataView.prototype.setFloat32 ( byteOffset, value [ , littleEndian ] )
+    // 24.2.4.14 DataView.prototype.setFloat64 ( byteOffset, value [ , littleEndian ] )
+    // 24.2.4.15 DataView.prototype.setInt8 ( byteOffset, value )
+    // 24.2.4.16 DataView.prototype.setInt16 ( byteOffset, value [ , littleEndian ] )
+    // 24.2.4.17 DataView.prototype.setInt32 ( byteOffset, value [ , littleEndian ] )
+    // 24.2.4.18 DataView.prototype.setUint8 ( byteOffset, value )
+    // 24.2.4.19 DataView.prototype.setUint16 ( byteOffset, value [ , littleEndian ] )
+    // 24.2.4.20 DataView.prototype.setUint32 ( byteOffset, value [ , littleEndian ] )
+
+    // 24.2.4.21 DataView.prototype[ @@toStringTag ]
+    define(DataView.prototype, $$toStringTag, 'DataView');
+
+    // 24.2.5 Properties of DataView Instances
+  }());
+
+  // ---------------------------------------
+  // 24.3 The JSON Object
+  // ---------------------------------------
+
+  // 24.3.1 JSON.parse ( text [ , reviver ] )
+  // 24.3.2 JSON.stringify ( value [ , replacer [ , space ] ] )
+  // 24.3.3 JSON [ @@toStringTag ]
+  define(JSON, $$toStringTag, 'JSON');
+
+  // ---------------------------------------
+  // 25.1 Iteration
+  // ---------------------------------------
+
+  // 25.1.1 Common Iteration Interfaces
+  // 25.1.1.1 The Iterable Interface
+  // 25.1.1.2 The Iterator Interface
+  // 25.1.1.3 The IteratorResult Interface
+
+  // 25.1.2 The %IteratorPrototype% Object
+  // Defined earlier, so other prototypes can reference it.
+  // 25.1.2.1 %IteratorPrototype% [ @@iterator ] ( )
+  define($IteratorPrototype$, $$iterator, function() {
+    return this;
+  });
+
+
+  // ---------------------------------------
+  // 25.4 Promise Objects
+  // ---------------------------------------
+
+  (function() {
+    // 25.4 Promise Objects
+
+    // 25.4.1 Promise Abstract Operations
+
+    // 25.4.1.1 PromiseCapability Records
+    // 25.4.1.1.1 IfAbruptRejectPromise ( value, capability )
+
+    function IfAbruptRejectPromise(value, capability) {
+      var rejectResult = capability['[[Reject]]'].call(undefined, value);
+      return capability['[[Promise]]'];
+    }
+
+    // 25.4.1.2 PromiseReaction Records
+
+    // 25.4.1.3 CreateResolvingFunctions ( promise )
+
+    function CreateResolvingFunctions(promise) {
+      var alreadyResolved = {'[[value]]': false};
+      var resolve = PromiseResolveFunction();
+      set_internal(resolve, '[[Promise]]',  promise);
+      set_internal(resolve, '[[AlreadyResolved]]', alreadyResolved);
+      var reject = PromiseRejectFunction();
+      set_internal(reject, '[[Promise]]', promise);
+      set_internal(reject, '[[AlreadyResolved]]', alreadyResolved);
+      return { '[[Resolve]]': resolve, '[[Reject]]': reject};
+    }
+
+    // 25.4.1.3.1 Promise Reject Functions
+
+    function PromiseRejectFunction() {
+      var F = function(reason) {
+        console.assert(Type(F['[[Promise]]']) === 'object');
+        var promise = F['[[Promise]]'];
+        var alreadyResolved = F['[[AlreadyResolved]]'];
+        if (alreadyResolved['[[value]]']) return undefined;
+        set_internal(alreadyResolved, '[[value]]', true);
+        return RejectPromise(promise, reason);
+      };
+      return F;
+    }
+
+    // 25.4.1.3.2 Promise Resolve Functions
+
+    function PromiseResolveFunction() {
+      var F = function(resolution) {
+        console.assert(Type(F['[[Promise]]']) === 'object');
+        var promise = F['[[Promise]]'];
+        var alreadyResolved = F['[[AlreadyResolved]]'];
+        if (alreadyResolved['[[value]]']) return undefined;
+        set_internal(alreadyResolved, '[[value]]', true);
+
+        if (SameValue(resolution, promise))  {
+          var selfResolutionError = TypeError();
+          return RejectPromise(promise, selfResolutionError);
+        }
+        if (Type(resolution) !== 'object')
+          return FulfillPromise(promise, resolution);
+        try {
+          var then = resolution['then'];
+        } catch(then) {
+          return RejectPromise(promise, then);
+        }
+        if (!IsCallable(then))
+          return FulfillPromise(promise, resolution);
+        EnqueueJob('PromiseJobs', PromiseResolveThenableJob, [promise, resolution, then]);
+        return undefined;
+      };
+      return F;
+    }
+
+    // 25.4.1.4 FulfillPromise ( promise, value )
+
+    function FulfillPromise(promise, value) {
+      console.assert(promise['[[PromiseState]]'] === 'pending');
+      var reactions = promise['[[PromiseFulfillReactions]]'];
+      set_internal(promise, '[[PromiseResult]]', value);
+      set_internal(promise, '[[PromiseFulfillReactions]]', undefined);
+      set_internal(promise, '[[PromiseRejectReactions]]', undefined);
+      set_internal(promise, '[[PromiseState]]', 'fulfilled');
+      return TriggerPromiseReactions(reactions, value);
+    }
+
+    // 25.4.1.5 NewPromiseCapability ( C )
+
+    function NewPromiseCapability(c) {
+      // To keep Promise hermetic, this doesn't look much like the spec.
+      return CreatePromiseCapabilityRecord(undefined, c);
+    }
+
+    // 25.4.1.5.1 CreatePromiseCapabilityRecord ( promise, constructor )
+
+    function CreatePromiseCapabilityRecord(promise, constructor) {
+      // To keep Promise hermetic, this doesn't look much like the spec.
+      console.assert(IsConstructor(constructor));
+      var promiseCapability = {};
+      set_internal(promiseCapability, '[[Promise]]', promise);
+      set_internal(promiseCapability, '[[Resolve]]', undefined);
+      set_internal(promiseCapability, '[[Reject]]', undefined);
+      var executor = GetCapabilitiesExecutor();
+      set_internal(executor, '[[Capability]]', promiseCapability);
+
+      // NOTE: Differs from spec; object is constructed here
+      var constructorResult = promise = new constructor(executor);
+      set_internal(promiseCapability, '[[Promise]]', promise);
+
+      if (!IsCallable(promiseCapability['[[Resolve]]'])) throw TypeError();
+      if (!IsCallable(promiseCapability['[[Reject]]'])) throw TypeError();
+      if (Type(constructorResult) === 'object' && !SameValue(promise, constructorResult)) throw TypeError();
+      return promiseCapability;
+    }
+
+    // 25.4.1.5.2 GetCapabilitiesExecutor Functions
+
+    function GetCapabilitiesExecutor() {
+      var F = function(resolve, reject) {
+        console.assert(F['[[Capability]]']);
+        var promiseCapability = F['[[Capability]]'];
+        if (promiseCapability['[[Resolve]]'] !== undefined) throw TypeError();
+        if (promiseCapability['[[Reject]]'] !== undefined) throw TypeError();
+        set_internal(promiseCapability, '[[Resolve]]', resolve);
+        set_internal(promiseCapability, '[[Reject]]', reject);
+        return undefined;
+      };
+      return F;
+    }
+
+    // 25.4.1.6 IsPromise ( x )
+
+    function IsPromise(x) {
+      if (Type(x) !== 'object') return false;
+      if (!('[[PromiseState]]' in x)) return false;
+      if (x['[[PromiseState]]'] === undefined) return false;
+      return true;
+    }
+
+    // 25.4.1.7 RejectPromise ( promise, reason )
+
+    function RejectPromise(promise, reason) {
+      console.assert(promise['[[PromiseState]]'] === 'pending');
+      var reactions = promise['[[PromiseRejectReactions]]'];
+      set_internal(promise, '[[PromiseResult]]', reason);
+      set_internal(promise, '[[PromiseFulfillReactions]]', undefined);
+      set_internal(promise, '[[PromiseRejectReactions]]', undefined);
+      set_internal(promise, '[[PromiseState]]', 'rejected');
+      return TriggerPromiseReactions(reactions, reason);
+    }
+
+    // 25.4.1.8 TriggerPromiseReactions ( reactions, argument )
+
+    function TriggerPromiseReactions(reactions, argument) {
+      for (var i = 0, len = reactions.length; i < len; ++i)
+        EnqueueJob('PromiseJobs', PromiseReactionJob, [reactions[i], argument]);
+      return undefined;
+    }
+
+    // 25.4.2 Promise Jobs
+
+    // 25.4.2.1 PromiseReactionJob ( reaction, argument )
+
+    function PromiseReactionJob(reaction, argument) {
+      var promiseCapability = reaction['[[Capabilities]]'];
+      var handler = reaction['[[Handler]]'];
+      var handlerResult, status;
+      try {
+        if (handler === 'Identity') handlerResult = argument;
+        else if (handler === 'Thrower') throw argument;
+        else handlerResult = handler.call(undefined, argument);
+      } catch (handlerResult) {
+        status = promiseCapability['[[Reject]]'].call(undefined, handlerResult);
+        NextJob(status); return;
+      }
+      status = promiseCapability['[[Resolve]]'].call(undefined, handlerResult);
+      NextJob(status);
+    }
+
+    // 25.4.2.2 PromiseResolveThenableJob ( promiseToResolve, thenable, then)
+
+    function PromiseResolveThenableJob(promiseToResolve, thenable, then) {
+      // SPEC BUG: promise vs. promiseToResolve
+      var resolvingFunctions = CreateResolvingFunctions(promiseToResolve);
+      try {
+        var thenCallResult = then.call(thenable, resolvingFunctions['[[Resolve]]'],
+                                       resolvingFunctions['[[Reject]]']);
+      } catch (thenCallResult) {
+        var status = resolvingFunctions['[[Reject]]'].call(undefined, thenCallResult);
+        NextJob(status); return;
+      }
+      NextJob(thenCallResult);
+    }
+
+    // 25.4.3 The Promise Constructor
+
+    // 25.4.3.1 Promise ( executor )
+
+    function Promise(executor) {
+      var config = { configurable: false, enumerable: false, writable: true, value: undefined };
+      Object.defineProperty(this, '[[PromiseState]]', config);
+      Object.defineProperty(this, '[[PromiseConstructor]]', config);
+      Object.defineProperty(this, '[[PromiseResult]]', config);
+      Object.defineProperty(this, '[[PromiseFulfillReactions]]', config);
+      Object.defineProperty(this, '[[PromiseRejectReactions]]', config);
+
+      var promise = this;
+      if (Type(promise) !== 'object') throw new TypeError();
+      if (!('[[PromiseState]]' in promise)) throw TypeError();
+      if (promise['[[PromiseState]]'] !== undefined) throw TypeError();
+      if (!IsCallable(executor)) throw TypeError();
+
+      set_internal(promise, '[[PromiseConstructor]]', Promise);
+
+      return InitializePromise(promise, executor);
+    }
+
+    // 25.4.3.1.1 InitializePromise ( promise, executor )
+
+    function InitializePromise(promise, executor) {
+      console.assert('[[PromiseState]]' in promise);
+      console.assert(IsCallable(executor));
+      set_internal(promise, '[[PromiseState]]', 'pending');
+      set_internal(promise, '[[PromiseFulfillReactions]]', []);
+      set_internal(promise, '[[PromiseRejectReactions]]', []);
+      var resolvingFunctions = CreateResolvingFunctions(promise);
+      try {
+        var completion = executor.call(undefined, resolvingFunctions['[[Resolve]]'],
+                                       resolvingFunctions['[[Reject]]']);
+      } catch (completion) {
+        var status = resolvingFunctions['[[Reject]]'].call(undefined, completion);
+      }
+      return promise;
+    }
+
+    // 25.4.4 Properties of the Promise Constructor
+    // 25.4.4.1 Promise.all ( iterable )
+
+    define(Promise, 'all', function all(iterable) {
+      var c = strict(this);
+      var promiseCapability = NewPromiseCapability(c);
+      try {
+        var iterator = GetIterator(iterable);
+      } catch (value) {
+        promiseCapability['[[Reject]]'].call(undefined, value);
+        return promiseCapability['[[Promise]]'];
+      }
+      var values = [];
+      var remainingElementsCount = { value: 1 };
+      var index = 0;
+      while (true) {
+        try {
+          var next = IteratorStep(iterator);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        if (!next) {
+          remainingElementsCount.value -= 1;
+          if (remainingElementsCount.value === 0) {
+            var resolveResult = promiseCapability['[[Resolve]]'].apply(undefined, values);
+
+
+          }
+          return promiseCapability['[[Promise]]'];
+        }
+        try {
+          var nextValue = IteratorValue(next);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        try {
+          var nextPromise = c.resolve(nextValue);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        var resolveElement = PromiseAllResolveElementFunction();
+        set_internal(resolveElement, '[[AlreadyCalled]]', { value: false });
+        set_internal(resolveElement, '[[Index]]', index);
+        set_internal(resolveElement, '[[Values]]', values);
+        set_internal(resolveElement, '[[Capabilities]]', promiseCapability);
+        set_internal(resolveElement, '[[RemainingElements]]', remainingElementsCount);
+        remainingElementsCount.value += 1;
+        try {
+          var result = nextPromise.then(resolveElement, promiseCapability['[[Reject]]']);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        index += 1;
+      }
+    });
+
+    // 25.4.4.1.1 Promise.all Resolve Element Functions
+
+    function PromiseAllResolveElementFunction() {
+      var F = function(x) {
+        var alreadyCalled = F['[[AlreadyCalled]]'];
+        if (alreadyCalled.value) return undefined;
+        alreadyCalled.value = true;
+        var index = F['[[Index]]'];
+        var values = F['[[Values]]'];
+        var promiseCapability = F['[[Capabilities]]'];
+        var remainingElementsCount = F['[[RemainingElements]]'];
+        try {
+          values[index] = x;
+        } catch (result) {
+          promiseCapability['[[Reject]]'].call(undefined, result);
+          return promiseCapability['[[Promise]]'];
+        }
+        remainingElementsCount.value -= 1;
+        if (remainingElementsCount.value === 0)
+          return promiseCapability['[[Resolve]]'].call(undefined, values);
+        return undefined;
+      };
+      return F;
+    }
+
+    // 25.4.4.2 Promise.prototype
+
+    Promise.prototype = {};
+
+    // 25.4.4.3 Promise.race ( iterable )
+
+    define(Promise, 'race', function race(iterable) {
+      var c = strict(this);
+      var promiseCapability = NewPromiseCapability(c);
+      try {
+        var iterator = GetIterator(iterable);
+      } catch (value) {
+        promiseCapability['[[Reject]]'].call(undefined, value);
+        return promiseCapability['[[Promise]]'];
+      }
+      while (true) {
+        try {
+          var next = IteratorStep(iterator);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        if (!next) return promiseCapability['[[Promise]]'];
+        try {
+          var nextValue = IteratorValue(next);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        try {
+          var nextPromise = c.resolve(nextValue);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+        try {
+          nextPromise.then(promiseCapability['[[Resolve]]'], promiseCapability['[[Reject]]']);
+        } catch (value) {
+          promiseCapability['[[Reject]]'].call(undefined, value);
+          return promiseCapability['[[Promise]]'];
+        }
+      }
+    });
+
+    // 25.4.4.4 Promise.reject ( r )
+
+    define(Promise, 'reject', function reject(r) {
+      var c = strict(this);
+      var promiseCapability = NewPromiseCapability(c);
+      var rejectResult = promiseCapability['[[Reject]]'].call(undefined, r);
+      return promiseCapability['[[Promise]]'];
+    });
+
+    // 25.4.4.5 Promise.resolve ( x )
+
+    define(Promise, 'resolve', function resolve(x) {
+      var c = strict(this);
+      if (IsPromise(x)) {
+        var constructor = x['[[PromiseConstructor]]'];
+        if (SameValue(constructor, c)) return x;
+      }
+      var promiseCapability = NewPromiseCapability(c);
+      var resolveResult = promiseCapability['[[Resolve]]'].call(undefined, x);
+      return promiseCapability['[[Promise]]'];
+    });
+
+    // 25.4.4.6 Promise [ @@create ] ( )
+    // 25.4.4.6.1 AllocatePromise ( constructor )
+    // 25.4.5 Properties of the Promise Prototype Object
+    // 25.4.5.1 Promise.prototype.catch ( onRejected )
+
+    define(Promise.prototype, 'catch', function catch_(onRejected) {
+      var promise = this;
+      return promise.then(undefined, onRejected);
+    });
+
+    // 25.4.5.2 Promise.prototype.constructor
+
+    Promise.prototype.constructor = Promise;
+
+    // 25.4.5.3 Promise.prototype.then ( onFulfilled , onRejected )
+
+    define(Promise.prototype, 'then', function then(onFulfilled, onRejected) {
+      var promise = this;
+      if (!IsPromise(promise)) throw TypeError();
+      if (!IsCallable(onFulfilled)) onFulfilled = 'Identity';
+      if (!IsCallable(onRejected)) onRejected = 'Thrower';
+      var c = promise.constructor;
+      var promiseCapability = NewPromiseCapability(c);
+      var fulfillReaction = { '[[Capabilities]]': promiseCapability,
+                              '[[Handler]]': onFulfilled };
+      var rejectReaction = { '[[Capabilities]]': promiseCapability,
+                             '[[Handler]]': onRejected };
+      if (promise['[[PromiseState]]'] === 'pending') {
+        promise['[[PromiseFulfillReactions]]'].push(fulfillReaction);
+        promise['[[PromiseRejectReactions]]'].push(rejectReaction);
+      } else if (promise['[[PromiseState]]'] === 'fulfilled') {
+        var value = promise['[[PromiseResult]]'];
+        EnqueueJob('PromiseJobs', PromiseReactionJob, [fulfillReaction, value]);
+      } else if (promise['[[PromiseState]]'] === 'rejected') {
+        var reason = promise['[[PromiseResult]]'];
+        EnqueueJob('PromiseJobs', PromiseReactionJob, [rejectReaction, reason]);
+      }
+      return promiseCapability['[[Promise]]'];
+    });
+
+    // 25.4.6 Properties of Promise Instances
+
+    if (!('Promise' in global) || OVERRIDE_NATIVE_FOR_TESTING)
+      global.Promise = Promise;
+
+    // Patch early Promise.cast vs. Promise.resolve implementations
+    if ('cast' in global.Promise) global.Promise.resolve = global.Promise.cast;
+  }());
+
+  // 25.4.5.1 Promise.prototype [ @@toStringTag ]
+  define(Promise.prototype, $$toStringTag, 'Promise');
+
+  // ---------------------------------------
+  // 26 Reflection
+  // ---------------------------------------
+
+  (function() {
+    // 26.1 The Reflect Object
+    if (!('Reflect' in global) || OVERRIDE_NATIVE_FOR_TESTING)
+      global.Reflect = {};
+
+    // 26.1.1 Reflect.apply ( target, thisArgument, argumentsList )
+    define(
+      Reflect, 'apply',
+      function apply(target, thisArgument, argumentsList) {
+        if (!IsCallable(target)) throw TypeError();
+        return Function.prototype.apply.call(target, thisArgument, argumentsList);
+      });
+
+    // 26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
+    define(
+      Reflect, 'construct',
+      function construct(target, argumentsList) {
+        return __cons(target, argumentsList);
+      });
+
+    // 26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
+    define(
+      Reflect, 'defineProperty',
+      function defineProperty(target, propertyKey, attributes) {
+        try {
+          Object.defineProperty(target, propertyKey, attributes);
+          return true;
+        } catch (_) {
+          return false;
+        }
+      });
+
+    // 26.1.4 Reflect.deleteProperty ( target, propertyKey )
+    define(
+      Reflect, 'deleteProperty',
+      function deleteProperty(target,name) {
+        try {
+          delete target[name];
+          return !HasOwnProperty(target, name);
+        } catch (_) {
+          return false;
+        }
+      });
+
+    // 26.1.5 Reflect.enumerate ( target )
+    define(
+      Reflect, 'enumerate',
+      function enumerate(target) {
+        target = ToObject(target);
+        var iterator = Enumerate(target);
+        return iterator;
+      });
+
+    // 26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
+    define(
+      Reflect, 'get',
+      function get(target, name, receiver) {
+        target = ToObject(target);
+        name = String(name);
+        receiver = (receiver === undefined) ? target : ToObject(receiver);
+        var desc = getPropertyDescriptor(target, name);
+        if (desc && 'get' in desc)
+          return Function.prototype.call.call(desc['get'], receiver);
+        return target[name];
+      });
+
+    // 26.1.7 Reflect.getOwnPropertyDescriptor ( target, propertyKey )
+    define(
+      Reflect, 'getOwnPropertyDescriptor',
+      Object.getOwnPropertyDescriptor);
+
+    // 26.1.8 Reflect.getPrototypeOf ( target )
+    define(
+      Reflect, 'getPrototypeOf',
+      Object.getPrototypeOf);
+
+    // 26.1.9 Reflect.has ( target, propertyKey )
+    define(
+      Reflect, 'has',
+      function has(target,name) {
+        return String(name) in ToObject(target);
+      });
+
+    // 26.1.10 Reflect.isExtensible (target)
+    define(
+      Reflect, 'isExtensible',
+      Object.isExtensible);
+
+    // 26.1.11 Reflect.ownKeys ( target )
+    define(
+      Reflect, 'ownKeys',
+      function ownKeys(target) {
+        var obj = ToObject(target);
+        return Object.getOwnPropertyNames(obj);
+      });
+
+    // 26.1.12 Reflect.preventExtensions ( target )
+    define(
+      Reflect, 'preventExtensions',
+      function preventExtensions(target) {
+        try { Object.preventExtensions(target); return true; } catch (_) { return false; }
+      });
+
+    // 26.1.13 Reflect.set ( target, propertyKey, V [ , receiver ] )
+    define(
+      Reflect, 'set',
+      function set(target, name, value, receiver) {
+        target = ToObject(target);
+        name = String(name);
+        receiver = (receiver === undefined) ? target : ToObject(receiver);
+        var desc = getPropertyDescriptor(target, name);
+        try {
+          if (desc && 'set' in desc)
+            Function.prototype.call.call(desc['set'], receiver, value);
+          else
+            target[name] = value;
+          return true;
+        } catch (_) {
+          return false;
+        }
+      });
+
+    // 26.1.14 Reflect.setPrototypeOf ( target, proto )
+    define(
+      Reflect, 'setPrototypeOf',
+      function setPrototypeOf(target, proto) {
+        try {
+          target.__proto__ = proto;
+          return Reflect.getPrototypeOf(target) === proto;
+        } catch(_) {
+          return false;
+        }
+      });
+
+  }());
+
+  // ---------------------------------------
+  // 26.2 Proxy Objects
+  // ---------------------------------------
+
+  // Not polyfillable.
+
+}(self));
+
+// This helper is defined outside the main scope so that the use of
+// 'eval' does not taint the scope for minifiers.
+function __cons(t, a) {
+  return eval('new t(' + a.map(function(_, i) { return 'a[' + i + ']'; }).join(',') + ')');
+}
+</script>
+        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.foo = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function placeHoldersCount (b64) {
+  var len = b64.length
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // the number of equal signs (place holders)
+  // if there are two placeholders, than the two characters before it
+  // represent one byte
+  // if there is only one, then the three characters before it represent 2 bytes
+  // this is just a cheap hack to not do indexOf twice
+  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+}
+
+function byteLength (b64) {
+  // base64 is 4/3 + up to two characters of the original data
+  return b64.length * 3 / 4 - placeHoldersCount(b64)
+}
+
+function toByteArray (b64) {
+  var i, j, l, tmp, placeHolders, arr
+  var len = b64.length
+  placeHolders = placeHoldersCount(b64)
+
+  arr = new Arr(len * 3 / 4 - placeHolders)
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  l = placeHolders > 0 ? len - 4 : len
+
+  var L = 0
+
+  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+    arr[L++] = (tmp >> 16) & 0xFF
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  if (placeHolders === 2) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[L++] = tmp & 0xFF
+  } else if (placeHolders === 1) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var output = ''
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    output += lookup[tmp >> 2]
+    output += lookup[(tmp << 4) & 0x3F]
+    output += '=='
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+    output += lookup[tmp >> 10]
+    output += lookup[(tmp >> 4) & 0x3F]
+    output += lookup[(tmp << 2) & 0x3F]
+    output += '='
+  }
+
+  parts.push(output)
+
+  return parts.join('')
+}
+
+},{}],2:[function(require,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+/* eslint-disable no-proto */
+
+'use strict'
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+
+var K_MAX_LENGTH = 0x7fffffff
+exports.kMaxLength = K_MAX_LENGTH
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Print warning and recommend using `buffer` v4.x which has an Object
+ *               implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * We report that the browser does not support typed arrays if the are not subclassable
+ * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
+ * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
+ * for __proto__ and has a buggy typed array implementation.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+
+if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
+    typeof console.error === 'function') {
+  console.error(
+    'This browser lacks typed array (Uint8Array) support which is required by ' +
+    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
+  )
+}
+
+function typedArraySupport () {
+  // Can typed array instances can be augmented?
+  try {
+    var arr = new Uint8Array(1)
+    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
+    return arr.foo() === 42
+  } catch (e) {
+    return false
+  }
+}
+
+function createBuffer (length) {
+  if (length > K_MAX_LENGTH) {
+    throw new RangeError('Invalid typed array length')
+  }
+  // Return an augmented `Uint8Array` instance
+  var buf = new Uint8Array(length)
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+/**
+ * The Buffer constructor returns instances of `Uint8Array` that have their
+ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+ * returns a single octet.
+ *
+ * The `Uint8Array` prototype remains unmodified.
+ */
+
+function Buffer (arg, encodingOrOffset, length) {
+  // Common case.
+  if (typeof arg === 'number') {
+    if (typeof encodingOrOffset === 'string') {
+      throw new Error(
+        'If encoding is specified then the first argument must be a string'
+      )
+    }
+    return allocUnsafe(arg)
+  }
+  return from(arg, encodingOrOffset, length)
+}
+
+// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+if (typeof Symbol !== 'undefined' && Symbol.species &&
+    Buffer[Symbol.species] === Buffer) {
+  Object.defineProperty(Buffer, Symbol.species, {
+    value: null,
+    configurable: true,
+    enumerable: false,
+    writable: false
+  })
+}
+
+Buffer.poolSize = 8192 // not used by this implementation
+
+function from (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (value instanceof ArrayBuffer) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return fromObject(value)
+}
+
+/**
+ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
+ * if value is a number.
+ * Buffer.from(str[, encoding])
+ * Buffer.from(array)
+ * Buffer.from(buffer)
+ * Buffer.from(arrayBuffer[, byteOffset[, length]])
+ **/
+Buffer.from = function (value, encodingOrOffset, length) {
+  return from(value, encodingOrOffset, length)
+}
+
+// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
+// https://github.com/feross/buffer/pull/148
+Buffer.prototype.__proto__ = Uint8Array.prototype
+Buffer.__proto__ = Uint8Array
+
+function assertSize (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('"size" argument must be a number')
+  } else if (size < 0) {
+    throw new RangeError('"size" argument must not be negative')
+  }
+}
+
+function alloc (size, fill, encoding) {
+  assertSize(size)
+  if (size <= 0) {
+    return createBuffer(size)
+  }
+  if (fill !== undefined) {
+    // Only pay attention to encoding if it's a string. This
+    // prevents accidentally sending in a number that would
+    // be interpretted as a start offset.
+    return typeof encoding === 'string'
+      ? createBuffer(size).fill(fill, encoding)
+      : createBuffer(size).fill(fill)
+  }
+  return createBuffer(size)
+}
+
+/**
+ * Creates a new filled Buffer instance.
+ * alloc(size[, fill[, encoding]])
+ **/
+Buffer.alloc = function (size, fill, encoding) {
+  return alloc(size, fill, encoding)
+}
+
+function allocUnsafe (size) {
+  assertSize(size)
+  return createBuffer(size < 0 ? 0 : checked(size) | 0)
+}
+
+/**
+ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
+ * */
+Buffer.allocUnsafe = function (size) {
+  return allocUnsafe(size)
+}
+/**
+ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
+ */
+Buffer.allocUnsafeSlow = function (size) {
+  return allocUnsafe(size)
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  var length = byteLength(string, encoding) | 0
+  var buf = createBuffer(length)
+
+  var actual = buf.write(string, encoding)
+
+  if (actual !== length) {
+    // Writing a hex string, for example, that contains invalid characters will
+    // cause everything after the first invalid character to be ignored. (e.g.
+    // 'abxxcd' will be treated as 'ab')
+    buf = buf.slice(0, actual)
+  }
+
+  return buf
+}
+
+function fromArrayLike (array) {
+  var length = array.length < 0 ? 0 : checked(array.length) | 0
+  var buf = createBuffer(length)
+  for (var i = 0; i < length; i += 1) {
+    buf[i] = array[i] & 255
+  }
+  return buf
+}
+
+function fromArrayBuffer (array, byteOffset, length) {
+  if (byteOffset < 0 || array.byteLength < byteOffset) {
+    throw new RangeError('\'offset\' is out of bounds')
+  }
+
+  if (array.byteLength < byteOffset + (length || 0)) {
+    throw new RangeError('\'length\' is out of bounds')
+  }
+
+  var buf
+  if (byteOffset === undefined && length === undefined) {
+    buf = new Uint8Array(array)
+  } else if (length === undefined) {
+    buf = new Uint8Array(array, byteOffset)
+  } else {
+    buf = new Uint8Array(array, byteOffset, length)
+  }
+
+  // Return an augmented `Uint8Array` instance
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+function fromObject (obj) {
+  if (Buffer.isBuffer(obj)) {
+    var len = checked(obj.length) | 0
+    var buf = createBuffer(len)
+
+    if (buf.length === 0) {
+      return buf
+    }
+
+    obj.copy(buf, 0, 0, len)
+    return buf
+  }
+
+  if (obj) {
+    if (isArrayBufferView(obj) || 'length' in obj) {
+      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
+        return createBuffer(0)
+      }
+      return fromArrayLike(obj)
+    }
+
+    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
+      return fromArrayLike(obj.data)
+    }
+  }
+
+  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
+}
+
+function checked (length) {
+  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= K_MAX_LENGTH) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
+  }
+  return length | 0
+}
+
+function SlowBuffer (length) {
+  if (+length != length) { // eslint-disable-line eqeqeq
+    length = 0
+  }
+  return Buffer.alloc(+length)
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return b != null && b._isBuffer === true
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i]
+      y = b[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'latin1':
+    case 'binary':
+    case 'base64':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, length) {
+  if (!Array.isArray(list)) {
+    throw new TypeError('"list" argument must be an Array of Buffers')
+  }
+
+  if (list.length === 0) {
+    return Buffer.alloc(0)
+  }
+
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; ++i) {
+      length += list[i].length
+    }
+  }
+
+  var buffer = Buffer.allocUnsafe(length)
+  var pos = 0
+  for (i = 0; i < list.length; ++i) {
+    var buf = list[i]
+    if (!Buffer.isBuffer(buf)) {
+      throw new TypeError('"list" argument must be an Array of Buffers')
+    }
+    buf.copy(buffer, pos)
+    pos += buf.length
+  }
+  return buffer
+}
+
+function byteLength (string, encoding) {
+  if (Buffer.isBuffer(string)) {
+    return string.length
+  }
+  if (isArrayBufferView(string) || string instanceof ArrayBuffer) {
+    return string.byteLength
+  }
+  if (typeof string !== 'string') {
+    string = '' + string
+  }
+
+  var len = string.length
+  if (len === 0) return 0
+
+  // Use a for loop to avoid recursion
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'ascii':
+      case 'latin1':
+      case 'binary':
+        return len
+      case 'utf8':
+      case 'utf-8':
+      case undefined:
+        return utf8ToBytes(string).length
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return len * 2
+      case 'hex':
+        return len >>> 1
+      case 'base64':
+        return base64ToBytes(string).length
+      default:
+        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+Buffer.byteLength = byteLength
+
+function slowToString (encoding, start, end) {
+  var loweredCase = false
+
+  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
+  // property of a typed array.
+
+  // This behaves neither like String nor Uint8Array in that we set start/end
+  // to their upper/lower bounds if the value passed is out of range.
+  // undefined is handled specially as per ECMA-262 6th Edition,
+  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
+  if (start === undefined || start < 0) {
+    start = 0
+  }
+  // Return early if start > this.length. Done here to prevent potential uint32
+  // coercion fail below.
+  if (start > this.length) {
+    return ''
+  }
+
+  if (end === undefined || end > this.length) {
+    end = this.length
+  }
+
+  if (end <= 0) {
+    return ''
+  }
+
+  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
+  end >>>= 0
+  start >>>= 0
+
+  if (end <= start) {
+    return ''
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Slice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
+// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
+// reliably in a browserify context because there could be multiple different
+// copies of the 'buffer' package in use. This method works even for Buffer
+// instances that were created from another copy of the `buffer` package.
+// See: https://github.com/feross/buffer/issues/154
+Buffer.prototype._isBuffer = true
+
+function swap (b, n, m) {
+  var i = b[n]
+  b[n] = b[m]
+  b[m] = i
+}
+
+Buffer.prototype.swap16 = function swap16 () {
+  var len = this.length
+  if (len % 2 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 16-bits')
+  }
+  for (var i = 0; i < len; i += 2) {
+    swap(this, i, i + 1)
+  }
+  return this
+}
+
+Buffer.prototype.swap32 = function swap32 () {
+  var len = this.length
+  if (len % 4 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 32-bits')
+  }
+  for (var i = 0; i < len; i += 4) {
+    swap(this, i, i + 3)
+    swap(this, i + 1, i + 2)
+  }
+  return this
+}
+
+Buffer.prototype.swap64 = function swap64 () {
+  var len = this.length
+  if (len % 8 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 64-bits')
+  }
+  for (var i = 0; i < len; i += 8) {
+    swap(this, i, i + 7)
+    swap(this, i + 1, i + 6)
+    swap(this, i + 2, i + 5)
+    swap(this, i + 3, i + 4)
+  }
+  return this
+}
+
+Buffer.prototype.toString = function toString () {
+  var length = this.length
+  if (length === 0) return ''
+  if (arguments.length === 0) return utf8Slice(this, 0, length)
+  return slowToString.apply(this, arguments)
+}
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
+  if (!Buffer.isBuffer(target)) {
+    throw new TypeError('Argument must be a Buffer')
+  }
+
+  if (start === undefined) {
+    start = 0
+  }
+  if (end === undefined) {
+    end = target ? target.length : 0
+  }
+  if (thisStart === undefined) {
+    thisStart = 0
+  }
+  if (thisEnd === undefined) {
+    thisEnd = this.length
+  }
+
+  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
+    throw new RangeError('out of range index')
+  }
+
+  if (thisStart >= thisEnd && start >= end) {
+    return 0
+  }
+  if (thisStart >= thisEnd) {
+    return -1
+  }
+  if (start >= end) {
+    return 1
+  }
+
+  start >>>= 0
+  end >>>= 0
+  thisStart >>>= 0
+  thisEnd >>>= 0
+
+  if (this === target) return 0
+
+  var x = thisEnd - thisStart
+  var y = end - start
+  var len = Math.min(x, y)
+
+  var thisCopy = this.slice(thisStart, thisEnd)
+  var targetCopy = target.slice(start, end)
+
+  for (var i = 0; i < len; ++i) {
+    if (thisCopy[i] !== targetCopy[i]) {
+      x = thisCopy[i]
+      y = targetCopy[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
+// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
+//
+// Arguments:
+// - buffer - a Buffer to search
+// - val - a string, Buffer, or number
+// - byteOffset - an index into `buffer`; will be clamped to an int32
+// - encoding - an optional encoding, relevant is val is a string
+// - dir - true for indexOf, false for lastIndexOf
+function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
+  // Empty buffer means no match
+  if (buffer.length === 0) return -1
+
+  // Normalize byteOffset
+  if (typeof byteOffset === 'string') {
+    encoding = byteOffset
+    byteOffset = 0
+  } else if (byteOffset > 0x7fffffff) {
+    byteOffset = 0x7fffffff
+  } else if (byteOffset < -0x80000000) {
+    byteOffset = -0x80000000
+  }
+  byteOffset = +byteOffset  // Coerce to Number.
+  if (numberIsNaN(byteOffset)) {
+    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
+    byteOffset = dir ? 0 : (buffer.length - 1)
+  }
+
+  // Normalize byteOffset: negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
+  if (byteOffset >= buffer.length) {
+    if (dir) return -1
+    else byteOffset = buffer.length - 1
+  } else if (byteOffset < 0) {
+    if (dir) byteOffset = 0
+    else return -1
+  }
+
+  // Normalize val
+  if (typeof val === 'string') {
+    val = Buffer.from(val, encoding)
+  }
+
+  // Finally, search either indexOf (if dir is true) or lastIndexOf
+  if (Buffer.isBuffer(val)) {
+    // Special case: looking for empty string/buffer always fails
+    if (val.length === 0) {
+      return -1
+    }
+    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
+  } else if (typeof val === 'number') {
+    val = val & 0xFF // Search for a byte value [0-255]
+    if (typeof Uint8Array.prototype.indexOf === 'function') {
+      if (dir) {
+        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+      } else {
+        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+      }
+    }
+    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
+  var indexSize = 1
+  var arrLength = arr.length
+  var valLength = val.length
+
+  if (encoding !== undefined) {
+    encoding = String(encoding).toLowerCase()
+    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
+        encoding === 'utf16le' || encoding === 'utf-16le') {
+      if (arr.length < 2 || val.length < 2) {
+        return -1
+      }
+      indexSize = 2
+      arrLength /= 2
+      valLength /= 2
+      byteOffset /= 2
+    }
+  }
+
+  function read (buf, i) {
+    if (indexSize === 1) {
+      return buf[i]
+    } else {
+      return buf.readUInt16BE(i * indexSize)
+    }
+  }
+
+  var i
+  if (dir) {
+    var foundIndex = -1
+    for (i = byteOffset; i < arrLength; i++) {
+      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
+      } else {
+        if (foundIndex !== -1) i -= i - foundIndex
+        foundIndex = -1
+      }
+    }
+  } else {
+    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
+    for (i = byteOffset; i >= 0; i--) {
+      var found = true
+      for (var j = 0; j < valLength; j++) {
+        if (read(arr, i + j) !== read(val, j)) {
+          found = false
+          break
+        }
+      }
+      if (found) return i
+    }
+  }
+
+  return -1
+}
+
+Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
+  return this.indexOf(val, byteOffset, encoding) !== -1
+}
+
+Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+}
+
+Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+}
+
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
+
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; ++i) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (numberIsNaN(parsed)) return i
+    buf[offset + i] = parsed
+  }
+  return i
+}
+
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
+
+function latin1Write (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
+
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
+
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
+
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset >>> 0
+    if (isFinite(length)) {
+      length = length >>> 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  } else {
+    throw new Error(
+      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
+    )
+  }
+
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
+
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('Attempt to write outside buffer bounds')
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
+
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Write(this, string, offset, length)
+
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
+  }
+}
+
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
+  }
+}
+
+function utf8Slice (buf, start, end) {
+  end = Math.min(buf.length, end)
+  var res = []
+
+  var i = start
+  while (i < end) {
+    var firstByte = buf[i]
+    var codePoint = null
+    var bytesPerSequence = (firstByte > 0xEF) ? 4
+      : (firstByte > 0xDF) ? 3
+      : (firstByte > 0xBF) ? 2
+      : 1
+
+    if (i + bytesPerSequence <= end) {
+      var secondByte, thirdByte, fourthByte, tempCodePoint
+
+      switch (bytesPerSequence) {
+        case 1:
+          if (firstByte < 0x80) {
+            codePoint = firstByte
+          }
+          break
+        case 2:
+          secondByte = buf[i + 1]
+          if ((secondByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+            if (tempCodePoint > 0x7F) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 3:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 4:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          fourthByte = buf[i + 3]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+              codePoint = tempCodePoint
+            }
+          }
+      }
+    }
+
+    if (codePoint === null) {
+      // we did not generate a valid codePoint so insert a
+      // replacement char (U+FFFD) and advance only 1 byte
+      codePoint = 0xFFFD
+      bytesPerSequence = 1
+    } else if (codePoint > 0xFFFF) {
+      // encode to utf16 (surrogate pair dance)
+      codePoint -= 0x10000
+      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+      codePoint = 0xDC00 | codePoint & 0x3FF
+    }
+
+    res.push(codePoint)
+    i += bytesPerSequence
+  }
+
+  return decodeCodePointsArray(res)
+}
+
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000
+
+function decodeCodePointsArray (codePoints) {
+  var len = codePoints.length
+  if (len <= MAX_ARGUMENTS_LENGTH) {
+    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+  }
+
+  // Decode in chunks to avoid "call stack size exceeded".
+  var res = ''
+  var i = 0
+  while (i < len) {
+    res += String.fromCharCode.apply(
+      String,
+      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+    )
+  }
+  return res
+}
+
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
+
+function latin1Slice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
+
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i])
+  }
+  return ret
+}
+
+function hexSlice (buf, start, end) {
+  var len = buf.length
+
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
+
+  var out = ''
+  for (var i = start; i < end; ++i) {
+    out += toHex(buf[i])
+  }
+  return out
+}
+
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
+  }
+  return res
+}
+
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
+
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
+
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
+
+  if (end < start) end = start
+
+  var newBuf = this.subarray(start, end)
+  // Return an augmented `Uint8Array` instance
+  newBuf.__proto__ = Buffer.prototype
+  return newBuf
+}
+
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
+
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
+
+  return val
+}
+
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
+
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
+
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
+
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
+
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
+
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
+
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+
+  return val
+}
+
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
+
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
+
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
+
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
+
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
+
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
+
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
+
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
+
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+}
+
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset + 3] = (value >>> 24)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 1] = (value >>> 8)
+  this[offset] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = 0
+  var mul = 1
+  var sub = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
+
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
+
+  var i = byteLength - 1
+  var mul = 1
+  var sub = 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
+
+  return offset + byteLength
+}
+
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
+
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
+
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 3] = (value >>> 24)
+  return offset + 4
+}
+
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
+
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+  if (offset < 0) throw new RangeError('Index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
+
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
+
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+  }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
+
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
+
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
+
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
+
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
+
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
+  }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
+  }
+
+  var len = end - start
+  var i
+
+  if (this === target && start < targetStart && targetStart < end) {
+    // descending copy from end
+    for (i = len - 1; i >= 0; --i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else if (len < 1000) {
+    // ascending copy from start
+    for (i = 0; i < len; ++i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    Uint8Array.prototype.set.call(
+      target,
+      this.subarray(start, start + len),
+      targetStart
+    )
+  }
+
+  return len
+}
+
+// Usage:
+//    buffer.fill(number[, offset[, end]])
+//    buffer.fill(buffer[, offset[, end]])
+//    buffer.fill(string[, offset[, end]][, encoding])
+Buffer.prototype.fill = function fill (val, start, end, encoding) {
+  // Handle string cases:
+  if (typeof val === 'string') {
+    if (typeof start === 'string') {
+      encoding = start
+      start = 0
+      end = this.length
+    } else if (typeof end === 'string') {
+      encoding = end
+      end = this.length
+    }
+    if (val.length === 1) {
+      var code = val.charCodeAt(0)
+      if (code < 256) {
+        val = code
+      }
+    }
+    if (encoding !== undefined && typeof encoding !== 'string') {
+      throw new TypeError('encoding must be a string')
+    }
+    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
+      throw new TypeError('Unknown encoding: ' + encoding)
+    }
+  } else if (typeof val === 'number') {
+    val = val & 255
+  }
+
+  // Invalid ranges are not set to a default, so can range check early.
+  if (start < 0 || this.length < start || this.length < end) {
+    throw new RangeError('Out of range index')
+  }
+
+  if (end <= start) {
+    return this
+  }
+
+  start = start >>> 0
+  end = end === undefined ? this.length : end >>> 0
+
+  if (!val) val = 0
+
+  var i
+  if (typeof val === 'number') {
+    for (i = start; i < end; ++i) {
+      this[i] = val
+    }
+  } else {
+    var bytes = Buffer.isBuffer(val)
+      ? val
+      : new Buffer(val, encoding)
+    var len = bytes.length
+    for (i = 0; i < end - start; ++i) {
+      this[i + start] = bytes[i % len]
+    }
+  }
+
+  return this
+}
+
+// HELPER FUNCTIONS
+// ================
+
+var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
+
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = str.trim().replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
+  }
+  return str
+}
+
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
+
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
+
+  for (var i = 0; i < length; ++i) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (!leadSurrogate) {
+        // no lead yet
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        }
+
+        // valid lead
+        leadSurrogate = codePoint
+
+        continue
+      }
+
+      // 2 leads in a row
+      if (codePoint < 0xDC00) {
+        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+        leadSurrogate = codePoint
+        continue
+      }
+
+      // valid surrogate pair
+      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+    }
+
+    leadSurrogate = null
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x110000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
+    }
+  }
+
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
+  }
+  return byteArray
+}
+
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
+  }
+
+  return byteArray
+}
+
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
+
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; ++i) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
+
+// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
+function isArrayBufferView (obj) {
+  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+}
+
+function numberIsNaN (obj) {
+  return obj !== obj // eslint-disable-line no-self-compare
+}
+
+},{"base64-js":1,"ieee754":3}],3:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
+
+  i += d
+
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
+
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
+
+  value = Math.abs(value)
+
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
+    } else {
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
+    }
+
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen)
+      e = e + eBias
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
+    }
+  }
+
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+
+  buffer[offset + i - d] |= s * 128
+}
+
+},{}],4:[function(require,module,exports){
+window.basex = require('base-x')
+},{"base-x":5}],5:[function(require,module,exports){
+// base-x encoding
+// Forked from https://github.com/cryptocoinjs/bs58
+// Originally written by Mike Hearn for BitcoinJ
+// Copyright (c) 2011 Google Inc
+// Ported to JavaScript by Stefan Thomas
+// Merged Buffer refactorings from base58-native by Stephen Pair
+// Copyright (c) 2013 BitPay Inc
+
+var Buffer = require('safe-buffer').Buffer
+
+module.exports = function base (ALPHABET) {
+  var ALPHABET_MAP = {}
+  var BASE = ALPHABET.length
+  var LEADER = ALPHABET.charAt(0)
+
+  // pre-compute lookup table
+  for (var z = 0; z < ALPHABET.length; z++) {
+    var x = ALPHABET.charAt(z)
+
+    if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
+    ALPHABET_MAP[x] = z
+  }
+
+  function encode (source) {
+    if (source.length === 0) return ''
+
+    var digits = [0]
+    for (var i = 0; i < source.length; ++i) {
+      for (var j = 0, carry = source[i]; j < digits.length; ++j) {
+        carry += digits[j] << 8
+        digits[j] = carry % BASE
+        carry = (carry / BASE) | 0
+      }
+
+      while (carry > 0) {
+        digits.push(carry % BASE)
+        carry = (carry / BASE) | 0
+      }
+    }
+
+    var string = ''
+
+    // deal with leading zeros
+    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0]
+    // convert digits to a string
+    for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
+
+    return string
+  }
+
+  function decodeUnsafe (string) {
+    if (string.length === 0) return Buffer.allocUnsafe(0)
+
+    var bytes = [0]
+    for (var i = 0; i < string.length; i++) {
+      var value = ALPHABET_MAP[string[i]]
+      if (value === undefined) return
+
+      for (var j = 0, carry = value; j < bytes.length; ++j) {
+        carry += bytes[j] * BASE
+        bytes[j] = carry & 0xff
+        carry >>= 8
+      }
+
+      while (carry > 0) {
+        bytes.push(carry & 0xff)
+        carry >>= 8
+      }
+    }
+
+    // deal with leading zeros
+    for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
+      bytes.push(0)
+    }
+
+    return Buffer.from(bytes.reverse())
+  }
+
+  function decode (string) {
+    var buffer = decodeUnsafe(string)
+    if (buffer) return buffer
+
+    throw new Error('Non-base' + BASE + ' character')
+  }
+
+  return {
+    encode: encode,
+    decodeUnsafe: decodeUnsafe,
+    decode: decode
+  }
+}
+
+},{"safe-buffer":6}],6:[function(require,module,exports){
+module.exports = require('buffer')
+
+},{"buffer":2}]},{},[4])(4)
+});</script>
+        <script>(function (root) {
+   "use strict";
+
+/***** unorm.js *****/
+
+/*
+ * UnicodeNormalizer 1.0.0
+ * Copyright (c) 2008 Matsuza
+ * Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
+ * $Date: 2008-06-05 16:44:17 +0200 (Thu, 05 Jun 2008) $
+ * $Rev: 13309 $
+ */
+
+   var DEFAULT_FEATURE = [null, 0, {}];
+   var CACHE_THRESHOLD = 10;
+   var SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161, TBase = 0x11A7, LCount = 19, VCount = 21, TCount = 28;
+   var NCount = VCount * TCount; // 588
+   var SCount = LCount * NCount; // 11172
+
+   var UChar = function(cp, feature){
+      this.codepoint = cp;
+      this.feature = feature;
+   };
+
+   // Strategies
+   var cache = {};
+   var cacheCounter = [];
+   for (var i = 0; i <= 0xFF; ++i){
+      cacheCounter[i] = 0;
+   }
+
+   function fromCache(next, cp, needFeature){
+      var ret = cache[cp];
+      if(!ret){
+         ret = next(cp, needFeature);
+         if(!!ret.feature && ++cacheCounter[(cp >> 8) & 0xFF] > CACHE_THRESHOLD){
+            cache[cp] = ret;
+         }
+      }
+      return ret;
+   }
+
+   function fromData(next, cp, needFeature){
+      var hash = cp & 0xFF00;
+      var dunit = UChar.udata[hash] || {};
+      var f = dunit[cp];
+      return f ? new UChar(cp, f) : new UChar(cp, DEFAULT_FEATURE);
+   }
+   function fromCpOnly(next, cp, needFeature){
+      return !!needFeature ? next(cp, needFeature) : new UChar(cp, null);
+   }
+   function fromRuleBasedJamo(next, cp, needFeature){
+      var j;
+      if(cp < LBase || (LBase + LCount <= cp && cp < SBase) || (SBase + SCount < cp)){
+         return next(cp, needFeature);
+      }
+      if(LBase <= cp && cp < LBase + LCount){
+         var c = {};
+         var base = (cp - LBase) * VCount;
+         for (j = 0; j < VCount; ++j){
+            c[VBase + j] = SBase + TCount * (j + base);
+         }
+         return new UChar(cp, [,,c]);
+      }
+
+      var SIndex = cp - SBase;
+      var TIndex = SIndex % TCount;
+      var feature = [];
+      if(TIndex !== 0){
+         feature[0] = [SBase + SIndex - TIndex, TBase + TIndex];
+      } else {
+         feature[0] = [LBase + Math.floor(SIndex / NCount), VBase + Math.floor((SIndex % NCount) / TCount)];
+         feature[2] = {};
+         for (j = 1; j < TCount; ++j){
+            feature[2][TBase + j] = cp + j;
+         }
+      }
+      return new UChar(cp, feature);
+   }
+   function fromCpFilter(next, cp, needFeature){
+      return cp < 60 || 13311 < cp && cp < 42607 ? new UChar(cp, DEFAULT_FEATURE) : next(cp, needFeature);
+   }
+
+   var strategies = [fromCpFilter, fromCache, fromCpOnly, fromRuleBasedJamo, fromData];
+
+   UChar.fromCharCode = strategies.reduceRight(function (next, strategy) {
+      return function (cp, needFeature) {
+         return strategy(next, cp, needFeature);
+      };
+   }, null);
+
+   UChar.isHighSurrogate = function(cp){
+      return cp >= 0xD800 && cp <= 0xDBFF;
+   };
+   UChar.isLowSurrogate = function(cp){
+      return cp >= 0xDC00 && cp <= 0xDFFF;
+   };
+
+   UChar.prototype.prepFeature = function(){
+      if(!this.feature){
+         this.feature = UChar.fromCharCode(this.codepoint, true).feature;
+      }
+   };
+
+   UChar.prototype.toString = function(){
+      if(this.codepoint < 0x10000){
+         return String.fromCharCode(this.codepoint);
+      } else {
+         var x = this.codepoint - 0x10000;
+         return String.fromCharCode(Math.floor(x / 0x400) + 0xD800, x % 0x400 + 0xDC00);
+      }
+   };
+
+   UChar.prototype.getDecomp = function(){
+      this.prepFeature();
+      return this.feature[0] || null;
+   };
+
+   UChar.prototype.isCompatibility = function(){
+      this.prepFeature();
+      return !!this.feature[1] && (this.feature[1] & (1 << 8));
+   };
+   UChar.prototype.isExclude = function(){
+      this.prepFeature();
+      return !!this.feature[1] && (this.feature[1] & (1 << 9));
+   };
+   UChar.prototype.getCanonicalClass = function(){
+      this.prepFeature();
+      return !!this.feature[1] ? (this.feature[1] & 0xff) : 0;
+   };
+   UChar.prototype.getComposite = function(following){
+      this.prepFeature();
+      if(!this.feature[2]){
+         return null;
+      }
+      var cp = this.feature[2][following.codepoint];
+      return cp ? UChar.fromCharCode(cp) : null;
+   };
+
+   var UCharIterator = function(str){
+      this.str = str;
+      this.cursor = 0;
+   };
+   UCharIterator.prototype.next = function(){
+      if(!!this.str && this.cursor < this.str.length){
+         var cp = this.str.charCodeAt(this.cursor++);
+         var d;
+         if(UChar.isHighSurrogate(cp) && this.cursor < this.str.length && UChar.isLowSurrogate((d = this.str.charCodeAt(this.cursor)))){
+            cp = (cp - 0xD800) * 0x400 + (d -0xDC00) + 0x10000;
+            ++this.cursor;
+         }
+         return UChar.fromCharCode(cp);
+      } else {
+         this.str = null;
+         return null;
+      }
+   };
+
+   var RecursDecompIterator = function(it, cano){
+      this.it = it;
+      this.canonical = cano;
+      this.resBuf = [];
+   };
+
+   RecursDecompIterator.prototype.next = function(){
+      function recursiveDecomp(cano, uchar){
+         var decomp = uchar.getDecomp();
+         if(!!decomp && !(cano && uchar.isCompatibility())){
+            var ret = [];
+            for(var i = 0; i < decomp.length; ++i){
+               var a = recursiveDecomp(cano, UChar.fromCharCode(decomp[i]));
+                ret = ret.concat(a);
+            }
+            return ret;
+         } else {
+            return [uchar];
+         }
+      }
+      if(this.resBuf.length === 0){
+         var uchar = this.it.next();
+         if(!uchar){
+            return null;
+         }
+         this.resBuf = recursiveDecomp(this.canonical, uchar);
+      }
+      return this.resBuf.shift();
+   };
+
+   var DecompIterator = function(it){
+      this.it = it;
+      this.resBuf = [];
+   };
+
+   DecompIterator.prototype.next = function(){
+      var cc;
+      if(this.resBuf.length === 0){
+         do{
+            var uchar = this.it.next();
+            if(!uchar){
+               break;
+            }
+            cc = uchar.getCanonicalClass();
+            var inspt = this.resBuf.length;
+            if(cc !== 0){
+               for(; inspt > 0; --inspt){
+                  var uchar2 = this.resBuf[inspt - 1];
+                  var cc2 = uchar2.getCanonicalClass();
+                  if(cc2 <= cc){
+                     break;
+                  }
+               }
+            }
+            this.resBuf.splice(inspt, 0, uchar);
+         } while(cc !== 0);
+      }
+      return this.resBuf.shift();
+   };
+
+   var CompIterator = function(it){
+      this.it = it;
+      this.procBuf = [];
+      this.resBuf = [];
+      this.lastClass = null;
+   };
+
+   CompIterator.prototype.next = function(){
+      while(this.resBuf.length === 0){
+         var uchar = this.it.next();
+         if(!uchar){
+            this.resBuf = this.procBuf;
+            this.procBuf = [];
+            break;
+         }
+         if(this.procBuf.length === 0){
+            this.lastClass = uchar.getCanonicalClass();
+            this.procBuf.push(uchar);
+         } else {
+            var starter = this.procBuf[0];
+            var composite = starter.getComposite(uchar);
+            var cc = uchar.getCanonicalClass();
+            if(!!composite && (this.lastClass < cc || this.lastClass === 0)){
+               this.procBuf[0] = composite;
+            } else {
+               if(cc === 0){
+                  this.resBuf = this.procBuf;
+                  this.procBuf = [];
+               }
+               this.lastClass = cc;
+               this.procBuf.push(uchar);
+            }
+         }
+      }
+      return this.resBuf.shift();
+   };
+
+   var createIterator = function(mode, str){
+      switch(mode){
+         case "NFD":
+            return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true));
+         case "NFKD":
+            return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false));
+         case "NFC":
+            return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true)));
+         case "NFKC":
+            return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false)));
+      }
+      throw mode + " is invalid";
+   };
+   var normalize = function(mode, str){
+      var it = createIterator(mode, str);
+      var ret = "";
+      var uchar;
+      while(!!(uchar = it.next())){
+         ret += uchar.toString();
+      }
+      return ret;
+   };
+
+   /* API functions */
+   function nfd(str){
+      return normalize("NFD", str);
+   }
+
+   function nfkd(str){
+      return normalize("NFKD", str);
+   }
+
+   function nfc(str){
+      return normalize("NFC", str);
+   }
+
+   function nfkc(str){
+      return normalize("NFKC", str);
+   }
+
+/* Unicode data */
+UChar.udata={
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+
+};
+
+   /***** Module to export */
+   var unorm = {
+      nfc: nfc,
+      nfd: nfd,
+      nfkc: nfkc,
+      nfkd: nfkd
+   };
+
+   /*globals module:true,define:true*/
+
+   // CommonJS
+   if (typeof module === "object") {
+      module.exports = unorm;
+
+   // AMD
+   } else if (typeof define === "function" && define.amd) {
+      define("unorm", function () {
+         return unorm;
+      });
+
+   // Global
+   } else {
+      root.unorm = unorm;
+   }
+
+   /***** Export as shim for String::normalize method *****/
+   /*
+      http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#november_8_2013_draft_rev_21
+
+      21.1.3.12 String.prototype.normalize(form="NFC")
+      When the normalize method is called with one argument form, the following steps are taken:
+
+      1. Let O be CheckObjectCoercible(this value).
+      2. Let S be ToString(O).
+      3. ReturnIfAbrupt(S).
+      4. If form is not provided or undefined let form be "NFC".
+      5. Let f be ToString(form).
+      6. ReturnIfAbrupt(f).
+      7. If f is not one of "NFC", "NFD", "NFKC", or "NFKD", then throw a RangeError Exception.
+      8. Let ns be the String value is the result of normalizing S into the normalization form named by f as specified in Unicode Standard Annex #15, UnicodeNormalizatoin Forms.
+      9. Return ns.
+
+      The length property of the normalize method is 0.
+
+      *NOTE* The normalize function is intentionally generic; it does not require that its this value be a String object. Therefore it can be transferred to other kinds of objects for use as a method.
+   */
+    unorm.shimApplied = false;
+
+   if (!String.prototype.normalize) {
+      String.prototype.normalize = function(form) {
+         var str = "" + this;
+         form =  form === undefined ? "NFC" : form;
+
+         if (form === "NFC") {
+            return unorm.nfc(str);
+         } else if (form === "NFD") {
+            return unorm.nfd(str);
+         } else if (form === "NFKC") {
+            return unorm.nfkc(str);
+         } else if (form === "NFKD") {
+            return unorm.nfkd(str);
+         } else {
+            throw new RangeError("Invalid normalization form: " + form);
+         }
+      };
+
+      unorm.shimApplied = true;
+   }
+}(this));
+</script>
+        <script>/*!
+ * jQuery JavaScript Library v3.2.1
+ * https://jquery.com/
+ *
+ * Includes Sizzle.js
+ * https://sizzlejs.com/
+ *
+ * Copyright JS Foundation and other contributors
+ * Released under the MIT license
+ * https://jquery.org/license
+ *
+ * Date: 2017-03-20T18:59Z
+ */
+( function( global, factory ) {
+
+       "use strict";
+
+       if ( typeof module === "object" && typeof module.exports === "object" ) {
+
+               // For CommonJS and CommonJS-like environments where a proper `window`
+               // is present, execute the factory and get jQuery.
+               // For environments that do not have a `window` with a `document`
+               // (such as Node.js), expose a factory as module.exports.
+               // This accentuates the need for the creation of a real `window`.
+               // e.g. var jQuery = require("jquery")(window);
+               // See ticket #14549 for more info.
+               module.exports = global.document ?
+                       factory( global, true ) :
+                       function( w ) {
+                               if ( !w.document ) {
+                                       throw new Error( "jQuery requires a window with a document" );
+                               }
+                               return factory( w );
+                       };
+       } else {
+               factory( global );
+       }
+
+// Pass this if window is not defined yet
+} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
+
+// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
+// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
+// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
+// enough that all such attempts are guarded in a try block.
+"use strict";
+
+var arr = [];
+
+var document = window.document;
+
+var getProto = Object.getPrototypeOf;
+
+var slice = arr.slice;
+
+var concat = arr.concat;
+
+var push = arr.push;
+
+var indexOf = arr.indexOf;
+
+var class2type = {};
+
+var toString = class2type.toString;
+
+var hasOwn = class2type.hasOwnProperty;
+
+var fnToString = hasOwn.toString;
+
+var ObjectFunctionString = fnToString.call( Object );
+
+var support = {};
+
+
+
+       function DOMEval( code, doc ) {
+               doc = doc || document;
+
+               var script = doc.createElement( "script" );
+
+               script.text = code;
+               doc.head.appendChild( script ).parentNode.removeChild( script );
+       }
+/* global Symbol */
+// Defining this global in .eslintrc.json would create a danger of using the global
+// unguarded in another place, it seems safer to define global only for this module
+
+
+
+var
+       version = "3.2.1",
+
+       // Define a local copy of jQuery
+       jQuery = function( selector, context ) {
+
+               // The jQuery object is actually just the init constructor 'enhanced'
+               // Need init if jQuery is called (just allow error to be thrown if not included)
+               return new jQuery.fn.init( selector, context );
+       },
+
+       // Support: Android <=4.0 only
+       // Make sure we trim BOM and NBSP
+       rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
+
+       // Matches dashed string for camelizing
+       rmsPrefix = /^-ms-/,
+       rdashAlpha = /-([a-z])/g,
+
+       // Used by jQuery.camelCase as callback to replace()
+       fcamelCase = function( all, letter ) {
+               return letter.toUpperCase();
+       };
+
+jQuery.fn = jQuery.prototype = {
+
+       // The current version of jQuery being used
+       jquery: version,
+
+       constructor: jQuery,
+
+       // The default length of a jQuery object is 0
+       length: 0,
+
+       toArray: function() {
+               return slice.call( this );
+       },
+
+       // Get the Nth element in the matched element set OR
+       // Get the whole matched element set as a clean array
+       get: function( num ) {
+
+               // Return all the elements in a clean array
+               if ( num == null ) {
+                       return slice.call( this );
+               }
+
+               // Return just the one element from the set
+               return num < 0 ? this[ num + this.length ] : this[ num ];
+       },
+
+       // Take an array of elements and push it onto the stack
+       // (returning the new matched element set)
+       pushStack: function( elems ) {
+
+               // Build a new jQuery matched element set
+               var ret = jQuery.merge( this.constructor(), elems );
+
+               // Add the old object onto the stack (as a reference)
+               ret.prevObject = this;
+
+               // Return the newly-formed element set
+               return ret;
+       },
+
+       // Execute a callback for every element in the matched set.
+       each: function( callback ) {
+               return jQuery.each( this, callback );
+       },
+
+       map: function( callback ) {
+               return this.pushStack( jQuery.map( this, function( elem, i ) {
+                       return callback.call( elem, i, elem );
+               } ) );
+       },
+
+       slice: function() {
+               return this.pushStack( slice.apply( this, arguments ) );
+       },
+
+       first: function() {
+               return this.eq( 0 );
+       },
+
+       last: function() {
+               return this.eq( -1 );
+       },
+
+       eq: function( i ) {
+               var len = this.length,
+                       j = +i + ( i < 0 ? len : 0 );
+               return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
+       },
+
+       end: function() {
+               return this.prevObject || this.constructor();
+       },
+
+       // For internal use only.
+       // Behaves like an Array's method, not like a jQuery method.
+       push: push,
+       sort: arr.sort,
+       splice: arr.splice
+};
+
+jQuery.extend = jQuery.fn.extend = function() {
+       var options, name, src, copy, copyIsArray, clone,
+               target = arguments[ 0 ] || {},
+               i = 1,
+               length = arguments.length,
+               deep = false;
+
+       // Handle a deep copy situation
+       if ( typeof target === "boolean" ) {
+               deep = target;
+
+               // Skip the boolean and the target
+               target = arguments[ i ] || {};
+               i++;
+       }
+
+       // Handle case when target is a string or something (possible in deep copy)
+       if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
+               target = {};
+       }
+
+       // Extend jQuery itself if only one argument is passed
+       if ( i === length ) {
+               target = this;
+               i--;
+       }
+
+       for ( ; i < length; i++ ) {
+
+               // Only deal with non-null/undefined values
+               if ( ( options = arguments[ i ] ) != null ) {
+
+                       // Extend the base object
+                       for ( name in options ) {
+                               src = target[ name ];
+                               copy = options[ name ];
+
+                               // Prevent never-ending loop
+                               if ( target === copy ) {
+                                       continue;
+                               }
+
+                               // Recurse if we're merging plain objects or arrays
+                               if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
+                                       ( copyIsArray = Array.isArray( copy ) ) ) ) {
+
+                                       if ( copyIsArray ) {
+                                               copyIsArray = false;
+                                               clone = src && Array.isArray( src ) ? src : [];
+
+                                       } else {
+                                               clone = src && jQuery.isPlainObject( src ) ? src : {};
+                                       }
+
+                                       // Never move original objects, clone them
+                                       target[ name ] = jQuery.extend( deep, clone, copy );
+
+                               // Don't bring in undefined values
+                               } else if ( copy !== undefined ) {
+                                       target[ name ] = copy;
+                               }
+                       }
+               }
+       }
+
+       // Return the modified object
+       return target;
+};
+
+jQuery.extend( {
+
+       // Unique for each copy of jQuery on the page
+       expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),
+
+       // Assume jQuery is ready without the ready module
+       isReady: true,
+
+       error: function( msg ) {
+               throw new Error( msg );
+       },
+
+       noop: function() {},
+
+       isFunction: function( obj ) {
+               return jQuery.type( obj ) === "function";
+       },
+
+       isWindow: function( obj ) {
+               return obj != null && obj === obj.window;
+       },
+
+       isNumeric: function( obj ) {
+
+               // As of jQuery 3.0, isNumeric is limited to
+               // strings and numbers (primitives or objects)
+               // that can be coerced to finite numbers (gh-2662)
+               var type = jQuery.type( obj );
+               return ( type === "number" || type === "string" ) &&
+
+                       // parseFloat NaNs numeric-cast false positives ("")
+                       // ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+                       // subtraction forces infinities to NaN
+                       !isNaN( obj - parseFloat( obj ) );
+       },
+
+       isPlainObject: function( obj ) {
+               var proto, Ctor;
+
+               // Detect obvious negatives
+               // Use toString instead of jQuery.type to catch host objects
+               if ( !obj || toString.call( obj ) !== "[object Object]" ) {
+                       return false;
+               }
+
+               proto = getProto( obj );
+
+               // Objects with no prototype (e.g., `Object.create( null )`) are plain
+               if ( !proto ) {
+                       return true;
+               }
+
+               // Objects with prototype are plain iff they were constructed by a global Object function
+               Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
+               return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
+       },
+
+       isEmptyObject: function( obj ) {
+
+               /* eslint-disable no-unused-vars */
+               // See https://github.com/eslint/eslint/issues/6125
+               var name;
+
+               for ( name in obj ) {
+                       return false;
+               }
+               return true;
+       },
+
+       type: function( obj ) {
+               if ( obj == null ) {
+                       return obj + "";
+               }
+
+               // Support: Android <=2.3 only (functionish RegExp)
+               return typeof obj === "object" || typeof obj === "function" ?
+                       class2type[ toString.call( obj ) ] || "object" :
+                       typeof obj;
+       },
+
+       // Evaluates a script in a global context
+       globalEval: function( code ) {
+               DOMEval( code );
+       },
+
+       // Convert dashed to camelCase; used by the css and data modules
+       // Support: IE <=9 - 11, Edge 12 - 13
+       // Microsoft forgot to hump their vendor prefix (#9572)
+       camelCase: function( string ) {
+               return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+       },
+
+       each: function( obj, callback ) {
+               var length, i = 0;
+
+               if ( isArrayLike( obj ) ) {
+                       length = obj.length;
+                       for ( ; i < length; i++ ) {
+                               if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
+                                       break;
+                               }
+                       }
+               } else {
+                       for ( i in obj ) {
+                               if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
+                                       break;
+                               }
+                       }
+               }
+
+               return obj;
+       },
+
+       // Support: Android <=4.0 only
+       trim: function( text ) {
+               return text == null ?
+                       "" :
+                       ( text + "" ).replace( rtrim, "" );
+       },
+
+       // results is for internal usage only
+       makeArray: function( arr, results ) {
+               var ret = results || [];
+
+               if ( arr != null ) {
+                       if ( isArrayLike( Object( arr ) ) ) {
+                               jQuery.merge( ret,
+                                       typeof arr === "string" ?
+                                       [ arr ] : arr
+                               );
+                       } else {
+                               push.call( ret, arr );
+                       }
+               }
+
+               return ret;
+       },
+
+       inArray: function( elem, arr, i ) {
+               return arr == null ? -1 : indexOf.call( arr, elem, i );
+       },
+
+       // Support: Android <=4.0 only, PhantomJS 1 only
+       // push.apply(_, arraylike) throws on ancient WebKit
+       merge: function( first, second ) {
+               var len = +second.length,
+                       j = 0,
+                       i = first.length;
+
+               for ( ; j < len; j++ ) {
+                       first[ i++ ] = second[ j ];
+               }
+
+               first.length = i;
+
+               return first;
+       },
+
+       grep: function( elems, callback, invert ) {
+               var callbackInverse,
+                       matches = [],
+                       i = 0,
+                       length = elems.length,
+                       callbackExpect = !invert;
+
+               // Go through the array, only saving the items
+               // that pass the validator function
+               for ( ; i < length; i++ ) {
+                       callbackInverse = !callback( elems[ i ], i );
+                       if ( callbackInverse !== callbackExpect ) {
+                               matches.push( elems[ i ] );
+                       }
+               }
+
+               return matches;
+       },
+
+       // arg is for internal usage only
+       map: function( elems, callback, arg ) {
+               var length, value,
+                       i = 0,
+                       ret = [];
+
+               // Go through the array, translating each of the items to their new values
+               if ( isArrayLike( elems ) ) {
+                       length = elems.length;
+                       for ( ; i < length; i++ ) {
+                               value = callback( elems[ i ], i, arg );
+
+                               if ( value != null ) {
+                                       ret.push( value );
+                               }
+                       }
+
+               // Go through every key on the object,
+               } else {
+                       for ( i in elems ) {
+                               value = callback( elems[ i ], i, arg );
+
+                               if ( value != null ) {
+                                       ret.push( value );
+                               }
+                       }
+               }
+
+               // Flatten any nested arrays
+               return concat.apply( [], ret );
+       },
+
+       // A global GUID counter for objects
+       guid: 1,
+
+       // Bind a function to a context, optionally partially applying any
+       // arguments.
+       proxy: function( fn, context ) {
+               var tmp, args, proxy;
+
+               if ( typeof context === "string" ) {
+                       tmp = fn[ context ];
+                       context = fn;
+                       fn = tmp;
+               }
+
+               // Quick check to determine if target is callable, in the spec
+               // this throws a TypeError, but we will just return undefined.
+               if ( !jQuery.isFunction( fn ) ) {
+                       return undefined;
+               }
+
+               // Simulated bind
+               args = slice.call( arguments, 2 );
+               proxy = function() {
+                       return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
+               };
+
+               // Set the guid of unique handler to the same of original handler, so it can be removed
+               proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+               return proxy;
+       },
+
+       now: Date.now,
+
+       // jQuery.support is not used in Core but other projects attach their
+       // properties to it so it needs to exist.
+       support: support
+} );
+
+if ( typeof Symbol === "function" ) {
+       jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
+}
+
+// Populate the class2type map
+jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
+function( i, name ) {
+       class2type[ "[object " + name + "]" ] = name.toLowerCase();
+} );
+
+function isArrayLike( obj ) {
+
+       // Support: real iOS 8.2 only (not reproducible in simulator)
+       // `in` check used to prevent JIT error (gh-2145)
+       // hasOwn isn't used here due to false negatives
+       // regarding Nodelist length in IE
+       var length = !!obj && "length" in obj && obj.length,
+               type = jQuery.type( obj );
+
+       if ( type === "function" || jQuery.isWindow( obj ) ) {
+               return false;
+       }
+
+       return type === "array" || length === 0 ||
+               typeof length === "number" && length > 0 && ( length - 1 ) in obj;
+}
+var Sizzle =
+/*!
+ * Sizzle CSS Selector Engine v2.3.3
+ * https://sizzlejs.com/
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2016-08-08
+ */
+(function( window ) {
+
+var i,
+       support,
+       Expr,
+       getText,
+       isXML,
+       tokenize,
+       compile,
+       select,
+       outermostContext,
+       sortInput,
+       hasDuplicate,
+
+       // Local document vars
+       setDocument,
+       document,
+       docElem,
+       documentIsHTML,
+       rbuggyQSA,
+       rbuggyMatches,
+       matches,
+       contains,
+
+       // Instance-specific data
+       expando = "sizzle" + 1 * new Date(),
+       preferredDoc = window.document,
+       dirruns = 0,
+       done = 0,
+       classCache = createCache(),
+       tokenCache = createCache(),
+       compilerCache = createCache(),
+       sortOrder = function( a, b ) {
+               if ( a === b ) {
+                       hasDuplicate = true;
+               }
+               return 0;
+       },
+
+       // Instance methods
+       hasOwn = ({}).hasOwnProperty,
+       arr = [],
+       pop = arr.pop,
+       push_native = arr.push,
+       push = arr.push,
+       slice = arr.slice,
+       // Use a stripped-down indexOf as it's faster than native
+       // https://jsperf.com/thor-indexof-vs-for/5
+       indexOf = function( list, elem ) {
+               var i = 0,
+                       len = list.length;
+               for ( ; i < len; i++ ) {
+                       if ( list[i] === elem ) {
+                               return i;
+                       }
+               }
+               return -1;
+       },
+
+       booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
+
+       // Regular expressions
+
+       // http://www.w3.org/TR/css3-selectors/#whitespace
+       whitespace = "[\\x20\\t\\r\\n\\f]",
+
+       // http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+       identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
+
+       // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
+       attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
+               // Operator (capture 2)
+               "*([*^$|!~]?=)" + whitespace +
+               // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
+               "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
+               "*\\]",
+
+       pseudos = ":(" + identifier + ")(?:\\((" +
+               // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
+               // 1. quoted (capture 3; capture 4 or capture 5)
+               "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
+               // 2. simple (capture 6)
+               "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
+               // 3. anything else (capture 2)
+               ".*" +
+               ")\\)|)",
+
+       // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+       rwhitespace = new RegExp( whitespace + "+", "g" ),
+       rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),
+
+       rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
+       rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),
+
+       rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),
+
+       rpseudo = new RegExp( pseudos ),
+       ridentifier = new RegExp( "^" + identifier + "$" ),
+
+       matchExpr = {
+               "ID": new RegExp( "^#(" + identifier + ")" ),
+               "CLASS": new RegExp( "^\\.(" + identifier + ")" ),
+               "TAG": new RegExp( "^(" + identifier + "|[*])" ),
+               "ATTR": new RegExp( "^" + attributes ),
+               "PSEUDO": new RegExp( "^" + pseudos ),
+               "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
+                       "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+                       "*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
+               "bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
+               // For use in libraries implementing .is()
+               // We use this for POS matching in `select`
+               "needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
+                       whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
+       },
+
+       rinputs = /^(?:input|select|textarea|button)$/i,
+       rheader = /^h\d$/i,
+
+       rnative = /^[^{]+\{\s*\[native \w/,
+
+       // Easily-parseable/retrievable ID or TAG or CLASS selectors
+       rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
+
+       rsibling = /[+~]/,
+
+       // CSS escapes
+       // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
+       runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
+       funescape = function( _, escaped, escapedWhitespace ) {
+               var high = "0x" + escaped - 0x10000;
+               // NaN means non-codepoint
+               // Support: Firefox<24
+               // Workaround erroneous numeric interpretation of +"0x"
+               return high !== high || escapedWhitespace ?
+                       escaped :
+                       high < 0 ?
+                               // BMP codepoint
+                               String.fromCharCode( high + 0x10000 ) :
+                               // Supplemental Plane codepoint (surrogate pair)
+                               String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
+       },
+
+       // CSS string/identifier serialization
+       // https://drafts.csswg.org/cssom/#common-serializing-idioms
+       rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
+       fcssescape = function( ch, asCodePoint ) {
+               if ( asCodePoint ) {
+
+                       // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+                       if ( ch === "\0" ) {
+                               return "\uFFFD";
+                       }
+
+                       // Control characters and (dependent upon position) numbers get escaped as code points
+                       return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
+               }
+
+               // Other potentially-special ASCII characters get backslash-escaped
+               return "\\" + ch;
+       },
+
+       // Used for iframes
+       // See setDocument()
+       // Removing the function wrapper causes a "Permission Denied"
+       // error in IE
+       unloadHandler = function() {
+               setDocument();
+       },
+
+       disabledAncestor = addCombinator(
+               function( elem ) {
+                       return elem.disabled === true && ("form" in elem || "label" in elem);
+               },
+               { dir: "parentNode", next: "legend" }
+       );
+
+// Optimize for push.apply( _, NodeList )
+try {
+       push.apply(
+               (arr = slice.call( preferredDoc.childNodes )),
+               preferredDoc.childNodes
+       );
+       // Support: Android<4.0
+       // Detect silently failing push.apply
+       arr[ preferredDoc.childNodes.length ].nodeType;
+} catch ( e ) {
+       push = { apply: arr.length ?
+
+               // Leverage slice if possible
+               function( target, els ) {
+                       push_native.apply( target, slice.call(els) );
+               } :
+
+               // Support: IE<9
+               // Otherwise append directly
+               function( target, els ) {
+                       var j = target.length,
+                               i = 0;
+                       // Can't trust NodeList.length
+                       while ( (target[j++] = els[i++]) ) {}
+                       target.length = j - 1;
+               }
+       };
+}
+
+function Sizzle( selector, context, results, seed ) {
+       var m, i, elem, nid, match, groups, newSelector,
+               newContext = context && context.ownerDocument,
+
+               // nodeType defaults to 9, since context defaults to document
+               nodeType = context ? context.nodeType : 9;
+
+       results = results || [];
+
+       // Return early from calls with invalid selector or context
+       if ( typeof selector !== "string" || !selector ||
+               nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {
+
+               return results;
+       }
+
+       // Try to shortcut find operations (as opposed to filters) in HTML documents
+       if ( !seed ) {
+
+               if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
+                       setDocument( context );
+               }
+               context = context || document;
+
+               if ( documentIsHTML ) {
+
+                       // If the selector is sufficiently simple, try using a "get*By*" DOM method
+                       // (excepting DocumentFragment context, where the methods don't exist)
+                       if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {
+
+                               // ID selector
+                               if ( (m = match[1]) ) {
+
+                                       // Document context
+                                       if ( nodeType === 9 ) {
+                                               if ( (elem = context.getElementById( m )) ) {
+
+                                                       // Support: IE, Opera, Webkit
+                                                       // TODO: identify versions
+                                                       // getElementById can match elements by name instead of ID
+                                                       if ( elem.id === m ) {
+                                                               results.push( elem );
+                                                               return results;
+                                                       }
+                                               } else {
+                                                       return results;
+                                               }
+
+                                       // Element context
+                                       } else {
+
+                                               // Support: IE, Opera, Webkit
+                                               // TODO: identify versions
+                                               // getElementById can match elements by name instead of ID
+                                               if ( newContext && (elem = newContext.getElementById( m )) &&
+                                                       contains( context, elem ) &&
+                                                       elem.id === m ) {
+
+                                                       results.push( elem );
+                                                       return results;
+                                               }
+                                       }
+
+                               // Type selector
+                               } else if ( match[2] ) {
+                                       push.apply( results, context.getElementsByTagName( selector ) );
+                                       return results;
+
+                               // Class selector
+                               } else if ( (m = match[3]) && support.getElementsByClassName &&
+                                       context.getElementsByClassName ) {
+
+                                       push.apply( results, context.getElementsByClassName( m ) );
+                                       return results;
+                               }
+                       }
+
+                       // Take advantage of querySelectorAll
+                       if ( support.qsa &&
+                               !compilerCache[ selector + " " ] &&
+                               (!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
+
+                               if ( nodeType !== 1 ) {
+                                       newContext = context;
+                                       newSelector = selector;
+
+                               // qSA looks outside Element context, which is not what we want
+                               // Thanks to Andrew Dupont for this workaround technique
+                               // Support: IE <=8
+                               // Exclude object elements
+                               } else if ( context.nodeName.toLowerCase() !== "object" ) {
+
+                                       // Capture the context ID, setting it first if necessary
+                                       if ( (nid = context.getAttribute( "id" )) ) {
+                                               nid = nid.replace( rcssescape, fcssescape );
+                                       } else {
+                                               context.setAttribute( "id", (nid = expando) );
+                                       }
+
+                                       // Prefix every selector in the list
+                                       groups = tokenize( selector );
+                                       i = groups.length;
+                                       while ( i-- ) {
+                                               groups[i] = "#" + nid + " " + toSelector( groups[i] );
+                                       }
+                                       newSelector = groups.join( "," );
+
+                                       // Expand context for sibling selectors
+                                       newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
+                                               context;
+                               }
+
+                               if ( newSelector ) {
+                                       try {
+                                               push.apply( results,
+                                                       newContext.querySelectorAll( newSelector )
+                                               );
+                                               return results;
+                                       } catch ( qsaError ) {
+                                       } finally {
+                                               if ( nid === expando ) {
+                                                       context.removeAttribute( "id" );
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       // All others
+       return select( selector.replace( rtrim, "$1" ), context, results, seed );
+}
+
+/**
+ * Create key-value caches of limited size
+ * @returns {function(string, object)} Returns the Object data after storing it on itself with
+ *     property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
+ *     deleting the oldest entry
+ */
+function createCache() {
+       var keys = [];
+
+       function cache( key, value ) {
+               // Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+               if ( keys.push( key + " " ) > Expr.cacheLength ) {
+                       // Only keep the most recent entries
+                       delete cache[ keys.shift() ];
+               }
+               return (cache[ key + " " ] = value);
+       }
+       return cache;
+}
+
+/**
+ * Mark a function for special use by Sizzle
+ * @param {Function} fn The function to mark
+ */
+function markFunction( fn ) {
+       fn[ expando ] = true;
+       return fn;
+}
+
+/**
+ * Support testing using an element
+ * @param {Function} fn Passed the created element and returns a boolean result
+ */
+function assert( fn ) {
+       var el = document.createElement("fieldset");
+
+       try {
+               return !!fn( el );
+       } catch (e) {
+               return false;
+       } finally {
+               // Remove from its parent by default
+               if ( el.parentNode ) {
+                       el.parentNode.removeChild( el );
+               }
+               // release memory in IE
+               el = null;
+       }
+}
+
+/**
+ * Adds the same handler for all of the specified attrs
+ * @param {String} attrs Pipe-separated list of attributes
+ * @param {Function} handler The method that will be applied
+ */
+function addHandle( attrs, handler ) {
+       var arr = attrs.split("|"),
+               i = arr.length;
+
+       while ( i-- ) {
+               Expr.attrHandle[ arr[i] ] = handler;
+       }
+}
+
+/**
+ * Checks document order of two siblings
+ * @param {Element} a
+ * @param {Element} b
+ * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
+ */
+function siblingCheck( a, b ) {
+       var cur = b && a,
+               diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
+                       a.sourceIndex - b.sourceIndex;
+
+       // Use IE sourceIndex if available on both nodes
+       if ( diff ) {
+               return diff;
+       }
+
+       // Check if b follows a
+       if ( cur ) {
+               while ( (cur = cur.nextSibling) ) {
+                       if ( cur === b ) {
+                               return -1;
+                       }
+               }
+       }
+
+       return a ? 1 : -1;
+}
+
+/**
+ * Returns a function to use in pseudos for input types
+ * @param {String} type
+ */
+function createInputPseudo( type ) {
+       return function( elem ) {
+               var name = elem.nodeName.toLowerCase();
+               return name === "input" && elem.type === type;
+       };
+}
+
+/**
+ * Returns a function to use in pseudos for buttons
+ * @param {String} type
+ */
+function createButtonPseudo( type ) {
+       return function( elem ) {
+               var name = elem.nodeName.toLowerCase();
+               return (name === "input" || name === "button") && elem.type === type;
+       };
+}
+
+/**
+ * Returns a function to use in pseudos for :enabled/:disabled
+ * @param {Boolean} disabled true for :disabled; false for :enabled
+ */
+function createDisabledPseudo( disabled ) {
+
+       // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
+       return function( elem ) {
+
+               // Only certain elements can match :enabled or :disabled
+               // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
+               // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
+               if ( "form" in elem ) {
+
+                       // Check for inherited disabledness on relevant non-disabled elements:
+                       // * listed form-associated elements in a disabled fieldset
+                       //   https://html.spec.whatwg.org/multipage/forms.html#category-listed
+                       //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
+                       // * option elements in a disabled optgroup
+                       //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
+                       // All such elements have a "form" property.
+                       if ( elem.parentNode && elem.disabled === false ) {
+
+                               // Option elements defer to a parent optgroup if present
+                               if ( "label" in elem ) {
+                                       if ( "label" in elem.parentNode ) {
+                                               return elem.parentNode.disabled === disabled;
+                                       } else {
+                                               return elem.disabled === disabled;
+                                       }
+                               }
+
+                               // Support: IE 6 - 11
+                               // Use the isDisabled shortcut property to check for disabled fieldset ancestors
+                               return elem.isDisabled === disabled ||
+
+                                       // Where there is no isDisabled, check manually
+                                       /* jshint -W018 */
+                                       elem.isDisabled !== !disabled &&
+                                               disabledAncestor( elem ) === disabled;
+                       }
+
+                       return elem.disabled === disabled;
+
+               // Try to winnow out elements that can't be disabled before trusting the disabled property.
+               // Some victims get caught in our net (label, legend, menu, track), but it shouldn't
+               // even exist on them, let alone have a boolean value.
+               } else if ( "label" in elem ) {
+                       return elem.disabled === disabled;
+               }
+
+               // Remaining elements are neither :enabled nor :disabled
+               return false;
+       };
+}
+
+/**
+ * Returns a function to use in pseudos for positionals
+ * @param {Function} fn
+ */
+function createPositionalPseudo( fn ) {
+       return markFunction(function( argument ) {
+               argument = +argument;
+               return markFunction(function( seed, matches ) {
+                       var j,
+                               matchIndexes = fn( [], seed.length, argument ),
+                               i = matchIndexes.length;
+
+                       // Match elements found at the specified indexes
+                       while ( i-- ) {
+                               if ( seed[ (j = matchIndexes[i]) ] ) {
+                                       seed[j] = !(matches[j] = seed[j]);
+                               }
+                       }
+               });
+       });
+}
+
+/**
+ * Checks a node for validity as a Sizzle context
+ * @param {Element|Object=} context
+ * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
+ */
+function testContext( context ) {
+       return context && typeof context.getElementsByTagName !== "undefined" && context;
+}
+
+// Expose support vars for convenience
+support = Sizzle.support = {};
+
+/**
+ * Detects XML nodes
+ * @param {Element|Object} elem An element or a document
+ * @returns {Boolean} True iff elem is a non-HTML XML node
+ */
+isXML = Sizzle.isXML = function( elem ) {
+       // documentElement is verified for cases where it doesn't yet exist
+       // (such as loading iframes in IE - #4833)
+       var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+       return documentElement ? documentElement.nodeName !== "HTML" : false;
+};
+
+/**
+ * Sets document-related variables once based on the current document
+ * @param {Element|Object} [doc] An element or document object to use to set the document
+ * @returns {Object} Returns the current document
+ */
+setDocument = Sizzle.setDocument = function( node ) {
+       var hasCompare, subWindow,
+               doc = node ? node.ownerDocument || node : preferredDoc;
+
+       // Return early if doc is invalid or already selected
+       if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
+               return document;
+       }
+
+       // Update global variables
+       document = doc;
+       docElem = document.documentElement;
+       documentIsHTML = !isXML( document );
+
+       // Support: IE 9-11, Edge
+       // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
+       if ( preferredDoc !== document &&
+               (subWindow = document.defaultView) && subWindow.top !== subWindow ) {
+
+               // Support: IE 11, Edge
+               if ( subWindow.addEventListener ) {
+                       subWindow.addEventListener( "unload", unloadHandler, false );
+
+               // Support: IE 9 - 10 only
+               } else if ( subWindow.attachEvent ) {
+                       subWindow.attachEvent( "onunload", unloadHandler );
+               }
+       }
+
+       /* Attributes
+       ---------------------------------------------------------------------- */
+
+       // Support: IE<8
+       // Verify that getAttribute really returns attributes and not properties
+       // (excepting IE8 booleans)
+       support.attributes = assert(function( el ) {
+               el.className = "i";
+               return !el.getAttribute("className");
+       });
+
+       /* getElement(s)By*
+       ---------------------------------------------------------------------- */
+
+       // Check if getElementsByTagName("*") returns only elements
+       support.getElementsByTagName = assert(function( el ) {
+               el.appendChild( document.createComment("") );
+               return !el.getElementsByTagName("*").length;
+       });
+
+       // Support: IE<9
+       support.getElementsByClassName = rnative.test( document.getElementsByClassName );
+
+       // Support: IE<10
+       // Check if getElementById returns elements by name
+       // The broken getElementById methods don't pick up programmatically-set names,
+       // so use a roundabout getElementsByName test
+       support.getById = assert(function( el ) {
+               docElem.appendChild( el ).id = expando;
+               return !document.getElementsByName || !document.getElementsByName( expando ).length;
+       });
+
+       // ID filter and find
+       if ( support.getById ) {
+               Expr.filter["ID"] = function( id ) {
+                       var attrId = id.replace( runescape, funescape );
+                       return function( elem ) {
+                               return elem.getAttribute("id") === attrId;
+                       };
+               };
+               Expr.find["ID"] = function( id, context ) {
+                       if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
+                               var elem = context.getElementById( id );
+                               return elem ? [ elem ] : [];
+                       }
+               };
+       } else {
+               Expr.filter["ID"] =  function( id ) {
+                       var attrId = id.replace( runescape, funescape );
+                       return function( elem ) {
+                               var node = typeof elem.getAttributeNode !== "undefined" &&
+                                       elem.getAttributeNode("id");
+                               return node && node.value === attrId;
+                       };
+               };
+
+               // Support: IE 6 - 7 only
+               // getElementById is not reliable as a find shortcut
+               Expr.find["ID"] = function( id, context ) {
+                       if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
+                               var node, i, elems,
+                                       elem = context.getElementById( id );
+
+                               if ( elem ) {
+
+                                       // Verify the id attribute
+                                       node = elem.getAttributeNode("id");
+                                       if ( node && node.value === id ) {
+                                               return [ elem ];
+                                       }
+
+                                       // Fall back on getElementsByName
+                                       elems = context.getElementsByName( id );
+                                       i = 0;
+                                       while ( (elem = elems[i++]) ) {
+                                               node = elem.getAttributeNode("id");
+                                               if ( node && node.value === id ) {
+                                                       return [ elem ];
+                                               }
+                                       }
+                               }
+
+                               return [];
+                       }
+               };
+       }
+
+       // Tag
+       Expr.find["TAG"] = support.getElementsByTagName ?
+               function( tag, context ) {
+                       if ( typeof context.getElementsByTagName !== "undefined" ) {
+                               return context.getElementsByTagName( tag );
+
+                       // DocumentFragment nodes don't have gEBTN
+                       } else if ( support.qsa ) {
+                               return context.querySelectorAll( tag );
+                       }
+               } :
+
+               function( tag, context ) {
+                       var elem,
+                               tmp = [],
+                               i = 0,
+                               // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
+                               results = context.getElementsByTagName( tag );
+
+                       // Filter out possible comments
+                       if ( tag === "*" ) {
+                               while ( (elem = results[i++]) ) {
+                                       if ( elem.nodeType === 1 ) {
+                                               tmp.push( elem );
+                                       }
+                               }
+
+                               return tmp;
+                       }
+                       return results;
+               };
+
+       // Class
+       Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
+               if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
+                       return context.getElementsByClassName( className );
+               }
+       };
+
+       /* QSA/matchesSelector
+       ---------------------------------------------------------------------- */
+
+       // QSA and matchesSelector support
+
+       // matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+       rbuggyMatches = [];
+
+       // qSa(:focus) reports false when true (Chrome 21)
+       // We allow this because of a bug in IE8/9 that throws an error
+       // whenever `document.activeElement` is accessed on an iframe
+       // So, we allow :focus to pass through QSA all the time to avoid the IE error
+       // See https://bugs.jquery.com/ticket/13378
+       rbuggyQSA = [];
+
+       if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
+               // Build QSA regex
+               // Regex strategy adopted from Diego Perini
+               assert(function( el ) {
+                       // Select is set to empty string on purpose
+                       // This is to test IE's treatment of not explicitly
+                       // setting a boolean content attribute,
+                       // since its presence should be enough
+                       // https://bugs.jquery.com/ticket/12359
+                       docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
+                               "<select id='" + expando + "-\r\\' msallowcapture=''>" +
+                               "<option selected=''></option></select>";
+
+                       // Support: IE8, Opera 11-12.16
+                       // Nothing should be selected when empty strings follow ^= or $= or *=
+                       // The test attribute must be unknown in Opera but "safe" for WinRT
+                       // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
+                       if ( el.querySelectorAll("[msallowcapture^='']").length ) {
+                               rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
+                       }
+
+                       // Support: IE8
+                       // Boolean attributes and "value" are not treated correctly
+                       if ( !el.querySelectorAll("[selected]").length ) {
+                               rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
+                       }
+
+                       // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
+                       if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
+                               rbuggyQSA.push("~=");
+                       }
+
+                       // Webkit/Opera - :checked should return selected option elements
+                       // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                       // IE8 throws error here and will not see later tests
+                       if ( !el.querySelectorAll(":checked").length ) {
+                               rbuggyQSA.push(":checked");
+                       }
+
+                       // Support: Safari 8+, iOS 8+
+                       // https://bugs.webkit.org/show_bug.cgi?id=136851
+                       // In-page `selector#id sibling-combinator selector` fails
+                       if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
+                               rbuggyQSA.push(".#.+[+~]");
+                       }
+               });
+
+               assert(function( el ) {
+                       el.innerHTML = "<a href='' disabled='disabled'></a>" +
+                               "<select disabled='disabled'><option/></select>";
+
+                       // Support: Windows 8 Native Apps
+                       // The type and name attributes are restricted during .innerHTML assignment
+                       var input = document.createElement("input");
+                       input.setAttribute( "type", "hidden" );
+                       el.appendChild( input ).setAttribute( "name", "D" );
+
+                       // Support: IE8
+                       // Enforce case-sensitivity of name attribute
+                       if ( el.querySelectorAll("[name=d]").length ) {
+                               rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
+                       }
+
+                       // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+                       // IE8 throws error here and will not see later tests
+                       if ( el.querySelectorAll(":enabled").length !== 2 ) {
+                               rbuggyQSA.push( ":enabled", ":disabled" );
+                       }
+
+                       // Support: IE9-11+
+                       // IE's :disabled selector does not pick up the children of disabled fieldsets
+                       docElem.appendChild( el ).disabled = true;
+                       if ( el.querySelectorAll(":disabled").length !== 2 ) {
+                               rbuggyQSA.push( ":enabled", ":disabled" );
+                       }
+
+                       // Opera 10-11 does not throw on post-comma invalid pseudos
+                       el.querySelectorAll("*,:x");
+                       rbuggyQSA.push(",.*:");
+               });
+       }
+
+       if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
+               docElem.webkitMatchesSelector ||
+               docElem.mozMatchesSelector ||
+               docElem.oMatchesSelector ||
+               docElem.msMatchesSelector) )) ) {
+
+               assert(function( el ) {
+                       // Check to see if it's possible to do matchesSelector
+                       // on a disconnected node (IE 9)
+                       support.disconnectedMatch = matches.call( el, "*" );
+
+                       // This should fail with an exception
+                       // Gecko does not error, returns false instead
+                       matches.call( el, "[s!='']:x" );
+                       rbuggyMatches.push( "!=", pseudos );
+               });
+       }
+
+       rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
+       rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );
+
+       /* Contains
+       ---------------------------------------------------------------------- */
+       hasCompare = rnative.test( docElem.compareDocumentPosition );
+
+       // Element contains another
+       // Purposefully self-exclusive
+       // As in, an element does not contain itself
+       contains = hasCompare || rnative.test( docElem.contains ) ?
+               function( a, b ) {
+                       var adown = a.nodeType === 9 ? a.documentElement : a,
+                               bup = b && b.parentNode;
+                       return a === bup || !!( bup && bup.nodeType === 1 && (
+                               adown.contains ?
+                                       adown.contains( bup ) :
+                                       a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
+                       ));
+               } :
+               function( a, b ) {
+                       if ( b ) {
+                               while ( (b = b.parentNode) ) {
+                                       if ( b === a ) {
+                                               return true;
+                                       }
+                               }
+                       }
+                       return false;
+               };
+
+       /* Sorting
+       ---------------------------------------------------------------------- */
+
+       // Document order sorting
+       sortOrder = hasCompare ?
+       function( a, b ) {
+
+               // Flag for duplicate removal
+               if ( a === b ) {
+                       hasDuplicate = true;
+                       return 0;
+               }
+
+               // Sort on method existence if only one input has compareDocumentPosition
+               var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
+               if ( compare ) {
+                       return compare;
+               }
+
+               // Calculate position if both inputs belong to the same document
+               compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
+                       a.compareDocumentPosition( b ) :
+
+                       // Otherwise we know they are disconnected
+                       1;
+
+               // Disconnected nodes
+               if ( compare & 1 ||
+                       (!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {
+
+                       // Choose the first element that is related to our preferred document
+                       if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
+                               return -1;
+                       }
+                       if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
+                               return 1;
+                       }
+
+                       // Maintain original order
+                       return sortInput ?
+                               ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
+                               0;
+               }
+
+               return compare & 4 ? -1 : 1;
+       } :
+       function( a, b ) {
+               // Exit early if the nodes are identical
+               if ( a === b ) {
+                       hasDuplicate = true;
+                       return 0;
+               }
+
+               var cur,
+                       i = 0,
+                       aup = a.parentNode,
+                       bup = b.parentNode,
+                       ap = [ a ],
+                       bp = [ b ];
+
+               // Parentless nodes are either documents or disconnected
+               if ( !aup || !bup ) {
+                       return a === document ? -1 :
+                               b === document ? 1 :
+                               aup ? -1 :
+                               bup ? 1 :
+                               sortInput ?
+                               ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
+                               0;
+
+               // If the nodes are siblings, we can do a quick check
+               } else if ( aup === bup ) {
+                       return siblingCheck( a, b );
+               }
+
+               // Otherwise we need full lists of their ancestors for comparison
+               cur = a;
+               while ( (cur = cur.parentNode) ) {
+                       ap.unshift( cur );
+               }
+               cur = b;
+               while ( (cur = cur.parentNode) ) {
+                       bp.unshift( cur );
+               }
+
+               // Walk down the tree looking for a discrepancy
+               while ( ap[i] === bp[i] ) {
+                       i++;
+               }
+
+               return i ?
+                       // Do a sibling check if the nodes have a common ancestor
+                       siblingCheck( ap[i], bp[i] ) :
+
+                       // Otherwise nodes in our document sort first
+                       ap[i] === preferredDoc ? -1 :
+                       bp[i] === preferredDoc ? 1 :
+                       0;
+       };
+
+       return document;
+};
+
+Sizzle.matches = function( expr, elements ) {
+       return Sizzle( expr, null, null, elements );
+};
+
+Sizzle.matchesSelector = function( elem, expr ) {
+       // Set document vars if needed
+       if ( ( elem.ownerDocument || elem ) !== document ) {
+               setDocument( elem );
+       }
+
+       // Make sure that attribute selectors are quoted
+       expr = expr.replace( rattributeQuotes, "='$1']" );
+
+       if ( support.matchesSelector && documentIsHTML &&
+               !compilerCache[ expr + " " ] &&
+               ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
+               ( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
+
+               try {
+                       var ret = matches.call( elem, expr );
+
+                       // IE 9's matchesSelector returns false on disconnected nodes
+                       if ( ret || support.disconnectedMatch ||
+                                       // As well, disconnected nodes are said to be in a document
+                                       // fragment in IE 9
+                                       elem.document && elem.document.nodeType !== 11 ) {
+                               return ret;
+                       }
+               } catch (e) {}
+       }
+
+       return Sizzle( expr, document, null, [ elem ] ).length > 0;
+};
+
+Sizzle.contains = function( context, elem ) {
+       // Set document vars if needed
+       if ( ( context.ownerDocument || context ) !== document ) {
+               setDocument( context );
+       }
+       return contains( context, elem );
+};
+
+Sizzle.attr = function( elem, name ) {
+       // Set document vars if needed
+       if ( ( elem.ownerDocument || elem ) !== document ) {
+               setDocument( elem );
+       }
+
+       var fn = Expr.attrHandle[ name.toLowerCase() ],
+               // Don't get fooled by Object.prototype properties (jQuery #13807)
+               val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
+                       fn( elem, name, !documentIsHTML ) :
+                       undefined;
+
+       return val !== undefined ?
+               val :
+               support.attributes || !documentIsHTML ?
+                       elem.getAttribute( name ) :
+                       (val = elem.getAttributeNode(name)) && val.specified ?
+                               val.value :
+                               null;
+};
+
+Sizzle.escape = function( sel ) {
+       return (sel + "").replace( rcssescape, fcssescape );
+};
+
+Sizzle.error = function( msg ) {
+       throw new Error( "Syntax error, unrecognized expression: " + msg );
+};
+
+/**
+ * Document sorting and removing duplicates
+ * @param {ArrayLike} results
+ */
+Sizzle.uniqueSort = function( results ) {
+       var elem,
+               duplicates = [],
+               j = 0,
+               i = 0;
+
+       // Unless we *know* we can detect duplicates, assume their presence
+       hasDuplicate = !support.detectDuplicates;
+       sortInput = !support.sortStable && results.slice( 0 );
+       results.sort( sortOrder );
+
+       if ( hasDuplicate ) {
+               while ( (elem = results[i++]) ) {
+                       if ( elem === results[ i ] ) {
+                               j = duplicates.push( i );
+                       }
+               }
+               while ( j-- ) {
+                       results.splice( duplicates[ j ], 1 );
+               }
+       }
+
+       // Clear input after sorting to release objects
+       // See https://github.com/jquery/sizzle/pull/225
+       sortInput = null;
+
+       return results;
+};
+
+/**
+ * Utility function for retrieving the text value of an array of DOM nodes
+ * @param {Array|Element} elem
+ */
+getText = Sizzle.getText = function( elem ) {
+       var node,
+               ret = "",
+               i = 0,
+               nodeType = elem.nodeType;
+
+       if ( !nodeType ) {
+               // If no nodeType, this is expected to be an array
+               while ( (node = elem[i++]) ) {
+                       // Do not traverse comment nodes
+                       ret += getText( node );
+               }
+       } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
+               // Use textContent for elements
+               // innerText usage removed for consistency of new lines (jQuery #11153)
+               if ( typeof elem.textContent === "string" ) {
+                       return elem.textContent;
+               } else {
+                       // Traverse its children
+                       for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+                               ret += getText( elem );
+                       }
+               }
+       } else if ( nodeType === 3 || nodeType === 4 ) {
+               return elem.nodeValue;
+       }
+       // Do not include comment or processing instruction nodes
+
+       return ret;
+};
+
+Expr = Sizzle.selectors = {
+
+       // Can be adjusted by the user
+       cacheLength: 50,
+
+       createPseudo: markFunction,
+
+       match: matchExpr,
+
+       attrHandle: {},
+
+       find: {},
+
+       relative: {
+               ">": { dir: "parentNode", first: true },
+               " ": { dir: "parentNode" },
+               "+": { dir: "previousSibling", first: true },
+               "~": { dir: "previousSibling" }
+       },
+
+       preFilter: {
+               "ATTR": function( match ) {
+                       match[1] = match[1].replace( runescape, funescape );
+
+                       // Move the given value to match[3] whether quoted or unquoted
+                       match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );
+
+                       if ( match[2] === "~=" ) {
+                               match[3] = " " + match[3] + " ";
+                       }
+
+                       return match.slice( 0, 4 );
+               },
+
+               "CHILD": function( match ) {
+                       /* matches from matchExpr["CHILD"]
+                               1 type (only|nth|...)
+                               2 what (child|of-type)
+                               3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+                               4 xn-component of xn+y argument ([+-]?\d*n|)
+                               5 sign of xn-component
+                               6 x of xn-component
+                               7 sign of y-component
+                               8 y of y-component
+                       */
+                       match[1] = match[1].toLowerCase();
+
+                       if ( match[1].slice( 0, 3 ) === "nth" ) {
+                               // nth-* requires argument
+                               if ( !match[3] ) {
+                                       Sizzle.error( match[0] );
+                               }
+
+                               // numeric x and y parameters for Expr.filter.CHILD
+                               // remember that false/true cast respectively to 0/1
+                               match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
+                               match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );
+
+                       // other types prohibit arguments
+                       } else if ( match[3] ) {
+                               Sizzle.error( match[0] );
+                       }
+
+                       return match;
+               },
+
+               "PSEUDO": function( match ) {
+                       var excess,
+                               unquoted = !match[6] && match[2];
+
+                       if ( matchExpr["CHILD"].test( match[0] ) ) {
+                               return null;
+                       }
+
+                       // Accept quoted arguments as-is
+                       if ( match[3] ) {
+                               match[2] = match[4] || match[5] || "";
+
+                       // Strip excess characters from unquoted arguments
+                       } else if ( unquoted && rpseudo.test( unquoted ) &&
+                               // Get excess from tokenize (recursively)
+                               (excess = tokenize( unquoted, true )) &&
+                               // advance to the next closing parenthesis
+                               (excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {
+
+                               // excess is a negative index
+                               match[0] = match[0].slice( 0, excess );
+                               match[2] = unquoted.slice( 0, excess );
+                       }
+
+                       // Return only captures needed by the pseudo filter method (type and argument)
+                       return match.slice( 0, 3 );
+               }
+       },
+
+       filter: {
+
+               "TAG": function( nodeNameSelector ) {
+                       var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
+                       return nodeNameSelector === "*" ?
+                               function() { return true; } :
+                               function( elem ) {
+                                       return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+                               };
+               },
+
+               "CLASS": function( className ) {
+                       var pattern = classCache[ className + " " ];
+
+                       return pattern ||
+                               (pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
+                               classCache( className, function( elem ) {
+                                       return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
+                               });
+               },
+
+               "ATTR": function( name, operator, check ) {
+                       return function( elem ) {
+                               var result = Sizzle.attr( elem, name );
+
+                               if ( result == null ) {
+                                       return operator === "!=";
+                               }
+                               if ( !operator ) {
+                                       return true;
+                               }
+
+                               result += "";
+
+                               return operator === "=" ? result === check :
+                                       operator === "!=" ? result !== check :
+                                       operator === "^=" ? check && result.indexOf( check ) === 0 :
+                                       operator === "*=" ? check && result.indexOf( check ) > -1 :
+                                       operator === "$=" ? check && result.slice( -check.length ) === check :
+                                       operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
+                                       operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
+                                       false;
+                       };
+               },
+
+               "CHILD": function( type, what, argument, first, last ) {
+                       var simple = type.slice( 0, 3 ) !== "nth",
+                               forward = type.slice( -4 ) !== "last",
+                               ofType = what === "of-type";
+
+                       return first === 1 && last === 0 ?
+
+                               // Shortcut for :nth-*(n)
+                               function( elem ) {
+                                       return !!elem.parentNode;
+                               } :
+
+                               function( elem, context, xml ) {
+                                       var cache, uniqueCache, outerCache, node, nodeIndex, start,
+                                               dir = simple !== forward ? "nextSibling" : "previousSibling",
+                                               parent = elem.parentNode,
+                                               name = ofType && elem.nodeName.toLowerCase(),
+                                               useCache = !xml && !ofType,
+                                               diff = false;
+
+                                       if ( parent ) {
+
+                                               // :(first|last|only)-(child|of-type)
+                                               if ( simple ) {
+                                                       while ( dir ) {
+                                                               node = elem;
+                                                               while ( (node = node[ dir ]) ) {
+                                                                       if ( ofType ?
+                                                                               node.nodeName.toLowerCase() === name :
+                                                                               node.nodeType === 1 ) {
+
+                                                                               return false;
+                                                                       }
+                                                               }
+                                                               // Reverse direction for :only-* (if we haven't yet done so)
+                                                               start = dir = type === "only" && !start && "nextSibling";
+                                                       }
+                                                       return true;
+                                               }
+
+                                               start = [ forward ? parent.firstChild : parent.lastChild ];
+
+                                               // non-xml :nth-child(...) stores cache data on `parent`
+                                               if ( forward && useCache ) {
+
+                                                       // Seek `elem` from a previously-cached index
+
+                                                       // ...in a gzip-friendly way
+                                                       node = parent;
+                                                       outerCache = node[ expando ] || (node[ expando ] = {});
+
+                                                       // Support: IE <9 only
+                                                       // Defend against cloned attroperties (jQuery gh-1709)
+                                                       uniqueCache = outerCache[ node.uniqueID ] ||
+                                                               (outerCache[ node.uniqueID ] = {});
+
+                                                       cache = uniqueCache[ type ] || [];
+                                                       nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
+                                                       diff = nodeIndex && cache[ 2 ];
+                                                       node = nodeIndex && parent.childNodes[ nodeIndex ];
+
+                                                       while ( (node = ++nodeIndex && node && node[ dir ] ||
+
+                                                               // Fallback to seeking `elem` from the start
+                                                               (diff = nodeIndex = 0) || start.pop()) ) {
+
+                                                               // When found, cache indexes on `parent` and break
+                                                               if ( node.nodeType === 1 && ++diff && node === elem ) {
+                                                                       uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
+                                                                       break;
+                                                               }
+                                                       }
+
+                                               } else {
+                                                       // Use previously-cached element index if available
+                                                       if ( useCache ) {
+                                                               // ...in a gzip-friendly way
+                                                               node = elem;
+                                                               outerCache = node[ expando ] || (node[ expando ] = {});
+
+                                                               // Support: IE <9 only
+                                                               // Defend against cloned attroperties (jQuery gh-1709)
+                                                               uniqueCache = outerCache[ node.uniqueID ] ||
+                                                                       (outerCache[ node.uniqueID ] = {});
+
+                                                               cache = uniqueCache[ type ] || [];
+                                                               nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
+                                                               diff = nodeIndex;
+                                                       }
+
+                                                       // xml :nth-child(...)
+                                                       // or :nth-last-child(...) or :nth(-last)?-of-type(...)
+                                                       if ( diff === false ) {
+                                                               // Use the same loop as above to seek `elem` from the start
+                                                               while ( (node = ++nodeIndex && node && node[ dir ] ||
+                                                                       (diff = nodeIndex = 0) || start.pop()) ) {
+
+                                                                       if ( ( ofType ?
+                                                                               node.nodeName.toLowerCase() === name :
+                                                                               node.nodeType === 1 ) &&
+                                                                               ++diff ) {
+
+                                                                               // Cache the index of each encountered element
+                                                                               if ( useCache ) {
+                                                                                       outerCache = node[ expando ] || (node[ expando ] = {});
+
+                                                                                       // Support: IE <9 only
+                                                                                       // Defend against cloned attroperties (jQuery gh-1709)
+                                                                                       uniqueCache = outerCache[ node.uniqueID ] ||
+                                                                                               (outerCache[ node.uniqueID ] = {});
+
+                                                                                       uniqueCache[ type ] = [ dirruns, diff ];
+                                                                               }
+
+                                                                               if ( node === elem ) {
+                                                                                       break;
+                                                                               }
+                                                                       }
+                                                               }
+                                                       }
+                                               }
+
+                                               // Incorporate the offset, then check against cycle size
+                                               diff -= last;
+                                               return diff === first || ( diff % first === 0 && diff / first >= 0 );
+                                       }
+                               };
+               },
+
+               "PSEUDO": function( pseudo, argument ) {
+                       // pseudo-class names are case-insensitive
+                       // http://www.w3.org/TR/selectors/#pseudo-classes
+                       // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+                       // Remember that setFilters inherits from pseudos
+                       var args,
+                               fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
+                                       Sizzle.error( "unsupported pseudo: " + pseudo );
+
+                       // The user may use createPseudo to indicate that
+                       // arguments are needed to create the filter function
+                       // just as Sizzle does
+                       if ( fn[ expando ] ) {
+                               return fn( argument );
+                       }
+
+                       // But maintain support for old signatures
+                       if ( fn.length > 1 ) {
+                               args = [ pseudo, pseudo, "", argument ];
+                               return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
+                                       markFunction(function( seed, matches ) {
+                                               var idx,
+                                                       matched = fn( seed, argument ),
+                                                       i = matched.length;
+                                               while ( i-- ) {
+                                                       idx = indexOf( seed, matched[i] );
+                                                       seed[ idx ] = !( matches[ idx ] = matched[i] );
+                                               }
+                                       }) :
+                                       function( elem ) {
+                                               return fn( elem, 0, args );
+                                       };
+                       }
+
+                       return fn;
+               }
+       },
+
+       pseudos: {
+               // Potentially complex pseudos
+               "not": markFunction(function( selector ) {
+                       // Trim the selector passed to compile
+                       // to avoid treating leading and trailing
+                       // spaces as combinators
+                       var input = [],
+                               results = [],
+                               matcher = compile( selector.replace( rtrim, "$1" ) );
+
+                       return matcher[ expando ] ?
+                               markFunction(function( seed, matches, context, xml ) {
+                                       var elem,
+                                               unmatched = matcher( seed, null, xml, [] ),
+                                               i = seed.length;
+
+                                       // Match elements unmatched by `matcher`
+                                       while ( i-- ) {
+                                               if ( (elem = unmatched[i]) ) {
+                                                       seed[i] = !(matches[i] = elem);
+                                               }
+                                       }
+                               }) :
+                               function( elem, context, xml ) {
+                                       input[0] = elem;
+                                       matcher( input, null, xml, results );
+                                       // Don't keep the element (issue #299)
+                                       input[0] = null;
+                                       return !results.pop();
+                               };
+               }),
+
+               "has": markFunction(function( selector ) {
+                       return function( elem ) {
+                               return Sizzle( selector, elem ).length > 0;
+                       };
+               }),
+
+               "contains": markFunction(function( text ) {
+                       text = text.replace( runescape, funescape );
+                       return function( elem ) {
+                               return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
+                       };
+               }),
+
+               // "Whether an element is represented by a :lang() selector
+               // is based solely on the element's language value
+               // being equal to the identifier C,
+               // or beginning with the identifier C immediately followed by "-".
+               // The matching of C against the element's language value is performed case-insensitively.
+               // The identifier C does not have to be a valid language name."
+               // http://www.w3.org/TR/selectors/#lang-pseudo
+               "lang": markFunction( function( lang ) {
+                       // lang value must be a valid identifier
+                       if ( !ridentifier.test(lang || "") ) {
+                               Sizzle.error( "unsupported lang: " + lang );
+                       }
+                       lang = lang.replace( runescape, funescape ).toLowerCase();
+                       return function( elem ) {
+                               var elemLang;
+                               do {
+                                       if ( (elemLang = documentIsHTML ?
+                                               elem.lang :
+                                               elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {
+
+                                               elemLang = elemLang.toLowerCase();
+                                               return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
+                                       }
+                               } while ( (elem = elem.parentNode) && elem.nodeType === 1 );
+                               return false;
+                       };
+               }),
+
+               // Miscellaneous
+               "target": function( elem ) {
+                       var hash = window.location && window.location.hash;
+                       return hash && hash.slice( 1 ) === elem.id;
+               },
+
+               "root": function( elem ) {
+                       return elem === docElem;
+               },
+
+               "focus": function( elem ) {
+                       return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+               },
+
+               // Boolean properties
+               "enabled": createDisabledPseudo( false ),
+               "disabled": createDisabledPseudo( true ),
+
+               "checked": function( elem ) {
+                       // In CSS3, :checked should return both checked and selected elements
+                       // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                       var nodeName = elem.nodeName.toLowerCase();
+                       return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+               },
+
+               "selected": function( elem ) {
+                       // Accessing this property makes selected-by-default
+                       // options in Safari work properly
+                       if ( elem.parentNode ) {
+                               elem.parentNode.selectedIndex;
+                       }
+
+                       return elem.selected === true;
+               },
+
+               // Contents
+               "empty": function( elem ) {
+                       // http://www.w3.org/TR/selectors/#empty-pseudo
+                       // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
+                       //   but not by others (comment: 8; processing instruction: 7; etc.)
+                       // nodeType < 6 works because attributes (2) do not appear as children
+                       for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+                               if ( elem.nodeType < 6 ) {
+                                       return false;
+                               }
+                       }
+                       return true;
+               },
+
+               "parent": function( elem ) {
+                       return !Expr.pseudos["empty"]( elem );
+               },
+
+               // Element/input types
+               "header": function( elem ) {
+                       return rheader.test( elem.nodeName );
+               },
+
+               "input": function( elem ) {
+                       return rinputs.test( elem.nodeName );
+               },
+
+               "button": function( elem ) {
+                       var name = elem.nodeName.toLowerCase();
+                       return name === "input" && elem.type === "button" || name === "button";
+               },
+
+               "text": function( elem ) {
+                       var attr;
+                       return elem.nodeName.toLowerCase() === "input" &&
+                               elem.type === "text" &&
+
+                               // Support: IE<8
+                               // New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
+                               ( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
+               },
+
+               // Position-in-collection
+               "first": createPositionalPseudo(function() {
+                       return [ 0 ];
+               }),
+
+               "last": createPositionalPseudo(function( matchIndexes, length ) {
+                       return [ length - 1 ];
+               }),
+
+               "eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
+                       return [ argument < 0 ? argument + length : argument ];
+               }),
+
+               "even": createPositionalPseudo(function( matchIndexes, length ) {
+                       var i = 0;
+                       for ( ; i < length; i += 2 ) {
+                               matchIndexes.push( i );
+                       }
+                       return matchIndexes;
+               }),
+
+               "odd": createPositionalPseudo(function( matchIndexes, length ) {
+                       var i = 1;
+                       for ( ; i < length; i += 2 ) {
+                               matchIndexes.push( i );
+                       }
+                       return matchIndexes;
+               }),
+
+               "lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+                       var i = argument < 0 ? argument + length : argument;
+                       for ( ; --i >= 0; ) {
+                               matchIndexes.push( i );
+                       }
+                       return matchIndexes;
+               }),
+
+               "gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+                       var i = argument < 0 ? argument + length : argument;
+                       for ( ; ++i < length; ) {
+                               matchIndexes.push( i );
+                       }
+                       return matchIndexes;
+               })
+       }
+};
+
+Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+// Add button/input type pseudos
+for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
+       Expr.pseudos[ i ] = createInputPseudo( i );
+}
+for ( i in { submit: true, reset: true } ) {
+       Expr.pseudos[ i ] = createButtonPseudo( i );
+}
+
+// Easy API for creating new setFilters
+function setFilters() {}
+setFilters.prototype = Expr.filters = Expr.pseudos;
+Expr.setFilters = new setFilters();
+
+tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
+       var matched, match, tokens, type,
+               soFar, groups, preFilters,
+               cached = tokenCache[ selector + " " ];
+
+       if ( cached ) {
+               return parseOnly ? 0 : cached.slice( 0 );
+       }
+
+       soFar = selector;
+       groups = [];
+       preFilters = Expr.preFilter;
+
+       while ( soFar ) {
+
+               // Comma and first run
+               if ( !matched || (match = rcomma.exec( soFar )) ) {
+                       if ( match ) {
+                               // Don't consume trailing commas as valid
+                               soFar = soFar.slice( match[0].length ) || soFar;
+                       }
+                       groups.push( (tokens = []) );
+               }
+
+               matched = false;
+
+               // Combinators
+               if ( (match = rcombinators.exec( soFar )) ) {
+                       matched = match.shift();
+                       tokens.push({
+                               value: matched,
+                               // Cast descendant combinators to space
+                               type: match[0].replace( rtrim, " " )
+                       });
+                       soFar = soFar.slice( matched.length );
+               }
+
+               // Filters
+               for ( type in Expr.filter ) {
+                       if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
+                               (match = preFilters[ type ]( match ))) ) {
+                               matched = match.shift();
+                               tokens.push({
+                                       value: matched,
+                                       type: type,
+                                       matches: match
+                               });
+                               soFar = soFar.slice( matched.length );
+                       }
+               }
+
+               if ( !matched ) {
+                       break;
+               }
+       }
+
+       // Return the length of the invalid excess
+       // if we're just parsing
+       // Otherwise, throw an error or return tokens
+       return parseOnly ?
+               soFar.length :
+               soFar ?
+                       Sizzle.error( selector ) :
+                       // Cache the tokens
+                       tokenCache( selector, groups ).slice( 0 );
+};
+
+function toSelector( tokens ) {
+       var i = 0,
+               len = tokens.length,
+               selector = "";
+       for ( ; i < len; i++ ) {
+               selector += tokens[i].value;
+       }
+       return selector;
+}
+
+function addCombinator( matcher, combinator, base ) {
+       var dir = combinator.dir,
+               skip = combinator.next,
+               key = skip || dir,
+               checkNonElements = base && key === "parentNode",
+               doneName = done++;
+
+       return combinator.first ?
+               // Check against closest ancestor/preceding element
+               function( elem, context, xml ) {
+                       while ( (elem = elem[ dir ]) ) {
+                               if ( elem.nodeType === 1 || checkNonElements ) {
+                                       return matcher( elem, context, xml );
+                               }
+                       }
+                       return false;
+               } :
+
+               // Check against all ancestor/preceding elements
+               function( elem, context, xml ) {
+                       var oldCache, uniqueCache, outerCache,
+                               newCache = [ dirruns, doneName ];
+
+                       // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
+                       if ( xml ) {
+                               while ( (elem = elem[ dir ]) ) {
+                                       if ( elem.nodeType === 1 || checkNonElements ) {
+                                               if ( matcher( elem, context, xml ) ) {
+                                                       return true;
+                                               }
+                                       }
+                               }
+                       } else {
+                               while ( (elem = elem[ dir ]) ) {
+                                       if ( elem.nodeType === 1 || checkNonElements ) {
+                                               outerCache = elem[ expando ] || (elem[ expando ] = {});
+
+                                               // Support: IE <9 only
+                                               // Defend against cloned attroperties (jQuery gh-1709)
+                                               uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});
+
+                                               if ( skip && skip === elem.nodeName.toLowerCase() ) {
+                                                       elem = elem[ dir ] || elem;
+                                               } else if ( (oldCache = uniqueCache[ key ]) &&
+                                                       oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {
+
+                                                       // Assign to newCache so results back-propagate to previous elements
+                                                       return (newCache[ 2 ] = oldCache[ 2 ]);
+                                               } else {
+                                                       // Reuse newcache so results back-propagate to previous elements
+                                                       uniqueCache[ key ] = newCache;
+
+                                                       // A match means we're done; a fail means we have to keep checking
+                                                       if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
+                                                               return true;
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+                       return false;
+               };
+}
+
+function elementMatcher( matchers ) {
+       return matchers.length > 1 ?
+               function( elem, context, xml ) {
+                       var i = matchers.length;
+                       while ( i-- ) {
+                               if ( !matchers[i]( elem, context, xml ) ) {
+                                       return false;
+                               }
+                       }
+                       return true;
+               } :
+               matchers[0];
+}
+
+function multipleContexts( selector, contexts, results ) {
+       var i = 0,
+               len = contexts.length;
+       for ( ; i < len; i++ ) {
+               Sizzle( selector, contexts[i], results );
+       }
+       return results;
+}
+
+function condense( unmatched, map, filter, context, xml ) {
+       var elem,
+               newUnmatched = [],
+               i = 0,
+               len = unmatched.length,
+               mapped = map != null;
+
+       for ( ; i < len; i++ ) {
+               if ( (elem = unmatched[i]) ) {
+                       if ( !filter || filter( elem, context, xml ) ) {
+                               newUnmatched.push( elem );
+                               if ( mapped ) {
+                                       map.push( i );
+                               }
+                       }
+               }
+       }
+
+       return newUnmatched;
+}
+
+function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
+       if ( postFilter && !postFilter[ expando ] ) {
+               postFilter = setMatcher( postFilter );
+       }
+       if ( postFinder && !postFinder[ expando ] ) {
+               postFinder = setMatcher( postFinder, postSelector );
+       }
+       return markFunction(function( seed, results, context, xml ) {
+               var temp, i, elem,
+                       preMap = [],
+                       postMap = [],
+                       preexisting = results.length,
+
+                       // Get initial elements from seed or context
+                       elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),
+
+                       // Prefilter to get matcher input, preserving a map for seed-results synchronization
+                       matcherIn = preFilter && ( seed || !selector ) ?
+                               condense( elems, preMap, preFilter, context, xml ) :
+                               elems,
+
+                       matcherOut = matcher ?
+                               // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+                               postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
+
+                                       // ...intermediate processing is necessary
+                                       [] :
+
+                                       // ...otherwise use results directly
+                                       results :
+                               matcherIn;
+
+               // Find primary matches
+               if ( matcher ) {
+                       matcher( matcherIn, matcherOut, context, xml );
+               }
+
+               // Apply postFilter
+               if ( postFilter ) {
+                       temp = condense( matcherOut, postMap );
+                       postFilter( temp, [], context, xml );
+
+                       // Un-match failing elements by moving them back to matcherIn
+                       i = temp.length;
+                       while ( i-- ) {
+                               if ( (elem = temp[i]) ) {
+                                       matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
+                               }
+                       }
+               }
+
+               if ( seed ) {
+                       if ( postFinder || preFilter ) {
+                               if ( postFinder ) {
+                                       // Get the final matcherOut by condensing this intermediate into postFinder contexts
+                                       temp = [];
+                                       i = matcherOut.length;
+                                       while ( i-- ) {
+                                               if ( (elem = matcherOut[i]) ) {
+                                                       // Restore matcherIn since elem is not yet a final match
+                                                       temp.push( (matcherIn[i] = elem) );
+                                               }
+                                       }
+                                       postFinder( null, (matcherOut = []), temp, xml );
+                               }
+
+                               // Move matched elements from seed to results to keep them synchronized
+                               i = matcherOut.length;
+                               while ( i-- ) {
+                                       if ( (elem = matcherOut[i]) &&
+                                               (temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {
+
+                                               seed[temp] = !(results[temp] = elem);
+                                       }
+                               }
+                       }
+
+               // Add elements to results, through postFinder if defined
+               } else {
+                       matcherOut = condense(
+                               matcherOut === results ?
+                                       matcherOut.splice( preexisting, matcherOut.length ) :
+                                       matcherOut
+                       );
+                       if ( postFinder ) {
+                               postFinder( null, results, matcherOut, xml );
+                       } else {
+                               push.apply( results, matcherOut );
+                       }
+               }
+       });
+}
+
+function matcherFromTokens( tokens ) {
+       var checkContext, matcher, j,
+               len = tokens.length,
+               leadingRelative = Expr.relative[ tokens[0].type ],
+               implicitRelative = leadingRelative || Expr.relative[" "],
+               i = leadingRelative ? 1 : 0,
+
+               // The foundational matcher ensures that elements are reachable from top-level context(s)
+               matchContext = addCombinator( function( elem ) {
+                       return elem === checkContext;
+               }, implicitRelative, true ),
+               matchAnyContext = addCombinator( function( elem ) {
+                       return indexOf( checkContext, elem ) > -1;
+               }, implicitRelative, true ),
+               matchers = [ function( elem, context, xml ) {
+                       var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
+                               (checkContext = context).nodeType ?
+                                       matchContext( elem, context, xml ) :
+                                       matchAnyContext( elem, context, xml ) );
+                       // Avoid hanging onto element (issue #299)
+                       checkContext = null;
+                       return ret;
+               } ];
+
+       for ( ; i < len; i++ ) {
+               if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
+                       matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
+               } else {
+                       matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );
+
+                       // Return special upon seeing a positional matcher
+                       if ( matcher[ expando ] ) {
+                               // Find the next relative operator (if any) for proper handling
+                               j = ++i;
+                               for ( ; j < len; j++ ) {
+                                       if ( Expr.relative[ tokens[j].type ] ) {
+                                               break;
+                                       }
+                               }
+                               return setMatcher(
+                                       i > 1 && elementMatcher( matchers ),
+                                       i > 1 && toSelector(
+                                               // If the preceding token was a descendant combinator, insert an implicit any-element `*`
+                                               tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
+                                       ).replace( rtrim, "$1" ),
+                                       matcher,
+                                       i < j && matcherFromTokens( tokens.slice( i, j ) ),
+                                       j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
+                                       j < len && toSelector( tokens )
+                               );
+                       }
+                       matchers.push( matcher );
+               }
+       }
+
+       return elementMatcher( matchers );
+}
+
+function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
+       var bySet = setMatchers.length > 0,
+               byElement = elementMatchers.length > 0,
+               superMatcher = function( seed, context, xml, results, outermost ) {
+                       var elem, j, matcher,
+                               matchedCount = 0,
+                               i = "0",
+                               unmatched = seed && [],
+                               setMatched = [],
+                               contextBackup = outermostContext,
+                               // We must always have either seed elements or outermost context
+                               elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
+                               // Use integer dirruns iff this is the outermost matcher
+                               dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
+                               len = elems.length;
+
+                       if ( outermost ) {
+                               outermostContext = context === document || context || outermost;
+                       }
+
+                       // Add elements passing elementMatchers directly to results
+                       // Support: IE<9, Safari
+                       // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
+                       for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
+                               if ( byElement && elem ) {
+                                       j = 0;
+                                       if ( !context && elem.ownerDocument !== document ) {
+                                               setDocument( elem );
+                                               xml = !documentIsHTML;
+                                       }
+                                       while ( (matcher = elementMatchers[j++]) ) {
+                                               if ( matcher( elem, context || document, xml) ) {
+                                                       results.push( elem );
+                                                       break;
+                                               }
+                                       }
+                                       if ( outermost ) {
+                                               dirruns = dirrunsUnique;
+                                       }
+                               }
+
+                               // Track unmatched elements for set filters
+                               if ( bySet ) {
+                                       // They will have gone through all possible matchers
+                                       if ( (elem = !matcher && elem) ) {
+                                               matchedCount--;
+                                       }
+
+                                       // Lengthen the array for every element, matched or not
+                                       if ( seed ) {
+                                               unmatched.push( elem );
+                                       }
+                               }
+                       }
+
+                       // `i` is now the count of elements visited above, and adding it to `matchedCount`
+                       // makes the latter nonnegative.
+                       matchedCount += i;
+
+                       // Apply set filters to unmatched elements
+                       // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
+                       // equals `i`), unless we didn't visit _any_ elements in the above loop because we have
+                       // no element matchers and no seed.
+                       // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
+                       // case, which will result in a "00" `matchedCount` that differs from `i` but is also
+                       // numerically zero.
+                       if ( bySet && i !== matchedCount ) {
+                               j = 0;
+                               while ( (matcher = setMatchers[j++]) ) {
+                                       matcher( unmatched, setMatched, context, xml );
+                               }
+
+                               if ( seed ) {
+                                       // Reintegrate element matches to eliminate the need for sorting
+                                       if ( matchedCount > 0 ) {
+                                               while ( i-- ) {
+                                                       if ( !(unmatched[i] || setMatched[i]) ) {
+                                                               setMatched[i] = pop.call( results );
+                                                       }
+                                               }
+                                       }
+
+                                       // Discard index placeholder values to get only actual matches
+                                       setMatched = condense( setMatched );
+                               }
+
+                               // Add matches to results
+                               push.apply( results, setMatched );
+
+                               // Seedless set matches succeeding multiple successful matchers stipulate sorting
+                               if ( outermost && !seed && setMatched.length > 0 &&
+                                       ( matchedCount + setMatchers.length ) > 1 ) {
+
+                                       Sizzle.uniqueSort( results );
+                               }
+                       }
+
+                       // Override manipulation of globals by nested matchers
+                       if ( outermost ) {
+                               dirruns = dirrunsUnique;
+                               outermostContext = contextBackup;
+                       }
+
+                       return unmatched;
+               };
+
+       return bySet ?
+               markFunction( superMatcher ) :
+               superMatcher;
+}
+
+compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
+       var i,
+               setMatchers = [],
+               elementMatchers = [],
+               cached = compilerCache[ selector + " " ];
+
+       if ( !cached ) {
+               // Generate a function of recursive functions that can be used to check each element
+               if ( !match ) {
+                       match = tokenize( selector );
+               }
+               i = match.length;
+               while ( i-- ) {
+                       cached = matcherFromTokens( match[i] );
+                       if ( cached[ expando ] ) {
+                               setMatchers.push( cached );
+                       } else {
+                               elementMatchers.push( cached );
+                       }
+               }
+
+               // Cache the compiled function
+               cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
+
+               // Save selector and tokenization
+               cached.selector = selector;
+       }
+       return cached;
+};
+
+/**
+ * A low-level selection function that works with Sizzle's compiled
+ *  selector functions
+ * @param {String|Function} selector A selector or a pre-compiled
+ *  selector function built with Sizzle.compile
+ * @param {Element} context
+ * @param {Array} [results]
+ * @param {Array} [seed] A set of elements to match against
+ */
+select = Sizzle.select = function( selector, context, results, seed ) {
+       var i, tokens, token, type, find,
+               compiled = typeof selector === "function" && selector,
+               match = !seed && tokenize( (selector = compiled.selector || selector) );
+
+       results = results || [];
+
+       // Try to minimize operations if there is only one selector in the list and no seed
+       // (the latter of which guarantees us context)
+       if ( match.length === 1 ) {
+
+               // Reduce context if the leading compound selector is an ID
+               tokens = match[0] = match[0].slice( 0 );
+               if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+                               context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) {
+
+                       context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
+                       if ( !context ) {
+                               return results;
+
+                       // Precompiled matchers will still verify ancestry, so step up a level
+                       } else if ( compiled ) {
+                               context = context.parentNode;
+                       }
+
+                       selector = selector.slice( tokens.shift().value.length );
+               }
+
+               // Fetch a seed set for right-to-left matching
+               i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
+               while ( i-- ) {
+                       token = tokens[i];
+
+                       // Abort if we hit a combinator
+                       if ( Expr.relative[ (type = token.type) ] ) {
+                               break;
+                       }
+                       if ( (find = Expr.find[ type ]) ) {
+                               // Search, expanding context for leading sibling combinators
+                               if ( (seed = find(
+                                       token.matches[0].replace( runescape, funescape ),
+                                       rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
+                               )) ) {
+
+                                       // If seed is empty or no tokens remain, we can return early
+                                       tokens.splice( i, 1 );
+                                       selector = seed.length && toSelector( tokens );
+                                       if ( !selector ) {
+                                               push.apply( results, seed );
+                                               return results;
+                                       }
+
+                                       break;
+                               }
+                       }
+               }
+       }
+
+       // Compile and execute a filtering function if one is not provided
+       // Provide `match` to avoid retokenization if we modified the selector above
+       ( compiled || compile( selector, match ) )(
+               seed,
+               context,
+               !documentIsHTML,
+               results,
+               !context || rsibling.test( selector ) && testContext( context.parentNode ) || context
+       );
+       return results;
+};
+
+// One-time assignments
+
+// Sort stability
+support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;
+
+// Support: Chrome 14-35+
+// Always assume duplicates if they aren't passed to the comparison function
+support.detectDuplicates = !!hasDuplicate;
+
+// Initialize against the default document
+setDocument();
+
+// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
+// Detached nodes confoundingly follow *each other*
+support.sortDetached = assert(function( el ) {
+       // Should return 1, but returns 4 (following)
+       return el.compareDocumentPosition( document.createElement("fieldset") ) & 1;
+});
+
+// Support: IE<8
+// Prevent attribute/property "interpolation"
+// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
+if ( !assert(function( el ) {
+       el.innerHTML = "<a href='#'></a>";
+       return el.firstChild.getAttribute("href") === "#" ;
+}) ) {
+       addHandle( "type|href|height|width", function( elem, name, isXML ) {
+               if ( !isXML ) {
+                       return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
+               }
+       });
+}
+
+// Support: IE<9
+// Use defaultValue in place of getAttribute("value")
+if ( !support.attributes || !assert(function( el ) {
+       el.innerHTML = "<input/>";
+       el.firstChild.setAttribute( "value", "" );
+       return el.firstChild.getAttribute( "value" ) === "";
+}) ) {
+       addHandle( "value", function( elem, name, isXML ) {
+               if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
+                       return elem.defaultValue;
+               }
+       });
+}
+
+// Support: IE<9
+// Use getAttributeNode to fetch booleans when getAttribute lies
+if ( !assert(function( el ) {
+       return el.getAttribute("disabled") == null;
+}) ) {
+       addHandle( booleans, function( elem, name, isXML ) {
+               var val;
+               if ( !isXML ) {
+                       return elem[ name ] === true ? name.toLowerCase() :
+                                       (val = elem.getAttributeNode( name )) && val.specified ?
+                                       val.value :
+                               null;
+               }
+       });
+}
+
+return Sizzle;
+
+})( window );
+
+
+
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+
+// Deprecated
+jQuery.expr[ ":" ] = jQuery.expr.pseudos;
+jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+jQuery.escapeSelector = Sizzle.escape;
+
+
+
+
+var dir = function( elem, dir, until ) {
+       var matched = [],
+               truncate = until !== undefined;
+
+       while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
+               if ( elem.nodeType === 1 ) {
+                       if ( truncate && jQuery( elem ).is( until ) ) {
+                               break;
+                       }
+                       matched.push( elem );
+               }
+       }
+       return matched;
+};
+
+
+var siblings = function( n, elem ) {
+       var matched = [];
+
+       for ( ; n; n = n.nextSibling ) {
+               if ( n.nodeType === 1 && n !== elem ) {
+                       matched.push( n );
+               }
+       }
+
+       return matched;
+};
+
+
+var rneedsContext = jQuery.expr.match.needsContext;
+
+
+
+function nodeName( elem, name ) {
+
+  return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+
+};
+var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
+
+
+
+var risSimple = /^.[^:#\[\.,]*$/;
+
+// Implement the identical functionality for filter and not
+function winnow( elements, qualifier, not ) {
+       if ( jQuery.isFunction( qualifier ) ) {
+               return jQuery.grep( elements, function( elem, i ) {
+                       return !!qualifier.call( elem, i, elem ) !== not;
+               } );
+       }
+
+       // Single element
+       if ( qualifier.nodeType ) {
+               return jQuery.grep( elements, function( elem ) {
+                       return ( elem === qualifier ) !== not;
+               } );
+       }
+
+       // Arraylike of elements (jQuery, arguments, Array)
+       if ( typeof qualifier !== "string" ) {
+               return jQuery.grep( elements, function( elem ) {
+                       return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
+               } );
+       }
+
+       // Simple selector that can be filtered directly, removing non-Elements
+       if ( risSimple.test( qualifier ) ) {
+               return jQuery.filter( qualifier, elements, not );
+       }
+
+       // Complex selector, compare the two sets, removing non-Elements
+       qualifier = jQuery.filter( qualifier, elements );
+       return jQuery.grep( elements, function( elem ) {
+               return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
+       } );
+}
+
+jQuery.filter = function( expr, elems, not ) {
+       var elem = elems[ 0 ];
+
+       if ( not ) {
+               expr = ":not(" + expr + ")";
+       }
+
+       if ( elems.length === 1 && elem.nodeType === 1 ) {
+               return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
+       }
+
+       return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
+               return elem.nodeType === 1;
+       } ) );
+};
+
+jQuery.fn.extend( {
+       find: function( selector ) {
+               var i, ret,
+                       len = this.length,
+                       self = this;
+
+               if ( typeof selector !== "string" ) {
+                       return this.pushStack( jQuery( selector ).filter( function() {
+                               for ( i = 0; i < len; i++ ) {
+                                       if ( jQuery.contains( self[ i ], this ) ) {
+                                               return true;
+                                       }
+                               }
+                       } ) );
+               }
+
+               ret = this.pushStack( [] );
+
+               for ( i = 0; i < len; i++ ) {
+                       jQuery.find( selector, self[ i ], ret );
+               }
+
+               return len > 1 ? jQuery.uniqueSort( ret ) : ret;
+       },
+       filter: function( selector ) {
+               return this.pushStack( winnow( this, selector || [], false ) );
+       },
+       not: function( selector ) {
+               return this.pushStack( winnow( this, selector || [], true ) );
+       },
+       is: function( selector ) {
+               return !!winnow(
+                       this,
+
+                       // If this is a positional/relative selector, check membership in the returned set
+                       // so $("p:first").is("p:last") won't return true for a doc with two "p".
+                       typeof selector === "string" && rneedsContext.test( selector ) ?
+                               jQuery( selector ) :
+                               selector || [],
+                       false
+               ).length;
+       }
+} );
+
+
+// Initialize a jQuery object
+
+
+// A central reference to the root jQuery(document)
+var rootjQuery,
+
+       // A simple way to check for HTML strings
+       // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+       // Strict HTML recognition (#11290: must start with <)
+       // Shortcut simple #id case for speed
+       rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
+
+       init = jQuery.fn.init = function( selector, context, root ) {
+               var match, elem;
+
+               // HANDLE: $(""), $(null), $(undefined), $(false)
+               if ( !selector ) {
+                       return this;
+               }
+
+               // Method init() accepts an alternate rootjQuery
+               // so migrate can support jQuery.sub (gh-2101)
+               root = root || rootjQuery;
+
+               // Handle HTML strings
+               if ( typeof selector === "string" ) {
+                       if ( selector[ 0 ] === "<" &&
+                               selector[ selector.length - 1 ] === ">" &&
+                               selector.length >= 3 ) {
+
+                               // Assume that strings that start and end with <> are HTML and skip the regex check
+                               match = [ null, selector, null ];
+
+                       } else {
+                               match = rquickExpr.exec( selector );
+                       }
+
+                       // Match html or make sure no context is specified for #id
+                       if ( match && ( match[ 1 ] || !context ) ) {
+
+                               // HANDLE: $(html) -> $(array)
+                               if ( match[ 1 ] ) {
+                                       context = context instanceof jQuery ? context[ 0 ] : context;
+
+                                       // Option to run scripts is true for back-compat
+                                       // Intentionally let the error be thrown if parseHTML is not present
+                                       jQuery.merge( this, jQuery.parseHTML(
+                                               match[ 1 ],
+                                               context && context.nodeType ? context.ownerDocument || context : document,
+                                               true
+                                       ) );
+
+                                       // HANDLE: $(html, props)
+                                       if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
+                                               for ( match in context ) {
+
+                                                       // Properties of context are called as methods if possible
+                                                       if ( jQuery.isFunction( this[ match ] ) ) {
+                                                               this[ match ]( context[ match ] );
+
+                                                       // ...and otherwise set as attributes
+                                                       } else {
+                                                               this.attr( match, context[ match ] );
+                                                       }
+                                               }
+                                       }
+
+                                       return this;
+
+                               // HANDLE: $(#id)
+                               } else {
+                                       elem = document.getElementById( match[ 2 ] );
+
+                                       if ( elem ) {
+
+                                               // Inject the element directly into the jQuery object
+                                               this[ 0 ] = elem;
+                                               this.length = 1;
+                                       }
+                                       return this;
+                               }
+
+                       // HANDLE: $(expr, $(...))
+                       } else if ( !context || context.jquery ) {
+                               return ( context || root ).find( selector );
+
+                       // HANDLE: $(expr, context)
+                       // (which is just equivalent to: $(context).find(expr)
+                       } else {
+                               return this.constructor( context ).find( selector );
+                       }
+
+               // HANDLE: $(DOMElement)
+               } else if ( selector.nodeType ) {
+                       this[ 0 ] = selector;
+                       this.length = 1;
+                       return this;
+
+               // HANDLE: $(function)
+               // Shortcut for document ready
+               } else if ( jQuery.isFunction( selector ) ) {
+                       return root.ready !== undefined ?
+                               root.ready( selector ) :
+
+                               // Execute immediately if ready is not present
+                               selector( jQuery );
+               }
+
+               return jQuery.makeArray( selector, this );
+       };
+
+// Give the init function the jQuery prototype for later instantiation
+init.prototype = jQuery.fn;
+
+// Initialize central reference
+rootjQuery = jQuery( document );
+
+
+var rparentsprev = /^(?:parents|prev(?:Until|All))/,
+
+       // Methods guaranteed to produce a unique set when starting from a unique set
+       guaranteedUnique = {
+               children: true,
+               contents: true,
+               next: true,
+               prev: true
+       };
+
+jQuery.fn.extend( {
+       has: function( target ) {
+               var targets = jQuery( target, this ),
+                       l = targets.length;
+
+               return this.filter( function() {
+                       var i = 0;
+                       for ( ; i < l; i++ ) {
+                               if ( jQuery.contains( this, targets[ i ] ) ) {
+                                       return true;
+                               }
+                       }
+               } );
+       },
+
+       closest: function( selectors, context ) {
+               var cur,
+                       i = 0,
+                       l = this.length,
+                       matched = [],
+                       targets = typeof selectors !== "string" && jQuery( selectors );
+
+               // Positional selectors never match, since there's no _selection_ context
+               if ( !rneedsContext.test( selectors ) ) {
+                       for ( ; i < l; i++ ) {
+                               for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
+
+                                       // Always skip document fragments
+                                       if ( cur.nodeType < 11 && ( targets ?
+                                               targets.index( cur ) > -1 :
+
+                                               // Don't pass non-elements to Sizzle
+                                               cur.nodeType === 1 &&
+                                                       jQuery.find.matchesSelector( cur, selectors ) ) ) {
+
+                                               matched.push( cur );
+                                               break;
+                                       }
+                               }
+                       }
+               }
+
+               return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
+       },
+
+       // Determine the position of an element within the set
+       index: function( elem ) {
+
+               // No argument, return index in parent
+               if ( !elem ) {
+                       return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
+               }
+
+               // Index in selector
+               if ( typeof elem === "string" ) {
+                       return indexOf.call( jQuery( elem ), this[ 0 ] );
+               }
+
+               // Locate the position of the desired element
+               return indexOf.call( this,
+
+                       // If it receives a jQuery object, the first element is used
+                       elem.jquery ? elem[ 0 ] : elem
+               );
+       },
+
+       add: function( selector, context ) {
+               return this.pushStack(
+                       jQuery.uniqueSort(
+                               jQuery.merge( this.get(), jQuery( selector, context ) )
+                       )
+               );
+       },
+
+       addBack: function( selector ) {
+               return this.add( selector == null ?
+                       this.prevObject : this.prevObject.filter( selector )
+               );
+       }
+} );
+
+function sibling( cur, dir ) {
+       while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
+       return cur;
+}
+
+jQuery.each( {
+       parent: function( elem ) {
+               var parent = elem.parentNode;
+               return parent && parent.nodeType !== 11 ? parent : null;
+       },
+       parents: function( elem ) {
+               return dir( elem, "parentNode" );
+       },
+       parentsUntil: function( elem, i, until ) {
+               return dir( elem, "parentNode", until );
+       },
+       next: function( elem ) {
+               return sibling( elem, "nextSibling" );
+       },
+       prev: function( elem ) {
+               return sibling( elem, "previousSibling" );
+       },
+       nextAll: function( elem ) {
+               return dir( elem, "nextSibling" );
+       },
+       prevAll: function( elem ) {
+               return dir( elem, "previousSibling" );
+       },
+       nextUntil: function( elem, i, until ) {
+               return dir( elem, "nextSibling", until );
+       },
+       prevUntil: function( elem, i, until ) {
+               return dir( elem, "previousSibling", until );
+       },
+       siblings: function( elem ) {
+               return siblings( ( elem.parentNode || {} ).firstChild, elem );
+       },
+       children: function( elem ) {
+               return siblings( elem.firstChild );
+       },
+       contents: function( elem ) {
+        if ( nodeName( elem, "iframe" ) ) {
+            return elem.contentDocument;
+        }
+
+        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
+        // Treat the template element as a regular one in browsers that
+        // don't support it.
+        if ( nodeName( elem, "template" ) ) {
+            elem = elem.content || elem;
+        }
+
+        return jQuery.merge( [], elem.childNodes );
+       }
+}, function( name, fn ) {
+       jQuery.fn[ name ] = function( until, selector ) {
+               var matched = jQuery.map( this, fn, until );
+
+               if ( name.slice( -5 ) !== "Until" ) {
+                       selector = until;
+               }
+
+               if ( selector && typeof selector === "string" ) {
+                       matched = jQuery.filter( selector, matched );
+               }
+
+               if ( this.length > 1 ) {
+
+                       // Remove duplicates
+                       if ( !guaranteedUnique[ name ] ) {
+                               jQuery.uniqueSort( matched );
+                       }
+
+                       // Reverse order for parents* and prev-derivatives
+                       if ( rparentsprev.test( name ) ) {
+                               matched.reverse();
+                       }
+               }
+
+               return this.pushStack( matched );
+       };
+} );
+var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );
+
+
+
+// Convert String-formatted options into Object-formatted ones
+function createOptions( options ) {
+       var object = {};
+       jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
+               object[ flag ] = true;
+       } );
+       return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *     options: an optional list of space-separated options that will change how
+ *                     the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *     once:                   will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *     memory:                 will keep track of previous values and will call any callback added
+ *                                     after the list has been fired right away with the latest "memorized"
+ *                                     values (like a Deferred)
+ *
+ *     unique:                 will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *     stopOnFalse:    interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function( options ) {
+
+       // Convert options from String-formatted to Object-formatted if needed
+       // (we check in cache first)
+       options = typeof options === "string" ?
+               createOptions( options ) :
+               jQuery.extend( {}, options );
+
+       var // Flag to know if list is currently firing
+               firing,
+
+               // Last fire value for non-forgettable lists
+               memory,
+
+               // Flag to know if list was already fired
+               fired,
+
+               // Flag to prevent firing
+               locked,
+
+               // Actual callback list
+               list = [],
+
+               // Queue of execution data for repeatable lists
+               queue = [],
+
+               // Index of currently firing callback (modified by add/remove as needed)
+               firingIndex = -1,
+
+               // Fire callbacks
+               fire = function() {
+
+                       // Enforce single-firing
+                       locked = locked || options.once;
+
+                       // Execute callbacks for all pending executions,
+                       // respecting firingIndex overrides and runtime changes
+                       fired = firing = true;
+                       for ( ; queue.length; firingIndex = -1 ) {
+                               memory = queue.shift();
+                               while ( ++firingIndex < list.length ) {
+
+                                       // Run callback and check for early termination
+                                       if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
+                                               options.stopOnFalse ) {
+
+                                               // Jump to end and forget the data so .add doesn't re-fire
+                                               firingIndex = list.length;
+                                               memory = false;
+                                       }
+                               }
+                       }
+
+                       // Forget the data if we're done with it
+                       if ( !options.memory ) {
+                               memory = false;
+                       }
+
+                       firing = false;
+
+                       // Clean up if we're done firing for good
+                       if ( locked ) {
+
+                               // Keep an empty list if we have data for future add calls
+                               if ( memory ) {
+                                       list = [];
+
+                               // Otherwise, this object is spent
+                               } else {
+                                       list = "";
+                               }
+                       }
+               },
+
+               // Actual Callbacks object
+               self = {
+
+                       // Add a callback or a collection of callbacks to the list
+                       add: function() {
+                               if ( list ) {
+
+                                       // If we have memory from a past run, we should fire after adding
+                                       if ( memory && !firing ) {
+                                               firingIndex = list.length - 1;
+                                               queue.push( memory );
+                                       }
+
+                                       ( function add( args ) {
+                                               jQuery.each( args, function( _, arg ) {
+                                                       if ( jQuery.isFunction( arg ) ) {
+                                                               if ( !options.unique || !self.has( arg ) ) {
+                                                                       list.push( arg );
+                                                               }
+                                                       } else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {
+
+                                                               // Inspect recursively
+                                                               add( arg );
+                                                       }
+                                               } );
+                                       } )( arguments );
+
+                                       if ( memory && !firing ) {
+                                               fire();
+                                       }
+                               }
+                               return this;
+                       },
+
+                       // Remove a callback from the list
+                       remove: function() {
+                               jQuery.each( arguments, function( _, arg ) {
+                                       var index;
+                                       while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
+                                               list.splice( index, 1 );
+
+                                               // Handle firing indexes
+                                               if ( index <= firingIndex ) {
+                                                       firingIndex--;
+                                               }
+                                       }
+                               } );
+                               return this;
+                       },
+
+                       // Check if a given callback is in the list.
+                       // If no argument is given, return whether or not list has callbacks attached.
+                       has: function( fn ) {
+                               return fn ?
+                                       jQuery.inArray( fn, list ) > -1 :
+                                       list.length > 0;
+                       },
+
+                       // Remove all callbacks from the list
+                       empty: function() {
+                               if ( list ) {
+                                       list = [];
+                               }
+                               return this;
+                       },
+
+                       // Disable .fire and .add
+                       // Abort any current/pending executions
+                       // Clear all callbacks and values
+                       disable: function() {
+                               locked = queue = [];
+                               list = memory = "";
+                               return this;
+                       },
+                       disabled: function() {
+                               return !list;
+                       },
+
+                       // Disable .fire
+                       // Also disable .add unless we have memory (since it would have no effect)
+                       // Abort any pending executions
+                       lock: function() {
+                               locked = queue = [];
+                               if ( !memory && !firing ) {
+                                       list = memory = "";
+                               }
+                               return this;
+                       },
+                       locked: function() {
+                               return !!locked;
+                       },
+
+                       // Call all callbacks with the given context and arguments
+                       fireWith: function( context, args ) {
+                               if ( !locked ) {
+                                       args = args || [];
+                                       args = [ context, args.slice ? args.slice() : args ];
+                                       queue.push( args );
+                                       if ( !firing ) {
+                                               fire();
+                                       }
+                               }
+                               return this;
+                       },
+
+                       // Call all the callbacks with the given arguments
+                       fire: function() {
+                               self.fireWith( this, arguments );
+                               return this;
+                       },
+
+                       // To know if the callbacks have already been called at least once
+                       fired: function() {
+                               return !!fired;
+                       }
+               };
+
+       return self;
+};
+
+
+function Identity( v ) {
+       return v;
+}
+function Thrower( ex ) {
+       throw ex;
+}
+
+function adoptValue( value, resolve, reject, noValue ) {
+       var method;
+
+       try {
+
+               // Check for promise aspect first to privilege synchronous behavior
+               if ( value && jQuery.isFunction( ( method = value.promise ) ) ) {
+                       method.call( value ).done( resolve ).fail( reject );
+
+               // Other thenables
+               } else if ( value && jQuery.isFunction( ( method = value.then ) ) ) {
+                       method.call( value, resolve, reject );
+
+               // Other non-thenables
+               } else {
+
+                       // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
+                       // * false: [ value ].slice( 0 ) => resolve( value )
+                       // * true: [ value ].slice( 1 ) => resolve()
+                       resolve.apply( undefined, [ value ].slice( noValue ) );
+               }
+
+       // For Promises/A+, convert exceptions into rejections
+       // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
+       // Deferred#then to conditionally suppress rejection.
+       } catch ( value ) {
+
+               // Support: Android 4.0 only
+               // Strict mode functions invoked without .call/.apply get global-object context
+               reject.apply( undefined, [ value ] );
+       }
+}
+
+jQuery.extend( {
+
+       Deferred: function( func ) {
+               var tuples = [
+
+                               // action, add listener, callbacks,
+                               // ... .then handlers, argument index, [final state]
+                               [ "notify", "progress", jQuery.Callbacks( "memory" ),
+                                       jQuery.Callbacks( "memory" ), 2 ],
+                               [ "resolve", "done", jQuery.Callbacks( "once memory" ),
+                                       jQuery.Callbacks( "once memory" ), 0, "resolved" ],
+                               [ "reject", "fail", jQuery.Callbacks( "once memory" ),
+                                       jQuery.Callbacks( "once memory" ), 1, "rejected" ]
+                       ],
+                       state = "pending",
+                       promise = {
+                               state: function() {
+                                       return state;
+                               },
+                               always: function() {
+                                       deferred.done( arguments ).fail( arguments );
+                                       return this;
+                               },
+                               "catch": function( fn ) {
+                                       return promise.then( null, fn );
+                               },
+
+                               // Keep pipe for back-compat
+                               pipe: function( /* fnDone, fnFail, fnProgress */ ) {
+                                       var fns = arguments;
+
+                                       return jQuery.Deferred( function( newDefer ) {
+                                               jQuery.each( tuples, function( i, tuple ) {
+
+                                                       // Map tuples (progress, done, fail) to arguments (done, fail, progress)
+                                                       var fn = jQuery.isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
+
+                                                       // deferred.progress(function() { bind to newDefer or newDefer.notify })
+                                                       // deferred.done(function() { bind to newDefer or newDefer.resolve })
+                                                       // deferred.fail(function() { bind to newDefer or newDefer.reject })
+                                                       deferred[ tuple[ 1 ] ]( function() {
+                                                               var returned = fn && fn.apply( this, arguments );
+                                                               if ( returned && jQuery.isFunction( returned.promise ) ) {
+                                                                       returned.promise()
+                                                                               .progress( newDefer.notify )
+                                                                               .done( newDefer.resolve )
+                                                                               .fail( newDefer.reject );
+                                                               } else {
+                                                                       newDefer[ tuple[ 0 ] + "With" ](
+                                                                               this,
+                                                                               fn ? [ returned ] : arguments
+                                                                       );
+                                                               }
+                                                       } );
+                                               } );
+                                               fns = null;
+                                       } ).promise();
+                               },
+                               then: function( onFulfilled, onRejected, onProgress ) {
+                                       var maxDepth = 0;
+                                       function resolve( depth, deferred, handler, special ) {
+                                               return function() {
+                                                       var that = this,
+                                                               args = arguments,
+                                                               mightThrow = function() {
+                                                                       var returned, then;
+
+                                                                       // Support: Promises/A+ section 2.3.3.3.3
+                                                                       // https://promisesaplus.com/#point-59
+                                                                       // Ignore double-resolution attempts
+                                                                       if ( depth < maxDepth ) {
+                                                                               return;
+                                                                       }
+
+                                                                       returned = handler.apply( that, args );
+
+                                                                       // Support: Promises/A+ section 2.3.1
+                                                                       // https://promisesaplus.com/#point-48
+                                                                       if ( returned === deferred.promise() ) {
+                                                                               throw new TypeError( "Thenable self-resolution" );
+                                                                       }
+
+                                                                       // Support: Promises/A+ sections 2.3.3.1, 3.5
+                                                                       // https://promisesaplus.com/#point-54
+                                                                       // https://promisesaplus.com/#point-75
+                                                                       // Retrieve `then` only once
+                                                                       then = returned &&
+
+                                                                               // Support: Promises/A+ section 2.3.4
+                                                                               // https://promisesaplus.com/#point-64
+                                                                               // Only check objects and functions for thenability
+                                                                               ( typeof returned === "object" ||
+                                                                                       typeof returned === "function" ) &&
+                                                                               returned.then;
+
+                                                                       // Handle a returned thenable
+                                                                       if ( jQuery.isFunction( then ) ) {
+
+                                                                               // Special processors (notify) just wait for resolution
+                                                                               if ( special ) {
+                                                                                       then.call(
+                                                                                               returned,
+                                                                                               resolve( maxDepth, deferred, Identity, special ),
+                                                                                               resolve( maxDepth, deferred, Thrower, special )
+                                                                                       );
+
+                                                                               // Normal processors (resolve) also hook into progress
+                                                                               } else {
+
+                                                                                       // ...and disregard older resolution values
+                                                                                       maxDepth++;
+
+                                                                                       then.call(
+                                                                                               returned,
+                                                                                               resolve( maxDepth, deferred, Identity, special ),
+                                                                                               resolve( maxDepth, deferred, Thrower, special ),
+                                                                                               resolve( maxDepth, deferred, Identity,
+                                                                                                       deferred.notifyWith )
+                                                                                       );
+                                                                               }
+
+                                                                       // Handle all other returned values
+                                                                       } else {
+
+                                                                               // Only substitute handlers pass on context
+                                                                               // and multiple values (non-spec behavior)
+                                                                               if ( handler !== Identity ) {
+                                                                                       that = undefined;
+                                                                                       args = [ returned ];
+                                                                               }
+
+                                                                               // Process the value(s)
+                                                                               // Default process is resolve
+                                                                               ( special || deferred.resolveWith )( that, args );
+                                                                       }
+                                                               },
+
+                                                               // Only normal processors (resolve) catch and reject exceptions
+                                                               process = special ?
+                                                                       mightThrow :
+                                                                       function() {
+                                                                               try {
+                                                                                       mightThrow();
+                                                                               } catch ( e ) {
+
+                                                                                       if ( jQuery.Deferred.exceptionHook ) {
+                                                                                               jQuery.Deferred.exceptionHook( e,
+                                                                                                       process.stackTrace );
+                                                                                       }
+
+                                                                                       // Support: Promises/A+ section 2.3.3.3.4.1
+                                                                                       // https://promisesaplus.com/#point-61
+                                                                                       // Ignore post-resolution exceptions
+                                                                                       if ( depth + 1 >= maxDepth ) {
+
+                                                                                               // Only substitute handlers pass on context
+                                                                                               // and multiple values (non-spec behavior)
+                                                                                               if ( handler !== Thrower ) {
+                                                                                                       that = undefined;
+                                                                                                       args = [ e ];
+                                                                                               }
+
+                                                                                               deferred.rejectWith( that, args );
+                                                                                       }
+                                                                               }
+                                                                       };
+
+                                                       // Support: Promises/A+ section 2.3.3.3.1
+                                                       // https://promisesaplus.com/#point-57
+                                                       // Re-resolve promises immediately to dodge false rejection from
+                                                       // subsequent errors
+                                                       if ( depth ) {
+                                                               process();
+                                                       } else {
+
+                                                               // Call an optional hook to record the stack, in case of exception
+                                                               // since it's otherwise lost when execution goes async
+                                                               if ( jQuery.Deferred.getStackHook ) {
+                                                                       process.stackTrace = jQuery.Deferred.getStackHook();
+                                                               }
+                                                               window.setTimeout( process );
+                                                       }
+                                               };
+                                       }
+
+                                       return jQuery.Deferred( function( newDefer ) {
+
+                                               // progress_handlers.add( ... )
+                                               tuples[ 0 ][ 3 ].add(
+                                                       resolve(
+                                                               0,
+                                                               newDefer,
+                                                               jQuery.isFunction( onProgress ) ?
+                                                                       onProgress :
+                                                                       Identity,
+                                                               newDefer.notifyWith
+                                                       )
+                                               );
+
+                                               // fulfilled_handlers.add( ... )
+                                               tuples[ 1 ][ 3 ].add(
+                                                       resolve(
+                                                               0,
+                                                               newDefer,
+                                                               jQuery.isFunction( onFulfilled ) ?
+                                                                       onFulfilled :
+                                                                       Identity
+                                                       )
+                                               );
+
+                                               // rejected_handlers.add( ... )
+                                               tuples[ 2 ][ 3 ].add(
+                                                       resolve(
+                                                               0,
+                                                               newDefer,
+                                                               jQuery.isFunction( onRejected ) ?
+                                                                       onRejected :
+                                                                       Thrower
+                                                       )
+                                               );
+                                       } ).promise();
+                               },
+
+                               // Get a promise for this deferred
+                               // If obj is provided, the promise aspect is added to the object
+                               promise: function( obj ) {
+                                       return obj != null ? jQuery.extend( obj, promise ) : promise;
+                               }
+                       },
+                       deferred = {};
+
+               // Add list-specific methods
+               jQuery.each( tuples, function( i, tuple ) {
+                       var list = tuple[ 2 ],
+                               stateString = tuple[ 5 ];
+
+                       // promise.progress = list.add
+                       // promise.done = list.add
+                       // promise.fail = list.add
+                       promise[ tuple[ 1 ] ] = list.add;
+
+                       // Handle state
+                       if ( stateString ) {
+                               list.add(
+                                       function() {
+
+                                               // state = "resolved" (i.e., fulfilled)
+                                               // state = "rejected"
+                                               state = stateString;
+                                       },
+
+                                       // rejected_callbacks.disable
+                                       // fulfilled_callbacks.disable
+                                       tuples[ 3 - i ][ 2 ].disable,
+
+                                       // progress_callbacks.lock
+                                       tuples[ 0 ][ 2 ].lock
+                               );
+                       }
+
+                       // progress_handlers.fire
+                       // fulfilled_handlers.fire
+                       // rejected_handlers.fire
+                       list.add( tuple[ 3 ].fire );
+
+                       // deferred.notify = function() { deferred.notifyWith(...) }
+                       // deferred.resolve = function() { deferred.resolveWith(...) }
+                       // deferred.reject = function() { deferred.rejectWith(...) }
+                       deferred[ tuple[ 0 ] ] = function() {
+                               deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
+                               return this;
+                       };
+
+                       // deferred.notifyWith = list.fireWith
+                       // deferred.resolveWith = list.fireWith
+                       // deferred.rejectWith = list.fireWith
+                       deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
+               } );
+
+               // Make the deferred a promise
+               promise.promise( deferred );
+
+               // Call given func if any
+               if ( func ) {
+                       func.call( deferred, deferred );
+               }
+
+               // All done!
+               return deferred;
+       },
+
+       // Deferred helper
+       when: function( singleValue ) {
+               var
+
+                       // count of uncompleted subordinates
+                       remaining = arguments.length,
+
+                       // count of unprocessed arguments
+                       i = remaining,
+
+                       // subordinate fulfillment data
+                       resolveContexts = Array( i ),
+                       resolveValues = slice.call( arguments ),
+
+                       // the master Deferred
+                       master = jQuery.Deferred(),
+
+                       // subordinate callback factory
+                       updateFunc = function( i ) {
+                               return function( value ) {
+                                       resolveContexts[ i ] = this;
+                                       resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
+                                       if ( !( --remaining ) ) {
+                                               master.resolveWith( resolveContexts, resolveValues );
+                                       }
+                               };
+                       };
+
+               // Single- and empty arguments are adopted like Promise.resolve
+               if ( remaining <= 1 ) {
+                       adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
+                               !remaining );
+
+                       // Use .then() to unwrap secondary thenables (cf. gh-3000)
+                       if ( master.state() === "pending" ||
+                               jQuery.isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
+
+                               return master.then();
+                       }
+               }
+
+               // Multiple arguments are aggregated like Promise.all array elements
+               while ( i-- ) {
+                       adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
+               }
+
+               return master.promise();
+       }
+} );
+
+
+// These usually indicate a programmer mistake during development,
+// warn about them ASAP rather than swallowing them by default.
+var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
+
+jQuery.Deferred.exceptionHook = function( error, stack ) {
+
+       // Support: IE 8 - 9 only
+       // Console exists when dev tools are open, which can happen at any time
+       if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
+               window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
+       }
+};
+
+
+
+
+jQuery.readyException = function( error ) {
+       window.setTimeout( function() {
+               throw error;
+       } );
+};
+
+
+
+
+// The deferred used on DOM ready
+var readyList = jQuery.Deferred();
+
+jQuery.fn.ready = function( fn ) {
+
+       readyList
+               .then( fn )
+
+               // Wrap jQuery.readyException in a function so that the lookup
+               // happens at the time of error handling instead of callback
+               // registration.
+               .catch( function( error ) {
+                       jQuery.readyException( error );
+               } );
+
+       return this;
+};
+
+jQuery.extend( {
+
+       // Is the DOM ready to be used? Set to true once it occurs.
+       isReady: false,
+
+       // A counter to track how many items to wait for before
+       // the ready event fires. See #6781
+       readyWait: 1,
+
+       // Handle when the DOM is ready
+       ready: function( wait ) {
+
+               // Abort if there are pending holds or we're already ready
+               if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+                       return;
+               }
+
+               // Remember that the DOM is ready
+               jQuery.isReady = true;
+
+               // If a normal DOM Ready event fired, decrement, and wait if need be
+               if ( wait !== true && --jQuery.readyWait > 0 ) {
+                       return;
+               }
+
+               // If there are functions bound, to execute
+               readyList.resolveWith( document, [ jQuery ] );
+       }
+} );
+
+jQuery.ready.then = readyList.then;
+
+// The ready event handler and self cleanup method
+function completed() {
+       document.removeEventListener( "DOMContentLoaded", completed );
+       window.removeEventListener( "load", completed );
+       jQuery.ready();
+}
+
+// Catch cases where $(document).ready() is called
+// after the browser event has already occurred.
+// Support: IE <=9 - 10 only
+// Older IE sometimes signals "interactive" too soon
+if ( document.readyState === "complete" ||
+       ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
+
+       // Handle it asynchronously to allow scripts the opportunity to delay ready
+       window.setTimeout( jQuery.ready );
+
+} else {
+
+       // Use the handy event callback
+       document.addEventListener( "DOMContentLoaded", completed );
+
+       // A fallback to window.onload, that will always work
+       window.addEventListener( "load", completed );
+}
+
+
+
+
+// Multifunctional method to get and set values of a collection
+// The value/s can optionally be executed if it's a function
+var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
+       var i = 0,
+               len = elems.length,
+               bulk = key == null;
+
+       // Sets many values
+       if ( jQuery.type( key ) === "object" ) {
+               chainable = true;
+               for ( i in key ) {
+                       access( elems, fn, i, key[ i ], true, emptyGet, raw );
+               }
+
+       // Sets one value
+       } else if ( value !== undefined ) {
+               chainable = true;
+
+               if ( !jQuery.isFunction( value ) ) {
+                       raw = true;
+               }
+
+               if ( bulk ) {
+
+                       // Bulk operations run against the entire set
+                       if ( raw ) {
+                               fn.call( elems, value );
+                               fn = null;
+
+                       // ...except when executing function values
+                       } else {
+                               bulk = fn;
+                               fn = function( elem, key, value ) {
+                                       return bulk.call( jQuery( elem ), value );
+                               };
+                       }
+               }
+
+               if ( fn ) {
+                       for ( ; i < len; i++ ) {
+                               fn(
+                                       elems[ i ], key, raw ?
+                                       value :
+                                       value.call( elems[ i ], i, fn( elems[ i ], key ) )
+                               );
+                       }
+               }
+       }
+
+       if ( chainable ) {
+               return elems;
+       }
+
+       // Gets
+       if ( bulk ) {
+               return fn.call( elems );
+       }
+
+       return len ? fn( elems[ 0 ], key ) : emptyGet;
+};
+var acceptData = function( owner ) {
+
+       // Accepts only:
+       //  - Node
+       //    - Node.ELEMENT_NODE
+       //    - Node.DOCUMENT_NODE
+       //  - Object
+       //    - Any
+       return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
+};
+
+
+
+
+function Data() {
+       this.expando = jQuery.expando + Data.uid++;
+}
+
+Data.uid = 1;
+
+Data.prototype = {
+
+       cache: function( owner ) {
+
+               // Check if the owner object already has a cache
+               var value = owner[ this.expando ];
+
+               // If not, create one
+               if ( !value ) {
+                       value = {};
+
+                       // We can accept data for non-element nodes in modern browsers,
+                       // but we should not, see #8335.
+                       // Always return an empty object.
+                       if ( acceptData( owner ) ) {
+
+                               // If it is a node unlikely to be stringify-ed or looped over
+                               // use plain assignment
+                               if ( owner.nodeType ) {
+                                       owner[ this.expando ] = value;
+
+                               // Otherwise secure it in a non-enumerable property
+                               // configurable must be true to allow the property to be
+                               // deleted when data is removed
+                               } else {
+                                       Object.defineProperty( owner, this.expando, {
+                                               value: value,
+                                               configurable: true
+                                       } );
+                               }
+                       }
+               }
+
+               return value;
+       },
+       set: function( owner, data, value ) {
+               var prop,
+                       cache = this.cache( owner );
+
+               // Handle: [ owner, key, value ] args
+               // Always use camelCase key (gh-2257)
+               if ( typeof data === "string" ) {
+                       cache[ jQuery.camelCase( data ) ] = value;
+
+               // Handle: [ owner, { properties } ] args
+               } else {
+
+                       // Copy the properties one-by-one to the cache object
+                       for ( prop in data ) {
+                               cache[ jQuery.camelCase( prop ) ] = data[ prop ];
+                       }
+               }
+               return cache;
+       },
+       get: function( owner, key ) {
+               return key === undefined ?
+                       this.cache( owner ) :
+
+                       // Always use camelCase key (gh-2257)
+                       owner[ this.expando ] && owner[ this.expando ][ jQuery.camelCase( key ) ];
+       },
+       access: function( owner, key, value ) {
+
+               // In cases where either:
+               //
+               //   1. No key was specified
+               //   2. A string key was specified, but no value provided
+               //
+               // Take the "read" path and allow the get method to determine
+               // which value to return, respectively either:
+               //
+               //   1. The entire cache object
+               //   2. The data stored at the key
+               //
+               if ( key === undefined ||
+                               ( ( key && typeof key === "string" ) && value === undefined ) ) {
+
+                       return this.get( owner, key );
+               }
+
+               // When the key is not a string, or both a key and value
+               // are specified, set or extend (existing objects) with either:
+               //
+               //   1. An object of properties
+               //   2. A key and value
+               //
+               this.set( owner, key, value );
+
+               // Since the "set" path can have two possible entry points
+               // return the expected data based on which path was taken[*]
+               return value !== undefined ? value : key;
+       },
+       remove: function( owner, key ) {
+               var i,
+                       cache = owner[ this.expando ];
+
+               if ( cache === undefined ) {
+                       return;
+               }
+
+               if ( key !== undefined ) {
+
+                       // Support array or space separated string of keys
+                       if ( Array.isArray( key ) ) {
+
+                               // If key is an array of keys...
+                               // We always set camelCase keys, so remove that.
+                               key = key.map( jQuery.camelCase );
+                       } else {
+                               key = jQuery.camelCase( key );
+
+                               // If a key with the spaces exists, use it.
+                               // Otherwise, create an array by matching non-whitespace
+                               key = key in cache ?
+                                       [ key ] :
+                                       ( key.match( rnothtmlwhite ) || [] );
+                       }
+
+                       i = key.length;
+
+                       while ( i-- ) {
+                               delete cache[ key[ i ] ];
+                       }
+               }
+
+               // Remove the expando if there's no more data
+               if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
+
+                       // Support: Chrome <=35 - 45
+                       // Webkit & Blink performance suffers when deleting properties
+                       // from DOM nodes, so set to undefined instead
+                       // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
+                       if ( owner.nodeType ) {
+                               owner[ this.expando ] = undefined;
+                       } else {
+                               delete owner[ this.expando ];
+                       }
+               }
+       },
+       hasData: function( owner ) {
+               var cache = owner[ this.expando ];
+               return cache !== undefined && !jQuery.isEmptyObject( cache );
+       }
+};
+var dataPriv = new Data();
+
+var dataUser = new Data();
+
+
+
+//     Implementation Summary
+//
+//     1. Enforce API surface and semantic compatibility with 1.9.x branch
+//     2. Improve the module's maintainability by reducing the storage
+//             paths to a single mechanism.
+//     3. Use the same single mechanism to support "private" and "user" data.
+//     4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+//     5. Avoid exposing implementation details on user objects (eg. expando properties)
+//     6. Provide a clear path for implementation upgrade to WeakMap in 2014
+
+var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
+       rmultiDash = /[A-Z]/g;
+
+function getData( data ) {
+       if ( data === "true" ) {
+               return true;
+       }
+
+       if ( data === "false" ) {
+               return false;
+       }
+
+       if ( data === "null" ) {
+               return null;
+       }
+
+       // Only convert to a number if it doesn't change the string
+       if ( data === +data + "" ) {
+               return +data;
+       }
+
+       if ( rbrace.test( data ) ) {
+               return JSON.parse( data );
+       }
+
+       return data;
+}
+
+function dataAttr( elem, key, data ) {
+       var name;
+
+       // If nothing was found internally, try to fetch any
+       // data from the HTML5 data-* attribute
+       if ( data === undefined && elem.nodeType === 1 ) {
+               name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
+               data = elem.getAttribute( name );
+
+               if ( typeof data === "string" ) {
+                       try {
+                               data = getData( data );
+                       } catch ( e ) {}
+
+                       // Make sure we set the data so it isn't changed later
+                       dataUser.set( elem, key, data );
+               } else {
+                       data = undefined;
+               }
+       }
+       return data;
+}
+
+jQuery.extend( {
+       hasData: function( elem ) {
+               return dataUser.hasData( elem ) || dataPriv.hasData( elem );
+       },
+
+       data: function( elem, name, data ) {
+               return dataUser.access( elem, name, data );
+       },
+
+       removeData: function( elem, name ) {
+               dataUser.remove( elem, name );
+       },
+
+       // TODO: Now that all calls to _data and _removeData have been replaced
+       // with direct calls to dataPriv methods, these can be deprecated.
+       _data: function( elem, name, data ) {
+               return dataPriv.access( elem, name, data );
+       },
+
+       _removeData: function( elem, name ) {
+               dataPriv.remove( elem, name );
+       }
+} );
+
+jQuery.fn.extend( {
+       data: function( key, value ) {
+               var i, name, data,
+                       elem = this[ 0 ],
+                       attrs = elem && elem.attributes;
+
+               // Gets all values
+               if ( key === undefined ) {
+                       if ( this.length ) {
+                               data = dataUser.get( elem );
+
+                               if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
+                                       i = attrs.length;
+                                       while ( i-- ) {
+
+                                               // Support: IE 11 only
+                                               // The attrs elements can be null (#14894)
+                                               if ( attrs[ i ] ) {
+                                                       name = attrs[ i ].name;
+                                                       if ( name.indexOf( "data-" ) === 0 ) {
+                                                               name = jQuery.camelCase( name.slice( 5 ) );
+                                                               dataAttr( elem, name, data[ name ] );
+                                                       }
+                                               }
+                                       }
+                                       dataPriv.set( elem, "hasDataAttrs", true );
+                               }
+                       }
+
+                       return data;
+               }
+
+               // Sets multiple values
+               if ( typeof key === "object" ) {
+                       return this.each( function() {
+                               dataUser.set( this, key );
+                       } );
+               }
+
+               return access( this, function( value ) {
+                       var data;
+
+                       // The calling jQuery object (element matches) is not empty
+                       // (and therefore has an element appears at this[ 0 ]) and the
+                       // `value` parameter was not undefined. An empty jQuery object
+                       // will result in `undefined` for elem = this[ 0 ] which will
+                       // throw an exception if an attempt to read a data cache is made.
+                       if ( elem && value === undefined ) {
+
+                               // Attempt to get data from the cache
+                               // The key will always be camelCased in Data
+                               data = dataUser.get( elem, key );
+                               if ( data !== undefined ) {
+                                       return data;
+                               }
+
+                               // Attempt to "discover" the data in
+                               // HTML5 custom data-* attrs
+                               data = dataAttr( elem, key );
+                               if ( data !== undefined ) {
+                                       return data;
+                               }
+
+                               // We tried really hard, but the data doesn't exist.
+                               return;
+                       }
+
+                       // Set the data...
+                       this.each( function() {
+
+                               // We always store the camelCased key
+                               dataUser.set( this, key, value );
+                       } );
+               }, null, value, arguments.length > 1, null, true );
+       },
+
+       removeData: function( key ) {
+               return this.each( function() {
+                       dataUser.remove( this, key );
+               } );
+       }
+} );
+
+
+jQuery.extend( {
+       queue: function( elem, type, data ) {
+               var queue;
+
+               if ( elem ) {
+                       type = ( type || "fx" ) + "queue";
+                       queue = dataPriv.get( elem, type );
+
+                       // Speed up dequeue by getting out quickly if this is just a lookup
+                       if ( data ) {
+                               if ( !queue || Array.isArray( data ) ) {
+                                       queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
+                               } else {
+                                       queue.push( data );
+                               }
+                       }
+                       return queue || [];
+               }
+       },
+
+       dequeue: function( elem, type ) {
+               type = type || "fx";
+
+               var queue = jQuery.queue( elem, type ),
+                       startLength = queue.length,
+                       fn = queue.shift(),
+                       hooks = jQuery._queueHooks( elem, type ),
+                       next = function() {
+                               jQuery.dequeue( elem, type );
+                       };
+
+               // If the fx queue is dequeued, always remove the progress sentinel
+               if ( fn === "inprogress" ) {
+                       fn = queue.shift();
+                       startLength--;
+               }
+
+               if ( fn ) {
+
+                       // Add a progress sentinel to prevent the fx queue from being
+                       // automatically dequeued
+                       if ( type === "fx" ) {
+                               queue.unshift( "inprogress" );
+                       }
+
+                       // Clear up the last queue stop function
+                       delete hooks.stop;
+                       fn.call( elem, next, hooks );
+               }
+
+               if ( !startLength && hooks ) {
+                       hooks.empty.fire();
+               }
+       },
+
+       // Not public - generate a queueHooks object, or return the current one
+       _queueHooks: function( elem, type ) {
+               var key = type + "queueHooks";
+               return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
+                       empty: jQuery.Callbacks( "once memory" ).add( function() {
+                               dataPriv.remove( elem, [ type + "queue", key ] );
+                       } )
+               } );
+       }
+} );
+
+jQuery.fn.extend( {
+       queue: function( type, data ) {
+               var setter = 2;
+
+               if ( typeof type !== "string" ) {
+                       data = type;
+                       type = "fx";
+                       setter--;
+               }
+
+               if ( arguments.length < setter ) {
+                       return jQuery.queue( this[ 0 ], type );
+               }
+
+               return data === undefined ?
+                       this :
+                       this.each( function() {
+                               var queue = jQuery.queue( this, type, data );
+
+                               // Ensure a hooks for this queue
+                               jQuery._queueHooks( this, type );
+
+                               if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
+                                       jQuery.dequeue( this, type );
+                               }
+                       } );
+       },
+       dequeue: function( type ) {
+               return this.each( function() {
+                       jQuery.dequeue( this, type );
+               } );
+       },
+       clearQueue: function( type ) {
+               return this.queue( type || "fx", [] );
+       },
+
+       // Get a promise resolved when queues of a certain type
+       // are emptied (fx is the type by default)
+       promise: function( type, obj ) {
+               var tmp,
+                       count = 1,
+                       defer = jQuery.Deferred(),
+                       elements = this,
+                       i = this.length,
+                       resolve = function() {
+                               if ( !( --count ) ) {
+                                       defer.resolveWith( elements, [ elements ] );
+                               }
+                       };
+
+               if ( typeof type !== "string" ) {
+                       obj = type;
+                       type = undefined;
+               }
+               type = type || "fx";
+
+               while ( i-- ) {
+                       tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
+                       if ( tmp && tmp.empty ) {
+                               count++;
+                               tmp.empty.add( resolve );
+                       }
+               }
+               resolve();
+               return defer.promise( obj );
+       }
+} );
+var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
+
+var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
+
+
+var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
+
+var isHiddenWithinTree = function( elem, el ) {
+
+               // isHiddenWithinTree might be called from jQuery#filter function;
+               // in that case, element will be second argument
+               elem = el || elem;
+
+               // Inline style trumps all
+               return elem.style.display === "none" ||
+                       elem.style.display === "" &&
+
+                       // Otherwise, check computed style
+                       // Support: Firefox <=43 - 45
+                       // Disconnected elements can have computed display: none, so first confirm that elem is
+                       // in the document.
+                       jQuery.contains( elem.ownerDocument, elem ) &&
+
+                       jQuery.css( elem, "display" ) === "none";
+       };
+
+var swap = function( elem, options, callback, args ) {
+       var ret, name,
+               old = {};
+
+       // Remember the old values, and insert the new ones
+       for ( name in options ) {
+               old[ name ] = elem.style[ name ];
+               elem.style[ name ] = options[ name ];
+       }
+
+       ret = callback.apply( elem, args || [] );
+
+       // Revert the old values
+       for ( name in options ) {
+               elem.style[ name ] = old[ name ];
+       }
+
+       return ret;
+};
+
+
+
+
+function adjustCSS( elem, prop, valueParts, tween ) {
+       var adjusted,
+               scale = 1,
+               maxIterations = 20,
+               currentValue = tween ?
+                       function() {
+                               return tween.cur();
+                       } :
+                       function() {
+                               return jQuery.css( elem, prop, "" );
+                       },
+               initial = currentValue(),
+               unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
+
+               // Starting value computation is required for potential unit mismatches
+               initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
+                       rcssNum.exec( jQuery.css( elem, prop ) );
+
+       if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
+
+               // Trust units reported by jQuery.css
+               unit = unit || initialInUnit[ 3 ];
+
+               // Make sure we update the tween properties later on
+               valueParts = valueParts || [];
+
+               // Iteratively approximate from a nonzero starting point
+               initialInUnit = +initial || 1;
+
+               do {
+
+                       // If previous iteration zeroed out, double until we get *something*.
+                       // Use string for doubling so we don't accidentally see scale as unchanged below
+                       scale = scale || ".5";
+
+                       // Adjust and apply
+                       initialInUnit = initialInUnit / scale;
+                       jQuery.style( elem, prop, initialInUnit + unit );
+
+               // Update scale, tolerating zero or NaN from tween.cur()
+               // Break the loop if scale is unchanged or perfect, or if we've just had enough.
+               } while (
+                       scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
+               );
+       }
+
+       if ( valueParts ) {
+               initialInUnit = +initialInUnit || +initial || 0;
+
+               // Apply relative offset (+=/-=) if specified
+               adjusted = valueParts[ 1 ] ?
+                       initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
+                       +valueParts[ 2 ];
+               if ( tween ) {
+                       tween.unit = unit;
+                       tween.start = initialInUnit;
+                       tween.end = adjusted;
+               }
+       }
+       return adjusted;
+}
+
+
+var defaultDisplayMap = {};
+
+function getDefaultDisplay( elem ) {
+       var temp,
+               doc = elem.ownerDocument,
+               nodeName = elem.nodeName,
+               display = defaultDisplayMap[ nodeName ];
+
+       if ( display ) {
+               return display;
+       }
+
+       temp = doc.body.appendChild( doc.createElement( nodeName ) );
+       display = jQuery.css( temp, "display" );
+
+       temp.parentNode.removeChild( temp );
+
+       if ( display === "none" ) {
+               display = "block";
+       }
+       defaultDisplayMap[ nodeName ] = display;
+
+       return display;
+}
+
+function showHide( elements, show ) {
+       var display, elem,
+               values = [],
+               index = 0,
+               length = elements.length;
+
+       // Determine new display value for elements that need to change
+       for ( ; index < length; index++ ) {
+               elem = elements[ index ];
+               if ( !elem.style ) {
+                       continue;
+               }
+
+               display = elem.style.display;
+               if ( show ) {
+
+                       // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
+                       // check is required in this first loop unless we have a nonempty display value (either
+                       // inline or about-to-be-restored)
+                       if ( display === "none" ) {
+                               values[ index ] = dataPriv.get( elem, "display" ) || null;
+                               if ( !values[ index ] ) {
+                                       elem.style.display = "";
+                               }
+                       }
+                       if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
+                               values[ index ] = getDefaultDisplay( elem );
+                       }
+               } else {
+                       if ( display !== "none" ) {
+                               values[ index ] = "none";
+
+                               // Remember what we're overwriting
+                               dataPriv.set( elem, "display", display );
+                       }
+               }
+       }
+
+       // Set the display of the elements in a second loop to avoid constant reflow
+       for ( index = 0; index < length; index++ ) {
+               if ( values[ index ] != null ) {
+                       elements[ index ].style.display = values[ index ];
+               }
+       }
+
+       return elements;
+}
+
+jQuery.fn.extend( {
+       show: function() {
+               return showHide( this, true );
+       },
+       hide: function() {
+               return showHide( this );
+       },
+       toggle: function( state ) {
+               if ( typeof state === "boolean" ) {
+                       return state ? this.show() : this.hide();
+               }
+
+               return this.each( function() {
+                       if ( isHiddenWithinTree( this ) ) {
+                               jQuery( this ).show();
+                       } else {
+                               jQuery( this ).hide();
+                       }
+               } );
+       }
+} );
+var rcheckableType = ( /^(?:checkbox|radio)$/i );
+
+var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
+
+var rscriptType = ( /^$|\/(?:java|ecma)script/i );
+
+
+
+// We have to close these tags to support XHTML (#13200)
+var wrapMap = {
+
+       // Support: IE <=9 only
+       option: [ 1, "<select multiple='multiple'>", "</select>" ],
+
+       // XHTML parsers do not magically insert elements in the
+       // same way that tag soup parsers do. So we cannot shorten
+       // this by omitting <tbody> or other required elements.
+       thead: [ 1, "<table>", "</table>" ],
+       col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
+       tr: [ 2, "<table><tbody>", "</tbody></table>" ],
+       td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
+
+       _default: [ 0, "", "" ]
+};
+
+// Support: IE <=9 only
+wrapMap.optgroup = wrapMap.option;
+
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+
+function getAll( context, tag ) {
+
+       // Support: IE <=9 - 11 only
+       // Use typeof to avoid zero-argument method invocation on host objects (#15151)
+       var ret;
+
+       if ( typeof context.getElementsByTagName !== "undefined" ) {
+               ret = context.getElementsByTagName( tag || "*" );
+
+       } else if ( typeof context.querySelectorAll !== "undefined" ) {
+               ret = context.querySelectorAll( tag || "*" );
+
+       } else {
+               ret = [];
+       }
+
+       if ( tag === undefined || tag && nodeName( context, tag ) ) {
+               return jQuery.merge( [ context ], ret );
+       }
+
+       return ret;
+}
+
+
+// Mark scripts as having already been evaluated
+function setGlobalEval( elems, refElements ) {
+       var i = 0,
+               l = elems.length;
+
+       for ( ; i < l; i++ ) {
+               dataPriv.set(
+                       elems[ i ],
+                       "globalEval",
+                       !refElements || dataPriv.get( refElements[ i ], "globalEval" )
+               );
+       }
+}
+
+
+var rhtml = /<|&#?\w+;/;
+
+function buildFragment( elems, context, scripts, selection, ignored ) {
+       var elem, tmp, tag, wrap, contains, j,
+               fragment = context.createDocumentFragment(),
+               nodes = [],
+               i = 0,
+               l = elems.length;
+
+       for ( ; i < l; i++ ) {
+               elem = elems[ i ];
+
+               if ( elem || elem === 0 ) {
+
+                       // Add nodes directly
+                       if ( jQuery.type( elem ) === "object" ) {
+
+                               // Support: Android <=4.0 only, PhantomJS 1 only
+                               // push.apply(_, arraylike) throws on ancient WebKit
+                               jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
+
+                       // Convert non-html into a text node
+                       } else if ( !rhtml.test( elem ) ) {
+                               nodes.push( context.createTextNode( elem ) );
+
+                       // Convert html into DOM nodes
+                       } else {
+                               tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
+
+                               // Deserialize a standard representation
+                               tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
+                               wrap = wrapMap[ tag ] || wrapMap._default;
+                               tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
+
+                               // Descend through wrappers to the right content
+                               j = wrap[ 0 ];
+                               while ( j-- ) {
+                                       tmp = tmp.lastChild;
+                               }
+
+                               // Support: Android <=4.0 only, PhantomJS 1 only
+                               // push.apply(_, arraylike) throws on ancient WebKit
+                               jQuery.merge( nodes, tmp.childNodes );
+
+                               // Remember the top-level container
+                               tmp = fragment.firstChild;
+
+                               // Ensure the created nodes are orphaned (#12392)
+                               tmp.textContent = "";
+                       }
+               }
+       }
+
+       // Remove wrapper from fragment
+       fragment.textContent = "";
+
+       i = 0;
+       while ( ( elem = nodes[ i++ ] ) ) {
+
+               // Skip elements already in the context collection (trac-4087)
+               if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
+                       if ( ignored ) {
+                               ignored.push( elem );
+                       }
+                       continue;
+               }
+
+               contains = jQuery.contains( elem.ownerDocument, elem );
+
+               // Append to fragment
+               tmp = getAll( fragment.appendChild( elem ), "script" );
+
+               // Preserve script evaluation history
+               if ( contains ) {
+                       setGlobalEval( tmp );
+               }
+
+               // Capture executables
+               if ( scripts ) {
+                       j = 0;
+                       while ( ( elem = tmp[ j++ ] ) ) {
+                               if ( rscriptType.test( elem.type || "" ) ) {
+                                       scripts.push( elem );
+                               }
+                       }
+               }
+       }
+
+       return fragment;
+}
+
+
+( function() {
+       var fragment = document.createDocumentFragment(),
+               div = fragment.appendChild( document.createElement( "div" ) ),
+               input = document.createElement( "input" );
+
+       // Support: Android 4.0 - 4.3 only
+       // Check state lost if the name is set (#11217)
+       // Support: Windows Web Apps (WWA)
+       // `name` and `type` must use .setAttribute for WWA (#14901)
+       input.setAttribute( "type", "radio" );
+       input.setAttribute( "checked", "checked" );
+       input.setAttribute( "name", "t" );
+
+       div.appendChild( input );
+
+       // Support: Android <=4.1 only
+       // Older WebKit doesn't clone checked state correctly in fragments
+       support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
+
+       // Support: IE <=11 only
+       // Make sure textarea (and checkbox) defaultValue is properly cloned
+       div.innerHTML = "<textarea>x</textarea>";
+       support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
+} )();
+var documentElement = document.documentElement;
+
+
+
+var
+       rkeyEvent = /^key/,
+       rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
+       rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
+
+function returnTrue() {
+       return true;
+}
+
+function returnFalse() {
+       return false;
+}
+
+// Support: IE <=9 only
+// See #13393 for more info
+function safeActiveElement() {
+       try {
+               return document.activeElement;
+       } catch ( err ) { }
+}
+
+function on( elem, types, selector, data, fn, one ) {
+       var origFn, type;
+
+       // Types can be a map of types/handlers
+       if ( typeof types === "object" ) {
+
+               // ( types-Object, selector, data )
+               if ( typeof selector !== "string" ) {
+
+                       // ( types-Object, data )
+                       data = data || selector;
+                       selector = undefined;
+               }
+               for ( type in types ) {
+                       on( elem, type, selector, data, types[ type ], one );
+               }
+               return elem;
+       }
+
+       if ( data == null && fn == null ) {
+
+               // ( types, fn )
+               fn = selector;
+               data = selector = undefined;
+       } else if ( fn == null ) {
+               if ( typeof selector === "string" ) {
+
+                       // ( types, selector, fn )
+                       fn = data;
+                       data = undefined;
+               } else {
+
+                       // ( types, data, fn )
+                       fn = data;
+                       data = selector;
+                       selector = undefined;
+               }
+       }
+       if ( fn === false ) {
+               fn = returnFalse;
+       } else if ( !fn ) {
+               return elem;
+       }
+
+       if ( one === 1 ) {
+               origFn = fn;
+               fn = function( event ) {
+
+                       // Can use an empty set, since event contains the info
+                       jQuery().off( event );
+                       return origFn.apply( this, arguments );
+               };
+
+               // Use same guid so caller can remove using origFn
+               fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
+       }
+       return elem.each( function() {
+               jQuery.event.add( this, types, fn, data, selector );
+       } );
+}
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+       global: {},
+
+       add: function( elem, types, handler, data, selector ) {
+
+               var handleObjIn, eventHandle, tmp,
+                       events, t, handleObj,
+                       special, handlers, type, namespaces, origType,
+                       elemData = dataPriv.get( elem );
+
+               // Don't attach events to noData or text/comment nodes (but allow plain objects)
+               if ( !elemData ) {
+                       return;
+               }
+
+               // Caller can pass in an object of custom data in lieu of the handler
+               if ( handler.handler ) {
+                       handleObjIn = handler;
+                       handler = handleObjIn.handler;
+                       selector = handleObjIn.selector;
+               }
+
+               // Ensure that invalid selectors throw exceptions at attach time
+               // Evaluate against documentElement in case elem is a non-element node (e.g., document)
+               if ( selector ) {
+                       jQuery.find.matchesSelector( documentElement, selector );
+               }
+
+               // Make sure that the handler has a unique ID, used to find/remove it later
+               if ( !handler.guid ) {
+                       handler.guid = jQuery.guid++;
+               }
+
+               // Init the element's event structure and main handler, if this is the first
+               if ( !( events = elemData.events ) ) {
+                       events = elemData.events = {};
+               }
+               if ( !( eventHandle = elemData.handle ) ) {
+                       eventHandle = elemData.handle = function( e ) {
+
+                               // Discard the second event of a jQuery.event.trigger() and
+                               // when an event is called after a page has unloaded
+                               return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
+                                       jQuery.event.dispatch.apply( elem, arguments ) : undefined;
+                       };
+               }
+
+               // Handle multiple events separated by a space
+               types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
+               t = types.length;
+               while ( t-- ) {
+                       tmp = rtypenamespace.exec( types[ t ] ) || [];
+                       type = origType = tmp[ 1 ];
+                       namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
+
+                       // There *must* be a type, no attaching namespace-only handlers
+                       if ( !type ) {
+                               continue;
+                       }
+
+                       // If event changes its type, use the special event handlers for the changed type
+                       special = jQuery.event.special[ type ] || {};
+
+                       // If selector defined, determine special event api type, otherwise given type
+                       type = ( selector ? special.delegateType : special.bindType ) || type;
+
+                       // Update special based on newly reset type
+                       special = jQuery.event.special[ type ] || {};
+
+                       // handleObj is passed to all event handlers
+                       handleObj = jQuery.extend( {
+                               type: type,
+                               origType: origType,
+                               data: data,
+                               handler: handler,
+                               guid: handler.guid,
+                               selector: selector,
+                               needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
+                               namespace: namespaces.join( "." )
+                       }, handleObjIn );
+
+                       // Init the event handler queue if we're the first
+                       if ( !( handlers = events[ type ] ) ) {
+                               handlers = events[ type ] = [];
+                               handlers.delegateCount = 0;
+
+                               // Only use addEventListener if the special events handler returns false
+                               if ( !special.setup ||
+                                       special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
+
+                                       if ( elem.addEventListener ) {
+                                               elem.addEventListener( type, eventHandle );
+                                       }
+                               }
+                       }
+
+                       if ( special.add ) {
+                               special.add.call( elem, handleObj );
+
+                               if ( !handleObj.handler.guid ) {
+                                       handleObj.handler.guid = handler.guid;
+                               }
+                       }
+
+                       // Add to the element's handler list, delegates in front
+                       if ( selector ) {
+                               handlers.splice( handlers.delegateCount++, 0, handleObj );
+                       } else {
+                               handlers.push( handleObj );
+                       }
+
+                       // Keep track of which events have ever been used, for event optimization
+                       jQuery.event.global[ type ] = true;
+               }
+
+       },
+
+       // Detach an event or set of events from an element
+       remove: function( elem, types, handler, selector, mappedTypes ) {
+
+               var j, origCount, tmp,
+                       events, t, handleObj,
+                       special, handlers, type, namespaces, origType,
+                       elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
+
+               if ( !elemData || !( events = elemData.events ) ) {
+                       return;
+               }
+
+               // Once for each type.namespace in types; type may be omitted
+               types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
+               t = types.length;
+               while ( t-- ) {
+                       tmp = rtypenamespace.exec( types[ t ] ) || [];
+                       type = origType = tmp[ 1 ];
+                       namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
+
+                       // Unbind all events (on this namespace, if provided) for the element
+                       if ( !type ) {
+                               for ( type in events ) {
+                                       jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
+                               }
+                               continue;
+                       }
+
+                       special = jQuery.event.special[ type ] || {};
+                       type = ( selector ? special.delegateType : special.bindType ) || type;
+                       handlers = events[ type ] || [];
+                       tmp = tmp[ 2 ] &&
+                               new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );
+
+                       // Remove matching events
+                       origCount = j = handlers.length;
+                       while ( j-- ) {
+                               handleObj = handlers[ j ];
+
+                               if ( ( mappedTypes || origType === handleObj.origType ) &&
+                                       ( !handler || handler.guid === handleObj.guid ) &&
+                                       ( !tmp || tmp.test( handleObj.namespace ) ) &&
+                                       ( !selector || selector === handleObj.selector ||
+                                               selector === "**" && handleObj.selector ) ) {
+                                       handlers.splice( j, 1 );
+
+                                       if ( handleObj.selector ) {
+                                               handlers.delegateCount--;
+                                       }
+                                       if ( special.remove ) {
+                                               special.remove.call( elem, handleObj );
+                                       }
+                               }
+                       }
+
+                       // Remove generic event handler if we removed something and no more handlers exist
+                       // (avoids potential for endless recursion during removal of special event handlers)
+                       if ( origCount && !handlers.length ) {
+                               if ( !special.teardown ||
+                                       special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
+
+                                       jQuery.removeEvent( elem, type, elemData.handle );
+                               }
+
+                               delete events[ type ];
+                       }
+               }
+
+               // Remove data and the expando if it's no longer used
+               if ( jQuery.isEmptyObject( events ) ) {
+                       dataPriv.remove( elem, "handle events" );
+               }
+       },
+
+       dispatch: function( nativeEvent ) {
+
+               // Make a writable jQuery.Event from the native event object
+               var event = jQuery.event.fix( nativeEvent );
+
+               var i, j, ret, matched, handleObj, handlerQueue,
+                       args = new Array( arguments.length ),
+                       handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
+                       special = jQuery.event.special[ event.type ] || {};
+
+               // Use the fix-ed jQuery.Event rather than the (read-only) native event
+               args[ 0 ] = event;
+
+               for ( i = 1; i < arguments.length; i++ ) {
+                       args[ i ] = arguments[ i ];
+               }
+
+               event.delegateTarget = this;
+
+               // Call the preDispatch hook for the mapped type, and let it bail if desired
+               if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
+                       return;
+               }
+
+               // Determine handlers
+               handlerQueue = jQuery.event.handlers.call( this, event, handlers );
+
+               // Run delegates first; they may want to stop propagation beneath us
+               i = 0;
+               while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
+                       event.currentTarget = matched.elem;
+
+                       j = 0;
+                       while ( ( handleObj = matched.handlers[ j++ ] ) &&
+                               !event.isImmediatePropagationStopped() ) {
+
+                               // Triggered event must either 1) have no namespace, or 2) have namespace(s)
+                               // a subset or equal to those in the bound event (both can have no namespace).
+                               if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {
+
+                                       event.handleObj = handleObj;
+                                       event.data = handleObj.data;
+
+                                       ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
+                                               handleObj.handler ).apply( matched.elem, args );
+
+                                       if ( ret !== undefined ) {
+                                               if ( ( event.result = ret ) === false ) {
+                                                       event.preventDefault();
+                                                       event.stopPropagation();
+                                               }
+                                       }
+                               }
+                       }
+               }
+
+               // Call the postDispatch hook for the mapped type
+               if ( special.postDispatch ) {
+                       special.postDispatch.call( this, event );
+               }
+
+               return event.result;
+       },
+
+       handlers: function( event, handlers ) {
+               var i, handleObj, sel, matchedHandlers, matchedSelectors,
+                       handlerQueue = [],
+                       delegateCount = handlers.delegateCount,
+                       cur = event.target;
+
+               // Find delegate handlers
+               if ( delegateCount &&
+
+                       // Support: IE <=9
+                       // Black-hole SVG <use> instance trees (trac-13180)
+                       cur.nodeType &&
+
+                       // Support: Firefox <=42
+                       // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
+                       // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
+                       // Support: IE 11 only
+                       // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
+                       !( event.type === "click" && event.button >= 1 ) ) {
+
+                       for ( ; cur !== this; cur = cur.parentNode || this ) {
+
+                               // Don't check non-elements (#13208)
+                               // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+                               if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
+                                       matchedHandlers = [];
+                                       matchedSelectors = {};
+                                       for ( i = 0; i < delegateCount; i++ ) {
+                                               handleObj = handlers[ i ];
+
+                                               // Don't conflict with Object.prototype properties (#13203)
+                                               sel = handleObj.selector + " ";
+
+                                               if ( matchedSelectors[ sel ] === undefined ) {
+                                                       matchedSelectors[ sel ] = handleObj.needsContext ?
+                                                               jQuery( sel, this ).index( cur ) > -1 :
+                                                               jQuery.find( sel, this, null, [ cur ] ).length;
+                                               }
+                                               if ( matchedSelectors[ sel ] ) {
+                                                       matchedHandlers.push( handleObj );
+                                               }
+                                       }
+                                       if ( matchedHandlers.length ) {
+                                               handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
+                                       }
+                               }
+                       }
+               }
+
+               // Add the remaining (directly-bound) handlers
+               cur = this;
+               if ( delegateCount < handlers.length ) {
+                       handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
+               }
+
+               return handlerQueue;
+       },
+
+       addProp: function( name, hook ) {
+               Object.defineProperty( jQuery.Event.prototype, name, {
+                       enumerable: true,
+                       configurable: true,
+
+                       get: jQuery.isFunction( hook ) ?
+                               function() {
+                                       if ( this.originalEvent ) {
+                                                       return hook( this.originalEvent );
+                                       }
+                               } :
+                               function() {
+                                       if ( this.originalEvent ) {
+                                                       return this.originalEvent[ name ];
+                                       }
+                               },
+
+                       set: function( value ) {
+                               Object.defineProperty( this, name, {
+                                       enumerable: true,
+                                       configurable: true,
+                                       writable: true,
+                                       value: value
+                               } );
+                       }
+               } );
+       },
+
+       fix: function( originalEvent ) {
+               return originalEvent[ jQuery.expando ] ?
+                       originalEvent :
+                       new jQuery.Event( originalEvent );
+       },
+
+       special: {
+               load: {
+
+                       // Prevent triggered image.load events from bubbling to window.load
+                       noBubble: true
+               },
+               focus: {
+
+                       // Fire native event if possible so blur/focus sequence is correct
+                       trigger: function() {
+                               if ( this !== safeActiveElement() && this.focus ) {
+                                       this.focus();
+                                       return false;
+                               }
+                       },
+                       delegateType: "focusin"
+               },
+               blur: {
+                       trigger: function() {
+                               if ( this === safeActiveElement() && this.blur ) {
+                                       this.blur();
+                                       return false;
+                               }
+                       },
+                       delegateType: "focusout"
+               },
+               click: {
+
+                       // For checkbox, fire native event so checked state will be right
+                       trigger: function() {
+                               if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
+                                       this.click();
+                                       return false;
+                               }
+                       },
+
+                       // For cross-browser consistency, don't fire native .click() on links
+                       _default: function( event ) {
+                               return nodeName( event.target, "a" );
+                       }
+               },
+
+               beforeunload: {
+                       postDispatch: function( event ) {
+
+                               // Support: Firefox 20+
+                               // Firefox doesn't alert if the returnValue field is not set.
+                               if ( event.result !== undefined && event.originalEvent ) {
+                                       event.originalEvent.returnValue = event.result;
+                               }
+                       }
+               }
+       }
+};
+
+jQuery.removeEvent = function( elem, type, handle ) {
+
+       // This "if" is needed for plain objects
+       if ( elem.removeEventListener ) {
+               elem.removeEventListener( type, handle );
+       }
+};
+
+jQuery.Event = function( src, props ) {
+
+       // Allow instantiation without the 'new' keyword
+       if ( !( this instanceof jQuery.Event ) ) {
+               return new jQuery.Event( src, props );
+       }
+
+       // Event object
+       if ( src && src.type ) {
+               this.originalEvent = src;
+               this.type = src.type;
+
+               // Events bubbling up the document may have been marked as prevented
+               // by a handler lower down the tree; reflect the correct value.
+               this.isDefaultPrevented = src.defaultPrevented ||
+                               src.defaultPrevented === undefined &&
+
+                               // Support: Android <=2.3 only
+                               src.returnValue === false ?
+                       returnTrue :
+                       returnFalse;
+
+               // Create target properties
+               // Support: Safari <=6 - 7 only
+               // Target should not be a text node (#504, #13143)
+               this.target = ( src.target && src.target.nodeType === 3 ) ?
+                       src.target.parentNode :
+                       src.target;
+
+               this.currentTarget = src.currentTarget;
+               this.relatedTarget = src.relatedTarget;
+
+       // Event type
+       } else {
+               this.type = src;
+       }
+
+       // Put explicitly provided properties onto the event object
+       if ( props ) {
+               jQuery.extend( this, props );
+       }
+
+       // Create a timestamp if incoming event doesn't have one
+       this.timeStamp = src && src.timeStamp || jQuery.now();
+
+       // Mark it as fixed
+       this[ jQuery.expando ] = true;
+};
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+       constructor: jQuery.Event,
+       isDefaultPrevented: returnFalse,
+       isPropagationStopped: returnFalse,
+       isImmediatePropagationStopped: returnFalse,
+       isSimulated: false,
+
+       preventDefault: function() {
+               var e = this.originalEvent;
+
+               this.isDefaultPrevented = returnTrue;
+
+               if ( e && !this.isSimulated ) {
+                       e.preventDefault();
+               }
+       },
+       stopPropagation: function() {
+               var e = this.originalEvent;
+
+               this.isPropagationStopped = returnTrue;
+
+               if ( e && !this.isSimulated ) {
+                       e.stopPropagation();
+               }
+       },
+       stopImmediatePropagation: function() {
+               var e = this.originalEvent;
+
+               this.isImmediatePropagationStopped = returnTrue;
+
+               if ( e && !this.isSimulated ) {
+                       e.stopImmediatePropagation();
+               }
+
+               this.stopPropagation();
+       }
+};
+
+// Includes all common event props including KeyEvent and MouseEvent specific props
+jQuery.each( {
+       altKey: true,
+       bubbles: true,
+       cancelable: true,
+       changedTouches: true,
+       ctrlKey: true,
+       detail: true,
+       eventPhase: true,
+       metaKey: true,
+       pageX: true,
+       pageY: true,
+       shiftKey: true,
+       view: true,
+       "char": true,
+       charCode: true,
+       key: true,
+       keyCode: true,
+       button: true,
+       buttons: true,
+       clientX: true,
+       clientY: true,
+       offsetX: true,
+       offsetY: true,
+       pointerId: true,
+       pointerType: true,
+       screenX: true,
+       screenY: true,
+       targetTouches: true,
+       toElement: true,
+       touches: true,
+
+       which: function( event ) {
+               var button = event.button;
+
+               // Add which for key events
+               if ( event.which == null && rkeyEvent.test( event.type ) ) {
+                       return event.charCode != null ? event.charCode : event.keyCode;
+               }
+
+               // Add which for click: 1 === left; 2 === middle; 3 === right
+               if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
+                       if ( button & 1 ) {
+                               return 1;
+                       }
+
+                       if ( button & 2 ) {
+                               return 3;
+                       }
+
+                       if ( button & 4 ) {
+                               return 2;
+                       }
+
+                       return 0;
+               }
+
+               return event.which;
+       }
+}, jQuery.event.addProp );
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+// so that event delegation works in jQuery.
+// Do the same for pointerenter/pointerleave and pointerover/pointerout
+//
+// Support: Safari 7 only
+// Safari sends mouseenter too often; see:
+// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
+// for the description of the bug (it existed in older Chrome versions as well).
+jQuery.each( {
+       mouseenter: "mouseover",
+       mouseleave: "mouseout",
+       pointerenter: "pointerover",
+       pointerleave: "pointerout"
+}, function( orig, fix ) {
+       jQuery.event.special[ orig ] = {
+               delegateType: fix,
+               bindType: fix,
+
+               handle: function( event ) {
+                       var ret,
+                               target = this,
+                               related = event.relatedTarget,
+                               handleObj = event.handleObj;
+
+                       // For mouseenter/leave call the handler if related is outside the target.
+                       // NB: No relatedTarget if the mouse left/entered the browser window
+                       if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
+                               event.type = handleObj.origType;
+                               ret = handleObj.handler.apply( this, arguments );
+                               event.type = fix;
+                       }
+                       return ret;
+               }
+       };
+} );
+
+jQuery.fn.extend( {
+
+       on: function( types, selector, data, fn ) {
+               return on( this, types, selector, data, fn );
+       },
+       one: function( types, selector, data, fn ) {
+               return on( this, types, selector, data, fn, 1 );
+       },
+       off: function( types, selector, fn ) {
+               var handleObj, type;
+               if ( types && types.preventDefault && types.handleObj ) {
+
+                       // ( event )  dispatched jQuery.Event
+                       handleObj = types.handleObj;
+                       jQuery( types.delegateTarget ).off(
+                               handleObj.namespace ?
+                                       handleObj.origType + "." + handleObj.namespace :
+                                       handleObj.origType,
+                               handleObj.selector,
+                               handleObj.handler
+                       );
+                       return this;
+               }
+               if ( typeof types === "object" ) {
+
+                       // ( types-object [, selector] )
+                       for ( type in types ) {
+                               this.off( type, selector, types[ type ] );
+                       }
+                       return this;
+               }
+               if ( selector === false || typeof selector === "function" ) {
+
+                       // ( types [, fn] )
+                       fn = selector;
+                       selector = undefined;
+               }
+               if ( fn === false ) {
+                       fn = returnFalse;
+               }
+               return this.each( function() {
+                       jQuery.event.remove( this, types, fn, selector );
+               } );
+       }
+} );
+
+
+var
+
+       /* eslint-disable max-len */
+
+       // See https://github.com/eslint/eslint/issues/3229
+       rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
+
+       /* eslint-enable */
+
+       // Support: IE <=10 - 11, Edge 12 - 13
+       // In IE/Edge using regex groups here causes severe slowdowns.
+       // See https://connect.microsoft.com/IE/feedback/details/1736512/
+       rnoInnerhtml = /<script|<style|<link/i,
+
+       // checked="checked" or checked
+       rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+       rscriptTypeMasked = /^true\/(.*)/,
+       rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
+
+// Prefer a tbody over its parent table for containing new rows
+function manipulationTarget( elem, content ) {
+       if ( nodeName( elem, "table" ) &&
+               nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
+
+               return jQuery( ">tbody", elem )[ 0 ] || elem;
+       }
+
+       return elem;
+}
+
+// Replace/restore the type attribute of script elements for safe DOM manipulation
+function disableScript( elem ) {
+       elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
+       return elem;
+}
+function restoreScript( elem ) {
+       var match = rscriptTypeMasked.exec( elem.type );
+
+       if ( match ) {
+               elem.type = match[ 1 ];
+       } else {
+               elem.removeAttribute( "type" );
+       }
+
+       return elem;
+}
+
+function cloneCopyEvent( src, dest ) {
+       var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
+
+       if ( dest.nodeType !== 1 ) {
+               return;
+       }
+
+       // 1. Copy private data: events, handlers, etc.
+       if ( dataPriv.hasData( src ) ) {
+               pdataOld = dataPriv.access( src );
+               pdataCur = dataPriv.set( dest, pdataOld );
+               events = pdataOld.events;
+
+               if ( events ) {
+                       delete pdataCur.handle;
+                       pdataCur.events = {};
+
+                       for ( type in events ) {
+                               for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+                                       jQuery.event.add( dest, type, events[ type ][ i ] );
+                               }
+                       }
+               }
+       }
+
+       // 2. Copy user data
+       if ( dataUser.hasData( src ) ) {
+               udataOld = dataUser.access( src );
+               udataCur = jQuery.extend( {}, udataOld );
+
+               dataUser.set( dest, udataCur );
+       }
+}
+
+// Fix IE bugs, see support tests
+function fixInput( src, dest ) {
+       var nodeName = dest.nodeName.toLowerCase();
+
+       // Fails to persist the checked state of a cloned checkbox or radio button.
+       if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
+               dest.checked = src.checked;
+
+       // Fails to return the selected option to the default selected state when cloning options
+       } else if ( nodeName === "input" || nodeName === "textarea" ) {
+               dest.defaultValue = src.defaultValue;
+       }
+}
+
+function domManip( collection, args, callback, ignored ) {
+
+       // Flatten any nested arrays
+       args = concat.apply( [], args );
+
+       var fragment, first, scripts, hasScripts, node, doc,
+               i = 0,
+               l = collection.length,
+               iNoClone = l - 1,
+               value = args[ 0 ],
+               isFunction = jQuery.isFunction( value );
+
+       // We can't cloneNode fragments that contain checked, in WebKit
+       if ( isFunction ||
+                       ( l > 1 && typeof value === "string" &&
+                               !support.checkClone && rchecked.test( value ) ) ) {
+               return collection.each( function( index ) {
+                       var self = collection.eq( index );
+                       if ( isFunction ) {
+                               args[ 0 ] = value.call( this, index, self.html() );
+                       }
+                       domManip( self, args, callback, ignored );
+               } );
+       }
+
+       if ( l ) {
+               fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
+               first = fragment.firstChild;
+
+               if ( fragment.childNodes.length === 1 ) {
+                       fragment = first;
+               }
+
+               // Require either new content or an interest in ignored elements to invoke the callback
+               if ( first || ignored ) {
+                       scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
+                       hasScripts = scripts.length;
+
+                       // Use the original fragment for the last item
+                       // instead of the first because it can end up
+                       // being emptied incorrectly in certain situations (#8070).
+                       for ( ; i < l; i++ ) {
+                               node = fragment;
+
+                               if ( i !== iNoClone ) {
+                                       node = jQuery.clone( node, true, true );
+
+                                       // Keep references to cloned scripts for later restoration
+                                       if ( hasScripts ) {
+
+                                               // Support: Android <=4.0 only, PhantomJS 1 only
+                                               // push.apply(_, arraylike) throws on ancient WebKit
+                                               jQuery.merge( scripts, getAll( node, "script" ) );
+                                       }
+                               }
+
+                               callback.call( collection[ i ], node, i );
+                       }
+
+                       if ( hasScripts ) {
+                               doc = scripts[ scripts.length - 1 ].ownerDocument;
+
+                               // Reenable scripts
+                               jQuery.map( scripts, restoreScript );
+
+                               // Evaluate executable scripts on first document insertion
+                               for ( i = 0; i < hasScripts; i++ ) {
+                                       node = scripts[ i ];
+                                       if ( rscriptType.test( node.type || "" ) &&
+                                               !dataPriv.access( node, "globalEval" ) &&
+                                               jQuery.contains( doc, node ) ) {
+
+                                               if ( node.src ) {
+
+                                                       // Optional AJAX dependency, but won't run scripts if not present
+                                                       if ( jQuery._evalUrl ) {
+                                                               jQuery._evalUrl( node.src );
+                                                       }
+                                               } else {
+                                                       DOMEval( node.textContent.replace( rcleanScript, "" ), doc );
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       return collection;
+}
+
+function remove( elem, selector, keepData ) {
+       var node,
+               nodes = selector ? jQuery.filter( selector, elem ) : elem,
+               i = 0;
+
+       for ( ; ( node = nodes[ i ] ) != null; i++ ) {
+               if ( !keepData && node.nodeType === 1 ) {
+                       jQuery.cleanData( getAll( node ) );
+               }
+
+               if ( node.parentNode ) {
+                       if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
+                               setGlobalEval( getAll( node, "script" ) );
+                       }
+                       node.parentNode.removeChild( node );
+               }
+       }
+
+       return elem;
+}
+
+jQuery.extend( {
+       htmlPrefilter: function( html ) {
+               return html.replace( rxhtmlTag, "<$1></$2>" );
+       },
+
+       clone: function( elem, dataAndEvents, deepDataAndEvents ) {
+               var i, l, srcElements, destElements,
+                       clone = elem.cloneNode( true ),
+                       inPage = jQuery.contains( elem.ownerDocument, elem );
+
+               // Fix IE cloning issues
+               if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
+                               !jQuery.isXMLDoc( elem ) ) {
+
+                       // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
+                       destElements = getAll( clone );
+                       srcElements = getAll( elem );
+
+                       for ( i = 0, l = srcElements.length; i < l; i++ ) {
+                               fixInput( srcElements[ i ], destElements[ i ] );
+                       }
+               }
+
+               // Copy the events from the original to the clone
+               if ( dataAndEvents ) {
+                       if ( deepDataAndEvents ) {
+                               srcElements = srcElements || getAll( elem );
+                               destElements = destElements || getAll( clone );
+
+                               for ( i = 0, l = srcElements.length; i < l; i++ ) {
+                                       cloneCopyEvent( srcElements[ i ], destElements[ i ] );
+                               }
+                       } else {
+                               cloneCopyEvent( elem, clone );
+                       }
+               }
+
+               // Preserve script evaluation history
+               destElements = getAll( clone, "script" );
+               if ( destElements.length > 0 ) {
+                       setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
+               }
+
+               // Return the cloned set
+               return clone;
+       },
+
+       cleanData: function( elems ) {
+               var data, elem, type,
+                       special = jQuery.event.special,
+                       i = 0;
+
+               for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
+                       if ( acceptData( elem ) ) {
+                               if ( ( data = elem[ dataPriv.expando ] ) ) {
+                                       if ( data.events ) {
+                                               for ( type in data.events ) {
+                                                       if ( special[ type ] ) {
+                                                               jQuery.event.remove( elem, type );
+
+                                                       // This is a shortcut to avoid jQuery.event.remove's overhead
+                                                       } else {
+                                                               jQuery.removeEvent( elem, type, data.handle );
+                                                       }
+                                               }
+                                       }
+
+                                       // Support: Chrome <=35 - 45+
+                                       // Assign undefined instead of using delete, see Data#remove
+                                       elem[ dataPriv.expando ] = undefined;
+                               }
+                               if ( elem[ dataUser.expando ] ) {
+
+                                       // Support: Chrome <=35 - 45+
+                                       // Assign undefined instead of using delete, see Data#remove
+                                       elem[ dataUser.expando ] = undefined;
+                               }
+                       }
+               }
+       }
+} );
+
+jQuery.fn.extend( {
+       detach: function( selector ) {
+               return remove( this, selector, true );
+       },
+
+       remove: function( selector ) {
+               return remove( this, selector );
+       },
+
+       text: function( value ) {
+               return access( this, function( value ) {
+                       return value === undefined ?
+                               jQuery.text( this ) :
+                               this.empty().each( function() {
+                                       if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+                                               this.textContent = value;
+                                       }
+                               } );
+               }, null, value, arguments.length );
+       },
+
+       append: function() {
+               return domManip( this, arguments, function( elem ) {
+                       if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+                               var target = manipulationTarget( this, elem );
+                               target.appendChild( elem );
+                       }
+               } );
+       },
+
+       prepend: function() {
+               return domManip( this, arguments, function( elem ) {
+                       if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+                               var target = manipulationTarget( this, elem );
+                               target.insertBefore( elem, target.firstChild );
+                       }
+               } );
+       },
+
+       before: function() {
+               return domManip( this, arguments, function( elem ) {
+                       if ( this.parentNode ) {
+                               this.parentNode.insertBefore( elem, this );
+                       }
+               } );
+       },
+
+       after: function() {
+               return domManip( this, arguments, function( elem ) {
+                       if ( this.parentNode ) {
+                               this.parentNode.insertBefore( elem, this.nextSibling );
+                       }
+               } );
+       },
+
+       empty: function() {
+               var elem,
+                       i = 0;
+
+               for ( ; ( elem = this[ i ] ) != null; i++ ) {
+                       if ( elem.nodeType === 1 ) {
+
+                               // Prevent memory leaks
+                               jQuery.cleanData( getAll( elem, false ) );
+
+                               // Remove any remaining nodes
+                               elem.textContent = "";
+                       }
+               }
+
+               return this;
+       },
+
+       clone: function( dataAndEvents, deepDataAndEvents ) {
+               dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+               deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+               return this.map( function() {
+                       return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
+               } );
+       },
+
+       html: function( value ) {
+               return access( this, function( value ) {
+                       var elem = this[ 0 ] || {},
+                               i = 0,
+                               l = this.length;
+
+                       if ( value === undefined && elem.nodeType === 1 ) {
+                               return elem.innerHTML;
+                       }
+
+                       // See if we can take a shortcut and just use innerHTML
+                       if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
+                               !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
+
+                               value = jQuery.htmlPrefilter( value );
+
+                               try {
+                                       for ( ; i < l; i++ ) {
+                                               elem = this[ i ] || {};
+
+                                               // Remove element nodes and prevent memory leaks
+                                               if ( elem.nodeType === 1 ) {
+                                                       jQuery.cleanData( getAll( elem, false ) );
+                                                       elem.innerHTML = value;
+                                               }
+                                       }
+
+                                       elem = 0;
+
+                               // If using innerHTML throws an exception, use the fallback method
+                               } catch ( e ) {}
+                       }
+
+                       if ( elem ) {
+                               this.empty().append( value );
+                       }
+               }, null, value, arguments.length );
+       },
+
+       replaceWith: function() {
+               var ignored = [];
+
+               // Make the changes, replacing each non-ignored context element with the new content
+               return domManip( this, arguments, function( elem ) {
+                       var parent = this.parentNode;
+
+                       if ( jQuery.inArray( this, ignored ) < 0 ) {
+                               jQuery.cleanData( getAll( this ) );
+                               if ( parent ) {
+                                       parent.replaceChild( elem, this );
+                               }
+                       }
+
+               // Force callback invocation
+               }, ignored );
+       }
+} );
+
+jQuery.each( {
+       appendTo: "append",
+       prependTo: "prepend",
+       insertBefore: "before",
+       insertAfter: "after",
+       replaceAll: "replaceWith"
+}, function( name, original ) {
+       jQuery.fn[ name ] = function( selector ) {
+               var elems,
+                       ret = [],
+                       insert = jQuery( selector ),
+                       last = insert.length - 1,
+                       i = 0;
+
+               for ( ; i <= last; i++ ) {
+                       elems = i === last ? this : this.clone( true );
+                       jQuery( insert[ i ] )[ original ]( elems );
+
+                       // Support: Android <=4.0 only, PhantomJS 1 only
+                       // .get() because push.apply(_, arraylike) throws on ancient WebKit
+                       push.apply( ret, elems.get() );
+               }
+
+               return this.pushStack( ret );
+       };
+} );
+var rmargin = ( /^margin/ );
+
+var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
+
+var getStyles = function( elem ) {
+
+               // Support: IE <=11 only, Firefox <=30 (#15098, #14150)
+               // IE throws on elements created in popups
+               // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
+               var view = elem.ownerDocument.defaultView;
+
+               if ( !view || !view.opener ) {
+                       view = window;
+               }
+
+               return view.getComputedStyle( elem );
+       };
+
+
+
+( function() {
+
+       // Executing both pixelPosition & boxSizingReliable tests require only one layout
+       // so they're executed at the same time to save the second computation.
+       function computeStyleTests() {
+
+               // This is a singleton, we need to execute it only once
+               if ( !div ) {
+                       return;
+               }
+
+               div.style.cssText =
+                       "box-sizing:border-box;" +
+                       "position:relative;display:block;" +
+                       "margin:auto;border:1px;padding:1px;" +
+                       "top:1%;width:50%";
+               div.innerHTML = "";
+               documentElement.appendChild( container );
+
+               var divStyle = window.getComputedStyle( div );
+               pixelPositionVal = divStyle.top !== "1%";
+
+               // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
+               reliableMarginLeftVal = divStyle.marginLeft === "2px";
+               boxSizingReliableVal = divStyle.width === "4px";
+
+               // Support: Android 4.0 - 4.3 only
+               // Some styles come back with percentage values, even though they shouldn't
+               div.style.marginRight = "50%";
+               pixelMarginRightVal = divStyle.marginRight === "4px";
+
+               documentElement.removeChild( container );
+
+               // Nullify the div so it wouldn't be stored in the memory and
+               // it will also be a sign that checks already performed
+               div = null;
+       }
+
+       var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
+               container = document.createElement( "div" ),
+               div = document.createElement( "div" );
+
+       // Finish early in limited (non-browser) environments
+       if ( !div.style ) {
+               return;
+       }
+
+       // Support: IE <=9 - 11 only
+       // Style of cloned element affects source element cloned (#8908)
+       div.style.backgroundClip = "content-box";
+       div.cloneNode( true ).style.backgroundClip = "";
+       support.clearCloneStyle = div.style.backgroundClip === "content-box";
+
+       container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
+               "padding:0;margin-top:1px;position:absolute";
+       container.appendChild( div );
+
+       jQuery.extend( support, {
+               pixelPosition: function() {
+                       computeStyleTests();
+                       return pixelPositionVal;
+               },
+               boxSizingReliable: function() {
+                       computeStyleTests();
+                       return boxSizingReliableVal;
+               },
+               pixelMarginRight: function() {
+                       computeStyleTests();
+                       return pixelMarginRightVal;
+               },
+               reliableMarginLeft: function() {
+                       computeStyleTests();
+                       return reliableMarginLeftVal;
+               }
+       } );
+} )();
+
+
+function curCSS( elem, name, computed ) {
+       var width, minWidth, maxWidth, ret,
+
+               // Support: Firefox 51+
+               // Retrieving style before computed somehow
+               // fixes an issue with getting wrong values
+               // on detached elements
+               style = elem.style;
+
+       computed = computed || getStyles( elem );
+
+       // getPropertyValue is needed for:
+       //   .css('filter') (IE 9 only, #12537)
+       //   .css('--customProperty) (#3144)
+       if ( computed ) {
+               ret = computed.getPropertyValue( name ) || computed[ name ];
+
+               if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+                       ret = jQuery.style( elem, name );
+               }
+
+               // A tribute to the "awesome hack by Dean Edwards"
+               // Android Browser returns percentage for some values,
+               // but width seems to be reliably pixels.
+               // This is against the CSSOM draft spec:
+               // https://drafts.csswg.org/cssom/#resolved-values
+               if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+
+                       // Remember the original values
+                       width = style.width;
+                       minWidth = style.minWidth;
+                       maxWidth = style.maxWidth;
+
+                       // Put in the new values to get a computed value out
+                       style.minWidth = style.maxWidth = style.width = ret;
+                       ret = computed.width;
+
+                       // Revert the changed values
+                       style.width = width;
+                       style.minWidth = minWidth;
+                       style.maxWidth = maxWidth;
+               }
+       }
+
+       return ret !== undefined ?
+
+               // Support: IE <=9 - 11 only
+               // IE returns zIndex value as an integer.
+               ret + "" :
+               ret;
+}
+
+
+function addGetHookIf( conditionFn, hookFn ) {
+
+       // Define the hook, we'll check on the first run if it's really needed.
+       return {
+               get: function() {
+                       if ( conditionFn() ) {
+
+                               // Hook not needed (or it's not possible to use it due
+                               // to missing dependency), remove it.
+                               delete this.get;
+                               return;
+                       }
+
+                       // Hook needed; redefine it so that the support test is not executed again.
+                       return ( this.get = hookFn ).apply( this, arguments );
+               }
+       };
+}
+
+
+var
+
+       // Swappable if display is none or starts with table
+       // except "table", "table-cell", or "table-caption"
+       // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+       rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+       rcustomProp = /^--/,
+       cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+       cssNormalTransform = {
+               letterSpacing: "0",
+               fontWeight: "400"
+       },
+
+       cssPrefixes = [ "Webkit", "Moz", "ms" ],
+       emptyStyle = document.createElement( "div" ).style;
+
+// Return a css property mapped to a potentially vendor prefixed property
+function vendorPropName( name ) {
+
+       // Shortcut for names that are not vendor prefixed
+       if ( name in emptyStyle ) {
+               return name;
+       }
+
+       // Check for vendor prefixed names
+       var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
+               i = cssPrefixes.length;
+
+       while ( i-- ) {
+               name = cssPrefixes[ i ] + capName;
+               if ( name in emptyStyle ) {
+                       return name;
+               }
+       }
+}
+
+// Return a property mapped along what jQuery.cssProps suggests or to
+// a vendor prefixed property.
+function finalPropName( name ) {
+       var ret = jQuery.cssProps[ name ];
+       if ( !ret ) {
+               ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
+       }
+       return ret;
+}
+
+function setPositiveNumber( elem, value, subtract ) {
+
+       // Any relative (+/-) values have already been
+       // normalized at this point
+       var matches = rcssNum.exec( value );
+       return matches ?
+
+               // Guard against undefined "subtract", e.g., when used as in cssHooks
+               Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
+               value;
+}
+
+function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
+       var i,
+               val = 0;
+
+       // If we already have the right measurement, avoid augmentation
+       if ( extra === ( isBorderBox ? "border" : "content" ) ) {
+               i = 4;
+
+       // Otherwise initialize for horizontal or vertical properties
+       } else {
+               i = name === "width" ? 1 : 0;
+       }
+
+       for ( ; i < 4; i += 2 ) {
+
+               // Both box models exclude margin, so add it if we want it
+               if ( extra === "margin" ) {
+                       val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
+               }
+
+               if ( isBorderBox ) {
+
+                       // border-box includes padding, so remove it if we want content
+                       if ( extra === "content" ) {
+                               val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+                       }
+
+                       // At this point, extra isn't border nor margin, so remove border
+                       if ( extra !== "margin" ) {
+                               val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+                       }
+               } else {
+
+                       // At this point, extra isn't content, so add padding
+                       val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+
+                       // At this point, extra isn't content nor padding, so add border
+                       if ( extra !== "padding" ) {
+                               val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+                       }
+               }
+       }
+
+       return val;
+}
+
+function getWidthOrHeight( elem, name, extra ) {
+
+       // Start with computed style
+       var valueIsBorderBox,
+               styles = getStyles( elem ),
+               val = curCSS( elem, name, styles ),
+               isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+
+       // Computed unit is not pixels. Stop here and return.
+       if ( rnumnonpx.test( val ) ) {
+               return val;
+       }
+
+       // Check for style in case a browser which returns unreliable values
+       // for getComputedStyle silently falls back to the reliable elem.style
+       valueIsBorderBox = isBorderBox &&
+               ( support.boxSizingReliable() || val === elem.style[ name ] );
+
+       // Fall back to offsetWidth/Height when value is "auto"
+       // This happens for inline elements with no explicit setting (gh-3571)
+       if ( val === "auto" ) {
+               val = elem[ "offset" + name[ 0 ].toUpperCase() + name.slice( 1 ) ];
+       }
+
+       // Normalize "", auto, and prepare for extra
+       val = parseFloat( val ) || 0;
+
+       // Use the active box-sizing model to add/subtract irrelevant styles
+       return ( val +
+               augmentWidthOrHeight(
+                       elem,
+                       name,
+                       extra || ( isBorderBox ? "border" : "content" ),
+                       valueIsBorderBox,
+                       styles
+               )
+       ) + "px";
+}
+
+jQuery.extend( {
+
+       // Add in style property hooks for overriding the default
+       // behavior of getting and setting a style property
+       cssHooks: {
+               opacity: {
+                       get: function( elem, computed ) {
+                               if ( computed ) {
+
+                                       // We should always get a number back from opacity
+                                       var ret = curCSS( elem, "opacity" );
+                                       return ret === "" ? "1" : ret;
+                               }
+                       }
+               }
+       },
+
+       // Don't automatically add "px" to these possibly-unitless properties
+       cssNumber: {
+               "animationIterationCount": true,
+               "columnCount": true,
+               "fillOpacity": true,
+               "flexGrow": true,
+               "flexShrink": true,
+               "fontWeight": true,
+               "lineHeight": true,
+               "opacity": true,
+               "order": true,
+               "orphans": true,
+               "widows": true,
+               "zIndex": true,
+               "zoom": true
+       },
+
+       // Add in properties whose names you wish to fix before
+       // setting or getting the value
+       cssProps: {
+               "float": "cssFloat"
+       },
+
+       // Get and set the style property on a DOM Node
+       style: function( elem, name, value, extra ) {
+
+               // Don't set styles on text and comment nodes
+               if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
+                       return;
+               }
+
+               // Make sure that we're working with the right name
+               var ret, type, hooks,
+                       origName = jQuery.camelCase( name ),
+                       isCustomProp = rcustomProp.test( name ),
+                       style = elem.style;
+
+               // Make sure that we're working with the right name. We don't
+               // want to query the value if it is a CSS custom property
+               // since they are user-defined.
+               if ( !isCustomProp ) {
+                       name = finalPropName( origName );
+               }
+
+               // Gets hook for the prefixed version, then unprefixed version
+               hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+               // Check if we're setting a value
+               if ( value !== undefined ) {
+                       type = typeof value;
+
+                       // Convert "+=" or "-=" to relative numbers (#7345)
+                       if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
+                               value = adjustCSS( elem, name, ret );
+
+                               // Fixes bug #9237
+                               type = "number";
+                       }
+
+                       // Make sure that null and NaN values aren't set (#7116)
+                       if ( value == null || value !== value ) {
+                               return;
+                       }
+
+                       // If a number was passed in, add the unit (except for certain CSS properties)
+                       if ( type === "number" ) {
+                               value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
+                       }
+
+                       // background-* props affect original clone's values
+                       if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
+                               style[ name ] = "inherit";
+                       }
+
+                       // If a hook was provided, use that value, otherwise just set the specified value
+                       if ( !hooks || !( "set" in hooks ) ||
+                               ( value = hooks.set( elem, value, extra ) ) !== undefined ) {
+
+                               if ( isCustomProp ) {
+                                       style.setProperty( name, value );
+                               } else {
+                                       style[ name ] = value;
+                               }
+                       }
+
+               } else {
+
+                       // If a hook was provided get the non-computed value from there
+                       if ( hooks && "get" in hooks &&
+                               ( ret = hooks.get( elem, false, extra ) ) !== undefined ) {
+
+                               return ret;
+                       }
+
+                       // Otherwise just get the value from the style object
+                       return style[ name ];
+               }
+       },
+
+       css: function( elem, name, extra, styles ) {
+               var val, num, hooks,
+                       origName = jQuery.camelCase( name ),
+                       isCustomProp = rcustomProp.test( name );
+
+               // Make sure that we're working with the right name. We don't
+               // want to modify the value if it is a CSS custom property
+               // since they are user-defined.
+               if ( !isCustomProp ) {
+                       name = finalPropName( origName );
+               }
+
+               // Try prefixed name followed by the unprefixed name
+               hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+               // If a hook was provided get the computed value from there
+               if ( hooks && "get" in hooks ) {
+                       val = hooks.get( elem, true, extra );
+               }
+
+               // Otherwise, if a way to get the computed value exists, use that
+               if ( val === undefined ) {
+                       val = curCSS( elem, name, styles );
+               }
+
+               // Convert "normal" to computed value
+               if ( val === "normal" && name in cssNormalTransform ) {
+                       val = cssNormalTransform[ name ];
+               }
+
+               // Make numeric if forced or a qualifier was provided and val looks numeric
+               if ( extra === "" || extra ) {
+                       num = parseFloat( val );
+                       return extra === true || isFinite( num ) ? num || 0 : val;
+               }
+
+               return val;
+       }
+} );
+
+jQuery.each( [ "height", "width" ], function( i, name ) {
+       jQuery.cssHooks[ name ] = {
+               get: function( elem, computed, extra ) {
+                       if ( computed ) {
+
+                               // Certain elements can have dimension info if we invisibly show them
+                               // but it must have a current display style that would benefit
+                               return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
+
+                                       // Support: Safari 8+
+                                       // Table columns in Safari have non-zero offsetWidth & zero
+                                       // getBoundingClientRect().width unless display is changed.
+                                       // Support: IE <=11 only
+                                       // Running getBoundingClientRect on a disconnected node
+                                       // in IE throws an error.
+                                       ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
+                                               swap( elem, cssShow, function() {
+                                                       return getWidthOrHeight( elem, name, extra );
+                                               } ) :
+                                               getWidthOrHeight( elem, name, extra );
+                       }
+               },
+
+               set: function( elem, value, extra ) {
+                       var matches,
+                               styles = extra && getStyles( elem ),
+                               subtract = extra && augmentWidthOrHeight(
+                                       elem,
+                                       name,
+                                       extra,
+                                       jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
+                                       styles
+                               );
+
+                       // Convert to pixels if value adjustment is needed
+                       if ( subtract && ( matches = rcssNum.exec( value ) ) &&
+                               ( matches[ 3 ] || "px" ) !== "px" ) {
+
+                               elem.style[ name ] = value;
+                               value = jQuery.css( elem, name );
+                       }
+
+                       return setPositiveNumber( elem, value, subtract );
+               }
+       };
+} );
+
+jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
+       function( elem, computed ) {
+               if ( computed ) {
+                       return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
+                               elem.getBoundingClientRect().left -
+                                       swap( elem, { marginLeft: 0 }, function() {
+                                               return elem.getBoundingClientRect().left;
+                                       } )
+                               ) + "px";
+               }
+       }
+);
+
+// These hooks are used by animate to expand properties
+jQuery.each( {
+       margin: "",
+       padding: "",
+       border: "Width"
+}, function( prefix, suffix ) {
+       jQuery.cssHooks[ prefix + suffix ] = {
+               expand: function( value ) {
+                       var i = 0,
+                               expanded = {},
+
+                               // Assumes a single number if not a string
+                               parts = typeof value === "string" ? value.split( " " ) : [ value ];
+
+                       for ( ; i < 4; i++ ) {
+                               expanded[ prefix + cssExpand[ i ] + suffix ] =
+                                       parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
+                       }
+
+                       return expanded;
+               }
+       };
+
+       if ( !rmargin.test( prefix ) ) {
+               jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
+       }
+} );
+
+jQuery.fn.extend( {
+       css: function( name, value ) {
+               return access( this, function( elem, name, value ) {
+                       var styles, len,
+                               map = {},
+                               i = 0;
+
+                       if ( Array.isArray( name ) ) {
+                               styles = getStyles( elem );
+                               len = name.length;
+
+                               for ( ; i < len; i++ ) {
+                                       map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
+                               }
+
+                               return map;
+                       }
+
+                       return value !== undefined ?
+                               jQuery.style( elem, name, value ) :
+                               jQuery.css( elem, name );
+               }, name, value, arguments.length > 1 );
+       }
+} );
+
+
+function Tween( elem, options, prop, end, easing ) {
+       return new Tween.prototype.init( elem, options, prop, end, easing );
+}
+jQuery.Tween = Tween;
+
+Tween.prototype = {
+       constructor: Tween,
+       init: function( elem, options, prop, end, easing, unit ) {
+               this.elem = elem;
+               this.prop = prop;
+               this.easing = easing || jQuery.easing._default;
+               this.options = options;
+               this.start = this.now = this.cur();
+               this.end = end;
+               this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+       },
+       cur: function() {
+               var hooks = Tween.propHooks[ this.prop ];
+
+               return hooks && hooks.get ?
+                       hooks.get( this ) :
+                       Tween.propHooks._default.get( this );
+       },
+       run: function( percent ) {
+               var eased,
+                       hooks = Tween.propHooks[ this.prop ];
+
+               if ( this.options.duration ) {
+                       this.pos = eased = jQuery.easing[ this.easing ](
+                               percent, this.options.duration * percent, 0, 1, this.options.duration
+                       );
+               } else {
+                       this.pos = eased = percent;
+               }
+               this.now = ( this.end - this.start ) * eased + this.start;
+
+               if ( this.options.step ) {
+                       this.options.step.call( this.elem, this.now, this );
+               }
+
+               if ( hooks && hooks.set ) {
+                       hooks.set( this );
+               } else {
+                       Tween.propHooks._default.set( this );
+               }
+               return this;
+       }
+};
+
+Tween.prototype.init.prototype = Tween.prototype;
+
+Tween.propHooks = {
+       _default: {
+               get: function( tween ) {
+                       var result;
+
+                       // Use a property on the element directly when it is not a DOM element,
+                       // or when there is no matching style property that exists.
+                       if ( tween.elem.nodeType !== 1 ||
+                               tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
+                               return tween.elem[ tween.prop ];
+                       }
+
+                       // Passing an empty string as a 3rd parameter to .css will automatically
+                       // attempt a parseFloat and fallback to a string if the parse fails.
+                       // Simple values such as "10px" are parsed to Float;
+                       // complex values such as "rotate(1rad)" are returned as-is.
+                       result = jQuery.css( tween.elem, tween.prop, "" );
+
+                       // Empty strings, null, undefined and "auto" are converted to 0.
+                       return !result || result === "auto" ? 0 : result;
+               },
+               set: function( tween ) {
+
+                       // Use step hook for back compat.
+                       // Use cssHook if its there.
+                       // Use .style if available and use plain properties where available.
+                       if ( jQuery.fx.step[ tween.prop ] ) {
+                               jQuery.fx.step[ tween.prop ]( tween );
+                       } else if ( tween.elem.nodeType === 1 &&
+                               ( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
+                                       jQuery.cssHooks[ tween.prop ] ) ) {
+                               jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
+                       } else {
+                               tween.elem[ tween.prop ] = tween.now;
+                       }
+               }
+       }
+};
+
+// Support: IE <=9 only
+// Panic based approach to setting things on disconnected nodes
+Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
+       set: function( tween ) {
+               if ( tween.elem.nodeType && tween.elem.parentNode ) {
+                       tween.elem[ tween.prop ] = tween.now;
+               }
+       }
+};
+
+jQuery.easing = {
+       linear: function( p ) {
+               return p;
+       },
+       swing: function( p ) {
+               return 0.5 - Math.cos( p * Math.PI ) / 2;
+       },
+       _default: "swing"
+};
+
+jQuery.fx = Tween.prototype.init;
+
+// Back compat <1.8 extension point
+jQuery.fx.step = {};
+
+
+
+
+var
+       fxNow, inProgress,
+       rfxtypes = /^(?:toggle|show|hide)$/,
+       rrun = /queueHooks$/;
+
+function schedule() {
+       if ( inProgress ) {
+               if ( document.hidden === false && window.requestAnimationFrame ) {
+                       window.requestAnimationFrame( schedule );
+               } else {
+                       window.setTimeout( schedule, jQuery.fx.interval );
+               }
+
+               jQuery.fx.tick();
+       }
+}
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+       window.setTimeout( function() {
+               fxNow = undefined;
+       } );
+       return ( fxNow = jQuery.now() );
+}
+
+// Generate parameters to create a standard animation
+function genFx( type, includeWidth ) {
+       var which,
+               i = 0,
+               attrs = { height: type };
+
+       // If we include width, step value is 1 to do all cssExpand values,
+       // otherwise step value is 2 to skip over Left and Right
+       includeWidth = includeWidth ? 1 : 0;
+       for ( ; i < 4; i += 2 - includeWidth ) {
+               which = cssExpand[ i ];
+               attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
+       }
+
+       if ( includeWidth ) {
+               attrs.opacity = attrs.width = type;
+       }
+
+       return attrs;
+}
+
+function createTween( value, prop, animation ) {
+       var tween,
+               collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
+               index = 0,
+               length = collection.length;
+       for ( ; index < length; index++ ) {
+               if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {
+
+                       // We're done with this property
+                       return tween;
+               }
+       }
+}
+
+function defaultPrefilter( elem, props, opts ) {
+       var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
+               isBox = "width" in props || "height" in props,
+               anim = this,
+               orig = {},
+               style = elem.style,
+               hidden = elem.nodeType && isHiddenWithinTree( elem ),
+               dataShow = dataPriv.get( elem, "fxshow" );
+
+       // Queue-skipping animations hijack the fx hooks
+       if ( !opts.queue ) {
+               hooks = jQuery._queueHooks( elem, "fx" );
+               if ( hooks.unqueued == null ) {
+                       hooks.unqueued = 0;
+                       oldfire = hooks.empty.fire;
+                       hooks.empty.fire = function() {
+                               if ( !hooks.unqueued ) {
+                                       oldfire();
+                               }
+                       };
+               }
+               hooks.unqueued++;
+
+               anim.always( function() {
+
+                       // Ensure the complete handler is called before this completes
+                       anim.always( function() {
+                               hooks.unqueued--;
+                               if ( !jQuery.queue( elem, "fx" ).length ) {
+                                       hooks.empty.fire();
+                               }
+                       } );
+               } );
+       }
+
+       // Detect show/hide animations
+       for ( prop in props ) {
+               value = props[ prop ];
+               if ( rfxtypes.test( value ) ) {
+                       delete props[ prop ];
+                       toggle = toggle || value === "toggle";
+                       if ( value === ( hidden ? "hide" : "show" ) ) {
+
+                               // Pretend to be hidden if this is a "show" and
+                               // there is still data from a stopped show/hide
+                               if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
+                                       hidden = true;
+
+                               // Ignore all other no-op show/hide data
+                               } else {
+                                       continue;
+                               }
+                       }
+                       orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
+               }
+       }
+
+       // Bail out if this is a no-op like .hide().hide()
+       propTween = !jQuery.isEmptyObject( props );
+       if ( !propTween && jQuery.isEmptyObject( orig ) ) {
+               return;
+       }
+
+       // Restrict "overflow" and "display" styles during box animations
+       if ( isBox && elem.nodeType === 1 ) {
+
+               // Support: IE <=9 - 11, Edge 12 - 13
+               // Record all 3 overflow attributes because IE does not infer the shorthand
+               // from identically-valued overflowX and overflowY
+               opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
+
+               // Identify a display type, preferring old show/hide data over the CSS cascade
+               restoreDisplay = dataShow && dataShow.display;
+               if ( restoreDisplay == null ) {
+                       restoreDisplay = dataPriv.get( elem, "display" );
+               }
+               display = jQuery.css( elem, "display" );
+               if ( display === "none" ) {
+                       if ( restoreDisplay ) {
+                               display = restoreDisplay;
+                       } else {
+
+                               // Get nonempty value(s) by temporarily forcing visibility
+                               showHide( [ elem ], true );
+                               restoreDisplay = elem.style.display || restoreDisplay;
+                               display = jQuery.css( elem, "display" );
+                               showHide( [ elem ] );
+                       }
+               }
+
+               // Animate inline elements as inline-block
+               if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
+                       if ( jQuery.css( elem, "float" ) === "none" ) {
+
+                               // Restore the original display value at the end of pure show/hide animations
+                               if ( !propTween ) {
+                                       anim.done( function() {
+                                               style.display = restoreDisplay;
+                                       } );
+                                       if ( restoreDisplay == null ) {
+                                               display = style.display;
+                                               restoreDisplay = display === "none" ? "" : display;
+                                       }
+                               }
+                               style.display = "inline-block";
+                       }
+               }
+       }
+
+       if ( opts.overflow ) {
+               style.overflow = "hidden";
+               anim.always( function() {
+                       style.overflow = opts.overflow[ 0 ];
+                       style.overflowX = opts.overflow[ 1 ];
+                       style.overflowY = opts.overflow[ 2 ];
+               } );
+       }
+
+       // Implement show/hide animations
+       propTween = false;
+       for ( prop in orig ) {
+
+               // General show/hide setup for this element animation
+               if ( !propTween ) {
+                       if ( dataShow ) {
+                               if ( "hidden" in dataShow ) {
+                                       hidden = dataShow.hidden;
+                               }
+                       } else {
+                               dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
+                       }
+
+                       // Store hidden/visible for toggle so `.stop().toggle()` "reverses"
+                       if ( toggle ) {
+                               dataShow.hidden = !hidden;
+                       }
+
+                       // Show elements before animating them
+                       if ( hidden ) {
+                               showHide( [ elem ], true );
+                       }
+
+                       /* eslint-disable no-loop-func */
+
+                       anim.done( function() {
+
+                       /* eslint-enable no-loop-func */
+
+                               // The final step of a "hide" animation is actually hiding the element
+                               if ( !hidden ) {
+                                       showHide( [ elem ] );
+                               }
+                               dataPriv.remove( elem, "fxshow" );
+                               for ( prop in orig ) {
+                                       jQuery.style( elem, prop, orig[ prop ] );
+                               }
+                       } );
+               }
+
+               // Per-property setup
+               propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
+               if ( !( prop in dataShow ) ) {
+                       dataShow[ prop ] = propTween.start;
+                       if ( hidden ) {
+                               propTween.end = propTween.start;
+                               propTween.start = 0;
+                       }
+               }
+       }
+}
+
+function propFilter( props, specialEasing ) {
+       var index, name, easing, value, hooks;
+
+       // camelCase, specialEasing and expand cssHook pass
+       for ( index in props ) {
+               name = jQuery.camelCase( index );
+               easing = specialEasing[ name ];
+               value = props[ index ];
+               if ( Array.isArray( value ) ) {
+                       easing = value[ 1 ];
+                       value = props[ index ] = value[ 0 ];
+               }
+
+               if ( index !== name ) {
+                       props[ name ] = value;
+                       delete props[ index ];
+               }
+
+               hooks = jQuery.cssHooks[ name ];
+               if ( hooks && "expand" in hooks ) {
+                       value = hooks.expand( value );
+                       delete props[ name ];
+
+                       // Not quite $.extend, this won't overwrite existing keys.
+                       // Reusing 'index' because we have the correct "name"
+                       for ( index in value ) {
+                               if ( !( index in props ) ) {
+                                       props[ index ] = value[ index ];
+                                       specialEasing[ index ] = easing;
+                               }
+                       }
+               } else {
+                       specialEasing[ name ] = easing;
+               }
+       }
+}
+
+function Animation( elem, properties, options ) {
+       var result,
+               stopped,
+               index = 0,
+               length = Animation.prefilters.length,
+               deferred = jQuery.Deferred().always( function() {
+
+                       // Don't match elem in the :animated selector
+                       delete tick.elem;
+               } ),
+               tick = function() {
+                       if ( stopped ) {
+                               return false;
+                       }
+                       var currentTime = fxNow || createFxNow(),
+                               remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
+
+                               // Support: Android 2.3 only
+                               // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
+                               temp = remaining / animation.duration || 0,
+                               percent = 1 - temp,
+                               index = 0,
+                               length = animation.tweens.length;
+
+                       for ( ; index < length; index++ ) {
+                               animation.tweens[ index ].run( percent );
+                       }
+
+                       deferred.notifyWith( elem, [ animation, percent, remaining ] );
+
+                       // If there's more to do, yield
+                       if ( percent < 1 && length ) {
+                               return remaining;
+                       }
+
+                       // If this was an empty animation, synthesize a final progress notification
+                       if ( !length ) {
+                               deferred.notifyWith( elem, [ animation, 1, 0 ] );
+                       }
+
+                       // Resolve the animation and report its conclusion
+                       deferred.resolveWith( elem, [ animation ] );
+                       return false;
+               },
+               animation = deferred.promise( {
+                       elem: elem,
+                       props: jQuery.extend( {}, properties ),
+                       opts: jQuery.extend( true, {
+                               specialEasing: {},
+                               easing: jQuery.easing._default
+                       }, options ),
+                       originalProperties: properties,
+                       originalOptions: options,
+                       startTime: fxNow || createFxNow(),
+                       duration: options.duration,
+                       tweens: [],
+                       createTween: function( prop, end ) {
+                               var tween = jQuery.Tween( elem, animation.opts, prop, end,
+                                               animation.opts.specialEasing[ prop ] || animation.opts.easing );
+                               animation.tweens.push( tween );
+                               return tween;
+                       },
+                       stop: function( gotoEnd ) {
+                               var index = 0,
+
+                                       // If we are going to the end, we want to run all the tweens
+                                       // otherwise we skip this part
+                                       length = gotoEnd ? animation.tweens.length : 0;
+                               if ( stopped ) {
+                                       return this;
+                               }
+                               stopped = true;
+                               for ( ; index < length; index++ ) {
+                                       animation.tweens[ index ].run( 1 );
+                               }
+
+                               // Resolve when we played the last frame; otherwise, reject
+                               if ( gotoEnd ) {
+                                       deferred.notifyWith( elem, [ animation, 1, 0 ] );
+                                       deferred.resolveWith( elem, [ animation, gotoEnd ] );
+                               } else {
+                                       deferred.rejectWith( elem, [ animation, gotoEnd ] );
+                               }
+                               return this;
+                       }
+               } ),
+               props = animation.props;
+
+       propFilter( props, animation.opts.specialEasing );
+
+       for ( ; index < length; index++ ) {
+               result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
+               if ( result ) {
+                       if ( jQuery.isFunction( result.stop ) ) {
+                               jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
+                                       jQuery.proxy( result.stop, result );
+                       }
+                       return result;
+               }
+       }
+
+       jQuery.map( props, createTween, animation );
+
+       if ( jQuery.isFunction( animation.opts.start ) ) {
+               animation.opts.start.call( elem, animation );
+       }
+
+       // Attach callbacks from options
+       animation
+               .progress( animation.opts.progress )
+               .done( animation.opts.done, animation.opts.complete )
+               .fail( animation.opts.fail )
+               .always( animation.opts.always );
+
+       jQuery.fx.timer(
+               jQuery.extend( tick, {
+                       elem: elem,
+                       anim: animation,
+                       queue: animation.opts.queue
+               } )
+       );
+
+       return animation;
+}
+
+jQuery.Animation = jQuery.extend( Animation, {
+
+       tweeners: {
+               "*": [ function( prop, value ) {
+                       var tween = this.createTween( prop, value );
+                       adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
+                       return tween;
+               } ]
+       },
+
+       tweener: function( props, callback ) {
+               if ( jQuery.isFunction( props ) ) {
+                       callback = props;
+                       props = [ "*" ];
+               } else {
+                       props = props.match( rnothtmlwhite );
+               }
+
+               var prop,
+                       index = 0,
+                       length = props.length;
+
+               for ( ; index < length; index++ ) {
+                       prop = props[ index ];
+                       Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
+                       Animation.tweeners[ prop ].unshift( callback );
+               }
+       },
+
+       prefilters: [ defaultPrefilter ],
+
+       prefilter: function( callback, prepend ) {
+               if ( prepend ) {
+                       Animation.prefilters.unshift( callback );
+               } else {
+                       Animation.prefilters.push( callback );
+               }
+       }
+} );
+
+jQuery.speed = function( speed, easing, fn ) {
+       var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
+               complete: fn || !fn && easing ||
+                       jQuery.isFunction( speed ) && speed,
+               duration: speed,
+               easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+       };
+
+       // Go to the end state if fx are off
+       if ( jQuery.fx.off ) {
+               opt.duration = 0;
+
+       } else {
+               if ( typeof opt.duration !== "number" ) {
+                       if ( opt.duration in jQuery.fx.speeds ) {
+                               opt.duration = jQuery.fx.speeds[ opt.duration ];
+
+                       } else {
+                               opt.duration = jQuery.fx.speeds._default;
+                       }
+               }
+       }
+
+       // Normalize opt.queue - true/undefined/null -> "fx"
+       if ( opt.queue == null || opt.queue === true ) {
+               opt.queue = "fx";
+       }
+
+       // Queueing
+       opt.old = opt.complete;
+
+       opt.complete = function() {
+               if ( jQuery.isFunction( opt.old ) ) {
+                       opt.old.call( this );
+               }
+
+               if ( opt.queue ) {
+                       jQuery.dequeue( this, opt.queue );
+               }
+       };
+
+       return opt;
+};
+
+jQuery.fn.extend( {
+       fadeTo: function( speed, to, easing, callback ) {
+
+               // Show any hidden elements after setting opacity to 0
+               return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()
+
+                       // Animate to the value specified
+                       .end().animate( { opacity: to }, speed, easing, callback );
+       },
+       animate: function( prop, speed, easing, callback ) {
+               var empty = jQuery.isEmptyObject( prop ),
+                       optall = jQuery.speed( speed, easing, callback ),
+                       doAnimation = function() {
+
+                               // Operate on a copy of prop so per-property easing won't be lost
+                               var anim = Animation( this, jQuery.extend( {}, prop ), optall );
+
+                               // Empty animations, or finishing resolves immediately
+                               if ( empty || dataPriv.get( this, "finish" ) ) {
+                                       anim.stop( true );
+                               }
+                       };
+                       doAnimation.finish = doAnimation;
+
+               return empty || optall.queue === false ?
+                       this.each( doAnimation ) :
+                       this.queue( optall.queue, doAnimation );
+       },
+       stop: function( type, clearQueue, gotoEnd ) {
+               var stopQueue = function( hooks ) {
+                       var stop = hooks.stop;
+                       delete hooks.stop;
+                       stop( gotoEnd );
+               };
+
+               if ( typeof type !== "string" ) {
+                       gotoEnd = clearQueue;
+                       clearQueue = type;
+                       type = undefined;
+               }
+               if ( clearQueue && type !== false ) {
+                       this.queue( type || "fx", [] );
+               }
+
+               return this.each( function() {
+                       var dequeue = true,
+                               index = type != null && type + "queueHooks",
+                               timers = jQuery.timers,
+                               data = dataPriv.get( this );
+
+                       if ( index ) {
+                               if ( data[ index ] && data[ index ].stop ) {
+                                       stopQueue( data[ index ] );
+                               }
+                       } else {
+                               for ( index in data ) {
+                                       if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
+                                               stopQueue( data[ index ] );
+                                       }
+                               }
+                       }
+
+                       for ( index = timers.length; index--; ) {
+                               if ( timers[ index ].elem === this &&
+                                       ( type == null || timers[ index ].queue === type ) ) {
+
+                                       timers[ index ].anim.stop( gotoEnd );
+                                       dequeue = false;
+                                       timers.splice( index, 1 );
+                               }
+                       }
+
+                       // Start the next in the queue if the last step wasn't forced.
+                       // Timers currently will call their complete callbacks, which
+                       // will dequeue but only if they were gotoEnd.
+                       if ( dequeue || !gotoEnd ) {
+                               jQuery.dequeue( this, type );
+                       }
+               } );
+       },
+       finish: function( type ) {
+               if ( type !== false ) {
+                       type = type || "fx";
+               }
+               return this.each( function() {
+                       var index,
+                               data = dataPriv.get( this ),
+                               queue = data[ type + "queue" ],
+                               hooks = data[ type + "queueHooks" ],
+                               timers = jQuery.timers,
+                               length = queue ? queue.length : 0;
+
+                       // Enable finishing flag on private data
+                       data.finish = true;
+
+                       // Empty the queue first
+                       jQuery.queue( this, type, [] );
+
+                       if ( hooks && hooks.stop ) {
+                               hooks.stop.call( this, true );
+                       }
+
+                       // Look for any active animations, and finish them
+                       for ( index = timers.length; index--; ) {
+                               if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
+                                       timers[ index ].anim.stop( true );
+                                       timers.splice( index, 1 );
+                               }
+                       }
+
+                       // Look for any animations in the old queue and finish them
+                       for ( index = 0; index < length; index++ ) {
+                               if ( queue[ index ] && queue[ index ].finish ) {
+                                       queue[ index ].finish.call( this );
+                               }
+                       }
+
+                       // Turn off finishing flag
+                       delete data.finish;
+               } );
+       }
+} );
+
+jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
+       var cssFn = jQuery.fn[ name ];
+       jQuery.fn[ name ] = function( speed, easing, callback ) {
+               return speed == null || typeof speed === "boolean" ?
+                       cssFn.apply( this, arguments ) :
+                       this.animate( genFx( name, true ), speed, easing, callback );
+       };
+} );
+
+// Generate shortcuts for custom animations
+jQuery.each( {
+       slideDown: genFx( "show" ),
+       slideUp: genFx( "hide" ),
+       slideToggle: genFx( "toggle" ),
+       fadeIn: { opacity: "show" },
+       fadeOut: { opacity: "hide" },
+       fadeToggle: { opacity: "toggle" }
+}, function( name, props ) {
+       jQuery.fn[ name ] = function( speed, easing, callback ) {
+               return this.animate( props, speed, easing, callback );
+       };
+} );
+
+jQuery.timers = [];
+jQuery.fx.tick = function() {
+       var timer,
+               i = 0,
+               timers = jQuery.timers;
+
+       fxNow = jQuery.now();
+
+       for ( ; i < timers.length; i++ ) {
+               timer = timers[ i ];
+
+               // Run the timer and safely remove it when done (allowing for external removal)
+               if ( !timer() && timers[ i ] === timer ) {
+                       timers.splice( i--, 1 );
+               }
+       }
+
+       if ( !timers.length ) {
+               jQuery.fx.stop();
+       }
+       fxNow = undefined;
+};
+
+jQuery.fx.timer = function( timer ) {
+       jQuery.timers.push( timer );
+       jQuery.fx.start();
+};
+
+jQuery.fx.interval = 13;
+jQuery.fx.start = function() {
+       if ( inProgress ) {
+               return;
+       }
+
+       inProgress = true;
+       schedule();
+};
+
+jQuery.fx.stop = function() {
+       inProgress = null;
+};
+
+jQuery.fx.speeds = {
+       slow: 600,
+       fast: 200,
+
+       // Default speed
+       _default: 400
+};
+
+
+// Based off of the plugin by Clint Helfers, with permission.
+// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
+jQuery.fn.delay = function( time, type ) {
+       time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
+       type = type || "fx";
+
+       return this.queue( type, function( next, hooks ) {
+               var timeout = window.setTimeout( next, time );
+               hooks.stop = function() {
+                       window.clearTimeout( timeout );
+               };
+       } );
+};
+
+
+( function() {
+       var input = document.createElement( "input" ),
+               select = document.createElement( "select" ),
+               opt = select.appendChild( document.createElement( "option" ) );
+
+       input.type = "checkbox";
+
+       // Support: Android <=4.3 only
+       // Default value for a checkbox should be "on"
+       support.checkOn = input.value !== "";
+
+       // Support: IE <=11 only
+       // Must access selectedIndex to make default options select
+       support.optSelected = opt.selected;
+
+       // Support: IE <=11 only
+       // An input loses its value after becoming a radio
+       input = document.createElement( "input" );
+       input.value = "t";
+       input.type = "radio";
+       support.radioValue = input.value === "t";
+} )();
+
+
+var boolHook,
+       attrHandle = jQuery.expr.attrHandle;
+
+jQuery.fn.extend( {
+       attr: function( name, value ) {
+               return access( this, jQuery.attr, name, value, arguments.length > 1 );
+       },
+
+       removeAttr: function( name ) {
+               return this.each( function() {
+                       jQuery.removeAttr( this, name );
+               } );
+       }
+} );
+
+jQuery.extend( {
+       attr: function( elem, name, value ) {
+               var ret, hooks,
+                       nType = elem.nodeType;
+
+               // Don't get/set attributes on text, comment and attribute nodes
+               if ( nType === 3 || nType === 8 || nType === 2 ) {
+                       return;
+               }
+
+               // Fallback to prop when attributes are not supported
+               if ( typeof elem.getAttribute === "undefined" ) {
+                       return jQuery.prop( elem, name, value );
+               }
+
+               // Attribute hooks are determined by the lowercase version
+               // Grab necessary hook if one is defined
+               if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
+                       hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
+                               ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
+               }
+
+               if ( value !== undefined ) {
+                       if ( value === null ) {
+                               jQuery.removeAttr( elem, name );
+                               return;
+                       }
+
+                       if ( hooks && "set" in hooks &&
+                               ( ret = hooks.set( elem, value, name ) ) !== undefined ) {
+                               return ret;
+                       }
+
+                       elem.setAttribute( name, value + "" );
+                       return value;
+               }
+
+               if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
+                       return ret;
+               }
+
+               ret = jQuery.find.attr( elem, name );
+
+               // Non-existent attributes return null, we normalize to undefined
+               return ret == null ? undefined : ret;
+       },
+
+       attrHooks: {
+               type: {
+                       set: function( elem, value ) {
+                               if ( !support.radioValue && value === "radio" &&
+                                       nodeName( elem, "input" ) ) {
+                                       var val = elem.value;
+                                       elem.setAttribute( "type", value );
+                                       if ( val ) {
+                                               elem.value = val;
+                                       }
+                                       return value;
+                               }
+                       }
+               }
+       },
+
+       removeAttr: function( elem, value ) {
+               var name,
+                       i = 0,
+
+                       // Attribute names can contain non-HTML whitespace characters
+                       // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
+                       attrNames = value && value.match( rnothtmlwhite );
+
+               if ( attrNames && elem.nodeType === 1 ) {
+                       while ( ( name = attrNames[ i++ ] ) ) {
+                               elem.removeAttribute( name );
+                       }
+               }
+       }
+} );
+
+// Hooks for boolean attributes
+boolHook = {
+       set: function( elem, value, name ) {
+               if ( value === false ) {
+
+                       // Remove boolean attributes when set to false
+                       jQuery.removeAttr( elem, name );
+               } else {
+                       elem.setAttribute( name, name );
+               }
+               return name;
+       }
+};
+
+jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
+       var getter = attrHandle[ name ] || jQuery.find.attr;
+
+       attrHandle[ name ] = function( elem, name, isXML ) {
+               var ret, handle,
+                       lowercaseName = name.toLowerCase();
+
+               if ( !isXML ) {
+
+                       // Avoid an infinite loop by temporarily removing this function from the getter
+                       handle = attrHandle[ lowercaseName ];
+                       attrHandle[ lowercaseName ] = ret;
+                       ret = getter( elem, name, isXML ) != null ?
+                               lowercaseName :
+                               null;
+                       attrHandle[ lowercaseName ] = handle;
+               }
+               return ret;
+       };
+} );
+
+
+
+
+var rfocusable = /^(?:input|select|textarea|button)$/i,
+       rclickable = /^(?:a|area)$/i;
+
+jQuery.fn.extend( {
+       prop: function( name, value ) {
+               return access( this, jQuery.prop, name, value, arguments.length > 1 );
+       },
+
+       removeProp: function( name ) {
+               return this.each( function() {
+                       delete this[ jQuery.propFix[ name ] || name ];
+               } );
+       }
+} );
+
+jQuery.extend( {
+       prop: function( elem, name, value ) {
+               var ret, hooks,
+                       nType = elem.nodeType;
+
+               // Don't get/set properties on text, comment and attribute nodes
+               if ( nType === 3 || nType === 8 || nType === 2 ) {
+                       return;
+               }
+
+               if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
+
+                       // Fix name and attach hooks
+                       name = jQuery.propFix[ name ] || name;
+                       hooks = jQuery.propHooks[ name ];
+               }
+
+               if ( value !== undefined ) {
+                       if ( hooks && "set" in hooks &&
+                               ( ret = hooks.set( elem, value, name ) ) !== undefined ) {
+                               return ret;
+                       }
+
+                       return ( elem[ name ] = value );
+               }
+
+               if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
+                       return ret;
+               }
+
+               return elem[ name ];
+       },
+
+       propHooks: {
+               tabIndex: {
+                       get: function( elem ) {
+
+                               // Support: IE <=9 - 11 only
+                               // elem.tabIndex doesn't always return the
+                               // correct value when it hasn't been explicitly set
+                               // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+                               // Use proper attribute retrieval(#12072)
+                               var tabindex = jQuery.find.attr( elem, "tabindex" );
+
+                               if ( tabindex ) {
+                                       return parseInt( tabindex, 10 );
+                               }
+
+                               if (
+                                       rfocusable.test( elem.nodeName ) ||
+                                       rclickable.test( elem.nodeName ) &&
+                                       elem.href
+                               ) {
+                                       return 0;
+                               }
+
+                               return -1;
+                       }
+               }
+       },
+
+       propFix: {
+               "for": "htmlFor",
+               "class": "className"
+       }
+} );
+
+// Support: IE <=11 only
+// Accessing the selectedIndex property
+// forces the browser to respect setting selected
+// on the option
+// The getter ensures a default option is selected
+// when in an optgroup
+// eslint rule "no-unused-expressions" is disabled for this code
+// since it considers such accessions noop
+if ( !support.optSelected ) {
+       jQuery.propHooks.selected = {
+               get: function( elem ) {
+
+                       /* eslint no-unused-expressions: "off" */
+
+                       var parent = elem.parentNode;
+                       if ( parent && parent.parentNode ) {
+                               parent.parentNode.selectedIndex;
+                       }
+                       return null;
+               },
+               set: function( elem ) {
+
+                       /* eslint no-unused-expressions: "off" */
+
+                       var parent = elem.parentNode;
+                       if ( parent ) {
+                               parent.selectedIndex;
+
+                               if ( parent.parentNode ) {
+                                       parent.parentNode.selectedIndex;
+                               }
+                       }
+               }
+       };
+}
+
+jQuery.each( [
+       "tabIndex",
+       "readOnly",
+       "maxLength",
+       "cellSpacing",
+       "cellPadding",
+       "rowSpan",
+       "colSpan",
+       "useMap",
+       "frameBorder",
+       "contentEditable"
+], function() {
+       jQuery.propFix[ this.toLowerCase() ] = this;
+} );
+
+
+
+
+       // Strip and collapse whitespace according to HTML spec
+       // https://html.spec.whatwg.org/multipage/infrastructure.html#strip-and-collapse-whitespace
+       function stripAndCollapse( value ) {
+               var tokens = value.match( rnothtmlwhite ) || [];
+               return tokens.join( " " );
+       }
+
+
+function getClass( elem ) {
+       return elem.getAttribute && elem.getAttribute( "class" ) || "";
+}
+
+jQuery.fn.extend( {
+       addClass: function( value ) {
+               var classes, elem, cur, curValue, clazz, j, finalValue,
+                       i = 0;
+
+               if ( jQuery.isFunction( value ) ) {
+                       return this.each( function( j ) {
+                               jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
+                       } );
+               }
+
+               if ( typeof value === "string" && value ) {
+                       classes = value.match( rnothtmlwhite ) || [];
+
+                       while ( ( elem = this[ i++ ] ) ) {
+                               curValue = getClass( elem );
+                               cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
+
+                               if ( cur ) {
+                                       j = 0;
+                                       while ( ( clazz = classes[ j++ ] ) ) {
+                                               if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
+                                                       cur += clazz + " ";
+                                               }
+                                       }
+
+                                       // Only assign if different to avoid unneeded rendering.
+                                       finalValue = stripAndCollapse( cur );
+                                       if ( curValue !== finalValue ) {
+                                               elem.setAttribute( "class", finalValue );
+                                       }
+                               }
+                       }
+               }
+
+               return this;
+       },
+
+       removeClass: function( value ) {
+               var classes, elem, cur, curValue, clazz, j, finalValue,
+                       i = 0;
+
+               if ( jQuery.isFunction( value ) ) {
+                       return this.each( function( j ) {
+                               jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
+                       } );
+               }
+
+               if ( !arguments.length ) {
+                       return this.attr( "class", "" );
+               }
+
+               if ( typeof value === "string" && value ) {
+                       classes = value.match( rnothtmlwhite ) || [];
+
+                       while ( ( elem = this[ i++ ] ) ) {
+                               curValue = getClass( elem );
+
+                               // This expression is here for better compressibility (see addClass)
+                               cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
+
+                               if ( cur ) {
+                                       j = 0;
+                                       while ( ( clazz = classes[ j++ ] ) ) {
+
+                                               // Remove *all* instances
+                                               while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
+                                                       cur = cur.replace( " " + clazz + " ", " " );
+                                               }
+                                       }
+
+                                       // Only assign if different to avoid unneeded rendering.
+                                       finalValue = stripAndCollapse( cur );
+                                       if ( curValue !== finalValue ) {
+                                               elem.setAttribute( "class", finalValue );
+                                       }
+                               }
+                       }
+               }
+
+               return this;
+       },
+
+       toggleClass: function( value, stateVal ) {
+               var type = typeof value;
+
+               if ( typeof stateVal === "boolean" && type === "string" ) {
+                       return stateVal ? this.addClass( value ) : this.removeClass( value );
+               }
+
+               if ( jQuery.isFunction( value ) ) {
+                       return this.each( function( i ) {
+                               jQuery( this ).toggleClass(
+                                       value.call( this, i, getClass( this ), stateVal ),
+                                       stateVal
+                               );
+                       } );
+               }
+
+               return this.each( function() {
+                       var className, i, self, classNames;
+
+                       if ( type === "string" ) {
+
+                               // Toggle individual class names
+                               i = 0;
+                               self = jQuery( this );
+                               classNames = value.match( rnothtmlwhite ) || [];
+
+                               while ( ( className = classNames[ i++ ] ) ) {
+
+                                       // Check each className given, space separated list
+                                       if ( self.hasClass( className ) ) {
+                                               self.removeClass( className );
+                                       } else {
+                                               self.addClass( className );
+                                       }
+                               }
+
+                       // Toggle whole class name
+                       } else if ( value === undefined || type === "boolean" ) {
+                               className = getClass( this );
+                               if ( className ) {
+
+                                       // Store className if set
+                                       dataPriv.set( this, "__className__", className );
+                               }
+
+                               // If the element has a class name or if we're passed `false`,
+                               // then remove the whole classname (if there was one, the above saved it).
+                               // Otherwise bring back whatever was previously saved (if anything),
+                               // falling back to the empty string if nothing was stored.
+                               if ( this.setAttribute ) {
+                                       this.setAttribute( "class",
+                                               className || value === false ?
+                                               "" :
+                                               dataPriv.get( this, "__className__" ) || ""
+                                       );
+                               }
+                       }
+               } );
+       },
+
+       hasClass: function( selector ) {
+               var className, elem,
+                       i = 0;
+
+               className = " " + selector + " ";
+               while ( ( elem = this[ i++ ] ) ) {
+                       if ( elem.nodeType === 1 &&
+                               ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
+                                       return true;
+                       }
+               }
+
+               return false;
+       }
+} );
+
+
+
+
+var rreturn = /\r/g;
+
+jQuery.fn.extend( {
+       val: function( value ) {
+               var hooks, ret, isFunction,
+                       elem = this[ 0 ];
+
+               if ( !arguments.length ) {
+                       if ( elem ) {
+                               hooks = jQuery.valHooks[ elem.type ] ||
+                                       jQuery.valHooks[ elem.nodeName.toLowerCase() ];
+
+                               if ( hooks &&
+                                       "get" in hooks &&
+                                       ( ret = hooks.get( elem, "value" ) ) !== undefined
+                               ) {
+                                       return ret;
+                               }
+
+                               ret = elem.value;
+
+                               // Handle most common string cases
+                               if ( typeof ret === "string" ) {
+                                       return ret.replace( rreturn, "" );
+                               }
+
+                               // Handle cases where value is null/undef or number
+                               return ret == null ? "" : ret;
+                       }
+
+                       return;
+               }
+
+               isFunction = jQuery.isFunction( value );
+
+               return this.each( function( i ) {
+                       var val;
+
+                       if ( this.nodeType !== 1 ) {
+                               return;
+                       }
+
+                       if ( isFunction ) {
+                               val = value.call( this, i, jQuery( this ).val() );
+                       } else {
+                               val = value;
+                       }
+
+                       // Treat null/undefined as ""; convert numbers to string
+                       if ( val == null ) {
+                               val = "";
+
+                       } else if ( typeof val === "number" ) {
+                               val += "";
+
+                       } else if ( Array.isArray( val ) ) {
+                               val = jQuery.map( val, function( value ) {
+                                       return value == null ? "" : value + "";
+                               } );
+                       }
+
+                       hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
+
+                       // If set returns undefined, fall back to normal setting
+                       if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
+                               this.value = val;
+                       }
+               } );
+       }
+} );
+
+jQuery.extend( {
+       valHooks: {
+               option: {
+                       get: function( elem ) {
+
+                               var val = jQuery.find.attr( elem, "value" );
+                               return val != null ?
+                                       val :
+
+                                       // Support: IE <=10 - 11 only
+                                       // option.text throws exceptions (#14686, #14858)
+                                       // Strip and collapse whitespace
+                                       // https://html.spec.whatwg.org/#strip-and-collapse-whitespace
+                                       stripAndCollapse( jQuery.text( elem ) );
+                       }
+               },
+               select: {
+                       get: function( elem ) {
+                               var value, option, i,
+                                       options = elem.options,
+                                       index = elem.selectedIndex,
+                                       one = elem.type === "select-one",
+                                       values = one ? null : [],
+                                       max = one ? index + 1 : options.length;
+
+                               if ( index < 0 ) {
+                                       i = max;
+
+                               } else {
+                                       i = one ? index : 0;
+                               }
+
+                               // Loop through all the selected options
+                               for ( ; i < max; i++ ) {
+                                       option = options[ i ];
+
+                                       // Support: IE <=9 only
+                                       // IE8-9 doesn't update selected after form reset (#2551)
+                                       if ( ( option.selected || i === index ) &&
+
+                                                       // Don't return options that are disabled or in a disabled optgroup
+                                                       !option.disabled &&
+                                                       ( !option.parentNode.disabled ||
+                                                               !nodeName( option.parentNode, "optgroup" ) ) ) {
+
+                                               // Get the specific value for the option
+                                               value = jQuery( option ).val();
+
+                                               // We don't need an array for one selects
+                                               if ( one ) {
+                                                       return value;
+                                               }
+
+                                               // Multi-Selects return an array
+                                               values.push( value );
+                                       }
+                               }
+
+                               return values;
+                       },
+
+                       set: function( elem, value ) {
+                               var optionSet, option,
+                                       options = elem.options,
+                                       values = jQuery.makeArray( value ),
+                                       i = options.length;
+
+                               while ( i-- ) {
+                                       option = options[ i ];
+
+                                       /* eslint-disable no-cond-assign */
+
+                                       if ( option.selected =
+                                               jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
+                                       ) {
+                                               optionSet = true;
+                                       }
+
+                                       /* eslint-enable no-cond-assign */
+                               }
+
+                               // Force browsers to behave consistently when non-matching value is set
+                               if ( !optionSet ) {
+                                       elem.selectedIndex = -1;
+                               }
+                               return values;
+                       }
+               }
+       }
+} );
+
+// Radios and checkboxes getter/setter
+jQuery.each( [ "radio", "checkbox" ], function() {
+       jQuery.valHooks[ this ] = {
+               set: function( elem, value ) {
+                       if ( Array.isArray( value ) ) {
+                               return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
+                       }
+               }
+       };
+       if ( !support.checkOn ) {
+               jQuery.valHooks[ this ].get = function( elem ) {
+                       return elem.getAttribute( "value" ) === null ? "on" : elem.value;
+               };
+       }
+} );
+
+
+
+
+// Return jQuery for attributes-only inclusion
+
+
+var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
+
+jQuery.extend( jQuery.event, {
+
+       trigger: function( event, data, elem, onlyHandlers ) {
+
+               var i, cur, tmp, bubbleType, ontype, handle, special,
+                       eventPath = [ elem || document ],
+                       type = hasOwn.call( event, "type" ) ? event.type : event,
+                       namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
+
+               cur = tmp = elem = elem || document;
+
+               // Don't do events on text and comment nodes
+               if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
+                       return;
+               }
+
+               // focus/blur morphs to focusin/out; ensure we're not firing them right now
+               if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
+                       return;
+               }
+
+               if ( type.indexOf( "." ) > -1 ) {
+
+                       // Namespaced trigger; create a regexp to match event type in handle()
+                       namespaces = type.split( "." );
+                       type = namespaces.shift();
+                       namespaces.sort();
+               }
+               ontype = type.indexOf( ":" ) < 0 && "on" + type;
+
+               // Caller can pass in a jQuery.Event object, Object, or just an event type string
+               event = event[ jQuery.expando ] ?
+                       event :
+                       new jQuery.Event( type, typeof event === "object" && event );
+
+               // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
+               event.isTrigger = onlyHandlers ? 2 : 3;
+               event.namespace = namespaces.join( "." );
+               event.rnamespace = event.namespace ?
+                       new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
+                       null;
+
+               // Clean up the event in case it is being reused
+               event.result = undefined;
+               if ( !event.target ) {
+                       event.target = elem;
+               }
+
+               // Clone any incoming data and prepend the event, creating the handler arg list
+               data = data == null ?
+                       [ event ] :
+                       jQuery.makeArray( data, [ event ] );
+
+               // Allow special events to draw outside the lines
+               special = jQuery.event.special[ type ] || {};
+               if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
+                       return;
+               }
+
+               // Determine event propagation path in advance, per W3C events spec (#9951)
+               // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+               if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+
+                       bubbleType = special.delegateType || type;
+                       if ( !rfocusMorph.test( bubbleType + type ) ) {
+                               cur = cur.parentNode;
+                       }
+                       for ( ; cur; cur = cur.parentNode ) {
+                               eventPath.push( cur );
+                               tmp = cur;
+                       }
+
+                       // Only add window if we got to document (e.g., not plain obj or detached DOM)
+                       if ( tmp === ( elem.ownerDocument || document ) ) {
+                               eventPath.push( tmp.defaultView || tmp.parentWindow || window );
+                       }
+               }
+
+               // Fire handlers on the event path
+               i = 0;
+               while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
+
+                       event.type = i > 1 ?
+                               bubbleType :
+                               special.bindType || type;
+
+                       // jQuery handler
+                       handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
+                               dataPriv.get( cur, "handle" );
+                       if ( handle ) {
+                               handle.apply( cur, data );
+                       }
+
+                       // Native handler
+                       handle = ontype && cur[ ontype ];
+                       if ( handle && handle.apply && acceptData( cur ) ) {
+                               event.result = handle.apply( cur, data );
+                               if ( event.result === false ) {
+                                       event.preventDefault();
+                               }
+                       }
+               }
+               event.type = type;
+
+               // If nobody prevented the default action, do it now
+               if ( !onlyHandlers && !event.isDefaultPrevented() ) {
+
+                       if ( ( !special._default ||
+                               special._default.apply( eventPath.pop(), data ) === false ) &&
+                               acceptData( elem ) ) {
+
+                               // Call a native DOM method on the target with the same name as the event.
+                               // Don't do default actions on window, that's where global variables be (#6170)
+                               if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
+
+                                       // Don't re-trigger an onFOO event when we call its FOO() method
+                                       tmp = elem[ ontype ];
+
+                                       if ( tmp ) {
+                                               elem[ ontype ] = null;
+                                       }
+
+                                       // Prevent re-triggering of the same event, since we already bubbled it above
+                                       jQuery.event.triggered = type;
+                                       elem[ type ]();
+                                       jQuery.event.triggered = undefined;
+
+                                       if ( tmp ) {
+                                               elem[ ontype ] = tmp;
+                                       }
+                               }
+                       }
+               }
+
+               return event.result;
+       },
+
+       // Piggyback on a donor event to simulate a different one
+       // Used only for `focus(in | out)` events
+       simulate: function( type, elem, event ) {
+               var e = jQuery.extend(
+                       new jQuery.Event(),
+                       event,
+                       {
+                               type: type,
+                               isSimulated: true
+                       }
+               );
+
+               jQuery.event.trigger( e, null, elem );
+       }
+
+} );
+
+jQuery.fn.extend( {
+
+       trigger: function( type, data ) {
+               return this.each( function() {
+                       jQuery.event.trigger( type, data, this );
+               } );
+       },
+       triggerHandler: function( type, data ) {
+               var elem = this[ 0 ];
+               if ( elem ) {
+                       return jQuery.event.trigger( type, data, elem, true );
+               }
+       }
+} );
+
+
+jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
+       "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+       "change select submit keydown keypress keyup contextmenu" ).split( " " ),
+       function( i, name ) {
+
+       // Handle event binding
+       jQuery.fn[ name ] = function( data, fn ) {
+               return arguments.length > 0 ?
+                       this.on( name, null, data, fn ) :
+                       this.trigger( name );
+       };
+} );
+
+jQuery.fn.extend( {
+       hover: function( fnOver, fnOut ) {
+               return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+       }
+} );
+
+
+
+
+support.focusin = "onfocusin" in window;
+
+
+// Support: Firefox <=44
+// Firefox doesn't have focus(in | out) events
+// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
+//
+// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
+// focus(in | out) events fire after focus & blur events,
+// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
+// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
+if ( !support.focusin ) {
+       jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
+
+               // Attach a single capturing handler on the document while someone wants focusin/focusout
+               var handler = function( event ) {
+                       jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
+               };
+
+               jQuery.event.special[ fix ] = {
+                       setup: function() {
+                               var doc = this.ownerDocument || this,
+                                       attaches = dataPriv.access( doc, fix );
+
+                               if ( !attaches ) {
+                                       doc.addEventListener( orig, handler, true );
+                               }
+                               dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
+                       },
+                       teardown: function() {
+                               var doc = this.ownerDocument || this,
+                                       attaches = dataPriv.access( doc, fix ) - 1;
+
+                               if ( !attaches ) {
+                                       doc.removeEventListener( orig, handler, true );
+                                       dataPriv.remove( doc, fix );
+
+                               } else {
+                                       dataPriv.access( doc, fix, attaches );
+                               }
+                       }
+               };
+       } );
+}
+var location = window.location;
+
+var nonce = jQuery.now();
+
+var rquery = ( /\?/ );
+
+
+
+// Cross-browser xml parsing
+jQuery.parseXML = function( data ) {
+       var xml;
+       if ( !data || typeof data !== "string" ) {
+               return null;
+       }
+
+       // Support: IE 9 - 11 only
+       // IE throws on parseFromString with invalid input.
+       try {
+               xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
+       } catch ( e ) {
+               xml = undefined;
+       }
+
+       if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
+               jQuery.error( "Invalid XML: " + data );
+       }
+       return xml;
+};
+
+
+var
+       rbracket = /\[\]$/,
+       rCRLF = /\r?\n/g,
+       rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
+       rsubmittable = /^(?:input|select|textarea|keygen)/i;
+
+function buildParams( prefix, obj, traditional, add ) {
+       var name;
+
+       if ( Array.isArray( obj ) ) {
+
+               // Serialize array item.
+               jQuery.each( obj, function( i, v ) {
+                       if ( traditional || rbracket.test( prefix ) ) {
+
+                               // Treat each array item as a scalar.
+                               add( prefix, v );
+
+                       } else {
+
+                               // Item is non-scalar (array or object), encode its numeric index.
+                               buildParams(
+                                       prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
+                                       v,
+                                       traditional,
+                                       add
+                               );
+                       }
+               } );
+
+       } else if ( !traditional && jQuery.type( obj ) === "object" ) {
+
+               // Serialize object item.
+               for ( name in obj ) {
+                       buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+               }
+
+       } else {
+
+               // Serialize scalar item.
+               add( prefix, obj );
+       }
+}
+
+// Serialize an array of form elements or a set of
+// key/values into a query string
+jQuery.param = function( a, traditional ) {
+       var prefix,
+               s = [],
+               add = function( key, valueOrFunction ) {
+
+                       // If value is a function, invoke it and use its return value
+                       var value = jQuery.isFunction( valueOrFunction ) ?
+                               valueOrFunction() :
+                               valueOrFunction;
+
+                       s[ s.length ] = encodeURIComponent( key ) + "=" +
+                               encodeURIComponent( value == null ? "" : value );
+               };
+
+       // If an array was passed in, assume that it is an array of form elements.
+       if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
+
+               // Serialize the form elements
+               jQuery.each( a, function() {
+                       add( this.name, this.value );
+               } );
+
+       } else {
+
+               // If traditional, encode the "old" way (the way 1.3.2 or older
+               // did it), otherwise encode params recursively.
+               for ( prefix in a ) {
+                       buildParams( prefix, a[ prefix ], traditional, add );
+               }
+       }
+
+       // Return the resulting serialization
+       return s.join( "&" );
+};
+
+jQuery.fn.extend( {
+       serialize: function() {
+               return jQuery.param( this.serializeArray() );
+       },
+       serializeArray: function() {
+               return this.map( function() {
+
+                       // Can add propHook for "elements" to filter or add form elements
+                       var elements = jQuery.prop( this, "elements" );
+                       return elements ? jQuery.makeArray( elements ) : this;
+               } )
+               .filter( function() {
+                       var type = this.type;
+
+                       // Use .is( ":disabled" ) so that fieldset[disabled] works
+                       return this.name && !jQuery( this ).is( ":disabled" ) &&
+                               rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
+                               ( this.checked || !rcheckableType.test( type ) );
+               } )
+               .map( function( i, elem ) {
+                       var val = jQuery( this ).val();
+
+                       if ( val == null ) {
+                               return null;
+                       }
+
+                       if ( Array.isArray( val ) ) {
+                               return jQuery.map( val, function( val ) {
+                                       return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+                               } );
+                       }
+
+                       return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+               } ).get();
+       }
+} );
+
+
+var
+       r20 = /%20/g,
+       rhash = /#.*$/,
+       rantiCache = /([?&])_=[^&]*/,
+       rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
+
+       // #7653, #8125, #8152: local protocol detection
+       rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
+       rnoContent = /^(?:GET|HEAD)$/,
+       rprotocol = /^\/\//,
+
+       /* Prefilters
+        * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
+        * 2) These are called:
+        *    - BEFORE asking for a transport
+        *    - AFTER param serialization (s.data is a string if s.processData is true)
+        * 3) key is the dataType
+        * 4) the catchall symbol "*" can be used
+        * 5) execution will start with transport dataType and THEN continue down to "*" if needed
+        */
+       prefilters = {},
+
+       /* Transports bindings
+        * 1) key is the dataType
+        * 2) the catchall symbol "*" can be used
+        * 3) selection will start with transport dataType and THEN go to "*" if needed
+        */
+       transports = {},
+
+       // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+       allTypes = "*/".concat( "*" ),
+
+       // Anchor tag for parsing the document origin
+       originAnchor = document.createElement( "a" );
+       originAnchor.href = location.href;
+
+// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
+function addToPrefiltersOrTransports( structure ) {
+
+       // dataTypeExpression is optional and defaults to "*"
+       return function( dataTypeExpression, func ) {
+
+               if ( typeof dataTypeExpression !== "string" ) {
+                       func = dataTypeExpression;
+                       dataTypeExpression = "*";
+               }
+
+               var dataType,
+                       i = 0,
+                       dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];
+
+               if ( jQuery.isFunction( func ) ) {
+
+                       // For each dataType in the dataTypeExpression
+                       while ( ( dataType = dataTypes[ i++ ] ) ) {
+
+                               // Prepend if requested
+                               if ( dataType[ 0 ] === "+" ) {
+                                       dataType = dataType.slice( 1 ) || "*";
+                                       ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );
+
+                               // Otherwise append
+                               } else {
+                                       ( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
+                               }
+                       }
+               }
+       };
+}
+
+// Base inspection function for prefilters and transports
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {
+
+       var inspected = {},
+               seekingTransport = ( structure === transports );
+
+       function inspect( dataType ) {
+               var selected;
+               inspected[ dataType ] = true;
+               jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
+                       var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
+                       if ( typeof dataTypeOrTransport === "string" &&
+                               !seekingTransport && !inspected[ dataTypeOrTransport ] ) {
+
+                               options.dataTypes.unshift( dataTypeOrTransport );
+                               inspect( dataTypeOrTransport );
+                               return false;
+                       } else if ( seekingTransport ) {
+                               return !( selected = dataTypeOrTransport );
+                       }
+               } );
+               return selected;
+       }
+
+       return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
+}
+
+// A special extend for ajax options
+// that takes "flat" options (not to be deep extended)
+// Fixes #9887
+function ajaxExtend( target, src ) {
+       var key, deep,
+               flatOptions = jQuery.ajaxSettings.flatOptions || {};
+
+       for ( key in src ) {
+               if ( src[ key ] !== undefined ) {
+                       ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
+               }
+       }
+       if ( deep ) {
+               jQuery.extend( true, target, deep );
+       }
+
+       return target;
+}
+
+/* Handles responses to an ajax request:
+ * - finds the right dataType (mediates between content-type and expected dataType)
+ * - returns the corresponding response
+ */
+function ajaxHandleResponses( s, jqXHR, responses ) {
+
+       var ct, type, finalDataType, firstDataType,
+               contents = s.contents,
+               dataTypes = s.dataTypes;
+
+       // Remove auto dataType and get content-type in the process
+       while ( dataTypes[ 0 ] === "*" ) {
+               dataTypes.shift();
+               if ( ct === undefined ) {
+                       ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
+               }
+       }
+
+       // Check if we're dealing with a known content-type
+       if ( ct ) {
+               for ( type in contents ) {
+                       if ( contents[ type ] && contents[ type ].test( ct ) ) {
+                               dataTypes.unshift( type );
+                               break;
+                       }
+               }
+       }
+
+       // Check to see if we have a response for the expected dataType
+       if ( dataTypes[ 0 ] in responses ) {
+               finalDataType = dataTypes[ 0 ];
+       } else {
+
+               // Try convertible dataTypes
+               for ( type in responses ) {
+                       if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
+                               finalDataType = type;
+                               break;
+                       }
+                       if ( !firstDataType ) {
+                               firstDataType = type;
+                       }
+               }
+
+               // Or just use first one
+               finalDataType = finalDataType || firstDataType;
+       }
+
+       // If we found a dataType
+       // We add the dataType to the list if needed
+       // and return the corresponding response
+       if ( finalDataType ) {
+               if ( finalDataType !== dataTypes[ 0 ] ) {
+                       dataTypes.unshift( finalDataType );
+               }
+               return responses[ finalDataType ];
+       }
+}
+
+/* Chain conversions given the request and the original response
+ * Also sets the responseXXX fields on the jqXHR instance
+ */
+function ajaxConvert( s, response, jqXHR, isSuccess ) {
+       var conv2, current, conv, tmp, prev,
+               converters = {},
+
+               // Work with a copy of dataTypes in case we need to modify it for conversion
+               dataTypes = s.dataTypes.slice();
+
+       // Create converters map with lowercased keys
+       if ( dataTypes[ 1 ] ) {
+               for ( conv in s.converters ) {
+                       converters[ conv.toLowerCase() ] = s.converters[ conv ];
+               }
+       }
+
+       current = dataTypes.shift();
+
+       // Convert to each sequential dataType
+       while ( current ) {
+
+               if ( s.responseFields[ current ] ) {
+                       jqXHR[ s.responseFields[ current ] ] = response;
+               }
+
+               // Apply the dataFilter if provided
+               if ( !prev && isSuccess && s.dataFilter ) {
+                       response = s.dataFilter( response, s.dataType );
+               }
+
+               prev = current;
+               current = dataTypes.shift();
+
+               if ( current ) {
+
+                       // There's only work to do if current dataType is non-auto
+                       if ( current === "*" ) {
+
+                               current = prev;
+
+                       // Convert response if prev dataType is non-auto and differs from current
+                       } else if ( prev !== "*" && prev !== current ) {
+
+                               // Seek a direct converter
+                               conv = converters[ prev + " " + current ] || converters[ "* " + current ];
+
+                               // If none found, seek a pair
+                               if ( !conv ) {
+                                       for ( conv2 in converters ) {
+
+                                               // If conv2 outputs current
+                                               tmp = conv2.split( " " );
+                                               if ( tmp[ 1 ] === current ) {
+
+                                                       // If prev can be converted to accepted input
+                                                       conv = converters[ prev + " " + tmp[ 0 ] ] ||
+                                                               converters[ "* " + tmp[ 0 ] ];
+                                                       if ( conv ) {
+
+                                                               // Condense equivalence converters
+                                                               if ( conv === true ) {
+                                                                       conv = converters[ conv2 ];
+
+                                                               // Otherwise, insert the intermediate dataType
+                                                               } else if ( converters[ conv2 ] !== true ) {
+                                                                       current = tmp[ 0 ];
+                                                                       dataTypes.unshift( tmp[ 1 ] );
+                                                               }
+                                                               break;
+                                                       }
+                                               }
+                                       }
+                               }
+
+                               // Apply converter (if not an equivalence)
+                               if ( conv !== true ) {
+
+                                       // Unless errors are allowed to bubble, catch and return them
+                                       if ( conv && s.throws ) {
+                                               response = conv( response );
+                                       } else {
+                                               try {
+                                                       response = conv( response );
+                                               } catch ( e ) {
+                                                       return {
+                                                               state: "parsererror",
+                                                               error: conv ? e : "No conversion from " + prev + " to " + current
+                                                       };
+                                               }
+                                       }
+                               }
+                       }
+               }
+       }
+
+       return { state: "success", data: response };
+}
+
+jQuery.extend( {
+
+       // Counter for holding the number of active queries
+       active: 0,
+
+       // Last-Modified header cache for next request
+       lastModified: {},
+       etag: {},
+
+       ajaxSettings: {
+               url: location.href,
+               type: "GET",
+               isLocal: rlocalProtocol.test( location.protocol ),
+               global: true,
+               processData: true,
+               async: true,
+               contentType: "application/x-www-form-urlencoded; charset=UTF-8",
+
+               /*
+               timeout: 0,
+               data: null,
+               dataType: null,
+               username: null,
+               password: null,
+               cache: null,
+               throws: false,
+               traditional: false,
+               headers: {},
+               */
+
+               accepts: {
+                       "*": allTypes,
+                       text: "text/plain",
+                       html: "text/html",
+                       xml: "application/xml, text/xml",
+                       json: "application/json, text/javascript"
+               },
+
+               contents: {
+                       xml: /\bxml\b/,
+                       html: /\bhtml/,
+                       json: /\bjson\b/
+               },
+
+               responseFields: {
+                       xml: "responseXML",
+                       text: "responseText",
+                       json: "responseJSON"
+               },
+
+               // Data converters
+               // Keys separate source (or catchall "*") and destination types with a single space
+               converters: {
+
+                       // Convert anything to text
+                       "* text": String,
+
+                       // Text to html (true = no transformation)
+                       "text html": true,
+
+                       // Evaluate text as a json expression
+                       "text json": JSON.parse,
+
+                       // Parse text as xml
+                       "text xml": jQuery.parseXML
+               },
+
+               // For options that shouldn't be deep extended:
+               // you can add your own custom options here if
+               // and when you create one that shouldn't be
+               // deep extended (see ajaxExtend)
+               flatOptions: {
+                       url: true,
+                       context: true
+               }
+       },
+
+       // Creates a full fledged settings object into target
+       // with both ajaxSettings and settings fields.
+       // If target is omitted, writes into ajaxSettings.
+       ajaxSetup: function( target, settings ) {
+               return settings ?
+
+                       // Building a settings object
+                       ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :
+
+                       // Extending ajaxSettings
+                       ajaxExtend( jQuery.ajaxSettings, target );
+       },
+
+       ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
+       ajaxTransport: addToPrefiltersOrTransports( transports ),
+
+       // Main method
+       ajax: function( url, options ) {
+
+               // If url is an object, simulate pre-1.5 signature
+               if ( typeof url === "object" ) {
+                       options = url;
+                       url = undefined;
+               }
+
+               // Force options to be an object
+               options = options || {};
+
+               var transport,
+
+                       // URL without anti-cache param
+                       cacheURL,
+
+                       // Response headers
+                       responseHeadersString,
+                       responseHeaders,
+
+                       // timeout handle
+                       timeoutTimer,
+
+                       // Url cleanup var
+                       urlAnchor,
+
+                       // Request state (becomes false upon send and true upon completion)
+                       completed,
+
+                       // To know if global events are to be dispatched
+                       fireGlobals,
+
+                       // Loop variable
+                       i,
+
+                       // uncached part of the url
+                       uncached,
+
+                       // Create the final options object
+                       s = jQuery.ajaxSetup( {}, options ),
+
+                       // Callbacks context
+                       callbackContext = s.context || s,
+
+                       // Context for global events is callbackContext if it is a DOM node or jQuery collection
+                       globalEventContext = s.context &&
+                               ( callbackContext.nodeType || callbackContext.jquery ) ?
+                                       jQuery( callbackContext ) :
+                                       jQuery.event,
+
+                       // Deferreds
+                       deferred = jQuery.Deferred(),
+                       completeDeferred = jQuery.Callbacks( "once memory" ),
+
+                       // Status-dependent callbacks
+                       statusCode = s.statusCode || {},
+
+                       // Headers (they are sent all at once)
+                       requestHeaders = {},
+                       requestHeadersNames = {},
+
+                       // Default abort message
+                       strAbort = "canceled",
+
+                       // Fake xhr
+                       jqXHR = {
+                               readyState: 0,
+
+                               // Builds headers hashtable if needed
+                               getResponseHeader: function( key ) {
+                                       var match;
+                                       if ( completed ) {
+                                               if ( !responseHeaders ) {
+                                                       responseHeaders = {};
+                                                       while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
+                                                               responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
+                                                       }
+                                               }
+                                               match = responseHeaders[ key.toLowerCase() ];
+                                       }
+                                       return match == null ? null : match;
+                               },
+
+                               // Raw string
+                               getAllResponseHeaders: function() {
+                                       return completed ? responseHeadersString : null;
+                               },
+
+                               // Caches the header
+                               setRequestHeader: function( name, value ) {
+                                       if ( completed == null ) {
+                                               name = requestHeadersNames[ name.toLowerCase() ] =
+                                                       requestHeadersNames[ name.toLowerCase() ] || name;
+                                               requestHeaders[ name ] = value;
+                                       }
+                                       return this;
+                               },
+
+                               // Overrides response content-type header
+                               overrideMimeType: function( type ) {
+                                       if ( completed == null ) {
+                                               s.mimeType = type;
+                                       }
+                                       return this;
+                               },
+
+                               // Status-dependent callbacks
+                               statusCode: function( map ) {
+                                       var code;
+                                       if ( map ) {
+                                               if ( completed ) {
+
+                                                       // Execute the appropriate callbacks
+                                                       jqXHR.always( map[ jqXHR.status ] );
+                                               } else {
+
+                                                       // Lazy-add the new callbacks in a way that preserves old ones
+                                                       for ( code in map ) {
+                                                               statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
+                                                       }
+                                               }
+                                       }
+                                       return this;
+                               },
+
+                               // Cancel the request
+                               abort: function( statusText ) {
+                                       var finalText = statusText || strAbort;
+                                       if ( transport ) {
+                                               transport.abort( finalText );
+                                       }
+                                       done( 0, finalText );
+                                       return this;
+                               }
+                       };
+
+               // Attach deferreds
+               deferred.promise( jqXHR );
+
+               // Add protocol if not provided (prefilters might expect it)
+               // Handle falsy url in the settings object (#10093: consistency with old signature)
+               // We also use the url parameter if available
+               s.url = ( ( url || s.url || location.href ) + "" )
+                       .replace( rprotocol, location.protocol + "//" );
+
+               // Alias method option to type as per ticket #12004
+               s.type = options.method || options.type || s.method || s.type;
+
+               // Extract dataTypes list
+               s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];
+
+               // A cross-domain request is in order when the origin doesn't match the current origin.
+               if ( s.crossDomain == null ) {
+                       urlAnchor = document.createElement( "a" );
+
+                       // Support: IE <=8 - 11, Edge 12 - 13
+                       // IE throws exception on accessing the href property if url is malformed,
+                       // e.g. http://example.com:80x/
+                       try {
+                               urlAnchor.href = s.url;
+
+                               // Support: IE <=8 - 11 only
+                               // Anchor's host property isn't correctly set when s.url is relative
+                               urlAnchor.href = urlAnchor.href;
+                               s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
+                                       urlAnchor.protocol + "//" + urlAnchor.host;
+                       } catch ( e ) {
+
+                               // If there is an error parsing the URL, assume it is crossDomain,
+                               // it can be rejected by the transport if it is invalid
+                               s.crossDomain = true;
+                       }
+               }
+
+               // Convert data if not already a string
+               if ( s.data && s.processData && typeof s.data !== "string" ) {
+                       s.data = jQuery.param( s.data, s.traditional );
+               }
+
+               // Apply prefilters
+               inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
+
+               // If request was aborted inside a prefilter, stop there
+               if ( completed ) {
+                       return jqXHR;
+               }
+
+               // We can fire global events as of now if asked to
+               // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
+               fireGlobals = jQuery.event && s.global;
+
+               // Watch for a new set of requests
+               if ( fireGlobals && jQuery.active++ === 0 ) {
+                       jQuery.event.trigger( "ajaxStart" );
+               }
+
+               // Uppercase the type
+               s.type = s.type.toUpperCase();
+
+               // Determine if request has content
+               s.hasContent = !rnoContent.test( s.type );
+
+               // Save the URL in case we're toying with the If-Modified-Since
+               // and/or If-None-Match header later on
+               // Remove hash to simplify url manipulation
+               cacheURL = s.url.replace( rhash, "" );
+
+               // More options handling for requests with no content
+               if ( !s.hasContent ) {
+
+                       // Remember the hash so we can put it back
+                       uncached = s.url.slice( cacheURL.length );
+
+                       // If data is available, append data to url
+                       if ( s.data ) {
+                               cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
+
+                               // #9682: remove data so that it's not used in an eventual retry
+                               delete s.data;
+                       }
+
+                       // Add or update anti-cache param if needed
+                       if ( s.cache === false ) {
+                               cacheURL = cacheURL.replace( rantiCache, "$1" );
+                               uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
+                       }
+
+                       // Put hash and anti-cache on the URL that will be requested (gh-1732)
+                       s.url = cacheURL + uncached;
+
+               // Change '%20' to '+' if this is encoded form body content (gh-2658)
+               } else if ( s.data && s.processData &&
+                       ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
+                       s.data = s.data.replace( r20, "+" );
+               }
+
+               // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+               if ( s.ifModified ) {
+                       if ( jQuery.lastModified[ cacheURL ] ) {
+                               jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
+                       }
+                       if ( jQuery.etag[ cacheURL ] ) {
+                               jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
+                       }
+               }
+
+               // Set the correct header, if data is being sent
+               if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
+                       jqXHR.setRequestHeader( "Content-Type", s.contentType );
+               }
+
+               // Set the Accepts header for the server, depending on the dataType
+               jqXHR.setRequestHeader(
+                       "Accept",
+                       s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
+                               s.accepts[ s.dataTypes[ 0 ] ] +
+                                       ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
+                               s.accepts[ "*" ]
+               );
+
+               // Check for headers option
+               for ( i in s.headers ) {
+                       jqXHR.setRequestHeader( i, s.headers[ i ] );
+               }
+
+               // Allow custom headers/mimetypes and early abort
+               if ( s.beforeSend &&
+                       ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {
+
+                       // Abort if not done already and return
+                       return jqXHR.abort();
+               }
+
+               // Aborting is no longer a cancellation
+               strAbort = "abort";
+
+               // Install callbacks on deferreds
+               completeDeferred.add( s.complete );
+               jqXHR.done( s.success );
+               jqXHR.fail( s.error );
+
+               // Get transport
+               transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
+
+               // If no transport, we auto-abort
+               if ( !transport ) {
+                       done( -1, "No Transport" );
+               } else {
+                       jqXHR.readyState = 1;
+
+                       // Send global event
+                       if ( fireGlobals ) {
+                               globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
+                       }
+
+                       // If request was aborted inside ajaxSend, stop there
+                       if ( completed ) {
+                               return jqXHR;
+                       }
+
+                       // Timeout
+                       if ( s.async && s.timeout > 0 ) {
+                               timeoutTimer = window.setTimeout( function() {
+                                       jqXHR.abort( "timeout" );
+                               }, s.timeout );
+                       }
+
+                       try {
+                               completed = false;
+                               transport.send( requestHeaders, done );
+                       } catch ( e ) {
+
+                               // Rethrow post-completion exceptions
+                               if ( completed ) {
+                                       throw e;
+                               }
+
+                               // Propagate others as results
+                               done( -1, e );
+                       }
+               }
+
+               // Callback for when everything is done
+               function done( status, nativeStatusText, responses, headers ) {
+                       var isSuccess, success, error, response, modified,
+                               statusText = nativeStatusText;
+
+                       // Ignore repeat invocations
+                       if ( completed ) {
+                               return;
+                       }
+
+                       completed = true;
+
+                       // Clear timeout if it exists
+                       if ( timeoutTimer ) {
+                               window.clearTimeout( timeoutTimer );
+                       }
+
+                       // Dereference transport for early garbage collection
+                       // (no matter how long the jqXHR object will be used)
+                       transport = undefined;
+
+                       // Cache response headers
+                       responseHeadersString = headers || "";
+
+                       // Set readyState
+                       jqXHR.readyState = status > 0 ? 4 : 0;
+
+                       // Determine if successful
+                       isSuccess = status >= 200 && status < 300 || status === 304;
+
+                       // Get response data
+                       if ( responses ) {
+                               response = ajaxHandleResponses( s, jqXHR, responses );
+                       }
+
+                       // Convert no matter what (that way responseXXX fields are always set)
+                       response = ajaxConvert( s, response, jqXHR, isSuccess );
+
+                       // If successful, handle type chaining
+                       if ( isSuccess ) {
+
+                               // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+                               if ( s.ifModified ) {
+                                       modified = jqXHR.getResponseHeader( "Last-Modified" );
+                                       if ( modified ) {
+                                               jQuery.lastModified[ cacheURL ] = modified;
+                                       }
+                                       modified = jqXHR.getResponseHeader( "etag" );
+                                       if ( modified ) {
+                                               jQuery.etag[ cacheURL ] = modified;
+                                       }
+                               }
+
+                               // if no content
+                               if ( status === 204 || s.type === "HEAD" ) {
+                                       statusText = "nocontent";
+
+                               // if not modified
+                               } else if ( status === 304 ) {
+                                       statusText = "notmodified";
+
+                               // If we have data, let's convert it
+                               } else {
+                                       statusText = response.state;
+                                       success = response.data;
+                                       error = response.error;
+                                       isSuccess = !error;
+                               }
+                       } else {
+
+                               // Extract error from statusText and normalize for non-aborts
+                               error = statusText;
+                               if ( status || !statusText ) {
+                                       statusText = "error";
+                                       if ( status < 0 ) {
+                                               status = 0;
+                                       }
+                               }
+                       }
+
+                       // Set data for the fake xhr object
+                       jqXHR.status = status;
+                       jqXHR.statusText = ( nativeStatusText || statusText ) + "";
+
+                       // Success/Error
+                       if ( isSuccess ) {
+                               deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
+                       } else {
+                               deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
+                       }
+
+                       // Status-dependent callbacks
+                       jqXHR.statusCode( statusCode );
+                       statusCode = undefined;
+
+                       if ( fireGlobals ) {
+                               globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
+                                       [ jqXHR, s, isSuccess ? success : error ] );
+                       }
+
+                       // Complete
+                       completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
+
+                       if ( fireGlobals ) {
+                               globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
+
+                               // Handle the global AJAX counter
+                               if ( !( --jQuery.active ) ) {
+                                       jQuery.event.trigger( "ajaxStop" );
+                               }
+                       }
+               }
+
+               return jqXHR;
+       },
+
+       getJSON: function( url, data, callback ) {
+               return jQuery.get( url, data, callback, "json" );
+       },
+
+       getScript: function( url, callback ) {
+               return jQuery.get( url, undefined, callback, "script" );
+       }
+} );
+
+jQuery.each( [ "get", "post" ], function( i, method ) {
+       jQuery[ method ] = function( url, data, callback, type ) {
+
+               // Shift arguments if data argument was omitted
+               if ( jQuery.isFunction( data ) ) {
+                       type = type || callback;
+                       callback = data;
+                       data = undefined;
+               }
+
+               // The url can be an options object (which then must have .url)
+               return jQuery.ajax( jQuery.extend( {
+                       url: url,
+                       type: method,
+                       dataType: type,
+                       data: data,
+                       success: callback
+               }, jQuery.isPlainObject( url ) && url ) );
+       };
+} );
+
+
+jQuery._evalUrl = function( url ) {
+       return jQuery.ajax( {
+               url: url,
+
+               // Make this explicit, since user can override this through ajaxSetup (#11264)
+               type: "GET",
+               dataType: "script",
+               cache: true,
+               async: false,
+               global: false,
+               "throws": true
+       } );
+};
+
+
+jQuery.fn.extend( {
+       wrapAll: function( html ) {
+               var wrap;
+
+               if ( this[ 0 ] ) {
+                       if ( jQuery.isFunction( html ) ) {
+                               html = html.call( this[ 0 ] );
+                       }
+
+                       // The elements to wrap the target around
+                       wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
+
+                       if ( this[ 0 ].parentNode ) {
+                               wrap.insertBefore( this[ 0 ] );
+                       }
+
+                       wrap.map( function() {
+                               var elem = this;
+
+                               while ( elem.firstElementChild ) {
+                                       elem = elem.firstElementChild;
+                               }
+
+                               return elem;
+                       } ).append( this );
+               }
+
+               return this;
+       },
+
+       wrapInner: function( html ) {
+               if ( jQuery.isFunction( html ) ) {
+                       return this.each( function( i ) {
+                               jQuery( this ).wrapInner( html.call( this, i ) );
+                       } );
+               }
+
+               return this.each( function() {
+                       var self = jQuery( this ),
+                               contents = self.contents();
+
+                       if ( contents.length ) {
+                               contents.wrapAll( html );
+
+                       } else {
+                               self.append( html );
+                       }
+               } );
+       },
+
+       wrap: function( html ) {
+               var isFunction = jQuery.isFunction( html );
+
+               return this.each( function( i ) {
+                       jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
+               } );
+       },
+
+       unwrap: function( selector ) {
+               this.parent( selector ).not( "body" ).each( function() {
+                       jQuery( this ).replaceWith( this.childNodes );
+               } );
+               return this;
+       }
+} );
+
+
+jQuery.expr.pseudos.hidden = function( elem ) {
+       return !jQuery.expr.pseudos.visible( elem );
+};
+jQuery.expr.pseudos.visible = function( elem ) {
+       return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
+};
+
+
+
+
+jQuery.ajaxSettings.xhr = function() {
+       try {
+               return new window.XMLHttpRequest();
+       } catch ( e ) {}
+};
+
+var xhrSuccessStatus = {
+
+               // File protocol always yields status code 0, assume 200
+               0: 200,
+
+               // Support: IE <=9 only
+               // #1450: sometimes IE returns 1223 when it should be 204
+               1223: 204
+       },
+       xhrSupported = jQuery.ajaxSettings.xhr();
+
+support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
+support.ajax = xhrSupported = !!xhrSupported;
+
+jQuery.ajaxTransport( function( options ) {
+       var callback, errorCallback;
+
+       // Cross domain only allowed if supported through XMLHttpRequest
+       if ( support.cors || xhrSupported && !options.crossDomain ) {
+               return {
+                       send: function( headers, complete ) {
+                               var i,
+                                       xhr = options.xhr();
+
+                               xhr.open(
+                                       options.type,
+                                       options.url,
+                                       options.async,
+                                       options.username,
+                                       options.password
+                               );
+
+                               // Apply custom fields if provided
+                               if ( options.xhrFields ) {
+                                       for ( i in options.xhrFields ) {
+                                               xhr[ i ] = options.xhrFields[ i ];
+                                       }
+                               }
+
+                               // Override mime type if needed
+                               if ( options.mimeType && xhr.overrideMimeType ) {
+                                       xhr.overrideMimeType( options.mimeType );
+                               }
+
+                               // X-Requested-With header
+                               // For cross-domain requests, seeing as conditions for a preflight are
+                               // akin to a jigsaw puzzle, we simply never set it to be sure.
+                               // (it can always be set on a per-request basis or even using ajaxSetup)
+                               // For same-domain requests, won't change header if already provided.
+                               if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
+                                       headers[ "X-Requested-With" ] = "XMLHttpRequest";
+                               }
+
+                               // Set headers
+                               for ( i in headers ) {
+                                       xhr.setRequestHeader( i, headers[ i ] );
+                               }
+
+                               // Callback
+                               callback = function( type ) {
+                                       return function() {
+                                               if ( callback ) {
+                                                       callback = errorCallback = xhr.onload =
+                                                               xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
+
+                                                       if ( type === "abort" ) {
+                                                               xhr.abort();
+                                                       } else if ( type === "error" ) {
+
+                                                               // Support: IE <=9 only
+                                                               // On a manual native abort, IE9 throws
+                                                               // errors on any property access that is not readyState
+                                                               if ( typeof xhr.status !== "number" ) {
+                                                                       complete( 0, "error" );
+                                                               } else {
+                                                                       complete(
+
+                                                                               // File: protocol always yields status 0; see #8605, #14207
+                                                                               xhr.status,
+                                                                               xhr.statusText
+                                                                       );
+                                                               }
+                                                       } else {
+                                                               complete(
+                                                                       xhrSuccessStatus[ xhr.status ] || xhr.status,
+                                                                       xhr.statusText,
+
+                                                                       // Support: IE <=9 only
+                                                                       // IE9 has no XHR2 but throws on binary (trac-11426)
+                                                                       // For XHR2 non-text, let the caller handle it (gh-2498)
+                                                                       ( xhr.responseType || "text" ) !== "text"  ||
+                                                                       typeof xhr.responseText !== "string" ?
+                                                                               { binary: xhr.response } :
+                                                                               { text: xhr.responseText },
+                                                                       xhr.getAllResponseHeaders()
+                                                               );
+                                                       }
+                                               }
+                                       };
+                               };
+
+                               // Listen to events
+                               xhr.onload = callback();
+                               errorCallback = xhr.onerror = callback( "error" );
+
+                               // Support: IE 9 only
+                               // Use onreadystatechange to replace onabort
+                               // to handle uncaught aborts
+                               if ( xhr.onabort !== undefined ) {
+                                       xhr.onabort = errorCallback;
+                               } else {
+                                       xhr.onreadystatechange = function() {
+
+                                               // Check readyState before timeout as it changes
+                                               if ( xhr.readyState === 4 ) {
+
+                                                       // Allow onerror to be called first,
+                                                       // but that will not handle a native abort
+                                                       // Also, save errorCallback to a variable
+                                                       // as xhr.onerror cannot be accessed
+                                                       window.setTimeout( function() {
+                                                               if ( callback ) {
+                                                                       errorCallback();
+                                                               }
+                                                       } );
+                                               }
+                                       };
+                               }
+
+                               // Create the abort callback
+                               callback = callback( "abort" );
+
+                               try {
+
+                                       // Do send the request (this may raise an exception)
+                                       xhr.send( options.hasContent && options.data || null );
+                               } catch ( e ) {
+
+                                       // #14683: Only rethrow if this hasn't been notified as an error yet
+                                       if ( callback ) {
+                                               throw e;
+                                       }
+                               }
+                       },
+
+                       abort: function() {
+                               if ( callback ) {
+                                       callback();
+                               }
+                       }
+               };
+       }
+} );
+
+
+
+
+// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
+jQuery.ajaxPrefilter( function( s ) {
+       if ( s.crossDomain ) {
+               s.contents.script = false;
+       }
+} );
+
+// Install script dataType
+jQuery.ajaxSetup( {
+       accepts: {
+               script: "text/javascript, application/javascript, " +
+                       "application/ecmascript, application/x-ecmascript"
+       },
+       contents: {
+               script: /\b(?:java|ecma)script\b/
+       },
+       converters: {
+               "text script": function( text ) {
+                       jQuery.globalEval( text );
+                       return text;
+               }
+       }
+} );
+
+// Handle cache's special case and crossDomain
+jQuery.ajaxPrefilter( "script", function( s ) {
+       if ( s.cache === undefined ) {
+               s.cache = false;
+       }
+       if ( s.crossDomain ) {
+               s.type = "GET";
+       }
+} );
+
+// Bind script tag hack transport
+jQuery.ajaxTransport( "script", function( s ) {
+
+       // This transport only deals with cross domain requests
+       if ( s.crossDomain ) {
+               var script, callback;
+               return {
+                       send: function( _, complete ) {
+                               script = jQuery( "<script>" ).prop( {
+                                       charset: s.scriptCharset,
+                                       src: s.url
+                               } ).on(
+                                       "load error",
+                                       callback = function( evt ) {
+                                               script.remove();
+                                               callback = null;
+                                               if ( evt ) {
+                                                       complete( evt.type === "error" ? 404 : 200, evt.type );
+                                               }
+                                       }
+                               );
+
+                               // Use native DOM manipulation to avoid our domManip AJAX trickery
+                               document.head.appendChild( script[ 0 ] );
+                       },
+                       abort: function() {
+                               if ( callback ) {
+                                       callback();
+                               }
+                       }
+               };
+       }
+} );
+
+
+
+
+var oldCallbacks = [],
+       rjsonp = /(=)\?(?=&|$)|\?\?/;
+
+// Default jsonp settings
+jQuery.ajaxSetup( {
+       jsonp: "callback",
+       jsonpCallback: function() {
+               var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
+               this[ callback ] = true;
+               return callback;
+       }
+} );
+
+// Detect, normalize options and install callbacks for jsonp requests
+jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
+
+       var callbackName, overwritten, responseContainer,
+               jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
+                       "url" :
+                       typeof s.data === "string" &&
+                               ( s.contentType || "" )
+                                       .indexOf( "application/x-www-form-urlencoded" ) === 0 &&
+                               rjsonp.test( s.data ) && "data"
+               );
+
+       // Handle iff the expected data type is "jsonp" or we have a parameter to set
+       if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
+
+               // Get callback name, remembering preexisting value associated with it
+               callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+                       s.jsonpCallback() :
+                       s.jsonpCallback;
+
+               // Insert callback into url or form data
+               if ( jsonProp ) {
+                       s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
+               } else if ( s.jsonp !== false ) {
+                       s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
+               }
+
+               // Use data converter to retrieve json after script execution
+               s.converters[ "script json" ] = function() {
+                       if ( !responseContainer ) {
+                               jQuery.error( callbackName + " was not called" );
+                       }
+                       return responseContainer[ 0 ];
+               };
+
+               // Force json dataType
+               s.dataTypes[ 0 ] = "json";
+
+               // Install callback
+               overwritten = window[ callbackName ];
+               window[ callbackName ] = function() {
+                       responseContainer = arguments;
+               };
+
+               // Clean-up function (fires after converters)
+               jqXHR.always( function() {
+
+                       // If previous value didn't exist - remove it
+                       if ( overwritten === undefined ) {
+                               jQuery( window ).removeProp( callbackName );
+
+                       // Otherwise restore preexisting value
+                       } else {
+                               window[ callbackName ] = overwritten;
+                       }
+
+                       // Save back as free
+                       if ( s[ callbackName ] ) {
+
+                               // Make sure that re-using the options doesn't screw things around
+                               s.jsonpCallback = originalSettings.jsonpCallback;
+
+                               // Save the callback name for future use
+                               oldCallbacks.push( callbackName );
+                       }
+
+                       // Call if it was a function and we have a response
+                       if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+                               overwritten( responseContainer[ 0 ] );
+                       }
+
+                       responseContainer = overwritten = undefined;
+               } );
+
+               // Delegate to script
+               return "script";
+       }
+} );
+
+
+
+
+// Support: Safari 8 only
+// In Safari 8 documents created via document.implementation.createHTMLDocument
+// collapse sibling forms: the second one becomes a child of the first one.
+// Because of that, this security measure has to be disabled in Safari 8.
+// https://bugs.webkit.org/show_bug.cgi?id=137337
+support.createHTMLDocument = ( function() {
+       var body = document.implementation.createHTMLDocument( "" ).body;
+       body.innerHTML = "<form></form><form></form>";
+       return body.childNodes.length === 2;
+} )();
+
+
+// Argument "data" should be string of html
+// context (optional): If specified, the fragment will be created in this context,
+// defaults to document
+// keepScripts (optional): If true, will include scripts passed in the html string
+jQuery.parseHTML = function( data, context, keepScripts ) {
+       if ( typeof data !== "string" ) {
+               return [];
+       }
+       if ( typeof context === "boolean" ) {
+               keepScripts = context;
+               context = false;
+       }
+
+       var base, parsed, scripts;
+
+       if ( !context ) {
+
+               // Stop scripts or inline event handlers from being executed immediately
+               // by using document.implementation
+               if ( support.createHTMLDocument ) {
+                       context = document.implementation.createHTMLDocument( "" );
+
+                       // Set the base href for the created document
+                       // so any parsed elements with URLs
+                       // are based on the document's URL (gh-2965)
+                       base = context.createElement( "base" );
+                       base.href = document.location.href;
+                       context.head.appendChild( base );
+               } else {
+                       context = document;
+               }
+       }
+
+       parsed = rsingleTag.exec( data );
+       scripts = !keepScripts && [];
+
+       // Single tag
+       if ( parsed ) {
+               return [ context.createElement( parsed[ 1 ] ) ];
+       }
+
+       parsed = buildFragment( [ data ], context, scripts );
+
+       if ( scripts && scripts.length ) {
+               jQuery( scripts ).remove();
+       }
+
+       return jQuery.merge( [], parsed.childNodes );
+};
+
+
+/**
+ * Load a url into a page
+ */
+jQuery.fn.load = function( url, params, callback ) {
+       var selector, type, response,
+               self = this,
+               off = url.indexOf( " " );
+
+       if ( off > -1 ) {
+               selector = stripAndCollapse( url.slice( off ) );
+               url = url.slice( 0, off );
+       }
+
+       // If it's a function
+       if ( jQuery.isFunction( params ) ) {
+
+               // We assume that it's the callback
+               callback = params;
+               params = undefined;
+
+       // Otherwise, build a param string
+       } else if ( params && typeof params === "object" ) {
+               type = "POST";
+       }
+
+       // If we have elements to modify, make the request
+       if ( self.length > 0 ) {
+               jQuery.ajax( {
+                       url: url,
+
+                       // If "type" variable is undefined, then "GET" method will be used.
+                       // Make value of this field explicit since
+                       // user can override it through ajaxSetup method
+                       type: type || "GET",
+                       dataType: "html",
+                       data: params
+               } ).done( function( responseText ) {
+
+                       // Save response for use in complete callback
+                       response = arguments;
+
+                       self.html( selector ?
+
+                               // If a selector was specified, locate the right elements in a dummy div
+                               // Exclude scripts to avoid IE 'Permission Denied' errors
+                               jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :
+
+                               // Otherwise use the full result
+                               responseText );
+
+               // If the request succeeds, this function gets "data", "status", "jqXHR"
+               // but they are ignored because response was set above.
+               // If it fails, this function gets "jqXHR", "status", "error"
+               } ).always( callback && function( jqXHR, status ) {
+                       self.each( function() {
+                               callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
+                       } );
+               } );
+       }
+
+       return this;
+};
+
+
+
+
+// Attach a bunch of functions for handling common AJAX events
+jQuery.each( [
+       "ajaxStart",
+       "ajaxStop",
+       "ajaxComplete",
+       "ajaxError",
+       "ajaxSuccess",
+       "ajaxSend"
+], function( i, type ) {
+       jQuery.fn[ type ] = function( fn ) {
+               return this.on( type, fn );
+       };
+} );
+
+
+
+
+jQuery.expr.pseudos.animated = function( elem ) {
+       return jQuery.grep( jQuery.timers, function( fn ) {
+               return elem === fn.elem;
+       } ).length;
+};
+
+
+
+
+jQuery.offset = {
+       setOffset: function( elem, options, i ) {
+               var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
+                       position = jQuery.css( elem, "position" ),
+                       curElem = jQuery( elem ),
+                       props = {};
+
+               // Set position first, in-case top/left are set even on static elem
+               if ( position === "static" ) {
+                       elem.style.position = "relative";
+               }
+
+               curOffset = curElem.offset();
+               curCSSTop = jQuery.css( elem, "top" );
+               curCSSLeft = jQuery.css( elem, "left" );
+               calculatePosition = ( position === "absolute" || position === "fixed" ) &&
+                       ( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;
+
+               // Need to be able to calculate position if either
+               // top or left is auto and position is either absolute or fixed
+               if ( calculatePosition ) {
+                       curPosition = curElem.position();
+                       curTop = curPosition.top;
+                       curLeft = curPosition.left;
+
+               } else {
+                       curTop = parseFloat( curCSSTop ) || 0;
+                       curLeft = parseFloat( curCSSLeft ) || 0;
+               }
+
+               if ( jQuery.isFunction( options ) ) {
+
+                       // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
+                       options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
+               }
+
+               if ( options.top != null ) {
+                       props.top = ( options.top - curOffset.top ) + curTop;
+               }
+               if ( options.left != null ) {
+                       props.left = ( options.left - curOffset.left ) + curLeft;
+               }
+
+               if ( "using" in options ) {
+                       options.using.call( elem, props );
+
+               } else {
+                       curElem.css( props );
+               }
+       }
+};
+
+jQuery.fn.extend( {
+       offset: function( options ) {
+
+               // Preserve chaining for setter
+               if ( arguments.length ) {
+                       return options === undefined ?
+                               this :
+                               this.each( function( i ) {
+                                       jQuery.offset.setOffset( this, options, i );
+                               } );
+               }
+
+               var doc, docElem, rect, win,
+                       elem = this[ 0 ];
+
+               if ( !elem ) {
+                       return;
+               }
+
+               // Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+               // Support: IE <=11 only
+               // Running getBoundingClientRect on a
+               // disconnected node in IE throws an error
+               if ( !elem.getClientRects().length ) {
+                       return { top: 0, left: 0 };
+               }
+
+               rect = elem.getBoundingClientRect();
+
+               doc = elem.ownerDocument;
+               docElem = doc.documentElement;
+               win = doc.defaultView;
+
+               return {
+                       top: rect.top + win.pageYOffset - docElem.clientTop,
+                       left: rect.left + win.pageXOffset - docElem.clientLeft
+               };
+       },
+
+       position: function() {
+               if ( !this[ 0 ] ) {
+                       return;
+               }
+
+               var offsetParent, offset,
+                       elem = this[ 0 ],
+                       parentOffset = { top: 0, left: 0 };
+
+               // Fixed elements are offset from window (parentOffset = {top:0, left: 0},
+               // because it is its only offset parent
+               if ( jQuery.css( elem, "position" ) === "fixed" ) {
+
+                       // Assume getBoundingClientRect is there when computed position is fixed
+                       offset = elem.getBoundingClientRect();
+
+               } else {
+
+                       // Get *real* offsetParent
+                       offsetParent = this.offsetParent();
+
+                       // Get correct offsets
+                       offset = this.offset();
+                       if ( !nodeName( offsetParent[ 0 ], "html" ) ) {
+                               parentOffset = offsetParent.offset();
+                       }
+
+                       // Add offsetParent borders
+                       parentOffset = {
+                               top: parentOffset.top + jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ),
+                               left: parentOffset.left + jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true )
+                       };
+               }
+
+               // Subtract parent offsets and element margins
+               return {
+                       top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
+                       left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
+               };
+       },
+
+       // This method will return documentElement in the following cases:
+       // 1) For the element inside the iframe without offsetParent, this method will return
+       //    documentElement of the parent window
+       // 2) For the hidden or detached element
+       // 3) For body or html element, i.e. in case of the html node - it will return itself
+       //
+       // but those exceptions were never presented as a real life use-cases
+       // and might be considered as more preferable results.
+       //
+       // This logic, however, is not guaranteed and can change at any point in the future
+       offsetParent: function() {
+               return this.map( function() {
+                       var offsetParent = this.offsetParent;
+
+                       while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
+                               offsetParent = offsetParent.offsetParent;
+                       }
+
+                       return offsetParent || documentElement;
+               } );
+       }
+} );
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
+       var top = "pageYOffset" === prop;
+
+       jQuery.fn[ method ] = function( val ) {
+               return access( this, function( elem, method, val ) {
+
+                       // Coalesce documents and windows
+                       var win;
+                       if ( jQuery.isWindow( elem ) ) {
+                               win = elem;
+                       } else if ( elem.nodeType === 9 ) {
+                               win = elem.defaultView;
+                       }
+
+                       if ( val === undefined ) {
+                               return win ? win[ prop ] : elem[ method ];
+                       }
+
+                       if ( win ) {
+                               win.scrollTo(
+                                       !top ? val : win.pageXOffset,
+                                       top ? val : win.pageYOffset
+                               );
+
+                       } else {
+                               elem[ method ] = val;
+                       }
+               }, method, val, arguments.length );
+       };
+} );
+
+// Support: Safari <=7 - 9.1, Chrome <=37 - 49
+// Add the top/left cssHooks using jQuery.fn.position
+// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
+// getComputedStyle returns percent when specified for top/left/bottom/right;
+// rather than make the css module depend on the offset module, just check for it here
+jQuery.each( [ "top", "left" ], function( i, prop ) {
+       jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
+               function( elem, computed ) {
+                       if ( computed ) {
+                               computed = curCSS( elem, prop );
+
+                               // If curCSS returns percentage, fallback to offset
+                               return rnumnonpx.test( computed ) ?
+                                       jQuery( elem ).position()[ prop ] + "px" :
+                                       computed;
+                       }
+               }
+       );
+} );
+
+
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
+       jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
+               function( defaultExtra, funcName ) {
+
+               // Margin is only for outerHeight, outerWidth
+               jQuery.fn[ funcName ] = function( margin, value ) {
+                       var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
+                               extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
+
+                       return access( this, function( elem, type, value ) {
+                               var doc;
+
+                               if ( jQuery.isWindow( elem ) ) {
+
+                                       // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
+                                       return funcName.indexOf( "outer" ) === 0 ?
+                                               elem[ "inner" + name ] :
+                                               elem.document.documentElement[ "client" + name ];
+                               }
+
+                               // Get document width or height
+                               if ( elem.nodeType === 9 ) {
+                                       doc = elem.documentElement;
+
+                                       // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
+                                       // whichever is greatest
+                                       return Math.max(
+                                               elem.body[ "scroll" + name ], doc[ "scroll" + name ],
+                                               elem.body[ "offset" + name ], doc[ "offset" + name ],
+                                               doc[ "client" + name ]
+                                       );
+                               }
+
+                               return value === undefined ?
+
+                                       // Get width or height on the element, requesting but not forcing parseFloat
+                                       jQuery.css( elem, type, extra ) :
+
+                                       // Set width or height on the element
+                                       jQuery.style( elem, type, value, extra );
+                       }, type, chainable ? margin : undefined, chainable );
+               };
+       } );
+} );
+
+
+jQuery.fn.extend( {
+
+       bind: function( types, data, fn ) {
+               return this.on( types, null, data, fn );
+       },
+       unbind: function( types, fn ) {
+               return this.off( types, null, fn );
+       },
+
+       delegate: function( selector, types, data, fn ) {
+               return this.on( types, selector, data, fn );
+       },
+       undelegate: function( selector, types, fn ) {
+
+               // ( namespace ) or ( selector, types [, fn] )
+               return arguments.length === 1 ?
+                       this.off( selector, "**" ) :
+                       this.off( types, selector || "**", fn );
+       }
+} );
+
+jQuery.holdReady = function( hold ) {
+       if ( hold ) {
+               jQuery.readyWait++;
+       } else {
+               jQuery.ready( true );
+       }
+};
+jQuery.isArray = Array.isArray;
+jQuery.parseJSON = JSON.parse;
+jQuery.nodeName = nodeName;
+
+
+
+
+// Register as a named AMD module, since jQuery can be concatenated with other
+// files that may use define, but not via a proper concatenation script that
+// understands anonymous AMD modules. A named AMD is safest and most robust
+// way to register. Lowercase jquery is used because AMD module names are
+// derived from file names, and jQuery is normally delivered in a lowercase
+// file name. Do this after creating the global so that if an AMD module wants
+// to call noConflict to hide this version of jQuery, it will work.
+
+// Note that for maximum portability, libraries that are not jQuery should
+// declare themselves as anonymous modules, and avoid setting a global if an
+// AMD loader is present. jQuery is a special case. For more information, see
+// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon
+
+if ( typeof define === "function" && define.amd ) {
+       define( "jquery", [], function() {
+               return jQuery;
+       } );
+}
+
+
+
+
+var
+
+       // Map over jQuery in case of overwrite
+       _jQuery = window.jQuery,
+
+       // Map over the $ in case of overwrite
+       _$ = window.$;
+
+jQuery.noConflict = function( deep ) {
+       if ( window.$ === jQuery ) {
+               window.$ = _$;
+       }
+
+       if ( deep && window.jQuery === jQuery ) {
+               window.jQuery = _jQuery;
+       }
+
+       return jQuery;
+};
+
+// Expose jQuery and $ identifiers, even in AMD
+// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
+// and CommonJS for browser emulators (#13566)
+if ( !noGlobal ) {
+       window.jQuery = window.$ = jQuery;
+}
+
+
+
+
+return jQuery;
+} );
+</script>
+        <script>/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under the MIT license
+ */
+
+if (typeof jQuery === 'undefined') {
+  throw new Error('Bootstrap\'s JavaScript requires jQuery')
+}
+
++function ($) {
+  'use strict';
+  var version = $.fn.jquery.split(' ')[0].split('.')
+  if ((version[0] < 2 && version[1] < 9) || (version[0] == 1 && version[1] == 9 && version[2] < 1) || (version[0] > 3)) {
+    throw new Error('Bootstrap\'s JavaScript requires jQuery version 1.9.1 or higher, but lower than version 4')
+  }
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: transition.js v3.3.7
+ * http://getbootstrap.com/javascript/#transitions
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // CSS TRANSITION SUPPORT (Shoutout: http://www.modernizr.com/)
+  // ============================================================
+
+  function transitionEnd() {
+    var el = document.createElement('bootstrap')
+
+    var transEndEventNames = {
+      WebkitTransition : 'webkitTransitionEnd',
+      MozTransition    : 'transitionend',
+      OTransition      : 'oTransitionEnd otransitionend',
+      transition       : 'transitionend'
+    }
+
+    for (var name in transEndEventNames) {
+      if (el.style[name] !== undefined) {
+        return { end: transEndEventNames[name] }
+      }
+    }
+
+    return false // explicit for ie8 (  ._.)
+  }
+
+  // http://blog.alexmaccaw.com/css-transitions
+  $.fn.emulateTransitionEnd = function (duration) {
+    var called = false
+    var $el = this
+    $(this).one('bsTransitionEnd', function () { called = true })
+    var callback = function () { if (!called) $($el).trigger($.support.transition.end) }
+    setTimeout(callback, duration)
+    return this
+  }
+
+  $(function () {
+    $.support.transition = transitionEnd()
+
+    if (!$.support.transition) return
+
+    $.event.special.bsTransitionEnd = {
+      bindType: $.support.transition.end,
+      delegateType: $.support.transition.end,
+      handle: function (e) {
+        if ($(e.target).is(this)) return e.handleObj.handler.apply(this, arguments)
+      }
+    }
+  })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: alert.js v3.3.7
+ * http://getbootstrap.com/javascript/#alerts
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // ALERT CLASS DEFINITION
+  // ======================
+
+  var dismiss = '[data-dismiss="alert"]'
+  var Alert   = function (el) {
+    $(el).on('click', dismiss, this.close)
+  }
+
+  Alert.VERSION = '3.3.7'
+
+  Alert.TRANSITION_DURATION = 150
+
+  Alert.prototype.close = function (e) {
+    var $this    = $(this)
+    var selector = $this.attr('data-target')
+
+    if (!selector) {
+      selector = $this.attr('href')
+      selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
+    }
+
+    var $parent = $(selector === '#' ? [] : selector)
+
+    if (e) e.preventDefault()
+
+    if (!$parent.length) {
+      $parent = $this.closest('.alert')
+    }
+
+    $parent.trigger(e = $.Event('close.bs.alert'))
+
+    if (e.isDefaultPrevented()) return
+
+    $parent.removeClass('in')
+
+    function removeElement() {
+      // detach from parent, fire event then clean up data
+      $parent.detach().trigger('closed.bs.alert').remove()
+    }
+
+    $.support.transition && $parent.hasClass('fade') ?
+      $parent
+        .one('bsTransitionEnd', removeElement)
+        .emulateTransitionEnd(Alert.TRANSITION_DURATION) :
+      removeElement()
+  }
+
+
+  // ALERT PLUGIN DEFINITION
+  // =======================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this = $(this)
+      var data  = $this.data('bs.alert')
+
+      if (!data) $this.data('bs.alert', (data = new Alert(this)))
+      if (typeof option == 'string') data[option].call($this)
+    })
+  }
+
+  var old = $.fn.alert
+
+  $.fn.alert             = Plugin
+  $.fn.alert.Constructor = Alert
+
+
+  // ALERT NO CONFLICT
+  // =================
+
+  $.fn.alert.noConflict = function () {
+    $.fn.alert = old
+    return this
+  }
+
+
+  // ALERT DATA-API
+  // ==============
+
+  $(document).on('click.bs.alert.data-api', dismiss, Alert.prototype.close)
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: button.js v3.3.7
+ * http://getbootstrap.com/javascript/#buttons
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // BUTTON PUBLIC CLASS DEFINITION
+  // ==============================
+
+  var Button = function (element, options) {
+    this.$element  = $(element)
+    this.options   = $.extend({}, Button.DEFAULTS, options)
+    this.isLoading = false
+  }
+
+  Button.VERSION  = '3.3.7'
+
+  Button.DEFAULTS = {
+    loadingText: 'loading...'
+  }
+
+  Button.prototype.setState = function (state) {
+    var d    = 'disabled'
+    var $el  = this.$element
+    var val  = $el.is('input') ? 'val' : 'html'
+    var data = $el.data()
+
+    state += 'Text'
+
+    if (data.resetText == null) $el.data('resetText', $el[val]())
+
+    // push to event loop to allow forms to submit
+    setTimeout($.proxy(function () {
+      $el[val](data[state] == null ? this.options[state] : data[state])
+
+      if (state == 'loadingText') {
+        this.isLoading = true
+        $el.addClass(d).attr(d, d).prop(d, true)
+      } else if (this.isLoading) {
+        this.isLoading = false
+        $el.removeClass(d).removeAttr(d).prop(d, false)
+      }
+    }, this), 0)
+  }
+
+  Button.prototype.toggle = function () {
+    var changed = true
+    var $parent = this.$element.closest('[data-toggle="buttons"]')
+
+    if ($parent.length) {
+      var $input = this.$element.find('input')
+      if ($input.prop('type') == 'radio') {
+        if ($input.prop('checked')) changed = false
+        $parent.find('.active').removeClass('active')
+        this.$element.addClass('active')
+      } else if ($input.prop('type') == 'checkbox') {
+        if (($input.prop('checked')) !== this.$element.hasClass('active')) changed = false
+        this.$element.toggleClass('active')
+      }
+      $input.prop('checked', this.$element.hasClass('active'))
+      if (changed) $input.trigger('change')
+    } else {
+      this.$element.attr('aria-pressed', !this.$element.hasClass('active'))
+      this.$element.toggleClass('active')
+    }
+  }
+
+
+  // BUTTON PLUGIN DEFINITION
+  // ========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.button')
+      var options = typeof option == 'object' && option
+
+      if (!data) $this.data('bs.button', (data = new Button(this, options)))
+
+      if (option == 'toggle') data.toggle()
+      else if (option) data.setState(option)
+    })
+  }
+
+  var old = $.fn.button
+
+  $.fn.button             = Plugin
+  $.fn.button.Constructor = Button
+
+
+  // BUTTON NO CONFLICT
+  // ==================
+
+  $.fn.button.noConflict = function () {
+    $.fn.button = old
+    return this
+  }
+
+
+  // BUTTON DATA-API
+  // ===============
+
+  $(document)
+    .on('click.bs.button.data-api', '[data-toggle^="button"]', function (e) {
+      var $btn = $(e.target).closest('.btn')
+      Plugin.call($btn, 'toggle')
+      if (!($(e.target).is('input[type="radio"], input[type="checkbox"]'))) {
+        // Prevent double click on radios, and the double selections (so cancellation) on checkboxes
+        e.preventDefault()
+        // The target component still receive the focus
+        if ($btn.is('input,button')) $btn.trigger('focus')
+        else $btn.find('input:visible,button:visible').first().trigger('focus')
+      }
+    })
+    .on('focus.bs.button.data-api blur.bs.button.data-api', '[data-toggle^="button"]', function (e) {
+      $(e.target).closest('.btn').toggleClass('focus', /^focus(in)?$/.test(e.type))
+    })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: carousel.js v3.3.7
+ * http://getbootstrap.com/javascript/#carousel
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // CAROUSEL CLASS DEFINITION
+  // =========================
+
+  var Carousel = function (element, options) {
+    this.$element    = $(element)
+    this.$indicators = this.$element.find('.carousel-indicators')
+    this.options     = options
+    this.paused      = null
+    this.sliding     = null
+    this.interval    = null
+    this.$active     = null
+    this.$items      = null
+
+    this.options.keyboard && this.$element.on('keydown.bs.carousel', $.proxy(this.keydown, this))
+
+    this.options.pause == 'hover' && !('ontouchstart' in document.documentElement) && this.$element
+      .on('mouseenter.bs.carousel', $.proxy(this.pause, this))
+      .on('mouseleave.bs.carousel', $.proxy(this.cycle, this))
+  }
+
+  Carousel.VERSION  = '3.3.7'
+
+  Carousel.TRANSITION_DURATION = 600
+
+  Carousel.DEFAULTS = {
+    interval: 5000,
+    pause: 'hover',
+    wrap: true,
+    keyboard: true
+  }
+
+  Carousel.prototype.keydown = function (e) {
+    if (/input|textarea/i.test(e.target.tagName)) return
+    switch (e.which) {
+      case 37: this.prev(); break
+      case 39: this.next(); break
+      default: return
+    }
+
+    e.preventDefault()
+  }
+
+  Carousel.prototype.cycle = function (e) {
+    e || (this.paused = false)
+
+    this.interval && clearInterval(this.interval)
+
+    this.options.interval
+      && !this.paused
+      && (this.interval = setInterval($.proxy(this.next, this), this.options.interval))
+
+    return this
+  }
+
+  Carousel.prototype.getItemIndex = function (item) {
+    this.$items = item.parent().children('.item')
+    return this.$items.index(item || this.$active)
+  }
+
+  Carousel.prototype.getItemForDirection = function (direction, active) {
+    var activeIndex = this.getItemIndex(active)
+    var willWrap = (direction == 'prev' && activeIndex === 0)
+                || (direction == 'next' && activeIndex == (this.$items.length - 1))
+    if (willWrap && !this.options.wrap) return active
+    var delta = direction == 'prev' ? -1 : 1
+    var itemIndex = (activeIndex + delta) % this.$items.length
+    return this.$items.eq(itemIndex)
+  }
+
+  Carousel.prototype.to = function (pos) {
+    var that        = this
+    var activeIndex = this.getItemIndex(this.$active = this.$element.find('.item.active'))
+
+    if (pos > (this.$items.length - 1) || pos < 0) return
+
+    if (this.sliding)       return this.$element.one('slid.bs.carousel', function () { that.to(pos) }) // yes, "slid"
+    if (activeIndex == pos) return this.pause().cycle()
+
+    return this.slide(pos > activeIndex ? 'next' : 'prev', this.$items.eq(pos))
+  }
+
+  Carousel.prototype.pause = function (e) {
+    e || (this.paused = true)
+
+    if (this.$element.find('.next, .prev').length && $.support.transition) {
+      this.$element.trigger($.support.transition.end)
+      this.cycle(true)
+    }
+
+    this.interval = clearInterval(this.interval)
+
+    return this
+  }
+
+  Carousel.prototype.next = function () {
+    if (this.sliding) return
+    return this.slide('next')
+  }
+
+  Carousel.prototype.prev = function () {
+    if (this.sliding) return
+    return this.slide('prev')
+  }
+
+  Carousel.prototype.slide = function (type, next) {
+    var $active   = this.$element.find('.item.active')
+    var $next     = next || this.getItemForDirection(type, $active)
+    var isCycling = this.interval
+    var direction = type == 'next' ? 'left' : 'right'
+    var that      = this
+
+    if ($next.hasClass('active')) return (this.sliding = false)
+
+    var relatedTarget = $next[0]
+    var slideEvent = $.Event('slide.bs.carousel', {
+      relatedTarget: relatedTarget,
+      direction: direction
+    })
+    this.$element.trigger(slideEvent)
+    if (slideEvent.isDefaultPrevented()) return
+
+    this.sliding = true
+
+    isCycling && this.pause()
+
+    if (this.$indicators.length) {
+      this.$indicators.find('.active').removeClass('active')
+      var $nextIndicator = $(this.$indicators.children()[this.getItemIndex($next)])
+      $nextIndicator && $nextIndicator.addClass('active')
+    }
+
+    var slidEvent = $.Event('slid.bs.carousel', { relatedTarget: relatedTarget, direction: direction }) // yes, "slid"
+    if ($.support.transition && this.$element.hasClass('slide')) {
+      $next.addClass(type)
+      $next[0].offsetWidth // force reflow
+      $active.addClass(direction)
+      $next.addClass(direction)
+      $active
+        .one('bsTransitionEnd', function () {
+          $next.removeClass([type, direction].join(' ')).addClass('active')
+          $active.removeClass(['active', direction].join(' '))
+          that.sliding = false
+          setTimeout(function () {
+            that.$element.trigger(slidEvent)
+          }, 0)
+        })
+        .emulateTransitionEnd(Carousel.TRANSITION_DURATION)
+    } else {
+      $active.removeClass('active')
+      $next.addClass('active')
+      this.sliding = false
+      this.$element.trigger(slidEvent)
+    }
+
+    isCycling && this.cycle()
+
+    return this
+  }
+
+
+  // CAROUSEL PLUGIN DEFINITION
+  // ==========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.carousel')
+      var options = $.extend({}, Carousel.DEFAULTS, $this.data(), typeof option == 'object' && option)
+      var action  = typeof option == 'string' ? option : options.slide
+
+      if (!data) $this.data('bs.carousel', (data = new Carousel(this, options)))
+      if (typeof option == 'number') data.to(option)
+      else if (action) data[action]()
+      else if (options.interval) data.pause().cycle()
+    })
+  }
+
+  var old = $.fn.carousel
+
+  $.fn.carousel             = Plugin
+  $.fn.carousel.Constructor = Carousel
+
+
+  // CAROUSEL NO CONFLICT
+  // ====================
+
+  $.fn.carousel.noConflict = function () {
+    $.fn.carousel = old
+    return this
+  }
+
+
+  // CAROUSEL DATA-API
+  // =================
+
+  var clickHandler = function (e) {
+    var href
+    var $this   = $(this)
+    var $target = $($this.attr('data-target') || (href = $this.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '')) // strip for ie7
+    if (!$target.hasClass('carousel')) return
+    var options = $.extend({}, $target.data(), $this.data())
+    var slideIndex = $this.attr('data-slide-to')
+    if (slideIndex) options.interval = false
+
+    Plugin.call($target, options)
+
+    if (slideIndex) {
+      $target.data('bs.carousel').to(slideIndex)
+    }
+
+    e.preventDefault()
+  }
+
+  $(document)
+    .on('click.bs.carousel.data-api', '[data-slide]', clickHandler)
+    .on('click.bs.carousel.data-api', '[data-slide-to]', clickHandler)
+
+  $(window).on('load', function () {
+    $('[data-ride="carousel"]').each(function () {
+      var $carousel = $(this)
+      Plugin.call($carousel, $carousel.data())
+    })
+  })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: collapse.js v3.3.7
+ * http://getbootstrap.com/javascript/#collapse
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+/* jshint latedef: false */
+
++function ($) {
+  'use strict';
+
+  // COLLAPSE PUBLIC CLASS DEFINITION
+  // ================================
+
+  var Collapse = function (element, options) {
+    this.$element      = $(element)
+    this.options       = $.extend({}, Collapse.DEFAULTS, options)
+    this.$trigger      = $('[data-toggle="collapse"][href="#' + element.id + '"],' +
+                           '[data-toggle="collapse"][data-target="#' + element.id + '"]')
+    this.transitioning = null
+
+    if (this.options.parent) {
+      this.$parent = this.getParent()
+    } else {
+      this.addAriaAndCollapsedClass(this.$element, this.$trigger)
+    }
+
+    if (this.options.toggle) this.toggle()
+  }
+
+  Collapse.VERSION  = '3.3.7'
+
+  Collapse.TRANSITION_DURATION = 350
+
+  Collapse.DEFAULTS = {
+    toggle: true
+  }
+
+  Collapse.prototype.dimension = function () {
+    var hasWidth = this.$element.hasClass('width')
+    return hasWidth ? 'width' : 'height'
+  }
+
+  Collapse.prototype.show = function () {
+    if (this.transitioning || this.$element.hasClass('in')) return
+
+    var activesData
+    var actives = this.$parent && this.$parent.children('.panel').children('.in, .collapsing')
+
+    if (actives && actives.length) {
+      activesData = actives.data('bs.collapse')
+      if (activesData && activesData.transitioning) return
+    }
+
+    var startEvent = $.Event('show.bs.collapse')
+    this.$element.trigger(startEvent)
+    if (startEvent.isDefaultPrevented()) return
+
+    if (actives && actives.length) {
+      Plugin.call(actives, 'hide')
+      activesData || actives.data('bs.collapse', null)
+    }
+
+    var dimension = this.dimension()
+
+    this.$element
+      .removeClass('collapse')
+      .addClass('collapsing')[dimension](0)
+      .attr('aria-expanded', true)
+
+    this.$trigger
+      .removeClass('collapsed')
+      .attr('aria-expanded', true)
+
+    this.transitioning = 1
+
+    var complete = function () {
+      this.$element
+        .removeClass('collapsing')
+        .addClass('collapse in')[dimension]('')
+      this.transitioning = 0
+      this.$element
+        .trigger('shown.bs.collapse')
+    }
+
+    if (!$.support.transition) return complete.call(this)
+
+    var scrollSize = $.camelCase(['scroll', dimension].join('-'))
+
+    this.$element
+      .one('bsTransitionEnd', $.proxy(complete, this))
+      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)[dimension](this.$element[0][scrollSize])
+  }
+
+  Collapse.prototype.hide = function () {
+    if (this.transitioning || !this.$element.hasClass('in')) return
+
+    var startEvent = $.Event('hide.bs.collapse')
+    this.$element.trigger(startEvent)
+    if (startEvent.isDefaultPrevented()) return
+
+    var dimension = this.dimension()
+
+    this.$element[dimension](this.$element[dimension]())[0].offsetHeight
+
+    this.$element
+      .addClass('collapsing')
+      .removeClass('collapse in')
+      .attr('aria-expanded', false)
+
+    this.$trigger
+      .addClass('collapsed')
+      .attr('aria-expanded', false)
+
+    this.transitioning = 1
+
+    var complete = function () {
+      this.transitioning = 0
+      this.$element
+        .removeClass('collapsing')
+        .addClass('collapse')
+        .trigger('hidden.bs.collapse')
+    }
+
+    if (!$.support.transition) return complete.call(this)
+
+    this.$element
+      [dimension](0)
+      .one('bsTransitionEnd', $.proxy(complete, this))
+      .emulateTransitionEnd(Collapse.TRANSITION_DURATION)
+  }
+
+  Collapse.prototype.toggle = function () {
+    this[this.$element.hasClass('in') ? 'hide' : 'show']()
+  }
+
+  Collapse.prototype.getParent = function () {
+    return $(this.options.parent)
+      .find('[data-toggle="collapse"][data-parent="' + this.options.parent + '"]')
+      .each($.proxy(function (i, element) {
+        var $element = $(element)
+        this.addAriaAndCollapsedClass(getTargetFromTrigger($element), $element)
+      }, this))
+      .end()
+  }
+
+  Collapse.prototype.addAriaAndCollapsedClass = function ($element, $trigger) {
+    var isOpen = $element.hasClass('in')
+
+    $element.attr('aria-expanded', isOpen)
+    $trigger
+      .toggleClass('collapsed', !isOpen)
+      .attr('aria-expanded', isOpen)
+  }
+
+  function getTargetFromTrigger($trigger) {
+    var href
+    var target = $trigger.attr('data-target')
+      || (href = $trigger.attr('href')) && href.replace(/.*(?=#[^\s]+$)/, '') // strip for ie7
+
+    return $(target)
+  }
+
+
+  // COLLAPSE PLUGIN DEFINITION
+  // ==========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.collapse')
+      var options = $.extend({}, Collapse.DEFAULTS, $this.data(), typeof option == 'object' && option)
+
+      if (!data && options.toggle && /show|hide/.test(option)) options.toggle = false
+      if (!data) $this.data('bs.collapse', (data = new Collapse(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.collapse
+
+  $.fn.collapse             = Plugin
+  $.fn.collapse.Constructor = Collapse
+
+
+  // COLLAPSE NO CONFLICT
+  // ====================
+
+  $.fn.collapse.noConflict = function () {
+    $.fn.collapse = old
+    return this
+  }
+
+
+  // COLLAPSE DATA-API
+  // =================
+
+  $(document).on('click.bs.collapse.data-api', '[data-toggle="collapse"]', function (e) {
+    var $this   = $(this)
+
+    if (!$this.attr('data-target')) e.preventDefault()
+
+    var $target = getTargetFromTrigger($this)
+    var data    = $target.data('bs.collapse')
+    var option  = data ? 'toggle' : $this.data()
+
+    Plugin.call($target, option)
+  })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: dropdown.js v3.3.7
+ * http://getbootstrap.com/javascript/#dropdowns
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // DROPDOWN CLASS DEFINITION
+  // =========================
+
+  var backdrop = '.dropdown-backdrop'
+  var toggle   = '[data-toggle="dropdown"]'
+  var Dropdown = function (element) {
+    $(element).on('click.bs.dropdown', this.toggle)
+  }
+
+  Dropdown.VERSION = '3.3.7'
+
+  function getParent($this) {
+    var selector = $this.attr('data-target')
+
+    if (!selector) {
+      selector = $this.attr('href')
+      selector = selector && /#[A-Za-z]/.test(selector) && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
+    }
+
+    var $parent = selector && $(selector)
+
+    return $parent && $parent.length ? $parent : $this.parent()
+  }
+
+  function clearMenus(e) {
+    if (e && e.which === 3) return
+    $(backdrop).remove()
+    $(toggle).each(function () {
+      var $this         = $(this)
+      var $parent       = getParent($this)
+      var relatedTarget = { relatedTarget: this }
+
+      if (!$parent.hasClass('open')) return
+
+      if (e && e.type == 'click' && /input|textarea/i.test(e.target.tagName) && $.contains($parent[0], e.target)) return
+
+      $parent.trigger(e = $.Event('hide.bs.dropdown', relatedTarget))
+
+      if (e.isDefaultPrevented()) return
+
+      $this.attr('aria-expanded', 'false')
+      $parent.removeClass('open').trigger($.Event('hidden.bs.dropdown', relatedTarget))
+    })
+  }
+
+  Dropdown.prototype.toggle = function (e) {
+    var $this = $(this)
+
+    if ($this.is('.disabled, :disabled')) return
+
+    var $parent  = getParent($this)
+    var isActive = $parent.hasClass('open')
+
+    clearMenus()
+
+    if (!isActive) {
+      if ('ontouchstart' in document.documentElement && !$parent.closest('.navbar-nav').length) {
+        // if mobile we use a backdrop because click events don't delegate
+        $(document.createElement('div'))
+          .addClass('dropdown-backdrop')
+          .insertAfter($(this))
+          .on('click', clearMenus)
+      }
+
+      var relatedTarget = { relatedTarget: this }
+      $parent.trigger(e = $.Event('show.bs.dropdown', relatedTarget))
+
+      if (e.isDefaultPrevented()) return
+
+      $this
+        .trigger('focus')
+        .attr('aria-expanded', 'true')
+
+      $parent
+        .toggleClass('open')
+        .trigger($.Event('shown.bs.dropdown', relatedTarget))
+    }
+
+    return false
+  }
+
+  Dropdown.prototype.keydown = function (e) {
+    if (!/(38|40|27|32)/.test(e.which) || /input|textarea/i.test(e.target.tagName)) return
+
+    var $this = $(this)
+
+    e.preventDefault()
+    e.stopPropagation()
+
+    if ($this.is('.disabled, :disabled')) return
+
+    var $parent  = getParent($this)
+    var isActive = $parent.hasClass('open')
+
+    if (!isActive && e.which != 27 || isActive && e.which == 27) {
+      if (e.which == 27) $parent.find(toggle).trigger('focus')
+      return $this.trigger('click')
+    }
+
+    var desc = ' li:not(.disabled):visible a'
+    var $items = $parent.find('.dropdown-menu' + desc)
+
+    if (!$items.length) return
+
+    var index = $items.index(e.target)
+
+    if (e.which == 38 && index > 0)                 index--         // up
+    if (e.which == 40 && index < $items.length - 1) index++         // down
+    if (!~index)                                    index = 0
+
+    $items.eq(index).trigger('focus')
+  }
+
+
+  // DROPDOWN PLUGIN DEFINITION
+  // ==========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this = $(this)
+      var data  = $this.data('bs.dropdown')
+
+      if (!data) $this.data('bs.dropdown', (data = new Dropdown(this)))
+      if (typeof option == 'string') data[option].call($this)
+    })
+  }
+
+  var old = $.fn.dropdown
+
+  $.fn.dropdown             = Plugin
+  $.fn.dropdown.Constructor = Dropdown
+
+
+  // DROPDOWN NO CONFLICT
+  // ====================
+
+  $.fn.dropdown.noConflict = function () {
+    $.fn.dropdown = old
+    return this
+  }
+
+
+  // APPLY TO STANDARD DROPDOWN ELEMENTS
+  // ===================================
+
+  $(document)
+    .on('click.bs.dropdown.data-api', clearMenus)
+    .on('click.bs.dropdown.data-api', '.dropdown form', function (e) { e.stopPropagation() })
+    .on('click.bs.dropdown.data-api', toggle, Dropdown.prototype.toggle)
+    .on('keydown.bs.dropdown.data-api', toggle, Dropdown.prototype.keydown)
+    .on('keydown.bs.dropdown.data-api', '.dropdown-menu', Dropdown.prototype.keydown)
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: modal.js v3.3.7
+ * http://getbootstrap.com/javascript/#modals
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // MODAL CLASS DEFINITION
+  // ======================
+
+  var Modal = function (element, options) {
+    this.options             = options
+    this.$body               = $(document.body)
+    this.$element            = $(element)
+    this.$dialog             = this.$element.find('.modal-dialog')
+    this.$backdrop           = null
+    this.isShown             = null
+    this.originalBodyPad     = null
+    this.scrollbarWidth      = 0
+    this.ignoreBackdropClick = false
+
+    if (this.options.remote) {
+      this.$element
+        .find('.modal-content')
+        .load(this.options.remote, $.proxy(function () {
+          this.$element.trigger('loaded.bs.modal')
+        }, this))
+    }
+  }
+
+  Modal.VERSION  = '3.3.7'
+
+  Modal.TRANSITION_DURATION = 300
+  Modal.BACKDROP_TRANSITION_DURATION = 150
+
+  Modal.DEFAULTS = {
+    backdrop: true,
+    keyboard: true,
+    show: true
+  }
+
+  Modal.prototype.toggle = function (_relatedTarget) {
+    return this.isShown ? this.hide() : this.show(_relatedTarget)
+  }
+
+  Modal.prototype.show = function (_relatedTarget) {
+    var that = this
+    var e    = $.Event('show.bs.modal', { relatedTarget: _relatedTarget })
+
+    this.$element.trigger(e)
+
+    if (this.isShown || e.isDefaultPrevented()) return
+
+    this.isShown = true
+
+    this.checkScrollbar()
+    this.setScrollbar()
+    this.$body.addClass('modal-open')
+
+    this.escape()
+    this.resize()
+
+    this.$element.on('click.dismiss.bs.modal', '[data-dismiss="modal"]', $.proxy(this.hide, this))
+
+    this.$dialog.on('mousedown.dismiss.bs.modal', function () {
+      that.$element.one('mouseup.dismiss.bs.modal', function (e) {
+        if ($(e.target).is(that.$element)) that.ignoreBackdropClick = true
+      })
+    })
+
+    this.backdrop(function () {
+      var transition = $.support.transition && that.$element.hasClass('fade')
+
+      if (!that.$element.parent().length) {
+        that.$element.appendTo(that.$body) // don't move modals dom position
+      }
+
+      that.$element
+        .show()
+        .scrollTop(0)
+
+      that.adjustDialog()
+
+      if (transition) {
+        that.$element[0].offsetWidth // force reflow
+      }
+
+      that.$element.addClass('in')
+
+      that.enforceFocus()
+
+      var e = $.Event('shown.bs.modal', { relatedTarget: _relatedTarget })
+
+      transition ?
+        that.$dialog // wait for modal to slide in
+          .one('bsTransitionEnd', function () {
+            that.$element.trigger('focus').trigger(e)
+          })
+          .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
+        that.$element.trigger('focus').trigger(e)
+    })
+  }
+
+  Modal.prototype.hide = function (e) {
+    if (e) e.preventDefault()
+
+    e = $.Event('hide.bs.modal')
+
+    this.$element.trigger(e)
+
+    if (!this.isShown || e.isDefaultPrevented()) return
+
+    this.isShown = false
+
+    this.escape()
+    this.resize()
+
+    $(document).off('focusin.bs.modal')
+
+    this.$element
+      .removeClass('in')
+      .off('click.dismiss.bs.modal')
+      .off('mouseup.dismiss.bs.modal')
+
+    this.$dialog.off('mousedown.dismiss.bs.modal')
+
+    $.support.transition && this.$element.hasClass('fade') ?
+      this.$element
+        .one('bsTransitionEnd', $.proxy(this.hideModal, this))
+        .emulateTransitionEnd(Modal.TRANSITION_DURATION) :
+      this.hideModal()
+  }
+
+  Modal.prototype.enforceFocus = function () {
+    $(document)
+      .off('focusin.bs.modal') // guard against infinite focus loop
+      .on('focusin.bs.modal', $.proxy(function (e) {
+        if (document !== e.target &&
+            this.$element[0] !== e.target &&
+            !this.$element.has(e.target).length) {
+          this.$element.trigger('focus')
+        }
+      }, this))
+  }
+
+  Modal.prototype.escape = function () {
+    if (this.isShown && this.options.keyboard) {
+      this.$element.on('keydown.dismiss.bs.modal', $.proxy(function (e) {
+        e.which == 27 && this.hide()
+      }, this))
+    } else if (!this.isShown) {
+      this.$element.off('keydown.dismiss.bs.modal')
+    }
+  }
+
+  Modal.prototype.resize = function () {
+    if (this.isShown) {
+      $(window).on('resize.bs.modal', $.proxy(this.handleUpdate, this))
+    } else {
+      $(window).off('resize.bs.modal')
+    }
+  }
+
+  Modal.prototype.hideModal = function () {
+    var that = this
+    this.$element.hide()
+    this.backdrop(function () {
+      that.$body.removeClass('modal-open')
+      that.resetAdjustments()
+      that.resetScrollbar()
+      that.$element.trigger('hidden.bs.modal')
+    })
+  }
+
+  Modal.prototype.removeBackdrop = function () {
+    this.$backdrop && this.$backdrop.remove()
+    this.$backdrop = null
+  }
+
+  Modal.prototype.backdrop = function (callback) {
+    var that = this
+    var animate = this.$element.hasClass('fade') ? 'fade' : ''
+
+    if (this.isShown && this.options.backdrop) {
+      var doAnimate = $.support.transition && animate
+
+      this.$backdrop = $(document.createElement('div'))
+        .addClass('modal-backdrop ' + animate)
+        .appendTo(this.$body)
+
+      this.$element.on('click.dismiss.bs.modal', $.proxy(function (e) {
+        if (this.ignoreBackdropClick) {
+          this.ignoreBackdropClick = false
+          return
+        }
+        if (e.target !== e.currentTarget) return
+        this.options.backdrop == 'static'
+          ? this.$element[0].focus()
+          : this.hide()
+      }, this))
+
+      if (doAnimate) this.$backdrop[0].offsetWidth // force reflow
+
+      this.$backdrop.addClass('in')
+
+      if (!callback) return
+
+      doAnimate ?
+        this.$backdrop
+          .one('bsTransitionEnd', callback)
+          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
+        callback()
+
+    } else if (!this.isShown && this.$backdrop) {
+      this.$backdrop.removeClass('in')
+
+      var callbackRemove = function () {
+        that.removeBackdrop()
+        callback && callback()
+      }
+      $.support.transition && this.$element.hasClass('fade') ?
+        this.$backdrop
+          .one('bsTransitionEnd', callbackRemove)
+          .emulateTransitionEnd(Modal.BACKDROP_TRANSITION_DURATION) :
+        callbackRemove()
+
+    } else if (callback) {
+      callback()
+    }
+  }
+
+  // these following methods are used to handle overflowing modals
+
+  Modal.prototype.handleUpdate = function () {
+    this.adjustDialog()
+  }
+
+  Modal.prototype.adjustDialog = function () {
+    var modalIsOverflowing = this.$element[0].scrollHeight > document.documentElement.clientHeight
+
+    this.$element.css({
+      paddingLeft:  !this.bodyIsOverflowing && modalIsOverflowing ? this.scrollbarWidth : '',
+      paddingRight: this.bodyIsOverflowing && !modalIsOverflowing ? this.scrollbarWidth : ''
+    })
+  }
+
+  Modal.prototype.resetAdjustments = function () {
+    this.$element.css({
+      paddingLeft: '',
+      paddingRight: ''
+    })
+  }
+
+  Modal.prototype.checkScrollbar = function () {
+    var fullWindowWidth = window.innerWidth
+    if (!fullWindowWidth) { // workaround for missing window.innerWidth in IE8
+      var documentElementRect = document.documentElement.getBoundingClientRect()
+      fullWindowWidth = documentElementRect.right - Math.abs(documentElementRect.left)
+    }
+    this.bodyIsOverflowing = document.body.clientWidth < fullWindowWidth
+    this.scrollbarWidth = this.measureScrollbar()
+  }
+
+  Modal.prototype.setScrollbar = function () {
+    var bodyPad = parseInt((this.$body.css('padding-right') || 0), 10)
+    this.originalBodyPad = document.body.style.paddingRight || ''
+    if (this.bodyIsOverflowing) this.$body.css('padding-right', bodyPad + this.scrollbarWidth)
+  }
+
+  Modal.prototype.resetScrollbar = function () {
+    this.$body.css('padding-right', this.originalBodyPad)
+  }
+
+  Modal.prototype.measureScrollbar = function () { // thx walsh
+    var scrollDiv = document.createElement('div')
+    scrollDiv.className = 'modal-scrollbar-measure'
+    this.$body.append(scrollDiv)
+    var scrollbarWidth = scrollDiv.offsetWidth - scrollDiv.clientWidth
+    this.$body[0].removeChild(scrollDiv)
+    return scrollbarWidth
+  }
+
+
+  // MODAL PLUGIN DEFINITION
+  // =======================
+
+  function Plugin(option, _relatedTarget) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.modal')
+      var options = $.extend({}, Modal.DEFAULTS, $this.data(), typeof option == 'object' && option)
+
+      if (!data) $this.data('bs.modal', (data = new Modal(this, options)))
+      if (typeof option == 'string') data[option](_relatedTarget)
+      else if (options.show) data.show(_relatedTarget)
+    })
+  }
+
+  var old = $.fn.modal
+
+  $.fn.modal             = Plugin
+  $.fn.modal.Constructor = Modal
+
+
+  // MODAL NO CONFLICT
+  // =================
+
+  $.fn.modal.noConflict = function () {
+    $.fn.modal = old
+    return this
+  }
+
+
+  // MODAL DATA-API
+  // ==============
+
+  $(document).on('click.bs.modal.data-api', '[data-toggle="modal"]', function (e) {
+    var $this   = $(this)
+    var href    = $this.attr('href')
+    var $target = $($this.attr('data-target') || (href && href.replace(/.*(?=#[^\s]+$)/, ''))) // strip for ie7
+    var option  = $target.data('bs.modal') ? 'toggle' : $.extend({ remote: !/#/.test(href) && href }, $target.data(), $this.data())
+
+    if ($this.is('a')) e.preventDefault()
+
+    $target.one('show.bs.modal', function (showEvent) {
+      if (showEvent.isDefaultPrevented()) return // only register focus restorer if modal will actually get shown
+      $target.one('hidden.bs.modal', function () {
+        $this.is(':visible') && $this.trigger('focus')
+      })
+    })
+    Plugin.call($target, option, this)
+  })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: tooltip.js v3.3.7
+ * http://getbootstrap.com/javascript/#tooltip
+ * Inspired by the original jQuery.tipsy by Jason Frame
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // TOOLTIP PUBLIC CLASS DEFINITION
+  // ===============================
+
+  var Tooltip = function (element, options) {
+    this.type       = null
+    this.options    = null
+    this.enabled    = null
+    this.timeout    = null
+    this.hoverState = null
+    this.$element   = null
+    this.inState    = null
+
+    this.init('tooltip', element, options)
+  }
+
+  Tooltip.VERSION  = '3.3.7'
+
+  Tooltip.TRANSITION_DURATION = 150
+
+  Tooltip.DEFAULTS = {
+    animation: true,
+    placement: 'top',
+    selector: false,
+    template: '<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',
+    trigger: 'hover focus',
+    title: '',
+    delay: 0,
+    html: false,
+    container: false,
+    viewport: {
+      selector: 'body',
+      padding: 0
+    }
+  }
+
+  Tooltip.prototype.init = function (type, element, options) {
+    this.enabled   = true
+    this.type      = type
+    this.$element  = $(element)
+    this.options   = this.getOptions(options)
+    this.$viewport = this.options.viewport && $($.isFunction(this.options.viewport) ? this.options.viewport.call(this, this.$element) : (this.options.viewport.selector || this.options.viewport))
+    this.inState   = { click: false, hover: false, focus: false }
+
+    if (this.$element[0] instanceof document.constructor && !this.options.selector) {
+      throw new Error('`selector` option must be specified when initializing ' + this.type + ' on the window.document object!')
+    }
+
+    var triggers = this.options.trigger.split(' ')
+
+    for (var i = triggers.length; i--;) {
+      var trigger = triggers[i]
+
+      if (trigger == 'click') {
+        this.$element.on('click.' + this.type, this.options.selector, $.proxy(this.toggle, this))
+      } else if (trigger != 'manual') {
+        var eventIn  = trigger == 'hover' ? 'mouseenter' : 'focusin'
+        var eventOut = trigger == 'hover' ? 'mouseleave' : 'focusout'
+
+        this.$element.on(eventIn  + '.' + this.type, this.options.selector, $.proxy(this.enter, this))
+        this.$element.on(eventOut + '.' + this.type, this.options.selector, $.proxy(this.leave, this))
+      }
+    }
+
+    this.options.selector ?
+      (this._options = $.extend({}, this.options, { trigger: 'manual', selector: '' })) :
+      this.fixTitle()
+  }
+
+  Tooltip.prototype.getDefaults = function () {
+    return Tooltip.DEFAULTS
+  }
+
+  Tooltip.prototype.getOptions = function (options) {
+    options = $.extend({}, this.getDefaults(), this.$element.data(), options)
+
+    if (options.delay && typeof options.delay == 'number') {
+      options.delay = {
+        show: options.delay,
+        hide: options.delay
+      }
+    }
+
+    return options
+  }
+
+  Tooltip.prototype.getDelegateOptions = function () {
+    var options  = {}
+    var defaults = this.getDefaults()
+
+    this._options && $.each(this._options, function (key, value) {
+      if (defaults[key] != value) options[key] = value
+    })
+
+    return options
+  }
+
+  Tooltip.prototype.enter = function (obj) {
+    var self = obj instanceof this.constructor ?
+      obj : $(obj.currentTarget).data('bs.' + this.type)
+
+    if (!self) {
+      self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
+      $(obj.currentTarget).data('bs.' + this.type, self)
+    }
+
+    if (obj instanceof $.Event) {
+      self.inState[obj.type == 'focusin' ? 'focus' : 'hover'] = true
+    }
+
+    if (self.tip().hasClass('in') || self.hoverState == 'in') {
+      self.hoverState = 'in'
+      return
+    }
+
+    clearTimeout(self.timeout)
+
+    self.hoverState = 'in'
+
+    if (!self.options.delay || !self.options.delay.show) return self.show()
+
+    self.timeout = setTimeout(function () {
+      if (self.hoverState == 'in') self.show()
+    }, self.options.delay.show)
+  }
+
+  Tooltip.prototype.isInStateTrue = function () {
+    for (var key in this.inState) {
+      if (this.inState[key]) return true
+    }
+
+    return false
+  }
+
+  Tooltip.prototype.leave = function (obj) {
+    var self = obj instanceof this.constructor ?
+      obj : $(obj.currentTarget).data('bs.' + this.type)
+
+    if (!self) {
+      self = new this.constructor(obj.currentTarget, this.getDelegateOptions())
+      $(obj.currentTarget).data('bs.' + this.type, self)
+    }
+
+    if (obj instanceof $.Event) {
+      self.inState[obj.type == 'focusout' ? 'focus' : 'hover'] = false
+    }
+
+    if (self.isInStateTrue()) return
+
+    clearTimeout(self.timeout)
+
+    self.hoverState = 'out'
+
+    if (!self.options.delay || !self.options.delay.hide) return self.hide()
+
+    self.timeout = setTimeout(function () {
+      if (self.hoverState == 'out') self.hide()
+    }, self.options.delay.hide)
+  }
+
+  Tooltip.prototype.show = function () {
+    var e = $.Event('show.bs.' + this.type)
+
+    if (this.hasContent() && this.enabled) {
+      this.$element.trigger(e)
+
+      var inDom = $.contains(this.$element[0].ownerDocument.documentElement, this.$element[0])
+      if (e.isDefaultPrevented() || !inDom) return
+      var that = this
+
+      var $tip = this.tip()
+
+      var tipId = this.getUID(this.type)
+
+      this.setContent()
+      $tip.attr('id', tipId)
+      this.$element.attr('aria-describedby', tipId)
+
+      if (this.options.animation) $tip.addClass('fade')
+
+      var placement = typeof this.options.placement == 'function' ?
+        this.options.placement.call(this, $tip[0], this.$element[0]) :
+        this.options.placement
+
+      var autoToken = /\s?auto?\s?/i
+      var autoPlace = autoToken.test(placement)
+      if (autoPlace) placement = placement.replace(autoToken, '') || 'top'
+
+      $tip
+        .detach()
+        .css({ top: 0, left: 0, display: 'block' })
+        .addClass(placement)
+        .data('bs.' + this.type, this)
+
+      this.options.container ? $tip.appendTo(this.options.container) : $tip.insertAfter(this.$element)
+      this.$element.trigger('inserted.bs.' + this.type)
+
+      var pos          = this.getPosition()
+      var actualWidth  = $tip[0].offsetWidth
+      var actualHeight = $tip[0].offsetHeight
+
+      if (autoPlace) {
+        var orgPlacement = placement
+        var viewportDim = this.getPosition(this.$viewport)
+
+        placement = placement == 'bottom' && pos.bottom + actualHeight > viewportDim.bottom ? 'top'    :
+                    placement == 'top'    && pos.top    - actualHeight < viewportDim.top    ? 'bottom' :
+                    placement == 'right'  && pos.right  + actualWidth  > viewportDim.width  ? 'left'   :
+                    placement == 'left'   && pos.left   - actualWidth  < viewportDim.left   ? 'right'  :
+                    placement
+
+        $tip
+          .removeClass(orgPlacement)
+          .addClass(placement)
+      }
+
+      var calculatedOffset = this.getCalculatedOffset(placement, pos, actualWidth, actualHeight)
+
+      this.applyPlacement(calculatedOffset, placement)
+
+      var complete = function () {
+        var prevHoverState = that.hoverState
+        that.$element.trigger('shown.bs.' + that.type)
+        that.hoverState = null
+
+        if (prevHoverState == 'out') that.leave(that)
+      }
+
+      $.support.transition && this.$tip.hasClass('fade') ?
+        $tip
+          .one('bsTransitionEnd', complete)
+          .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
+        complete()
+    }
+  }
+
+  Tooltip.prototype.applyPlacement = function (offset, placement) {
+    var $tip   = this.tip()
+    var width  = $tip[0].offsetWidth
+    var height = $tip[0].offsetHeight
+
+    // manually read margins because getBoundingClientRect includes difference
+    var marginTop = parseInt($tip.css('margin-top'), 10)
+    var marginLeft = parseInt($tip.css('margin-left'), 10)
+
+    // we must check for NaN for ie 8/9
+    if (isNaN(marginTop))  marginTop  = 0
+    if (isNaN(marginLeft)) marginLeft = 0
+
+    offset.top  += marginTop
+    offset.left += marginLeft
+
+    // $.fn.offset doesn't round pixel values
+    // so we use setOffset directly with our own function B-0
+    $.offset.setOffset($tip[0], $.extend({
+      using: function (props) {
+        $tip.css({
+          top: Math.round(props.top),
+          left: Math.round(props.left)
+        })
+      }
+    }, offset), 0)
+
+    $tip.addClass('in')
+
+    // check to see if placing tip in new offset caused the tip to resize itself
+    var actualWidth  = $tip[0].offsetWidth
+    var actualHeight = $tip[0].offsetHeight
+
+    if (placement == 'top' && actualHeight != height) {
+      offset.top = offset.top + height - actualHeight
+    }
+
+    var delta = this.getViewportAdjustedDelta(placement, offset, actualWidth, actualHeight)
+
+    if (delta.left) offset.left += delta.left
+    else offset.top += delta.top
+
+    var isVertical          = /top|bottom/.test(placement)
+    var arrowDelta          = isVertical ? delta.left * 2 - width + actualWidth : delta.top * 2 - height + actualHeight
+    var arrowOffsetPosition = isVertical ? 'offsetWidth' : 'offsetHeight'
+
+    $tip.offset(offset)
+    this.replaceArrow(arrowDelta, $tip[0][arrowOffsetPosition], isVertical)
+  }
+
+  Tooltip.prototype.replaceArrow = function (delta, dimension, isVertical) {
+    this.arrow()
+      .css(isVertical ? 'left' : 'top', 50 * (1 - delta / dimension) + '%')
+      .css(isVertical ? 'top' : 'left', '')
+  }
+
+  Tooltip.prototype.setContent = function () {
+    var $tip  = this.tip()
+    var title = this.getTitle()
+
+    $tip.find('.tooltip-inner')[this.options.html ? 'html' : 'text'](title)
+    $tip.removeClass('fade in top bottom left right')
+  }
+
+  Tooltip.prototype.hide = function (callback) {
+    var that = this
+    var $tip = $(this.$tip)
+    var e    = $.Event('hide.bs.' + this.type)
+
+    function complete() {
+      if (that.hoverState != 'in') $tip.detach()
+      if (that.$element) { // TODO: Check whether guarding this code with this `if` is really necessary.
+        that.$element
+          .removeAttr('aria-describedby')
+          .trigger('hidden.bs.' + that.type)
+      }
+      callback && callback()
+    }
+
+    this.$element.trigger(e)
+
+    if (e.isDefaultPrevented()) return
+
+    $tip.removeClass('in')
+
+    $.support.transition && $tip.hasClass('fade') ?
+      $tip
+        .one('bsTransitionEnd', complete)
+        .emulateTransitionEnd(Tooltip.TRANSITION_DURATION) :
+      complete()
+
+    this.hoverState = null
+
+    return this
+  }
+
+  Tooltip.prototype.fixTitle = function () {
+    var $e = this.$element
+    if ($e.attr('title') || typeof $e.attr('data-original-title') != 'string') {
+      $e.attr('data-original-title', $e.attr('title') || '').attr('title', '')
+    }
+  }
+
+  Tooltip.prototype.hasContent = function () {
+    return this.getTitle()
+  }
+
+  Tooltip.prototype.getPosition = function ($element) {
+    $element   = $element || this.$element
+
+    var el     = $element[0]
+    var isBody = el.tagName == 'BODY'
+
+    var elRect    = el.getBoundingClientRect()
+    if (elRect.width == null) {
+      // width and height are missing in IE8, so compute them manually; see https://github.com/twbs/bootstrap/issues/14093
+      elRect = $.extend({}, elRect, { width: elRect.right - elRect.left, height: elRect.bottom - elRect.top })
+    }
+    var isSvg = window.SVGElement && el instanceof window.SVGElement
+    // Avoid using $.offset() on SVGs since it gives incorrect results in jQuery 3.
+    // See https://github.com/twbs/bootstrap/issues/20280
+    var elOffset  = isBody ? { top: 0, left: 0 } : (isSvg ? null : $element.offset())
+    var scroll    = { scroll: isBody ? document.documentElement.scrollTop || document.body.scrollTop : $element.scrollTop() }
+    var outerDims = isBody ? { width: $(window).width(), height: $(window).height() } : null
+
+    return $.extend({}, elRect, scroll, outerDims, elOffset)
+  }
+
+  Tooltip.prototype.getCalculatedOffset = function (placement, pos, actualWidth, actualHeight) {
+    return placement == 'bottom' ? { top: pos.top + pos.height,   left: pos.left + pos.width / 2 - actualWidth / 2 } :
+           placement == 'top'    ? { top: pos.top - actualHeight, left: pos.left + pos.width / 2 - actualWidth / 2 } :
+           placement == 'left'   ? { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left - actualWidth } :
+        /* placement == 'right' */ { top: pos.top + pos.height / 2 - actualHeight / 2, left: pos.left + pos.width }
+
+  }
+
+  Tooltip.prototype.getViewportAdjustedDelta = function (placement, pos, actualWidth, actualHeight) {
+    var delta = { top: 0, left: 0 }
+    if (!this.$viewport) return delta
+
+    var viewportPadding = this.options.viewport && this.options.viewport.padding || 0
+    var viewportDimensions = this.getPosition(this.$viewport)
+
+    if (/right|left/.test(placement)) {
+      var topEdgeOffset    = pos.top - viewportPadding - viewportDimensions.scroll
+      var bottomEdgeOffset = pos.top + viewportPadding - viewportDimensions.scroll + actualHeight
+      if (topEdgeOffset < viewportDimensions.top) { // top overflow
+        delta.top = viewportDimensions.top - topEdgeOffset
+      } else if (bottomEdgeOffset > viewportDimensions.top + viewportDimensions.height) { // bottom overflow
+        delta.top = viewportDimensions.top + viewportDimensions.height - bottomEdgeOffset
+      }
+    } else {
+      var leftEdgeOffset  = pos.left - viewportPadding
+      var rightEdgeOffset = pos.left + viewportPadding + actualWidth
+      if (leftEdgeOffset < viewportDimensions.left) { // left overflow
+        delta.left = viewportDimensions.left - leftEdgeOffset
+      } else if (rightEdgeOffset > viewportDimensions.right) { // right overflow
+        delta.left = viewportDimensions.left + viewportDimensions.width - rightEdgeOffset
+      }
+    }
+
+    return delta
+  }
+
+  Tooltip.prototype.getTitle = function () {
+    var title
+    var $e = this.$element
+    var o  = this.options
+
+    title = $e.attr('data-original-title')
+      || (typeof o.title == 'function' ? o.title.call($e[0]) :  o.title)
+
+    return title
+  }
+
+  Tooltip.prototype.getUID = function (prefix) {
+    do prefix += ~~(Math.random() * 1000000)
+    while (document.getElementById(prefix))
+    return prefix
+  }
+
+  Tooltip.prototype.tip = function () {
+    if (!this.$tip) {
+      this.$tip = $(this.options.template)
+      if (this.$tip.length != 1) {
+        throw new Error(this.type + ' `template` option must consist of exactly 1 top-level element!')
+      }
+    }
+    return this.$tip
+  }
+
+  Tooltip.prototype.arrow = function () {
+    return (this.$arrow = this.$arrow || this.tip().find('.tooltip-arrow'))
+  }
+
+  Tooltip.prototype.enable = function () {
+    this.enabled = true
+  }
+
+  Tooltip.prototype.disable = function () {
+    this.enabled = false
+  }
+
+  Tooltip.prototype.toggleEnabled = function () {
+    this.enabled = !this.enabled
+  }
+
+  Tooltip.prototype.toggle = function (e) {
+    var self = this
+    if (e) {
+      self = $(e.currentTarget).data('bs.' + this.type)
+      if (!self) {
+        self = new this.constructor(e.currentTarget, this.getDelegateOptions())
+        $(e.currentTarget).data('bs.' + this.type, self)
+      }
+    }
+
+    if (e) {
+      self.inState.click = !self.inState.click
+      if (self.isInStateTrue()) self.enter(self)
+      else self.leave(self)
+    } else {
+      self.tip().hasClass('in') ? self.leave(self) : self.enter(self)
+    }
+  }
+
+  Tooltip.prototype.destroy = function () {
+    var that = this
+    clearTimeout(this.timeout)
+    this.hide(function () {
+      that.$element.off('.' + that.type).removeData('bs.' + that.type)
+      if (that.$tip) {
+        that.$tip.detach()
+      }
+      that.$tip = null
+      that.$arrow = null
+      that.$viewport = null
+      that.$element = null
+    })
+  }
+
+
+  // TOOLTIP PLUGIN DEFINITION
+  // =========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.tooltip')
+      var options = typeof option == 'object' && option
+
+      if (!data && /destroy|hide/.test(option)) return
+      if (!data) $this.data('bs.tooltip', (data = new Tooltip(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.tooltip
+
+  $.fn.tooltip             = Plugin
+  $.fn.tooltip.Constructor = Tooltip
+
+
+  // TOOLTIP NO CONFLICT
+  // ===================
+
+  $.fn.tooltip.noConflict = function () {
+    $.fn.tooltip = old
+    return this
+  }
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: popover.js v3.3.7
+ * http://getbootstrap.com/javascript/#popovers
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // POPOVER PUBLIC CLASS DEFINITION
+  // ===============================
+
+  var Popover = function (element, options) {
+    this.init('popover', element, options)
+  }
+
+  if (!$.fn.tooltip) throw new Error('Popover requires tooltip.js')
+
+  Popover.VERSION  = '3.3.7'
+
+  Popover.DEFAULTS = $.extend({}, $.fn.tooltip.Constructor.DEFAULTS, {
+    placement: 'right',
+    trigger: 'click',
+    content: '',
+    template: '<div class="popover" role="tooltip"><div class="arrow"></div><h3 class="popover-title"></h3><div class="popover-content"></div></div>'
+  })
+
+
+  // NOTE: POPOVER EXTENDS tooltip.js
+  // ================================
+
+  Popover.prototype = $.extend({}, $.fn.tooltip.Constructor.prototype)
+
+  Popover.prototype.constructor = Popover
+
+  Popover.prototype.getDefaults = function () {
+    return Popover.DEFAULTS
+  }
+
+  Popover.prototype.setContent = function () {
+    var $tip    = this.tip()
+    var title   = this.getTitle()
+    var content = this.getContent()
+
+    $tip.find('.popover-title')[this.options.html ? 'html' : 'text'](title)
+    $tip.find('.popover-content').children().detach().end()[ // we use append for html objects to maintain js events
+      this.options.html ? (typeof content == 'string' ? 'html' : 'append') : 'text'
+    ](content)
+
+    $tip.removeClass('fade top bottom left right in')
+
+    // IE8 doesn't accept hiding via the `:empty` pseudo selector, we have to do
+    // this manually by checking the contents.
+    if (!$tip.find('.popover-title').html()) $tip.find('.popover-title').hide()
+  }
+
+  Popover.prototype.hasContent = function () {
+    return this.getTitle() || this.getContent()
+  }
+
+  Popover.prototype.getContent = function () {
+    var $e = this.$element
+    var o  = this.options
+
+    return $e.attr('data-content')
+      || (typeof o.content == 'function' ?
+            o.content.call($e[0]) :
+            o.content)
+  }
+
+  Popover.prototype.arrow = function () {
+    return (this.$arrow = this.$arrow || this.tip().find('.arrow'))
+  }
+
+
+  // POPOVER PLUGIN DEFINITION
+  // =========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.popover')
+      var options = typeof option == 'object' && option
+
+      if (!data && /destroy|hide/.test(option)) return
+      if (!data) $this.data('bs.popover', (data = new Popover(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.popover
+
+  $.fn.popover             = Plugin
+  $.fn.popover.Constructor = Popover
+
+
+  // POPOVER NO CONFLICT
+  // ===================
+
+  $.fn.popover.noConflict = function () {
+    $.fn.popover = old
+    return this
+  }
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: scrollspy.js v3.3.7
+ * http://getbootstrap.com/javascript/#scrollspy
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // SCROLLSPY CLASS DEFINITION
+  // ==========================
+
+  function ScrollSpy(element, options) {
+    this.$body          = $(document.body)
+    this.$scrollElement = $(element).is(document.body) ? $(window) : $(element)
+    this.options        = $.extend({}, ScrollSpy.DEFAULTS, options)
+    this.selector       = (this.options.target || '') + ' .nav li > a'
+    this.offsets        = []
+    this.targets        = []
+    this.activeTarget   = null
+    this.scrollHeight   = 0
+
+    this.$scrollElement.on('scroll.bs.scrollspy', $.proxy(this.process, this))
+    this.refresh()
+    this.process()
+  }
+
+  ScrollSpy.VERSION  = '3.3.7'
+
+  ScrollSpy.DEFAULTS = {
+    offset: 10
+  }
+
+  ScrollSpy.prototype.getScrollHeight = function () {
+    return this.$scrollElement[0].scrollHeight || Math.max(this.$body[0].scrollHeight, document.documentElement.scrollHeight)
+  }
+
+  ScrollSpy.prototype.refresh = function () {
+    var that          = this
+    var offsetMethod  = 'offset'
+    var offsetBase    = 0
+
+    this.offsets      = []
+    this.targets      = []
+    this.scrollHeight = this.getScrollHeight()
+
+    if (!$.isWindow(this.$scrollElement[0])) {
+      offsetMethod = 'position'
+      offsetBase   = this.$scrollElement.scrollTop()
+    }
+
+    this.$body
+      .find(this.selector)
+      .map(function () {
+        var $el   = $(this)
+        var href  = $el.data('target') || $el.attr('href')
+        var $href = /^#./.test(href) && $(href)
+
+        return ($href
+          && $href.length
+          && $href.is(':visible')
+          && [[$href[offsetMethod]().top + offsetBase, href]]) || null
+      })
+      .sort(function (a, b) { return a[0] - b[0] })
+      .each(function () {
+        that.offsets.push(this[0])
+        that.targets.push(this[1])
+      })
+  }
+
+  ScrollSpy.prototype.process = function () {
+    var scrollTop    = this.$scrollElement.scrollTop() + this.options.offset
+    var scrollHeight = this.getScrollHeight()
+    var maxScroll    = this.options.offset + scrollHeight - this.$scrollElement.height()
+    var offsets      = this.offsets
+    var targets      = this.targets
+    var activeTarget = this.activeTarget
+    var i
+
+    if (this.scrollHeight != scrollHeight) {
+      this.refresh()
+    }
+
+    if (scrollTop >= maxScroll) {
+      return activeTarget != (i = targets[targets.length - 1]) && this.activate(i)
+    }
+
+    if (activeTarget && scrollTop < offsets[0]) {
+      this.activeTarget = null
+      return this.clear()
+    }
+
+    for (i = offsets.length; i--;) {
+      activeTarget != targets[i]
+        && scrollTop >= offsets[i]
+        && (offsets[i + 1] === undefined || scrollTop < offsets[i + 1])
+        && this.activate(targets[i])
+    }
+  }
+
+  ScrollSpy.prototype.activate = function (target) {
+    this.activeTarget = target
+
+    this.clear()
+
+    var selector = this.selector +
+      '[data-target="' + target + '"],' +
+      this.selector + '[href="' + target + '"]'
+
+    var active = $(selector)
+      .parents('li')
+      .addClass('active')
+
+    if (active.parent('.dropdown-menu').length) {
+      active = active
+        .closest('li.dropdown')
+        .addClass('active')
+    }
+
+    active.trigger('activate.bs.scrollspy')
+  }
+
+  ScrollSpy.prototype.clear = function () {
+    $(this.selector)
+      .parentsUntil(this.options.target, '.active')
+      .removeClass('active')
+  }
+
+
+  // SCROLLSPY PLUGIN DEFINITION
+  // ===========================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.scrollspy')
+      var options = typeof option == 'object' && option
+
+      if (!data) $this.data('bs.scrollspy', (data = new ScrollSpy(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.scrollspy
+
+  $.fn.scrollspy             = Plugin
+  $.fn.scrollspy.Constructor = ScrollSpy
+
+
+  // SCROLLSPY NO CONFLICT
+  // =====================
+
+  $.fn.scrollspy.noConflict = function () {
+    $.fn.scrollspy = old
+    return this
+  }
+
+
+  // SCROLLSPY DATA-API
+  // ==================
+
+  $(window).on('load.bs.scrollspy.data-api', function () {
+    $('[data-spy="scroll"]').each(function () {
+      var $spy = $(this)
+      Plugin.call($spy, $spy.data())
+    })
+  })
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: tab.js v3.3.7
+ * http://getbootstrap.com/javascript/#tabs
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // TAB CLASS DEFINITION
+  // ====================
+
+  var Tab = function (element) {
+    // jscs:disable requireDollarBeforejQueryAssignment
+    this.element = $(element)
+    // jscs:enable requireDollarBeforejQueryAssignment
+  }
+
+  Tab.VERSION = '3.3.7'
+
+  Tab.TRANSITION_DURATION = 150
+
+  Tab.prototype.show = function () {
+    var $this    = this.element
+    var $ul      = $this.closest('ul:not(.dropdown-menu)')
+    var selector = $this.data('target')
+
+    if (!selector) {
+      selector = $this.attr('href')
+      selector = selector && selector.replace(/.*(?=#[^\s]*$)/, '') // strip for ie7
+    }
+
+    if ($this.parent('li').hasClass('active')) return
+
+    var $previous = $ul.find('.active:last a')
+    var hideEvent = $.Event('hide.bs.tab', {
+      relatedTarget: $this[0]
+    })
+    var showEvent = $.Event('show.bs.tab', {
+      relatedTarget: $previous[0]
+    })
+
+    $previous.trigger(hideEvent)
+    $this.trigger(showEvent)
+
+    if (showEvent.isDefaultPrevented() || hideEvent.isDefaultPrevented()) return
+
+    var $target = $(selector)
+
+    this.activate($this.closest('li'), $ul)
+    this.activate($target, $target.parent(), function () {
+      $previous.trigger({
+        type: 'hidden.bs.tab',
+        relatedTarget: $this[0]
+      })
+      $this.trigger({
+        type: 'shown.bs.tab',
+        relatedTarget: $previous[0]
+      })
+    })
+  }
+
+  Tab.prototype.activate = function (element, container, callback) {
+    var $active    = container.find('> .active')
+    var transition = callback
+      && $.support.transition
+      && ($active.length && $active.hasClass('fade') || !!container.find('> .fade').length)
+
+    function next() {
+      $active
+        .removeClass('active')
+        .find('> .dropdown-menu > .active')
+          .removeClass('active')
+        .end()
+        .find('[data-toggle="tab"]')
+          .attr('aria-expanded', false)
+
+      element
+        .addClass('active')
+        .find('[data-toggle="tab"]')
+          .attr('aria-expanded', true)
+
+      if (transition) {
+        element[0].offsetWidth // reflow for transition
+        element.addClass('in')
+      } else {
+        element.removeClass('fade')
+      }
+
+      if (element.parent('.dropdown-menu').length) {
+        element
+          .closest('li.dropdown')
+            .addClass('active')
+          .end()
+          .find('[data-toggle="tab"]')
+            .attr('aria-expanded', true)
+      }
+
+      callback && callback()
+    }
+
+    $active.length && transition ?
+      $active
+        .one('bsTransitionEnd', next)
+        .emulateTransitionEnd(Tab.TRANSITION_DURATION) :
+      next()
+
+    $active.removeClass('in')
+  }
+
+
+  // TAB PLUGIN DEFINITION
+  // =====================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this = $(this)
+      var data  = $this.data('bs.tab')
+
+      if (!data) $this.data('bs.tab', (data = new Tab(this)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.tab
+
+  $.fn.tab             = Plugin
+  $.fn.tab.Constructor = Tab
+
+
+  // TAB NO CONFLICT
+  // ===============
+
+  $.fn.tab.noConflict = function () {
+    $.fn.tab = old
+    return this
+  }
+
+
+  // TAB DATA-API
+  // ============
+
+  var clickHandler = function (e) {
+    e.preventDefault()
+    Plugin.call($(this), 'show')
+  }
+
+  $(document)
+    .on('click.bs.tab.data-api', '[data-toggle="tab"]', clickHandler)
+    .on('click.bs.tab.data-api', '[data-toggle="pill"]', clickHandler)
+
+}(jQuery);
+
+/* ========================================================================
+ * Bootstrap: affix.js v3.3.7
+ * http://getbootstrap.com/javascript/#affix
+ * ========================================================================
+ * Copyright 2011-2016 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * ======================================================================== */
+
+
++function ($) {
+  'use strict';
+
+  // AFFIX CLASS DEFINITION
+  // ======================
+
+  var Affix = function (element, options) {
+    this.options = $.extend({}, Affix.DEFAULTS, options)
+
+    this.$target = $(this.options.target)
+      .on('scroll.bs.affix.data-api', $.proxy(this.checkPosition, this))
+      .on('click.bs.affix.data-api',  $.proxy(this.checkPositionWithEventLoop, this))
+
+    this.$element     = $(element)
+    this.affixed      = null
+    this.unpin        = null
+    this.pinnedOffset = null
+
+    this.checkPosition()
+  }
+
+  Affix.VERSION  = '3.3.7'
+
+  Affix.RESET    = 'affix affix-top affix-bottom'
+
+  Affix.DEFAULTS = {
+    offset: 0,
+    target: window
+  }
+
+  Affix.prototype.getState = function (scrollHeight, height, offsetTop, offsetBottom) {
+    var scrollTop    = this.$target.scrollTop()
+    var position     = this.$element.offset()
+    var targetHeight = this.$target.height()
+
+    if (offsetTop != null && this.affixed == 'top') return scrollTop < offsetTop ? 'top' : false
+
+    if (this.affixed == 'bottom') {
+      if (offsetTop != null) return (scrollTop + this.unpin <= position.top) ? false : 'bottom'
+      return (scrollTop + targetHeight <= scrollHeight - offsetBottom) ? false : 'bottom'
+    }
+
+    var initializing   = this.affixed == null
+    var colliderTop    = initializing ? scrollTop : position.top
+    var colliderHeight = initializing ? targetHeight : height
+
+    if (offsetTop != null && scrollTop <= offsetTop) return 'top'
+    if (offsetBottom != null && (colliderTop + colliderHeight >= scrollHeight - offsetBottom)) return 'bottom'
+
+    return false
+  }
+
+  Affix.prototype.getPinnedOffset = function () {
+    if (this.pinnedOffset) return this.pinnedOffset
+    this.$element.removeClass(Affix.RESET).addClass('affix')
+    var scrollTop = this.$target.scrollTop()
+    var position  = this.$element.offset()
+    return (this.pinnedOffset = position.top - scrollTop)
+  }
+
+  Affix.prototype.checkPositionWithEventLoop = function () {
+    setTimeout($.proxy(this.checkPosition, this), 1)
+  }
+
+  Affix.prototype.checkPosition = function () {
+    if (!this.$element.is(':visible')) return
+
+    var height       = this.$element.height()
+    var offset       = this.options.offset
+    var offsetTop    = offset.top
+    var offsetBottom = offset.bottom
+    var scrollHeight = Math.max($(document).height(), $(document.body).height())
+
+    if (typeof offset != 'object')         offsetBottom = offsetTop = offset
+    if (typeof offsetTop == 'function')    offsetTop    = offset.top(this.$element)
+    if (typeof offsetBottom == 'function') offsetBottom = offset.bottom(this.$element)
+
+    var affix = this.getState(scrollHeight, height, offsetTop, offsetBottom)
+
+    if (this.affixed != affix) {
+      if (this.unpin != null) this.$element.css('top', '')
+
+      var affixType = 'affix' + (affix ? '-' + affix : '')
+      var e         = $.Event(affixType + '.bs.affix')
+
+      this.$element.trigger(e)
+
+      if (e.isDefaultPrevented()) return
+
+      this.affixed = affix
+      this.unpin = affix == 'bottom' ? this.getPinnedOffset() : null
+
+      this.$element
+        .removeClass(Affix.RESET)
+        .addClass(affixType)
+        .trigger(affixType.replace('affix', 'affixed') + '.bs.affix')
+    }
+
+    if (affix == 'bottom') {
+      this.$element.offset({
+        top: scrollHeight - height - offsetBottom
+      })
+    }
+  }
+
+
+  // AFFIX PLUGIN DEFINITION
+  // =======================
+
+  function Plugin(option) {
+    return this.each(function () {
+      var $this   = $(this)
+      var data    = $this.data('bs.affix')
+      var options = typeof option == 'object' && option
+
+      if (!data) $this.data('bs.affix', (data = new Affix(this, options)))
+      if (typeof option == 'string') data[option]()
+    })
+  }
+
+  var old = $.fn.affix
+
+  $.fn.affix             = Plugin
+  $.fn.affix.Constructor = Affix
+
+
+  // AFFIX NO CONFLICT
+  // =================
+
+  $.fn.affix.noConflict = function () {
+    $.fn.affix = old
+    return this
+  }
+
+
+  // AFFIX DATA-API
+  // ==============
+
+  $(window).on('load', function () {
+    $('[data-spy="affix"]').each(function () {
+      var $spy = $(this)
+      var data = $spy.data()
+
+      data.offset = data.offset || {}
+
+      if (data.offsetBottom != null) data.offset.bottom = data.offsetBottom
+      if (data.offsetTop    != null) data.offset.top    = data.offsetTop
+
+      Plugin.call($spy, data)
+    })
+  })
+
+}(jQuery);
+</script>
+        <script>(function() {
+  'use strict';
+
+  /**
+   * Extend an Object with another Object's properties.
+   *
+   * The source objects are specified as additional arguments.
+   *
+   * @param dst Object the object to extend.
+   *
+   * @return Object the final object.
+   */
+  var _extend = function(dst) {
+    var sources = Array.prototype.slice.call(arguments, 1);
+    for (var i=0; i<sources.length; ++i) {
+      var src = sources[i];
+      for (var p in src) {
+        if (src.hasOwnProperty(p)) dst[p] = src[p];
+      }
+    }
+    return dst;
+  };
+
+
+  /**
+   * Defer execution of given function.
+   * @param  {Function} func
+   */
+  var _defer = function(func) {
+    if (typeof setImmediate === 'function') {
+      return setImmediate(func);
+    } else {
+      return setTimeout(func, 0);
+    }
+  };
+
+  /**
+   * Based on the algorithm at http://en.wikipedia.org/wiki/Levenshtein_distance.
+   */
+  var Levenshtein = {
+    /**
+     * Calculate levenshtein distance of the two strings.
+     *
+     * @param str1 String the first string.
+     * @param str2 String the second string.
+     * @return Integer the levenshtein distance (0 and above).
+     */
+    get: function(str1, str2) {
+      // base cases
+      if (str1 === str2) return 0;
+      if (str1.length === 0) return str2.length;
+      if (str2.length === 0) return str1.length;
+
+      // two rows
+      var prevRow  = new Array(str2.length + 1),
+          curCol, nextCol, i, j, tmp;
+
+      // initialise previous row
+      for (i=0; i<prevRow.length; ++i) {
+        prevRow[i] = i;
+      }
+
+      // calculate current row distance from previous row
+      for (i=0; i<str1.length; ++i) {
+        nextCol = i + 1;
+
+        for (j=0; j<str2.length; ++j) {
+          curCol = nextCol;
+
+          // substution
+          nextCol = prevRow[j] + ( (str1.charAt(i) === str2.charAt(j)) ? 0 : 1 );
+          // insertion
+          tmp = curCol + 1;
+          if (nextCol > tmp) {
+            nextCol = tmp;
+          }
+          // deletion
+          tmp = prevRow[j + 1] + 1;
+          if (nextCol > tmp) {
+            nextCol = tmp;
+          }
+
+          // copy current col value into previous (in preparation for next iteration)
+          prevRow[j] = curCol;
+        }
+
+        // copy last col value into previous (in preparation for next iteration)
+        prevRow[j] = nextCol;
+      }
+
+      return nextCol;
+    },
+
+    /**
+     * Asynchronously calculate levenshtein distance of the two strings.
+     *
+     * @param str1 String the first string.
+     * @param str2 String the second string.
+     * @param cb Function callback function with signature: function(Error err, int distance)
+     * @param [options] Object additional options.
+     * @param [options.progress] Function progress callback with signature: function(percentComplete)
+     */
+    getAsync: function(str1, str2, cb, options) {
+      options = _extend({}, {
+        progress: null
+      }, options);
+
+      // base cases
+      if (str1 === str2) return cb(null, 0);
+      if (str1.length === 0) return cb(null, str2.length);
+      if (str2.length === 0) return cb(null, str1.length);
+
+      // two rows
+      var prevRow  = new Array(str2.length + 1),
+          curCol, nextCol,
+          i, j, tmp,
+          startTime, currentTime;
+
+      // initialise previous row
+      for (i=0; i<prevRow.length; ++i) {
+        prevRow[i] = i;
+      }
+
+      nextCol = 1;
+      i = 0;
+      j = -1;
+
+      var __calculate = function() {
+        // reset timer
+        startTime = new Date().valueOf();
+        currentTime = startTime;
+
+        // keep going until one second has elapsed
+        while (currentTime - startTime < 1000) {
+          // reached end of current row?
+          if (str2.length <= (++j)) {
+            // copy current into previous (in preparation for next iteration)
+            prevRow[j] = nextCol;
+
+            // if already done all chars
+            if (str1.length <= (++i)) {
+              return cb(null, nextCol);
+            }
+            // else if we have more left to do
+            else {
+              nextCol = i + 1;
+              j = 0;
+            }
+          }
+
+          // calculation
+          curCol = nextCol;
+
+          // substution
+          nextCol = prevRow[j] + ( (str1.charAt(i) === str2.charAt(j)) ? 0 : 1 );
+          // insertion
+          tmp = curCol + 1;
+          if (nextCol > tmp) {
+            nextCol = tmp;
+          }
+          // deletion
+          tmp = prevRow[j + 1] + 1;
+          if (nextCol > tmp) {
+            nextCol = tmp;
+          }
+
+          // copy current into previous (in preparation for next iteration)
+          prevRow[j] = curCol;
+
+          // get current time
+          currentTime = new Date().valueOf();
+        }
+
+        // send a progress update?
+        if (null !== options.progress) {
+          try {
+            options.progress.call(null, (i * 100.0/ str1.length));
+          } catch (err) {
+            return cb('Progress callback: ' + err.toString());
+          }
+        }
+
+        // next iteration
+        _defer(__calculate);
+      };
+
+      __calculate();
+    }
+
+  };
+
+  // amd
+  if (typeof define !== "undefined" && define !== null && define.amd) {
+    define(function() {
+      return Levenshtein;
+    });
+  }
+  // commonjs
+  else if (typeof module !== "undefined" && module !== null && typeof exports !== "undefined" && module.exports === exports) {
+    module.exports = Levenshtein;
+  }
+  // web worker
+  else if (typeof self !== "undefined" && typeof self.postMessage === 'function' && typeof self.importScripts === 'function') {
+    self.Levenshtein = Levenshtein;
+  }
+  // browser main thread
+  else if (typeof window !== "undefined" && window !== null) {
+    window.Levenshtein = Levenshtein;
+  }
+}());
+
+</script>
+        <script>/*! kjua v0.1.1 - https://larsjung.de/kjua/ */
+!function(r,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.kjua=t():r.kjua=t()}(this,function(){return function(r){function t(n){if(e[n])return e[n].exports;var o=e[n]={exports:{},id:n,loaded:!1};return r[n].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var e={};return t.m=r,t.c=e,t.p="",t(0)}([function(r,t,e){"use strict";var n=e(1),o=n.createCanvas,i=n.canvasToImg,a=n.dpr,u=e(2),f=e(3),c=e(4);r.exports=function(r){var t=Object.assign({},u,r),e=f(t.text,t.ecLevel,t.minVersion,t.quiet),n=t.ratio||a,l=o(t.size,n),s=l.getContext("2d");return s.scale(n,n),c(e,s,t),"image"===t.render?i(l):l}},function(r,t){"use strict";var e=window,n=e.document,o=e.devicePixelRatio||1,i=function(r){return n.createElement(r)},a=function(r,t){return r.getAttribute(t)},u=function(r,t,e){return r.setAttribute(t,e)},f=function(r,t){var e=i("canvas");return 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+        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bitcoinjs = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+(function (global){
+'use strict';
+
+// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
+// original notice:
+
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+function compare(a, b) {
+  if (a === b) {
+    return 0;
+  }
+
+  var x = a.length;
+  var y = b.length;
+
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i];
+      y = b[i];
+      break;
+    }
+  }
+
+  if (x < y) {
+    return -1;
+  }
+  if (y < x) {
+    return 1;
+  }
+  return 0;
+}
+function isBuffer(b) {
+  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
+    return global.Buffer.isBuffer(b);
+  }
+  return !!(b != null && b._isBuffer);
+}
+
+// based on node assert, original notice:
+
+// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
+//
+// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
+//
+// Originally from narwhal.js (http://narwhaljs.org)
+// Copyright (c) 2009 Thomas Robinson <280north.com>
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the 'Software'), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+var util = require('util/');
+var hasOwn = Object.prototype.hasOwnProperty;
+var pSlice = Array.prototype.slice;
+var functionsHaveNames = (function () {
+  return function foo() {}.name === 'foo';
+}());
+function pToString (obj) {
+  return Object.prototype.toString.call(obj);
+}
+function isView(arrbuf) {
+  if (isBuffer(arrbuf)) {
+    return false;
+  }
+  if (typeof global.ArrayBuffer !== 'function') {
+    return false;
+  }
+  if (typeof ArrayBuffer.isView === 'function') {
+    return ArrayBuffer.isView(arrbuf);
+  }
+  if (!arrbuf) {
+    return false;
+  }
+  if (arrbuf instanceof DataView) {
+    return true;
+  }
+  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
+    return true;
+  }
+  return false;
+}
+// 1. The assert module provides functions that throw
+// AssertionError's when particular conditions are not met. The
+// assert module must conform to the following interface.
+
+var assert = module.exports = ok;
+
+// 2. The AssertionError is defined in assert.
+// new assert.AssertionError({ message: message,
+//                             actual: actual,
+//                             expected: expected })
+
+var regex = /\s*function\s+([^\(\s]*)\s*/;
+// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
+function getName(func) {
+  if (!util.isFunction(func)) {
+    return;
+  }
+  if (functionsHaveNames) {
+    return func.name;
+  }
+  var str = func.toString();
+  var match = str.match(regex);
+  return match && match[1];
+}
+assert.AssertionError = function AssertionError(options) {
+  this.name = 'AssertionError';
+  this.actual = options.actual;
+  this.expected = options.expected;
+  this.operator = options.operator;
+  if (options.message) {
+    this.message = options.message;
+    this.generatedMessage = false;
+  } else {
+    this.message = getMessage(this);
+    this.generatedMessage = true;
+  }
+  var stackStartFunction = options.stackStartFunction || fail;
+  if (Error.captureStackTrace) {
+    Error.captureStackTrace(this, stackStartFunction);
+  } else {
+    // non v8 browsers so we can have a stacktrace
+    var err = new Error();
+    if (err.stack) {
+      var out = err.stack;
+
+      // try to strip useless frames
+      var fn_name = getName(stackStartFunction);
+      var idx = out.indexOf('\n' + fn_name);
+      if (idx >= 0) {
+        // once we have located the function frame
+        // we need to strip out everything before it (and its line)
+        var next_line = out.indexOf('\n', idx + 1);
+        out = out.substring(next_line + 1);
+      }
+
+      this.stack = out;
+    }
+  }
+};
+
+// assert.AssertionError instanceof Error
+util.inherits(assert.AssertionError, Error);
+
+function truncate(s, n) {
+  if (typeof s === 'string') {
+    return s.length < n ? s : s.slice(0, n);
+  } else {
+    return s;
+  }
+}
+function inspect(something) {
+  if (functionsHaveNames || !util.isFunction(something)) {
+    return util.inspect(something);
+  }
+  var rawname = getName(something);
+  var name = rawname ? ': ' + rawname : '';
+  return '[Function' +  name + ']';
+}
+function getMessage(self) {
+  return truncate(inspect(self.actual), 128) + ' ' +
+         self.operator + ' ' +
+         truncate(inspect(self.expected), 128);
+}
+
+// At present only the three keys mentioned above are used and
+// understood by the spec. Implementations or sub modules can pass
+// other keys to the AssertionError's constructor - they will be
+// ignored.
+
+// 3. All of the following functions must throw an AssertionError
+// when a corresponding condition is not met, with a message that
+// may be undefined if not provided.  All assertion methods provide
+// both the actual and expected values to the assertion error for
+// display purposes.
+
+function fail(actual, expected, message, operator, stackStartFunction) {
+  throw new assert.AssertionError({
+    message: message,
+    actual: actual,
+    expected: expected,
+    operator: operator,
+    stackStartFunction: stackStartFunction
+  });
+}
+
+// EXTENSION! allows for well behaved errors defined elsewhere.
+assert.fail = fail;
+
+// 4. Pure assertion tests whether a value is truthy, as determined
+// by !!guard.
+// assert.ok(guard, message_opt);
+// This statement is equivalent to assert.equal(true, !!guard,
+// message_opt);. To test strictly for the value true, use
+// assert.strictEqual(true, guard, message_opt);.
+
+function ok(value, message) {
+  if (!value) fail(value, true, message, '==', assert.ok);
+}
+assert.ok = ok;
+
+// 5. The equality assertion tests shallow, coercive equality with
+// ==.
+// assert.equal(actual, expected, message_opt);
+
+assert.equal = function equal(actual, expected, message) {
+  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
+};
+
+// 6. The non-equality assertion tests for whether two objects are not equal
+// with != assert.notEqual(actual, expected, message_opt);
+
+assert.notEqual = function notEqual(actual, expected, message) {
+  if (actual == expected) {
+    fail(actual, expected, message, '!=', assert.notEqual);
+  }
+};
+
+// 7. The equivalence assertion tests a deep equality relation.
+// assert.deepEqual(actual, expected, message_opt);
+
+assert.deepEqual = function deepEqual(actual, expected, message) {
+  if (!_deepEqual(actual, expected, false)) {
+    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
+  }
+};
+
+assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
+  if (!_deepEqual(actual, expected, true)) {
+    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
+  }
+};
+
+function _deepEqual(actual, expected, strict, memos) {
+  // 7.1. All identical values are equivalent, as determined by ===.
+  if (actual === expected) {
+    return true;
+  } else if (isBuffer(actual) && isBuffer(expected)) {
+    return compare(actual, expected) === 0;
+
+  // 7.2. If the expected value is a Date object, the actual value is
+  // equivalent if it is also a Date object that refers to the same time.
+  } else if (util.isDate(actual) && util.isDate(expected)) {
+    return actual.getTime() === expected.getTime();
+
+  // 7.3 If the expected value is a RegExp object, the actual value is
+  // equivalent if it is also a RegExp object with the same source and
+  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
+  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
+    return actual.source === expected.source &&
+           actual.global === expected.global &&
+           actual.multiline === expected.multiline &&
+           actual.lastIndex === expected.lastIndex &&
+           actual.ignoreCase === expected.ignoreCase;
+
+  // 7.4. Other pairs that do not both pass typeof value == 'object',
+  // equivalence is determined by ==.
+  } else if ((actual === null || typeof actual !== 'object') &&
+             (expected === null || typeof expected !== 'object')) {
+    return strict ? actual === expected : actual == expected;
+
+  // If both values are instances of typed arrays, wrap their underlying
+  // ArrayBuffers in a Buffer each to increase performance
+  // This optimization requires the arrays to have the same type as checked by
+  // Object.prototype.toString (aka pToString). Never perform binary
+  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
+  // bit patterns are not identical.
+  } else if (isView(actual) && isView(expected) &&
+             pToString(actual) === pToString(expected) &&
+             !(actual instanceof Float32Array ||
+               actual instanceof Float64Array)) {
+    return compare(new Uint8Array(actual.buffer),
+                   new Uint8Array(expected.buffer)) === 0;
+
+  // 7.5 For all other Object pairs, including Array objects, equivalence is
+  // determined by having the same number of owned properties (as verified
+  // with Object.prototype.hasOwnProperty.call), the same set of keys
+  // (although not necessarily the same order), equivalent values for every
+  // corresponding key, and an identical 'prototype' property. Note: this
+  // accounts for both named and indexed properties on Arrays.
+  } else if (isBuffer(actual) !== isBuffer(expected)) {
+    return false;
+  } else {
+    memos = memos || {actual: [], expected: []};
+
+    var actualIndex = memos.actual.indexOf(actual);
+    if (actualIndex !== -1) {
+      if (actualIndex === memos.expected.indexOf(expected)) {
+        return true;
+      }
+    }
+
+    memos.actual.push(actual);
+    memos.expected.push(expected);
+
+    return objEquiv(actual, expected, strict, memos);
+  }
+}
+
+function isArguments(object) {
+  return Object.prototype.toString.call(object) == '[object Arguments]';
+}
+
+function objEquiv(a, b, strict, actualVisitedObjects) {
+  if (a === null || a === undefined || b === null || b === undefined)
+    return false;
+  // if one is a primitive, the other must be same
+  if (util.isPrimitive(a) || util.isPrimitive(b))
+    return a === b;
+  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
+    return false;
+  var aIsArgs = isArguments(a);
+  var bIsArgs = isArguments(b);
+  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
+    return false;
+  if (aIsArgs) {
+    a = pSlice.call(a);
+    b = pSlice.call(b);
+    return _deepEqual(a, b, strict);
+  }
+  var ka = objectKeys(a);
+  var kb = objectKeys(b);
+  var key, i;
+  // having the same number of owned properties (keys incorporates
+  // hasOwnProperty)
+  if (ka.length !== kb.length)
+    return false;
+  //the same set of keys (although not necessarily the same order),
+  ka.sort();
+  kb.sort();
+  //~~~cheap key test
+  for (i = ka.length - 1; i >= 0; i--) {
+    if (ka[i] !== kb[i])
+      return false;
+  }
+  //equivalent values for every corresponding key, and
+  //~~~possibly expensive deep test
+  for (i = ka.length - 1; i >= 0; i--) {
+    key = ka[i];
+    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
+      return false;
+  }
+  return true;
+}
+
+// 8. The non-equivalence assertion tests for any deep inequality.
+// assert.notDeepEqual(actual, expected, message_opt);
+
+assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
+  if (_deepEqual(actual, expected, false)) {
+    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
+  }
+};
+
+assert.notDeepStrictEqual = notDeepStrictEqual;
+function notDeepStrictEqual(actual, expected, message) {
+  if (_deepEqual(actual, expected, true)) {
+    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
+  }
+}
+
+
+// 9. The strict equality assertion tests strict equality, as determined by ===.
+// assert.strictEqual(actual, expected, message_opt);
+
+assert.strictEqual = function strictEqual(actual, expected, message) {
+  if (actual !== expected) {
+    fail(actual, expected, message, '===', assert.strictEqual);
+  }
+};
+
+// 10. The strict non-equality assertion tests for strict inequality, as
+// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
+
+assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
+  if (actual === expected) {
+    fail(actual, expected, message, '!==', assert.notStrictEqual);
+  }
+};
+
+function expectedException(actual, expected) {
+  if (!actual || !expected) {
+    return false;
+  }
+
+  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
+    return expected.test(actual);
+  }
+
+  try {
+    if (actual instanceof expected) {
+      return true;
+    }
+  } catch (e) {
+    // Ignore.  The instanceof check doesn't work for arrow functions.
+  }
+
+  if (Error.isPrototypeOf(expected)) {
+    return false;
+  }
+
+  return expected.call({}, actual) === true;
+}
+
+function _tryBlock(block) {
+  var error;
+  try {
+    block();
+  } catch (e) {
+    error = e;
+  }
+  return error;
+}
+
+function _throws(shouldThrow, block, expected, message) {
+  var actual;
+
+  if (typeof block !== 'function') {
+    throw new TypeError('"block" argument must be a function');
+  }
+
+  if (typeof expected === 'string') {
+    message = expected;
+    expected = null;
+  }
+
+  actual = _tryBlock(block);
+
+  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
+            (message ? ' ' + message : '.');
+
+  if (shouldThrow && !actual) {
+    fail(actual, expected, 'Missing expected exception' + message);
+  }
+
+  var userProvidedMessage = typeof message === 'string';
+  var isUnwantedException = !shouldThrow && util.isError(actual);
+  var isUnexpectedException = !shouldThrow && actual && !expected;
+
+  if ((isUnwantedException &&
+      userProvidedMessage &&
+      expectedException(actual, expected)) ||
+      isUnexpectedException) {
+    fail(actual, expected, 'Got unwanted exception' + message);
+  }
+
+  if ((shouldThrow && actual && expected &&
+      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
+    throw actual;
+  }
+}
+
+// 11. Expected to throw an error:
+// assert.throws(block, Error_opt, message_opt);
+
+assert.throws = function(block, /*optional*/error, /*optional*/message) {
+  _throws(true, block, error, message);
+};
+
+// EXTENSION! This is annoying to write outside this module.
+assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
+  _throws(false, block, error, message);
+};
+
+assert.ifError = function(err) { if (err) throw err; };
+
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) {
+    if (hasOwn.call(obj, key)) keys.push(key);
+  }
+  return keys;
+};
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"util/":33}],2:[function(require,module,exports){
+'use strict'
+
+exports.byteLength = byteLength
+exports.toByteArray = toByteArray
+exports.fromByteArray = fromByteArray
+
+var lookup = []
+var revLookup = []
+var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+
+var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
+for (var i = 0, len = code.length; i < len; ++i) {
+  lookup[i] = code[i]
+  revLookup[code.charCodeAt(i)] = i
+}
+
+revLookup['-'.charCodeAt(0)] = 62
+revLookup['_'.charCodeAt(0)] = 63
+
+function placeHoldersCount (b64) {
+  var len = b64.length
+  if (len % 4 > 0) {
+    throw new Error('Invalid string. Length must be a multiple of 4')
+  }
+
+  // the number of equal signs (place holders)
+  // if there are two placeholders, than the two characters before it
+  // represent one byte
+  // if there is only one, then the three characters before it represent 2 bytes
+  // this is just a cheap hack to not do indexOf twice
+  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+}
+
+function byteLength (b64) {
+  // base64 is 4/3 + up to two characters of the original data
+  return b64.length * 3 / 4 - placeHoldersCount(b64)
+}
+
+function toByteArray (b64) {
+  var i, j, l, tmp, placeHolders, arr
+  var len = b64.length
+  placeHolders = placeHoldersCount(b64)
+
+  arr = new Arr(len * 3 / 4 - placeHolders)
+
+  // if there are placeholders, only get up to the last complete 4 chars
+  l = placeHolders > 0 ? len - 4 : len
+
+  var L = 0
+
+  for (i = 0, j = 0; i < l; i += 4, j += 3) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
+    arr[L++] = (tmp >> 16) & 0xFF
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  if (placeHolders === 2) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
+    arr[L++] = tmp & 0xFF
+  } else if (placeHolders === 1) {
+    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
+    arr[L++] = (tmp >> 8) & 0xFF
+    arr[L++] = tmp & 0xFF
+  }
+
+  return arr
+}
+
+function tripletToBase64 (num) {
+  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+}
+
+function encodeChunk (uint8, start, end) {
+  var tmp
+  var output = []
+  for (var i = start; i < end; i += 3) {
+    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
+    output.push(tripletToBase64(tmp))
+  }
+  return output.join('')
+}
+
+function fromByteArray (uint8) {
+  var tmp
+  var len = uint8.length
+  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
+  var output = ''
+  var parts = []
+  var maxChunkLength = 16383 // must be multiple of 3
+
+  // go through the array every three bytes, we'll deal with trailing stuff later
+  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
+    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+  }
+
+  // pad the end with zeros, but make sure to not forget the extra bytes
+  if (extraBytes === 1) {
+    tmp = uint8[len - 1]
+    output += lookup[tmp >> 2]
+    output += lookup[(tmp << 4) & 0x3F]
+    output += '=='
+  } else if (extraBytes === 2) {
+    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
+    output += lookup[tmp >> 10]
+    output += lookup[(tmp >> 4) & 0x3F]
+    output += lookup[(tmp << 2) & 0x3F]
+    output += '='
+  }
+
+  parts.push(output)
+
+  return parts.join('')
+}
+
+},{}],3:[function(require,module,exports){
+
+},{}],4:[function(require,module,exports){
+(function (global){
+'use strict';
+
+var buffer = require('buffer');
+var Buffer = buffer.Buffer;
+var SlowBuffer = buffer.SlowBuffer;
+var MAX_LEN = buffer.kMaxLength || 2147483647;
+exports.alloc = function alloc(size, fill, encoding) {
+  if (typeof Buffer.alloc === 'function') {
+    return Buffer.alloc(size, fill, encoding);
+  }
+  if (typeof encoding === 'number') {
+    throw new TypeError('encoding must not be number');
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size > MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  var enc = encoding;
+  var _fill = fill;
+  if (_fill === undefined) {
+    enc = undefined;
+    _fill = 0;
+  }
+  var buf = new Buffer(size);
+  if (typeof _fill === 'string') {
+    var fillBuf = new Buffer(_fill, enc);
+    var flen = fillBuf.length;
+    var i = -1;
+    while (++i < size) {
+      buf[i] = fillBuf[i % flen];
+    }
+  } else {
+    buf.fill(_fill);
+  }
+  return buf;
+}
+exports.allocUnsafe = function allocUnsafe(size) {
+  if (typeof Buffer.allocUnsafe === 'function') {
+    return Buffer.allocUnsafe(size);
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size > MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  return new Buffer(size);
+}
+exports.from = function from(value, encodingOrOffset, length) {
+  if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) {
+    return Buffer.from(value, encodingOrOffset, length);
+  }
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number');
+  }
+  if (typeof value === 'string') {
+    return new Buffer(value, encodingOrOffset);
+  }
+  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
+    var offset = encodingOrOffset;
+    if (arguments.length === 1) {
+      return new Buffer(value);
+    }
+    if (typeof offset === 'undefined') {
+      offset = 0;
+    }
+    var len = length;
+    if (typeof len === 'undefined') {
+      len = value.byteLength - offset;
+    }
+    if (offset >= value.byteLength) {
+      throw new RangeError('\'offset\' is out of bounds');
+    }
+    if (len > value.byteLength - offset) {
+      throw new RangeError('\'length\' is out of bounds');
+    }
+    return new Buffer(value.slice(offset, offset + len));
+  }
+  if (Buffer.isBuffer(value)) {
+    var out = new Buffer(value.length);
+    value.copy(out, 0, 0, value.length);
+    return out;
+  }
+  if (value) {
+    if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) {
+      return new Buffer(value);
+    }
+    if (value.type === 'Buffer' && Array.isArray(value.data)) {
+      return new Buffer(value.data);
+    }
+  }
+
+  throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.');
+}
+exports.allocUnsafeSlow = function allocUnsafeSlow(size) {
+  if (typeof Buffer.allocUnsafeSlow === 'function') {
+    return Buffer.allocUnsafeSlow(size);
+  }
+  if (typeof size !== 'number') {
+    throw new TypeError('size must be a number');
+  }
+  if (size >= MAX_LEN) {
+    throw new RangeError('size is too large');
+  }
+  return new SlowBuffer(size);
+}
+
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"buffer":5}],5:[function(require,module,exports){
+/*!
+ * The buffer module from node.js, for the browser.
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
+/* eslint-disable no-proto */
+
+'use strict'
+
+var base64 = require('base64-js')
+var ieee754 = require('ieee754')
+
+exports.Buffer = Buffer
+exports.SlowBuffer = SlowBuffer
+exports.INSPECT_MAX_BYTES = 50
+
+var K_MAX_LENGTH = 0x7fffffff
+exports.kMaxLength = K_MAX_LENGTH
+
+/**
+ * If `Buffer.TYPED_ARRAY_SUPPORT`:
+ *   === true    Use Uint8Array implementation (fastest)
+ *   === false   Print warning and recommend using `buffer` v4.x which has an Object
+ *               implementation (most compatible, even IE6)
+ *
+ * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
+ * Opera 11.6+, iOS 4.2+.
+ *
+ * We report that the browser does not support typed arrays if the are not subclassable
+ * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
+ * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
+ * for __proto__ and has a buggy typed array implementation.
+ */
+Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+
+if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
+    typeof console.error === 'function') {
+  console.error(
+    'This browser lacks typed array (Uint8Array) support which is required by ' +
+    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
+  )
+}
+
+function typedArraySupport () {
+  // Can typed array instances can be augmented?
+  try {
+    var arr = new Uint8Array(1)
+    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
+    return arr.foo() === 42
+  } catch (e) {
+    return false
+  }
+}
+
+function createBuffer (length) {
+  if (length > K_MAX_LENGTH) {
+    throw new RangeError('Invalid typed array length')
+  }
+  // Return an augmented `Uint8Array` instance
+  var buf = new Uint8Array(length)
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+/**
+ * The Buffer constructor returns instances of `Uint8Array` that have their
+ * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
+ * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
+ * and the `Uint8Array` methods. Square bracket notation works as expected -- it
+ * returns a single octet.
+ *
+ * The `Uint8Array` prototype remains unmodified.
+ */
+
+function Buffer (arg, encodingOrOffset, length) {
+  // Common case.
+  if (typeof arg === 'number') {
+    if (typeof encodingOrOffset === 'string') {
+      throw new Error(
+        'If encoding is specified then the first argument must be a string'
+      )
+    }
+    return allocUnsafe(arg)
+  }
+  return from(arg, encodingOrOffset, length)
+}
+
+// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
+if (typeof Symbol !== 'undefined' && Symbol.species &&
+    Buffer[Symbol.species] === Buffer) {
+  Object.defineProperty(Buffer, Symbol.species, {
+    value: null,
+    configurable: true,
+    enumerable: false,
+    writable: false
+  })
+}
+
+Buffer.poolSize = 8192 // not used by this implementation
+
+function from (value, encodingOrOffset, length) {
+  if (typeof value === 'number') {
+    throw new TypeError('"value" argument must not be a number')
+  }
+
+  if (value instanceof ArrayBuffer) {
+    return fromArrayBuffer(value, encodingOrOffset, length)
+  }
+
+  if (typeof value === 'string') {
+    return fromString(value, encodingOrOffset)
+  }
+
+  return fromObject(value)
+}
+
+/**
+ * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
+ * if value is a number.
+ * Buffer.from(str[, encoding])
+ * Buffer.from(array)
+ * Buffer.from(buffer)
+ * Buffer.from(arrayBuffer[, byteOffset[, length]])
+ **/
+Buffer.from = function (value, encodingOrOffset, length) {
+  return from(value, encodingOrOffset, length)
+}
+
+// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
+// https://github.com/feross/buffer/pull/148
+Buffer.prototype.__proto__ = Uint8Array.prototype
+Buffer.__proto__ = Uint8Array
+
+function assertSize (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('"size" argument must be a number')
+  } else if (size < 0) {
+    throw new RangeError('"size" argument must not be negative')
+  }
+}
+
+function alloc (size, fill, encoding) {
+  assertSize(size)
+  if (size <= 0) {
+    return createBuffer(size)
+  }
+  if (fill !== undefined) {
+    // Only pay attention to encoding if it's a string. This
+    // prevents accidentally sending in a number that would
+    // be interpretted as a start offset.
+    return typeof encoding === 'string'
+      ? createBuffer(size).fill(fill, encoding)
+      : createBuffer(size).fill(fill)
+  }
+  return createBuffer(size)
+}
+
+/**
+ * Creates a new filled Buffer instance.
+ * alloc(size[, fill[, encoding]])
+ **/
+Buffer.alloc = function (size, fill, encoding) {
+  return alloc(size, fill, encoding)
+}
+
+function allocUnsafe (size) {
+  assertSize(size)
+  return createBuffer(size < 0 ? 0 : checked(size) | 0)
+}
+
+/**
+ * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
+ * */
+Buffer.allocUnsafe = function (size) {
+  return allocUnsafe(size)
+}
+/**
+ * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
+ */
+Buffer.allocUnsafeSlow = function (size) {
+  return allocUnsafe(size)
+}
+
+function fromString (string, encoding) {
+  if (typeof encoding !== 'string' || encoding === '') {
+    encoding = 'utf8'
+  }
+
+  if (!Buffer.isEncoding(encoding)) {
+    throw new TypeError('"encoding" must be a valid string encoding')
+  }
+
+  var length = byteLength(string, encoding) | 0
+  var buf = createBuffer(length)
+
+  var actual = buf.write(string, encoding)
+
+  if (actual !== length) {
+    // Writing a hex string, for example, that contains invalid characters will
+    // cause everything after the first invalid character to be ignored. (e.g.
+    // 'abxxcd' will be treated as 'ab')
+    buf = buf.slice(0, actual)
+  }
+
+  return buf
+}
+
+function fromArrayLike (array) {
+  var length = array.length < 0 ? 0 : checked(array.length) | 0
+  var buf = createBuffer(length)
+  for (var i = 0; i < length; i += 1) {
+    buf[i] = array[i] & 255
+  }
+  return buf
+}
+
+function fromArrayBuffer (array, byteOffset, length) {
+  if (byteOffset < 0 || array.byteLength < byteOffset) {
+    throw new RangeError('\'offset\' is out of bounds')
+  }
+
+  if (array.byteLength < byteOffset + (length || 0)) {
+    throw new RangeError('\'length\' is out of bounds')
+  }
+
+  var buf
+  if (byteOffset === undefined && length === undefined) {
+    buf = new Uint8Array(array)
+  } else if (length === undefined) {
+    buf = new Uint8Array(array, byteOffset)
+  } else {
+    buf = new Uint8Array(array, byteOffset, length)
+  }
+
+  // Return an augmented `Uint8Array` instance
+  buf.__proto__ = Buffer.prototype
+  return buf
+}
+
+function fromObject (obj) {
+  if (Buffer.isBuffer(obj)) {
+    var len = checked(obj.length) | 0
+    var buf = createBuffer(len)
+
+    if (buf.length === 0) {
+      return buf
+    }
+
+    obj.copy(buf, 0, 0, len)
+    return buf
+  }
+
+  if (obj) {
+    if (isArrayBufferView(obj) || 'length' in obj) {
+      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
+        return createBuffer(0)
+      }
+      return fromArrayLike(obj)
+    }
+
+    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
+      return fromArrayLike(obj.data)
+    }
+  }
+
+  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
+}
+
+function checked (length) {
+  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
+  // length is NaN (which is otherwise coerced to zero.)
+  if (length >= K_MAX_LENGTH) {
+    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
+                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
+  }
+  return length | 0
+}
+
+function SlowBuffer (length) {
+  if (+length != length) { // eslint-disable-line eqeqeq
+    length = 0
+  }
+  return Buffer.alloc(+length)
+}
+
+Buffer.isBuffer = function isBuffer (b) {
+  return b != null && b._isBuffer === true
+}
+
+Buffer.compare = function compare (a, b) {
+  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
+    throw new TypeError('Arguments must be Buffers')
+  }
+
+  if (a === b) return 0
+
+  var x = a.length
+  var y = b.length
+
+  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
+    if (a[i] !== b[i]) {
+      x = a[i]
+      y = b[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+Buffer.isEncoding = function isEncoding (encoding) {
+  switch (String(encoding).toLowerCase()) {
+    case 'hex':
+    case 'utf8':
+    case 'utf-8':
+    case 'ascii':
+    case 'latin1':
+    case 'binary':
+    case 'base64':
+    case 'ucs2':
+    case 'ucs-2':
+    case 'utf16le':
+    case 'utf-16le':
+      return true
+    default:
+      return false
+  }
+}
+
+Buffer.concat = function concat (list, length) {
+  if (!Array.isArray(list)) {
+    throw new TypeError('"list" argument must be an Array of Buffers')
+  }
 
-            <div class="row">
-                <div class="col-md-12">
-                    <h2>More info</h2>
-                    <h3>BIP39 <span class="small">Mnemonic code for generating deterministic keys</span></h3>
-                    <p>
-                        Read more at the
-                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki">official BIP39 spec</a>
-                    </p>
-                    <h3>BIP32 <span class="small">Hierarchical Deterministic Wallets</span></h3>
-                    <p>
-                        Read more at the
-                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki" target="_blank">official BIP32 spec</a>
-                    </p>
-                    <p>
-                        See the demo at
-                        <a href="http://bip32.org/" target="_blank">bip32.org</a>
-                    </p>
-                    <h3>BIP44 <span class="small">Multi-Account Hierarchy for Deterministic Wallets</span></h3>
-                    <p>
-                        Read more at the
-                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki" target="_blank">official BIP44 spec</a>
-                    </p>
-                    <h3>BIP49 <span class="small">Derivation scheme for P2WPKH-nested-in-P2SH based accounts</span></h3>
-                    <p>
-                        Read more at the
-                        <a href="https://github.com/bitcoin/bips/blob/master/bip-0049.mediawiki" target="_blank">official BIP49 spec</a>
-                    </p>
-                    <h3>Private Keys</h3>
-                    <p>
-                        <span>
-                            Use private keys at
-                            <a href="https://web.archive.org/web/20150707020924/https://brainwallet.org/" target="_blank">brainwallet.org</a>.
-                        </span>
-                        <span>Be careful - it can be easy to make mistakes if you don't know what you're doing.</span>
-                    </p>
-                    <h3 id="entropy-notes">Entropy</h3>
-                    <p>
-                        <span>
-                            Entropy values must be sourced from a
-                            <a href="https://en.wikipedia.org/wiki/Random_number_generation" target="_blank">strong source of randomness</a>.
-                        </span>
-                        <span>This means flipping a fair coin, rolling a fair dice, noise measurements etc.</span>
-                        <span>
-                            Do <strong>NOT</strong> use phrases from books, lyrics from songs, your birthday or steet address,
-                            keyboard mashing, or anything you <i>think</i> is random, because chances are overwhelming it isn't
-                            random enough for the needs of this tool.
-                        </span>
-                    </p>
-                    <p>
-                        <strong><span>Do not store entropy.</span></strong>
-                    </p>
-                    <p>
-                        <span>Storing entropy (such as keeping a deck of cards in a specific shuffled order) is unreliable compared to storing a mnemonic.</span>
-                        <span>Instead of storing entropy, store the mnemonic generated from the entropy.</span>
-                        <span><a href="https://en.wikipedia.org/wiki/Steganography#Physical" target="_blank">Steganography</a> may be beneficial when storing the mnemonic.</span>
-                    </p>
-                    <p>
-                        <span>
-                            The random mnemonic generator on this page uses a
-                            <a href="https://developer.mozilla.org/en-US/docs/Web/API/RandomSource/getRandomValues" target="_blank">cryptographically secure random number generator</a>.
-                        </span>
-                        <span>The built in random generator can generally be trusted more than your own intuition about randomness.</span>
-                        <span>If cryptographic randomness isn't available in your browser, this page will show a warning and the generate button will not work.</span>
-                        <span>In that case you might choose to use your own source of entropy.</span>
-                    </p>
-                    <p>
-                        <a href="https://bitcointalk.org/index.php?topic=311000.msg3345309#msg3345309" target="_blank">You are not a good source of entropy.</a>
-                    </p>
-                    <h3>License</h3>
-                    <p>
-                    <span>Please refer to <a href="https://github.com/iancoleman/bip39/blob/master/LICENSE" target="_blank">the software license</a> for more detail.
-                    </span>
-                    </p>
-                    <p>The software is provided "as is", without warranty of any kind, express or implied, including but not limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In no event shall the authors or copyright holders be liable for any claim, damages or other liability, whether in an action of contract, tort or otherwise, arising from, out of or in connection with the software or the use or other dealings in the software.</p>
-                </div>
-            </div>
+  if (list.length === 0) {
+    return Buffer.alloc(0)
+  }
 
-            <hr>
+  var i
+  if (length === undefined) {
+    length = 0
+    for (i = 0; i < list.length; ++i) {
+      length += list[i].length
+    }
+  }
 
-            <div class="row">
-                <div class="col-md-12">
-                    <h2>Alternative Tools</h2>
-                    <p>This tool is interoperable with any BIP39 wallet.</p>
-                    <p>Some similar tools to this one (ie not consumer wallets) are</p>
-                    <p>
-                        <a href="https://bip32jp.github.io/english/">
-                            https://bip32jp.github.io/english/
-                        </a>
-                    </p>
-                </div>
-            </div>
+  var buffer = Buffer.allocUnsafe(length)
+  var pos = 0
+  for (i = 0; i < list.length; ++i) {
+    var buf = list[i]
+    if (!Buffer.isBuffer(buf)) {
+      throw new TypeError('"list" argument must be an Array of Buffers')
+    }
+    buf.copy(buffer, pos)
+    pos += buf.length
+  }
+  return buffer
+}
 
-            <hr>
+function byteLength (string, encoding) {
+  if (Buffer.isBuffer(string)) {
+    return string.length
+  }
+  if (isArrayBufferView(string) || string instanceof ArrayBuffer) {
+    return string.byteLength
+  }
+  if (typeof string !== 'string') {
+    string = '' + string
+  }
 
-            <div class="row">
-                <div class="col-md-12">
+  var len = string.length
+  if (len === 0) return 0
 
-                    <h2>Offline Usage</h2>
+  // Use a for loop to avoid recursion
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'ascii':
+      case 'latin1':
+      case 'binary':
+        return len
+      case 'utf8':
+      case 'utf-8':
+      case undefined:
+        return utf8ToBytes(string).length
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return len * 2
+      case 'hex':
+        return len >>> 1
+      case 'base64':
+        return base64ToBytes(string).length
+      default:
+        if (loweredCase) return utf8ToBytes(string).length // assume utf8
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+Buffer.byteLength = byteLength
 
-                    <p>
-                    You can use this tool without having to be online.
-                    </p>
-                    <p>
-                    In your browser, select file save-as, and save this page
-                    as a file.
-                    </p>
-                    <p>
-                    Double-click that file to open it in a browser
-                    on any offline computer.
-                    </p>
-                    <p>
-                    <span>Alternatively, download the file from the repository</span>
-                    -
-                    <a href="https://github.com/iancoleman/bip39">https://github.com/iancoleman/bip39</a>
-                    </p>
+function slowToString (encoding, start, end) {
+  var loweredCase = false
 
-                </div>
-            </div>
+  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
+  // property of a typed array.
+
+  // This behaves neither like String nor Uint8Array in that we set start/end
+  // to their upper/lower bounds if the value passed is out of range.
+  // undefined is handled specially as per ECMA-262 6th Edition,
+  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
+  if (start === undefined || start < 0) {
+    start = 0
+  }
+  // Return early if start > this.length. Done here to prevent potential uint32
+  // coercion fail below.
+  if (start > this.length) {
+    return ''
+  }
+
+  if (end === undefined || end > this.length) {
+    end = this.length
+  }
+
+  if (end <= 0) {
+    return ''
+  }
+
+  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
+  end >>>= 0
+  start >>>= 0
+
+  if (end <= start) {
+    return ''
+  }
+
+  if (!encoding) encoding = 'utf8'
+
+  while (true) {
+    switch (encoding) {
+      case 'hex':
+        return hexSlice(this, start, end)
+
+      case 'utf8':
+      case 'utf-8':
+        return utf8Slice(this, start, end)
+
+      case 'ascii':
+        return asciiSlice(this, start, end)
+
+      case 'latin1':
+      case 'binary':
+        return latin1Slice(this, start, end)
+
+      case 'base64':
+        return base64Slice(this, start, end)
+
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return utf16leSlice(this, start, end)
+
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = (encoding + '').toLowerCase()
+        loweredCase = true
+    }
+  }
+}
+
+// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
+// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
+// reliably in a browserify context because there could be multiple different
+// copies of the 'buffer' package in use. This method works even for Buffer
+// instances that were created from another copy of the `buffer` package.
+// See: https://github.com/feross/buffer/issues/154
+Buffer.prototype._isBuffer = true
+
+function swap (b, n, m) {
+  var i = b[n]
+  b[n] = b[m]
+  b[m] = i
+}
+
+Buffer.prototype.swap16 = function swap16 () {
+  var len = this.length
+  if (len % 2 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 16-bits')
+  }
+  for (var i = 0; i < len; i += 2) {
+    swap(this, i, i + 1)
+  }
+  return this
+}
+
+Buffer.prototype.swap32 = function swap32 () {
+  var len = this.length
+  if (len % 4 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 32-bits')
+  }
+  for (var i = 0; i < len; i += 4) {
+    swap(this, i, i + 3)
+    swap(this, i + 1, i + 2)
+  }
+  return this
+}
+
+Buffer.prototype.swap64 = function swap64 () {
+  var len = this.length
+  if (len % 8 !== 0) {
+    throw new RangeError('Buffer size must be a multiple of 64-bits')
+  }
+  for (var i = 0; i < len; i += 8) {
+    swap(this, i, i + 7)
+    swap(this, i + 1, i + 6)
+    swap(this, i + 2, i + 5)
+    swap(this, i + 3, i + 4)
+  }
+  return this
+}
+
+Buffer.prototype.toString = function toString () {
+  var length = this.length
+  if (length === 0) return ''
+  if (arguments.length === 0) return utf8Slice(this, 0, length)
+  return slowToString.apply(this, arguments)
+}
+
+Buffer.prototype.equals = function equals (b) {
+  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
+  if (this === b) return true
+  return Buffer.compare(this, b) === 0
+}
+
+Buffer.prototype.inspect = function inspect () {
+  var str = ''
+  var max = exports.INSPECT_MAX_BYTES
+  if (this.length > 0) {
+    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
+    if (this.length > max) str += ' ... '
+  }
+  return '<Buffer ' + str + '>'
+}
+
+Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
+  if (!Buffer.isBuffer(target)) {
+    throw new TypeError('Argument must be a Buffer')
+  }
+
+  if (start === undefined) {
+    start = 0
+  }
+  if (end === undefined) {
+    end = target ? target.length : 0
+  }
+  if (thisStart === undefined) {
+    thisStart = 0
+  }
+  if (thisEnd === undefined) {
+    thisEnd = this.length
+  }
+
+  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
+    throw new RangeError('out of range index')
+  }
+
+  if (thisStart >= thisEnd && start >= end) {
+    return 0
+  }
+  if (thisStart >= thisEnd) {
+    return -1
+  }
+  if (start >= end) {
+    return 1
+  }
+
+  start >>>= 0
+  end >>>= 0
+  thisStart >>>= 0
+  thisEnd >>>= 0
+
+  if (this === target) return 0
+
+  var x = thisEnd - thisStart
+  var y = end - start
+  var len = Math.min(x, y)
+
+  var thisCopy = this.slice(thisStart, thisEnd)
+  var targetCopy = target.slice(start, end)
+
+  for (var i = 0; i < len; ++i) {
+    if (thisCopy[i] !== targetCopy[i]) {
+      x = thisCopy[i]
+      y = targetCopy[i]
+      break
+    }
+  }
+
+  if (x < y) return -1
+  if (y < x) return 1
+  return 0
+}
+
+// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
+// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
+//
+// Arguments:
+// - buffer - a Buffer to search
+// - val - a string, Buffer, or number
+// - byteOffset - an index into `buffer`; will be clamped to an int32
+// - encoding - an optional encoding, relevant is val is a string
+// - dir - true for indexOf, false for lastIndexOf
+function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
+  // Empty buffer means no match
+  if (buffer.length === 0) return -1
+
+  // Normalize byteOffset
+  if (typeof byteOffset === 'string') {
+    encoding = byteOffset
+    byteOffset = 0
+  } else if (byteOffset > 0x7fffffff) {
+    byteOffset = 0x7fffffff
+  } else if (byteOffset < -0x80000000) {
+    byteOffset = -0x80000000
+  }
+  byteOffset = +byteOffset  // Coerce to Number.
+  if (numberIsNaN(byteOffset)) {
+    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
+    byteOffset = dir ? 0 : (buffer.length - 1)
+  }
+
+  // Normalize byteOffset: negative offsets start from the end of the buffer
+  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
+  if (byteOffset >= buffer.length) {
+    if (dir) return -1
+    else byteOffset = buffer.length - 1
+  } else if (byteOffset < 0) {
+    if (dir) byteOffset = 0
+    else return -1
+  }
+
+  // Normalize val
+  if (typeof val === 'string') {
+    val = Buffer.from(val, encoding)
+  }
+
+  // Finally, search either indexOf (if dir is true) or lastIndexOf
+  if (Buffer.isBuffer(val)) {
+    // Special case: looking for empty string/buffer always fails
+    if (val.length === 0) {
+      return -1
+    }
+    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
+  } else if (typeof val === 'number') {
+    val = val & 0xFF // Search for a byte value [0-255]
+    if (typeof Uint8Array.prototype.indexOf === 'function') {
+      if (dir) {
+        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
+      } else {
+        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
+      }
+    }
+    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
+  }
+
+  throw new TypeError('val must be string, number or Buffer')
+}
+
+function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
+  var indexSize = 1
+  var arrLength = arr.length
+  var valLength = val.length
+
+  if (encoding !== undefined) {
+    encoding = String(encoding).toLowerCase()
+    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
+        encoding === 'utf16le' || encoding === 'utf-16le') {
+      if (arr.length < 2 || val.length < 2) {
+        return -1
+      }
+      indexSize = 2
+      arrLength /= 2
+      valLength /= 2
+      byteOffset /= 2
+    }
+  }
+
+  function read (buf, i) {
+    if (indexSize === 1) {
+      return buf[i]
+    } else {
+      return buf.readUInt16BE(i * indexSize)
+    }
+  }
+
+  var i
+  if (dir) {
+    var foundIndex = -1
+    for (i = byteOffset; i < arrLength; i++) {
+      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
+        if (foundIndex === -1) foundIndex = i
+        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
+      } else {
+        if (foundIndex !== -1) i -= i - foundIndex
+        foundIndex = -1
+      }
+    }
+  } else {
+    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
+    for (i = byteOffset; i >= 0; i--) {
+      var found = true
+      for (var j = 0; j < valLength; j++) {
+        if (read(arr, i + j) !== read(val, j)) {
+          found = false
+          break
+        }
+      }
+      if (found) return i
+    }
+  }
+
+  return -1
+}
+
+Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
+  return this.indexOf(val, byteOffset, encoding) !== -1
+}
 
-            <hr>
+Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+}
 
-            <div class="row">
-                <div class="col-md-12">
+Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
+  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+}
 
-                    <h2>This project is 100% open-source code</h2>
+function hexWrite (buf, string, offset, length) {
+  offset = Number(offset) || 0
+  var remaining = buf.length - offset
+  if (!length) {
+    length = remaining
+  } else {
+    length = Number(length)
+    if (length > remaining) {
+      length = remaining
+    }
+  }
 
-                    <p>
-                        <span>Get the source code from the repository</span>
-                        -
-                        <a href="https://github.com/iancoleman/bip39" target="_blank">
-                            https://github.com/iancoleman/bip39
-                        </a>
-                    </p>
+  // must be an even number of digits
+  var strLen = string.length
+  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
 
-                    <h3>Libraries</h3>
+  if (length > strLen / 2) {
+    length = strLen / 2
+  }
+  for (var i = 0; i < length; ++i) {
+    var parsed = parseInt(string.substr(i * 2, 2), 16)
+    if (numberIsNaN(parsed)) return i
+    buf[offset + i] = parsed
+  }
+  return i
+}
 
-                    <p>
-                        <span>BitcoinJS - </span>
-                        <a href="https://github.com/bitcoinjs/bitcoinjs-lib" target="_blank">
-                            https://github.com/bitcoinjs/bitcoinjs-lib
-                        </a>
-                    </p>
+function utf8Write (buf, string, offset, length) {
+  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
+}
 
-                    <p>
-                        <span>jsBIP39 - </span>
-                        <a href="https://github.com/iancoleman/jsbip39" target="_blank">
-                            https://github.com/iancoleman/jsbip39
-                        </a>
-                    </p>
+function asciiWrite (buf, string, offset, length) {
+  return blitBuffer(asciiToBytes(string), buf, offset, length)
+}
 
-                    <p>
-                        <span>sjcl - </span>
-                        <a href="https://github.com/bitwiseshiftleft/sjcl" target="_blank">
-                            https://github.com/bitwiseshiftleft/sjcl
-                        </a>
-                    </p>
+function latin1Write (buf, string, offset, length) {
+  return asciiWrite(buf, string, offset, length)
+}
 
-                    <p>
-                        <span>jQuery - </span>
-                        <a href="https://jquery.com/" target="_blank">
-                            https://jquery.com/
-                        </a>
-                    </p>
+function base64Write (buf, string, offset, length) {
+  return blitBuffer(base64ToBytes(string), buf, offset, length)
+}
 
-                    <p>
-                        <span>Twitter Bootstrap - </span>
-                        <a href="http://getbootstrap.com/" target="_blank">
-                            http://getbootstrap.com/
-                        </a>
-                    </p>
+function ucs2Write (buf, string, offset, length) {
+  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+}
 
-                </div>
-            </div>
+Buffer.prototype.write = function write (string, offset, length, encoding) {
+  // Buffer#write(string)
+  if (offset === undefined) {
+    encoding = 'utf8'
+    length = this.length
+    offset = 0
+  // Buffer#write(string, encoding)
+  } else if (length === undefined && typeof offset === 'string') {
+    encoding = offset
+    length = this.length
+    offset = 0
+  // Buffer#write(string, offset[, length][, encoding])
+  } else if (isFinite(offset)) {
+    offset = offset >>> 0
+    if (isFinite(length)) {
+      length = length >>> 0
+      if (encoding === undefined) encoding = 'utf8'
+    } else {
+      encoding = length
+      length = undefined
+    }
+  } else {
+    throw new Error(
+      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
+    )
+  }
 
-        </div>
+  var remaining = this.length - offset
+  if (length === undefined || length > remaining) length = remaining
 
-        <div class="qr-container hidden">
-            <div class="qr-hint bg-primary hidden">Click field to hide QR</div>
-            <div class="qr-hint bg-primary">Click field to show QR</div>
-            <div class="qr-hider hidden">
-                <div class="qr-image"></div>
-                <div class="qr-warning bg-primary">Caution: Scanner may keep history</div>
-            </div>
-        </div>
+  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
+    throw new RangeError('Attempt to write outside buffer bounds')
+  }
 
-        <div class="feedback-container">
-            <div class="feedback">Loading...</div>
-        </div>
+  if (!encoding) encoding = 'utf8'
 
-        <script type="text/template" id="address-row-template">
-            <tr>
-                <td class="index"><span></span></td>
-                <td class="address"><span data-show-qr></span></td>
-                <td class="pubkey"><span data-show-qr></span></td>
-                <td class="privkey"><span data-show-qr></span></td>
-            </tr>
-        </script>
-        <script>// From
-// https://raw.githubusercontent.com/inexorabletash/polyfill/a6bc6ced78160c994f76a909b6ff6bbbab3d43de/es6.js
-// Required for ethereumjs-utils.js when run in phantomjs-2.1.1
-// but is not required in any modern browsers.
-// For more information, see
-// https://www.bountysource.com/issues/38485709-error-rendering-plot-with-phantomjs
+  var loweredCase = false
+  for (;;) {
+    switch (encoding) {
+      case 'hex':
+        return hexWrite(this, string, offset, length)
 
-//----------------------------------------------------------------------
-//
-// ECMAScript 2015 Polyfills
-//
-//----------------------------------------------------------------------
+      case 'utf8':
+      case 'utf-8':
+        return utf8Write(this, string, offset, length)
 
-(function (global) {
-  "use strict";
+      case 'ascii':
+        return asciiWrite(this, string, offset, length)
 
-  // Set this to always override native implementations, for testing
-  // the polyfill in browsers with partial/full ES2015 support.
-  var OVERRIDE_NATIVE_FOR_TESTING = false;
+      case 'latin1':
+      case 'binary':
+        return latin1Write(this, string, offset, length)
 
-  var undefined = (void 0); // Paranoia
+      case 'base64':
+        // Warning: maxLength not taken into account in base64Write
+        return base64Write(this, string, offset, length)
 
-  // Helpers
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return ucs2Write(this, string, offset, length)
 
-  function strict(o) {
-    return o === global ? undefined : o;
+      default:
+        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
+        encoding = ('' + encoding).toLowerCase()
+        loweredCase = true
+    }
   }
+}
 
-  function hook(o, p, f) {
-    var op = o[p];
-    console.assert(typeof op === 'function', 'Hooking a non-function');
-    o[p] = function() {
-      var o = strict(this);
-      var r = f.apply(o, arguments);
-      return r !== undefined ? r : op.apply(o, arguments);
-    };
+Buffer.prototype.toJSON = function toJSON () {
+  return {
+    type: 'Buffer',
+    data: Array.prototype.slice.call(this._arr || this, 0)
   }
+}
 
-  function isSymbol(s) {
-    return (typeof s === 'symbol') || ('Symbol' in global && s instanceof global.Symbol);
+function base64Slice (buf, start, end) {
+  if (start === 0 && end === buf.length) {
+    return base64.fromByteArray(buf)
+  } else {
+    return base64.fromByteArray(buf.slice(start, end))
   }
+}
 
-  function getPropertyDescriptor(target, name) {
-    var desc = Object.getOwnPropertyDescriptor(target, name);
-    var proto = Object.getPrototypeOf(target);
-    while (!desc && proto) {
-      desc = Object.getOwnPropertyDescriptor(proto, name);
-      proto = Object.getPrototypeOf(proto);
-    }
-    return desc;
-  }
+function utf8Slice (buf, start, end) {
+  end = Math.min(buf.length, end)
+  var res = []
 
-  var enqueue = (function(nativePromise, nativeSetImmediate) {
-    if (nativePromise)
-      return function(job) { nativePromise.resolve().then(function() { job(); }); };
-    if (nativeSetImmediate)
-      return function(job) { nativeSetImmediate(job); };
-    return function(job) { setTimeout(job, 0); };
-  }(global['Promise'], global['setImmediate']));
+  var i = start
+  while (i < end) {
+    var firstByte = buf[i]
+    var codePoint = null
+    var bytesPerSequence = (firstByte > 0xEF) ? 4
+      : (firstByte > 0xDF) ? 3
+      : (firstByte > 0xBF) ? 2
+      : 1
 
-  function define(o, p, v, override) {
-    if (p in o && !override && !OVERRIDE_NATIVE_FOR_TESTING)
-      return;
+    if (i + bytesPerSequence <= end) {
+      var secondByte, thirdByte, fourthByte, tempCodePoint
 
-    if (typeof v === 'function') {
-      // Sanity check that functions are appropriately named (where possible)
-      console.assert(isSymbol(p) || !('name' in v) || v.name === p || v.name === p + '_', 'Expected function name "' + p.toString() + '", was "' + v.name + '"');
-      Object.defineProperty(o, p, {
-        value: v,
-        configurable: true,
-        enumerable: false,
-        writable: true
-      });
-    } else {
-      Object.defineProperty(o, p, {
-        value: v,
-        configurable: false,
-        enumerable: false,
-        writable: false
-      });
+      switch (bytesPerSequence) {
+        case 1:
+          if (firstByte < 0x80) {
+            codePoint = firstByte
+          }
+          break
+        case 2:
+          secondByte = buf[i + 1]
+          if ((secondByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
+            if (tempCodePoint > 0x7F) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 3:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
+            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
+              codePoint = tempCodePoint
+            }
+          }
+          break
+        case 4:
+          secondByte = buf[i + 1]
+          thirdByte = buf[i + 2]
+          fourthByte = buf[i + 3]
+          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
+            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
+            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
+              codePoint = tempCodePoint
+            }
+          }
+      }
     }
-  }
 
-  function set_internal(o, p, v) {
-    Object.defineProperty(o, p, {
-      value: v,
-      configurable: false,
-      enumerable: false,
-      writable: true
-    });
+    if (codePoint === null) {
+      // we did not generate a valid codePoint so insert a
+      // replacement char (U+FFFD) and advance only 1 byte
+      codePoint = 0xFFFD
+      bytesPerSequence = 1
+    } else if (codePoint > 0xFFFF) {
+      // encode to utf16 (surrogate pair dance)
+      codePoint -= 0x10000
+      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
+      codePoint = 0xDC00 | codePoint & 0x3FF
+    }
+
+    res.push(codePoint)
+    i += bytesPerSequence
   }
 
-  // Snapshot intrinsic functions
-  var $isNaN = global.isNaN,
-      $parseInt = global.parseInt,
-      $parseFloat = global.parseFloat;
+  return decodeCodePointsArray(res)
+}
 
-  var E = Math.E,
-      LOG10E = Math.LOG10E,
-      LOG2E = Math.LOG2E,
-      abs = Math.abs,
-      ceil = Math.ceil,
-      exp = Math.exp,
-      floor = Math.floor,
-      log = Math.log,
-      max = Math.max,
-      min = Math.min,
-      pow = Math.pow,
-      random = Math.random,
-      sqrt = Math.sqrt;
+// Based on http://stackoverflow.com/a/22747272/680742, the browser with
+// the lowest limit is Chrome, with 0x10000 args.
+// We go 1 magnitude less, for safety
+var MAX_ARGUMENTS_LENGTH = 0x1000
 
-  var orig_match = String.prototype.match,
-      orig_replace = String.prototype.replace,
-      orig_search = String.prototype.search,
-      orig_split = String.prototype.split;
+function decodeCodePointsArray (codePoints) {
+  var len = codePoints.length
+  if (len <= MAX_ARGUMENTS_LENGTH) {
+    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
+  }
 
-  // These are used for implementing the polyfills, but not exported.
+  // Decode in chunks to avoid "call stack size exceeded".
+  var res = ''
+  var i = 0
+  while (i < len) {
+    res += String.fromCharCode.apply(
+      String,
+      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
+    )
+  }
+  return res
+}
 
-  // Inspired by https://gist.github.com/1638059
-  /** @constructor */
-  function EphemeronTable() {
-    var secretKey = ObjectCreate(null);
+function asciiSlice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
 
-    function conceal(o) {
-      var oValueOf = o.valueOf, secrets = ObjectCreate(null);
-      Object.defineProperty(o, 'valueOf', {
-          value: (function(secretKey) {
-            return function (k) {
-              return (k === secretKey) ? secrets : oValueOf.apply(o, arguments);
-            };
-          }(secretKey)),
-        configurable: true,
-        writeable: true,
-        enumerable: false
-        });
-      return secrets;
-    }
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i] & 0x7F)
+  }
+  return ret
+}
 
-    function reveal(o) {
-      var v = typeof o.valueOf === 'function' && o.valueOf(secretKey);
-      return v === o ? null : v;
-    }
+function latin1Slice (buf, start, end) {
+  var ret = ''
+  end = Math.min(buf.length, end)
 
-    return {
-      clear: function() {
-        secretKey = ObjectCreate(null);
-      },
-      remove: function(key) {
-        var secrets = reveal(key);
-        if (secrets && HasOwnProperty(secrets, 'value')) {
-          delete secrets.value;
-          return true;
-        }
-        return false;
-      },
-      get: function(key, defaultValue) {
-        var secrets = reveal(key);
-        return (secrets && HasOwnProperty(secrets, 'value')) ? secrets.value : defaultValue;
-      },
-      has: function(key) {
-        var secrets = reveal(key);
-        return Boolean(secrets && HasOwnProperty(secrets, 'value'));
-      },
-      set: function(key, value) {
-        var secrets = reveal(key) || conceal(key);
-        secrets.value = value;
-      }
-    };
+  for (var i = start; i < end; ++i) {
+    ret += String.fromCharCode(buf[i])
   }
+  return ret
+}
 
-  var empty = Object.create(null);
+function hexSlice (buf, start, end) {
+  var len = buf.length
 
-  //----------------------------------------------------------------------
-  //
-  // ECMAScript 2015
-  // http://www.ecma-international.org/ecma-262/6.0/
-  //
-  //----------------------------------------------------------------------
+  if (!start || start < 0) start = 0
+  if (!end || end < 0 || end > len) end = len
 
-  // ---------------------------------------
-  // 19.4 Symbol Objects
-  // ---------------------------------------
+  var out = ''
+  for (var i = start; i < end; ++i) {
+    out += toHex(buf[i])
+  }
+  return out
+}
 
-  // NOTE: Symbols are defined here - out of spec order - since we need the
-  // properties and prototype to be populated for other polyfills.
+function utf16leSlice (buf, start, end) {
+  var bytes = buf.slice(start, end)
+  var res = ''
+  for (var i = 0; i < bytes.length; i += 2) {
+    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
+  }
+  return res
+}
 
-  // NOTE: Not secure, nor is obj[$$symbol] hidden from Object.keys()
+Buffer.prototype.slice = function slice (start, end) {
+  var len = this.length
+  start = ~~start
+  end = end === undefined ? len : ~~end
 
-  var symbolForKey;
-  (function() {
-    var secret = Object.create(null);
-    var symbolMap = {};
-    symbolForKey = function(k) {
-      return symbolMap[k];
-    };
+  if (start < 0) {
+    start += len
+    if (start < 0) start = 0
+  } else if (start > len) {
+    start = len
+  }
 
-    var GlobalSymbolRegistry = [];
+  if (end < 0) {
+    end += len
+    if (end < 0) end = 0
+  } else if (end > len) {
+    end = len
+  }
 
-    function unique(bits) {
-      return Array(bits + 1).join('x').replace(/x/g, function() {
-        return random() < 0.5 ? '\u200C' : '\u200D'; // JWNJ / ZWJ
-      });
-    }
+  if (end < start) end = start
 
-    // 19.4.1 The Symbol Constructor
-    // 19.4.1.1 Symbol ( description=undefined )
-    function Symbol(description) {
-      if (!(this instanceof Symbol)) return new Symbol(description, secret);
-      if (this instanceof Symbol && arguments[1] !== secret) throw TypeError();
+  var newBuf = this.subarray(start, end)
+  // Return an augmented `Uint8Array` instance
+  newBuf.__proto__ = Buffer.prototype
+  return newBuf
+}
 
-      var descString = description === undefined ? undefined : String(description);
+/*
+ * Need to make sure that buffer isn't trying to write out of bounds.
+ */
+function checkOffset (offset, ext, length) {
+  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
+  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+}
+
+Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
+
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
 
-      set_internal(this, '[[SymbolData]]', unique(128));
-      set_internal(this, '[[Description]]', descString);
+  return val
+}
 
-      symbolMap[this] = this;
-      return this;
-    }
+Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    checkOffset(offset, byteLength, this.length)
+  }
 
-    if (!('Symbol' in global) || OVERRIDE_NATIVE_FOR_TESTING)
-      global.Symbol = Symbol;
+  var val = this[offset + --byteLength]
+  var mul = 1
+  while (byteLength > 0 && (mul *= 0x100)) {
+    val += this[offset + --byteLength] * mul
+  }
 
-    // 19.4.2 Properties of the Symbol Constructor
+  return val
+}
 
-    // 19.4.2.1 Symbol.for (key)
-    define(Symbol, 'for', function for_(key) {
-      var stringKey = String(key);
-      for (var i = 0; i < GlobalSymbolRegistry.length; ++i) {
-        var e = GlobalSymbolRegistry[i];
-        if (SameValue(e['[[key]]'], stringKey)) return e['[[symbol]]'];
-      }
-      var newSymbol = Symbol(key);
-      GlobalSymbolRegistry.push({'[[key]]': stringKey, '[[symbol]]': newSymbol});
-      return newSymbol;
-    });
+Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  return this[offset]
+}
 
-    // 19.4.2.2 Symbol.hasInstance
-    // 19.4.2.3 Symbol.isConcatSpreadable
+Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return this[offset] | (this[offset + 1] << 8)
+}
 
-    // 19.4.2.4 Symbol.iterator
-    define(global.Symbol, 'iterator', global.Symbol('Symbol.iterator'));
+Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  return (this[offset] << 8) | this[offset + 1]
+}
 
-    // 19.4.2.5 Symbol.keyFor (sym)
-    define(Symbol, 'keyFor', function keyFor(sym) {
-      if (!(sym instanceof Symbol)) throw TypeError();
-      for (var i = 0; i < GlobalSymbolRegistry.length; ++i) {
-        var e = GlobalSymbolRegistry[i];
-        if (SameValue(e['[[symbol]]'], sym)) return e['[[key]]'];
-      }
-      return undefined;
-    });
+Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-    // 19.4.2.6 Symbol.match
-    define(global.Symbol, 'match', global.Symbol('Symbol.match'));
+  return ((this[offset]) |
+      (this[offset + 1] << 8) |
+      (this[offset + 2] << 16)) +
+      (this[offset + 3] * 0x1000000)
+}
 
-    // 19.4.2.7 Symbol.prototype
+Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-    // 19.4.2.8 Symbol.replace
-    define(global.Symbol, 'replace', global.Symbol('Symbol.replace'));
+  return (this[offset] * 0x1000000) +
+    ((this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    this[offset + 3])
+}
 
-    // 19.4.2.9 Symbol.search
-    define(global.Symbol, 'search', global.Symbol('Symbol.search'));
+Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
 
-    // 19.4.2.10 Symbol.species
+  var val = this[offset]
+  var mul = 1
+  var i = 0
+  while (++i < byteLength && (mul *= 0x100)) {
+    val += this[offset + i] * mul
+  }
+  mul *= 0x80
 
-    // 19.4.2.11 Symbol.search
-    define(global.Symbol, 'split', global.Symbol('Symbol.split'));
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
 
-    // 19.4.2.12 Symbol.toPrimitive
+  return val
+}
 
-    // 19.4.2.13 Symbol.toStringTag
-    define(global.Symbol, 'toStringTag', global.Symbol('Symbol.toStringTag'));
+Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) checkOffset(offset, byteLength, this.length)
 
-    // 19.4.2.14 Symbol.unscopables
+  var i = byteLength
+  var mul = 1
+  var val = this[offset + --i]
+  while (i > 0 && (mul *= 0x100)) {
+    val += this[offset + --i] * mul
+  }
+  mul *= 0x80
 
-    // 19.4.3 Properties of the Symbol Prototype Object
-    // 19.4.3.1 Symbol.prototype.constructor
+  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
 
-    // 19.4.3.2 Symbol.prototype.toString ( )
-    Object.defineProperty(Symbol.prototype, 'toString', {
-      value: function toString() {
-        var s = strict(this);
-        var desc = s['[[Description]]'];
-        return 'Symbol(' + (desc === undefined ? '' : desc) + s['[[SymbolData]]'] + ')';
-      },
-      configurable: true, writeable: true, enumerable: false });
+  return val
+}
 
-    // 19.4.3.3 Symbol.prototype.valueOf ( )
-    Object.defineProperty(Symbol.prototype, 'valueOf', {
-      value: function valueOf() {
-        // To prevent automatic string conversion:
-        throw TypeError();
+Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 1, this.length)
+  if (!(this[offset] & 0x80)) return (this[offset])
+  return ((0xff - this[offset] + 1) * -1)
+}
 
-        // Spec has approximately the following:
-        //var s = strict(this);
-        //if (Type(s) === 'symbol') return s;
-        //if (Type(s) !== 'object') throw TypeError();
-        //if (!('[[SymbolData]]' in s)) throw TypeError();
-        //return s['[[SymbolData]]'];
-      },
-      configurable: true, writeable: true, enumerable: false });
+Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset] | (this[offset + 1] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
 
-    // 19.4.3.4 Symbol.prototype [ @@toStringTag ]
-    // (Done later to polyfill partial implementations)
+Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 2, this.length)
+  var val = this[offset + 1] | (this[offset] << 8)
+  return (val & 0x8000) ? val | 0xFFFF0000 : val
+}
 
-    // 19.4.4 Properties of Symbol Instances
-  }());
+Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-  console.assert(typeof global.Symbol() === 'symbol' || symbolForKey(String(global.Symbol('x'))));
+  return (this[offset]) |
+    (this[offset + 1] << 8) |
+    (this[offset + 2] << 16) |
+    (this[offset + 3] << 24)
+}
 
-  // Defined here so that other prototypes can reference it
-  // 25.1.2 The %IteratorPrototype% Object
-  var $IteratorPrototype$ = {};
+Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
 
-  //----------------------------------------
-  // 6 ECMAScript Data Types and Values
-  //----------------------------------------
+  return (this[offset] << 24) |
+    (this[offset + 1] << 16) |
+    (this[offset + 2] << 8) |
+    (this[offset + 3])
+}
 
-  // 6.1 ECMAScript Language Types
+Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, true, 23, 4)
+}
 
-  // "Type(x)" is used as shorthand for "the type of x"...
-  function Type(v) {
-    switch (typeof v) {
-    case 'undefined': return 'undefined';
-    case 'boolean': return 'boolean';
-    case 'number': return 'number';
-    case 'string': return 'string';
-    case 'symbol': return 'symbol';
-    default:
-      if (v === null) return 'null';
-      if (v instanceof global.Symbol) return 'symbol';
-      return 'object';
-    }
-  }
+Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 4, this.length)
+  return ieee754.read(this, offset, false, 23, 4)
+}
 
-  // 6.1.5.1 Well-Known Symbols
-  var $$iterator = global.Symbol.iterator,
-      $$match = global.Symbol.match,
-      $$replace = global.Symbol.replace,
-      $$search = global.Symbol.search,
-      $$split = global.Symbol.split,
-      $$toStringTag = global.Symbol.toStringTag;
+Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, true, 52, 8)
+}
 
-  //----------------------------------------
-  // 7 Abstract Operations
-  //----------------------------------------
+Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
+  offset = offset >>> 0
+  if (!noAssert) checkOffset(offset, 8, this.length)
+  return ieee754.read(this, offset, false, 52, 8)
+}
 
-  //----------------------------------------
-  // 7.1 Type Conversion
-  //----------------------------------------
+function checkInt (buf, value, offset, ext, max, min) {
+  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
+  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+}
 
-  // 7.1.1 ToPrimitive ( input [, PreferredType] )
-  // just use valueOf()
+Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
+  }
 
-  // 7.1.2 ToBoolean ( argument )
-  // just use Boolean()
+  var mul = 1
+  var i = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
 
-  // 7.1.3 ToNumber ( argument )
-  // just use Number()
+  return offset + byteLength
+}
 
-  // 7.1.4 ToInteger ( argument )
-  function ToInteger(n) {
-    n = Number(n);
-    if ($isNaN(n)) return 0;
-    if (n === 0 || n === Infinity || n === -Infinity) return n;
-    return ((n < 0) ? -1 : 1) * floor(abs(n));
+Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  byteLength = byteLength >>> 0
+  if (!noAssert) {
+    var maxBytes = Math.pow(2, 8 * byteLength) - 1
+    checkInt(this, value, offset, byteLength, maxBytes, 0)
   }
 
-  // 7.1.5 ToInt32 ( argument )
-  function ToInt32(v) { return v >> 0; }
+  var i = byteLength - 1
+  var mul = 1
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    this[offset + i] = (value / mul) & 0xFF
+  }
 
-  // 7.1.6 ToUint32 ( argument )
-  function ToUint32(v) { return v >>> 0; }
+  return offset + byteLength
+}
 
-  // 7.1.7 ToInt16 ( argument )
-  function ToInt16(v) { return (v << 16) >> 16; }
+Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
 
-  // 7.1.8 ToUint16 ( argument )
-  function ToUint16(v) { return v & 0xFFFF; }
+Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
 
-  // 7.1.9 ToInt8 ( argument )
-  function ToInt8(v) { return (v << 24) >> 24; }
+Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
 
-  // 7.1.10 ToUint8 ( argument )
-  function ToUint8(v) { return v & 0xFF; }
+Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset + 3] = (value >>> 24)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 1] = (value >>> 8)
+  this[offset] = (value & 0xff)
+  return offset + 4
+}
 
-  // 7.1.11 ToUint8Clamp ( argument )
-  function ToUint8Clamp(argument) {
-    var number = Number(argument);
-    if ($isNaN(number)) return 0;
-    if (number <= 0) return 0;
-    if (number >= 255) return 255;
-    var f = floor(number);
-    if ((f + 0.5) < number) return f + 1;
-    if (number < (f + 0.5)) return f;
-    if (f % 2) return f + 1;
-    return f;
-  }
+Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
 
-  // 7.1.12 ToString ( argument )
-  // just use String()
+Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
 
-  // 7.1.13 ToObject ( argument )
-  function ToObject(v) {
-    if (v === null || v === undefined) throw TypeError();
-    return Object(v);
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
   }
 
-  // 7.1.14 ToPropertyKey ( argument )
-  function ToPropertyKey(v) {
-    return String(v);
+  var i = 0
+  var mul = 1
+  var sub = 0
+  this[offset] = value & 0xFF
+  while (++i < byteLength && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
   }
 
-  // 7.1.15 ToLength ( argument )
-  function ToLength(v) {
-    var len = ToInteger(v);
-    if (len <= 0) return 0;
-    if (len === Infinity) return 0x20000000000000 - 1; // 2^53-1
-    return min(len, 0x20000000000000 - 1); // 2^53-1
-  }
+  return offset + byteLength
+}
 
-  // 7.1.16 CanonicalNumericIndexString ( argument )
+Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    var limit = Math.pow(2, (8 * byteLength) - 1)
 
-  //----------------------------------------
-  // 7.2 Testing and Comparison Operations
-  //----------------------------------------
+    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+  }
 
-  // 7.2.1 RequireObjectCoercible ( argument )
-  // 7.2.2 IsArray ( argument )
+  var i = byteLength - 1
+  var mul = 1
+  var sub = 0
+  this[offset + i] = value & 0xFF
+  while (--i >= 0 && (mul *= 0x100)) {
+    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
+      sub = 1
+    }
+    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+  }
 
-  // 7.2.3 IsCallable ( argument )
-  function IsCallable(o) { return typeof o === 'function'; }
+  return offset + byteLength
+}
 
-  // 7.2.4 IsConstructor ( argument )
-  function IsConstructor(o) {
-    // Hacks for Safari 7 TypedArray XXXConstructor objects
-    if (/Constructor/.test(Object.prototype.toString.call(o))) return true;
-    if (/Function/.test(Object.prototype.toString.call(o))) return true;
-    // TODO: Can this be improved on?
-    return typeof o === 'function';
-  }
+Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
+  if (value < 0) value = 0xff + value + 1
+  this[offset] = (value & 0xff)
+  return offset + 1
+}
 
-  // 7.2.5 IsExtensible (O)
-  // 7.2.6 IsInteger ( argument )
+Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  return offset + 2
+}
 
-  // 7.2.7 IsPropertyKey ( argument )
-  function IsPropertyKey(argument) {
-    if (Type(argument) === 'string') return true;
-    if (Type(argument) === 'symbol') return true;
-    return false;
-  }
+Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
+  this[offset] = (value >>> 8)
+  this[offset + 1] = (value & 0xff)
+  return offset + 2
+}
 
-  // 7.2.8 IsRegExp ( argument )
-  // 7.2.5 IsConstructor ( argument )
+Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  this[offset] = (value & 0xff)
+  this[offset + 1] = (value >>> 8)
+  this[offset + 2] = (value >>> 16)
+  this[offset + 3] = (value >>> 24)
+  return offset + 4
+}
 
-  // 7.2.9 SameValue(x, y)
-  function SameValue(x, y) {
-    if (typeof x !== typeof y) return false;
-    switch (typeof x) {
-    case 'undefined':
-      return true;
-    case 'number':
-      if (x !== x && y !== y) return true;
-      if (x === 0 && y === 0) return 1/x === 1/y;
-      return x === y;
-    case 'boolean':
-    case 'string':
-    case 'object':
-    default:
-      return x === y;
-    }
-  }
+Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
+  if (value < 0) value = 0xffffffff + value + 1
+  this[offset] = (value >>> 24)
+  this[offset + 1] = (value >>> 16)
+  this[offset + 2] = (value >>> 8)
+  this[offset + 3] = (value & 0xff)
+  return offset + 4
+}
 
-  // 7.2.10 SameValueZero(x, y)
-  function SameValueZero(x, y) {
-    if (typeof x !== typeof y) return false;
-    switch (typeof x) {
-    case 'undefined':
-      return true;
-    case 'number':
-      if (x !== x && y !== y) return true;
-      return x === y;
-    case 'boolean':
-    case 'string':
-    case 'object':
-    default:
-      return x === y;
-    }
+function checkIEEE754 (buf, value, offset, ext, max, min) {
+  if (offset + ext > buf.length) throw new RangeError('Index out of range')
+  if (offset < 0) throw new RangeError('Index out of range')
+}
+
+function writeFloat (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
   }
+  ieee754.write(buf, value, offset, littleEndian, 23, 4)
+  return offset + 4
+}
 
-  //----------------------------------------
-  // 7.3 Operations on Objects
-  //----------------------------------------
+Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, true, noAssert)
+}
 
-  // 7.3.1 Get (O, P)
-  // - just use o.p or o[p]
+Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
+  return writeFloat(this, value, offset, false, noAssert)
+}
 
-  // 7.3.2 GetV (V, P)
-  function GetV(v, p) {
-    var o = ToObject(v);
-    return o[p];
+function writeDouble (buf, value, offset, littleEndian, noAssert) {
+  value = +value
+  offset = offset >>> 0
+  if (!noAssert) {
+    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
   }
+  ieee754.write(buf, value, offset, littleEndian, 52, 8)
+  return offset + 8
+}
 
-  // 7.3.3 Set (O, P, V, Throw)
-  // - just use o.p = v or o[p] = v
+Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, true, noAssert)
+}
 
+Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
+  return writeDouble(this, value, offset, false, noAssert)
+}
 
+// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
+Buffer.prototype.copy = function copy (target, targetStart, start, end) {
+  if (!start) start = 0
+  if (!end && end !== 0) end = this.length
+  if (targetStart >= target.length) targetStart = target.length
+  if (!targetStart) targetStart = 0
+  if (end > 0 && end < start) end = start
 
+  // Copy 0 bytes; we're done
+  if (end === start) return 0
+  if (target.length === 0 || this.length === 0) return 0
 
-  // 7.3.9 GetMethod (O, P)
-  function GetMethod(o, p) {
-    var func = GetV(o, p);
-    if (func === undefined || func === null) return undefined;
-    if (!IsCallable(func)) throw TypeError();
-    return func;
+  // Fatal error conditions
+  if (targetStart < 0) {
+    throw new RangeError('targetStart out of bounds')
   }
+  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
+  if (end < 0) throw new RangeError('sourceEnd out of bounds')
 
-  // 7.3.10 HasProperty (O, P)
-  function HasProperty(o, p) {
-    while (o) {
-      if (Object.prototype.hasOwnProperty.call(o, p)) return true;
-      if (Type(o) !== 'object') return false;
-      o = Object.getPrototypeOf(o);
-    }
-    return false;
+  // Are we oob?
+  if (end > this.length) end = this.length
+  if (target.length - targetStart < end - start) {
+    end = target.length - targetStart + start
   }
 
-  // 7.3.11 HasOwnProperty (O, P)
-  function HasOwnProperty(o, p) {
-    return Object.prototype.hasOwnProperty.call(o, p);
+  var len = end - start
+  var i
+
+  if (this === target && start < targetStart && targetStart < end) {
+    // descending copy from end
+    for (i = len - 1; i >= 0; --i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else if (len < 1000) {
+    // ascending copy from start
+    for (i = 0; i < len; ++i) {
+      target[i + targetStart] = this[i + start]
+    }
+  } else {
+    Uint8Array.prototype.set.call(
+      target,
+      this.subarray(start, start + len),
+      targetStart
+    )
   }
 
-  //----------------------------------------
-  // 7.4 Operations on Iterator Objects
-  //----------------------------------------
+  return len
+}
 
-  // 7.4.1 GetIterator ( obj, method )
-  function GetIterator(obj, method) {
-    if (arguments.length < 2)
-      method = GetMethod(obj, $$iterator);
-    var iterator = method.call(obj);
-    if (Type(iterator) !== 'object') throw TypeError();
-    return iterator;
+// Usage:
+//    buffer.fill(number[, offset[, end]])
+//    buffer.fill(buffer[, offset[, end]])
+//    buffer.fill(string[, offset[, end]][, encoding])
+Buffer.prototype.fill = function fill (val, start, end, encoding) {
+  // Handle string cases:
+  if (typeof val === 'string') {
+    if (typeof start === 'string') {
+      encoding = start
+      start = 0
+      end = this.length
+    } else if (typeof end === 'string') {
+      encoding = end
+      end = this.length
+    }
+    if (val.length === 1) {
+      var code = val.charCodeAt(0)
+      if (code < 256) {
+        val = code
+      }
+    }
+    if (encoding !== undefined && typeof encoding !== 'string') {
+      throw new TypeError('encoding must be a string')
+    }
+    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
+      throw new TypeError('Unknown encoding: ' + encoding)
+    }
+  } else if (typeof val === 'number') {
+    val = val & 255
   }
 
-  // 7.4.2 IteratorNext ( iterator, value )
-  function IteratorNext(iterator, value) {
-    if (arguments.length < 2)
-      var result = iterator.next();
-    else
-      result = iterator.next(value);
-    if (Type(result) !== 'object') throw TypeError();
-    return result;
+  // Invalid ranges are not set to a default, so can range check early.
+  if (start < 0 || this.length < start || this.length < end) {
+    throw new RangeError('Out of range index')
   }
 
-  // 7.4.3 IteratorComplete ( iterResult )
-  function IteratorComplete(iterResult) {
-    console.assert(Type(iterResult) === 'object');
-    return Boolean(iterResult.done);
+  if (end <= start) {
+    return this
   }
 
-  // 7.4.4 IteratorValue ( iterResult )
-  function IteratorValue(iterResult) {
-    console.assert(Type(iterResult) === 'object');
-    return iterResult.value;
-  }
+  start = start >>> 0
+  end = end === undefined ? this.length : end >>> 0
 
-  // 7.4.5 IteratorStep ( iterator )
-  function IteratorStep( iterator, value ) {
-    var result = IteratorNext(iterator, value);
-    var done = result['done'];
-    if (Boolean(done) === true) return false;
-    return result;
-  }
+  if (!val) val = 0
 
-  // 7.4.6 IteratorClose( iterator, completion )
-  function IteratorClose( iterator, completion ) {
-    console.assert(Type(iterator) === 'object');
-    var _return = GetMethod(iterator, 'return');
-    if (_return === undefined) return completion;
-    try {
-      var innerResult = _return[iterator]();
-    } catch (result) {
-      // TODO: If completion.[[type]] is throw, return completion
-      return result;
+  var i
+  if (typeof val === 'number') {
+    for (i = start; i < end; ++i) {
+      this[i] = val
+    }
+  } else {
+    var bytes = Buffer.isBuffer(val)
+      ? val
+      : new Buffer(val, encoding)
+    var len = bytes.length
+    for (i = 0; i < end - start; ++i) {
+      this[i + start] = bytes[i % len]
     }
-    if (Type(innerResult) !== 'object') throw TypeError();
-    return completion;
-  }
-
-  // 7.4.7 CreateIterResultObject (value, done)
-  function CreateIterResultObject(value, done) {
-    console.assert(Type(done) === 'boolean');
-    var obj = {};
-    obj["value"] = value;
-    obj["done"] = done;
-    return obj;
   }
 
-  // 7.4.8 CreateListIterator (list)
-  // 7.4.8.1 ListIterator next( )
-  // 7.4.9 CreateCompoundIterator ( iterator1, iterator2 )
-  // 7.4.9.1 CompoundIterator next( )
+  return this
+}
 
-  //----------------------------------------
-  // 8 Executable Code and Execution Contexts
-  //----------------------------------------
+// HELPER FUNCTIONS
+// ================
 
-  //----------------------------------------
-  // 8.4 Jobs and Job Queues
-  //----------------------------------------
+var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
 
-  // 8.4.1 EnqueueJob ( queueName, job, arguments)
-  function EnqueueJob(queueName, job, args) {
-    var fn = function() { job.apply(undefined, args); };
-    enqueue(fn);
+function base64clean (str) {
+  // Node strips out invalid characters like \n and \t from the string, base64-js does not
+  str = str.trim().replace(INVALID_BASE64_RE, '')
+  // Node converts strings with length < 2 to ''
+  if (str.length < 2) return ''
+  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
+  while (str.length % 4 !== 0) {
+    str = str + '='
   }
+  return str
+}
 
-  // 8.4.2 NextJob result
-  function NextJob(result) {
-    // no-op
-  }
+function toHex (n) {
+  if (n < 16) return '0' + n.toString(16)
+  return n.toString(16)
+}
 
-  //----------------------------------------
-  // 9 Ordinary and Exotic Objects Behaviors
-  //----------------------------------------
+function utf8ToBytes (string, units) {
+  units = units || Infinity
+  var codePoint
+  var length = string.length
+  var leadSurrogate = null
+  var bytes = []
 
-  // 9.1.11 [[Enumerate]] ()
-  function Enumerate(obj) {
-    var e = [];
-    if (Object(obj) !== obj) return e;
-    var visited = new Set;
-    while (obj !== null) {
-      Object.getOwnPropertyNames(obj).forEach(function(name) {
-        if (!visited.has(name)) {
-          var desc = Object.getOwnPropertyDescriptor(obj, name);
-          if (desc) {
-            visited.add(name);
-            if (desc.enumerable) e.push(name);
-          }
+  for (var i = 0; i < length; ++i) {
+    codePoint = string.charCodeAt(i)
+
+    // is surrogate component
+    if (codePoint > 0xD7FF && codePoint < 0xE000) {
+      // last char was a lead
+      if (!leadSurrogate) {
+        // no lead yet
+        if (codePoint > 0xDBFF) {
+          // unexpected trail
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
+        } else if (i + 1 === length) {
+          // unpaired lead
+          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+          continue
         }
-      });
-      obj = Object.getPrototypeOf(obj);
+
+        // valid lead
+        leadSurrogate = codePoint
+
+        continue
+      }
+
+      // 2 leads in a row
+      if (codePoint < 0xDC00) {
+        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+        leadSurrogate = codePoint
+        continue
+      }
+
+      // valid surrogate pair
+      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
+    } else if (leadSurrogate) {
+      // valid bmp char, but last char was a lead
+      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
+    }
+
+    leadSurrogate = null
+
+    // encode utf8
+    if (codePoint < 0x80) {
+      if ((units -= 1) < 0) break
+      bytes.push(codePoint)
+    } else if (codePoint < 0x800) {
+      if ((units -= 2) < 0) break
+      bytes.push(
+        codePoint >> 0x6 | 0xC0,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x10000) {
+      if ((units -= 3) < 0) break
+      bytes.push(
+        codePoint >> 0xC | 0xE0,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else if (codePoint < 0x110000) {
+      if ((units -= 4) < 0) break
+      bytes.push(
+        codePoint >> 0x12 | 0xF0,
+        codePoint >> 0xC & 0x3F | 0x80,
+        codePoint >> 0x6 & 0x3F | 0x80,
+        codePoint & 0x3F | 0x80
+      )
+    } else {
+      throw new Error('Invalid code point')
     }
-    return e[$$iterator]();
   }
 
-  // 9.1.12 [[OwnPropertyKeys]] ( )
-  function OwnPropertyKeys(o) {
-    return Object.getOwnPropertyNames(o);
+  return bytes
+}
+
+function asciiToBytes (str) {
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    // Node's code seems to be doing this and not & 0x7F..
+    byteArray.push(str.charCodeAt(i) & 0xFF)
   }
+  return byteArray
+}
 
-  // 9.1.13 ObjectCreate(proto, internalSlotsList)
-  function ObjectCreate(proto, internalSlotsList) {
-    return Object.create(proto, internalSlotsList);
+function utf16leToBytes (str, units) {
+  var c, hi, lo
+  var byteArray = []
+  for (var i = 0; i < str.length; ++i) {
+    if ((units -= 2) < 0) break
+
+    c = str.charCodeAt(i)
+    hi = c >> 8
+    lo = c % 256
+    byteArray.push(lo)
+    byteArray.push(hi)
   }
 
-  // ---------------------------------------
-  // 19 Fundamental Objects
-  // ---------------------------------------
+  return byteArray
+}
 
-  // ---------------------------------------
-  // 19.1 Object Objects
-  // ---------------------------------------
+function base64ToBytes (str) {
+  return base64.toByteArray(base64clean(str))
+}
 
-  // 19.1.1 The Object Constructor
-  // 19.1.1.1 Object ( [ value ] )
-  // 19.1.2 Properties of the Object Constructor
-  // 19.1.2.1 Object.assign ( target, ...sources )
-  define(
-    Object, 'assign',
-    function assign(target, /*...*/sources) {
-      var to = ToObject(target);
-      if (arguments.length < 2) return to;
+function blitBuffer (src, dst, offset, length) {
+  for (var i = 0; i < length; ++i) {
+    if ((i + offset >= dst.length) || (i >= src.length)) break
+    dst[i + offset] = src[i]
+  }
+  return i
+}
 
-      var sourcesIndex = 1;
-      while (sourcesIndex < arguments.length) {
-        var nextSource = arguments[sourcesIndex++];
-        if (nextSource === undefined || nextSource === null) {
-          var keys = [];
-        } else {
-          var from = ToObject(nextSource);
-          keys = OwnPropertyKeys(from);
-        }
-        for (var keysIndex = 0; keysIndex < keys.length; ++keysIndex) {
-          var nextKey = keys[keysIndex];
-          var desc = Object.getOwnPropertyDescriptor(from, nextKey);
-          if (desc !== undefined && desc.enumerable) {
-            var propValue = from[nextKey];
-            to[nextKey] = propValue;
-          }
-        }
-      }
-      return to;
-    });
+// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
+function isArrayBufferView (obj) {
+  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+}
 
-  // 19.1.2.2 Object.create ( O [ , Properties ] )
-  // 19.1.2.3 Object.defineProperties ( O, Properties )
-  // 19.1.2.4 Object.defineProperty ( O, P, Attributes )
-  // 19.1.2.5 Object.freeze ( O )
-  // 19.1.2.6 Object.getOwnPropertyDescriptor ( O, P )
+function numberIsNaN (obj) {
+  return obj !== obj // eslint-disable-line no-self-compare
+}
 
-  (function() {
-    var nativeSymbols = (typeof global.Symbol() === 'symbol'),
-        $getOwnPropertyNames = Object.getOwnPropertyNames,
-        $keys = Object.keys,
-        $window_names = (typeof window === 'object' ? $getOwnPropertyNames(window) : []);
+},{"base64-js":2,"ieee754":8}],6:[function(require,module,exports){
+(function (Buffer){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-    function isStringKey(k) { return !symbolForKey(k); }
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
 
-    // 19.1.2.7 Object.getOwnPropertyNames ( O )
-    define(
-      Object, 'getOwnPropertyNames',
-      function getOwnPropertyNames(o) {
-        if (Object.prototype.toString.call(o) === '[object Window]') {
-          // Workaround for cross-realm calling by IE itself.
-          // https://github.com/inexorabletash/polyfill/issues/96
-          try {
-            return $getOwnPropertyNames(o).filter(isStringKey);
-          } catch (_) {
-            return $window_names.slice();
-          }
-        }
-        return $getOwnPropertyNames(o).filter(isStringKey);
-      }, !nativeSymbols);
+function isArray(arg) {
+  if (Array.isArray) {
+    return Array.isArray(arg);
+  }
+  return objectToString(arg) === '[object Array]';
+}
+exports.isArray = isArray;
 
-    // 19.1.2.8 Object.getOwnPropertySymbols ( O )
-    define(
-      Object, 'getOwnPropertySymbols',
-      function getOwnPropertySymbols(o) {
-        return $getOwnPropertyNames(o).filter(symbolForKey).map(symbolForKey);
-      }, !nativeSymbols);
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
+}
+exports.isBoolean = isBoolean;
 
-    // 19.1.2.14 Object.keys ( O )
-    define(
-      Object, 'keys',
-      function keys(o) {
-        return $keys(o).filter(isStringKey);
-      }, !nativeSymbols);
-  }());
+function isNull(arg) {
+  return arg === null;
+}
+exports.isNull = isNull;
 
-  // 19.1.2.9 Object.getPrototypeOf ( O )
-  // 19.1.2.10 Object.is ( value1, value2 )
-  define(
-    Object, 'is',
-    function is(value1, value2) {
-      return SameValue(value1, value2);
-    });
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
 
-  // 19.1.2.11 Object.isExtensible ( O )
-  // 19.1.2.12 Object.isFrozen ( O )
-  // 19.1.2.13 Object.isSealed ( O )
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
+
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
 
-  // 19.1.2.14 Object.keys ( O )
-  // see above
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
+}
+exports.isSymbol = isSymbol;
 
-  // 19.1.2.15 Object.preventExtensions ( O )
-  // 19.1.2.16 Object.prototype
-  // 19.1.2.17 Object.seal ( O )
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
 
-  // 19.1.2.18 Object.setPrototypeOf ( O, proto )
-  define(
-    Object, 'setPrototypeOf',
-    function setPrototypeOf(o, proto) {
-      if (Type(o) !== 'object') throw TypeError();
-      if (Type(proto) !== 'object' && Type(proto) !== 'null') throw TypeError();
-      o.__proto__ = proto;
-      return o;
-    }
-  );
+function isRegExp(re) {
+  return objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
 
-  // 19.1.3 Properties of the Object Prototype Object
-  // 19.1.3.1 Object.prototype.constructor
-  // 19.1.3.2 Object.prototype.hasOwnProperty ( V )
-  // 19.1.3.3 Object.prototype.isPrototypeOf ( V )
-  // 19.1.3.4 Object.prototype.propertyIsEnumerable ( V )
-  // 19.1.3.5 Object.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
-  // 19.1.3.6 Object.prototype.toString ( )
-  hook(Object.prototype, 'toString',
-       function() {
-         var o = strict(this);
-         if (o === Object(o) && $$toStringTag in o) {
-           return '[object ' + o[$$toStringTag] + ']';
-         }
-         return undefined;
-       });
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
+exports.isObject = isObject;
 
-  // 19.1.3.7 Object.prototype.valueOf ( )
-  // 19.1.4 Properties of Object Instances
+function isDate(d) {
+  return objectToString(d) === '[object Date]';
+}
+exports.isDate = isDate;
 
-  // ---------------------------------------
-  // 19.2 Function Objects
-  // ---------------------------------------
+function isError(e) {
+  return (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
 
-  // 19.2.1 The Function Constructor
-  // 19.2.1.1 Function ( p1, p2, … , pn, body )
-  // 19.2.2 Properties of the Function Constructor
-  // 19.2.2.1 Function.length
-  // 19.2.2.2 Function.prototype
-  // 19.2.3 Properties of the Function Prototype Object
-  // 19.2.3.1 Function.prototype.apply ( thisArg, argArray )
-  // 19.2.3.2 Function.prototype.bind ( thisArg , ...args)
-  // 19.2.3.3 Function.prototype.call (thisArg , ...args)
-  // 19.2.3.4 Function.prototype.constructor
-  // 19.2.3.5 Function.prototype.toString ( )
-  // 19.2.3.6 Function.prototype[@@hasInstance] ( V )
-  // 19.2.4 Function Instances
-  // 19.2.4.1 length
-  // 19.2.4.2 name
-  // 19.2.4.3 prototype
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
+exports.isFunction = isFunction;
 
-  // (No polyfillable changes from ES5)
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
 
-  // ---------------------------------------
-  // 19.3 Boolean Objects
-  // ---------------------------------------
+exports.isBuffer = Buffer.isBuffer;
 
-  // 19.3.1 The Boolean Constructor
-  // 19.3.1.1 Boolean ( value )
-  // 19.3.2 Properties of the Boolean Constructor
-  // 19.3.2.1 Boolean.prototype
-  // 19.3.3 Properties of the Boolean Prototype Object
-  // 19.3.3.1 Boolean.prototype.constructor
-  // 19.3.3.2 Boolean.prototype.toString ( )
-  // 19.3.3.3 Boolean.prototype.valueOf ( )
-  // 19.3.4 Properties of Boolean Instances
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
+}
 
-  // (No polyfillable changes from ES5)
+}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
+},{"../../is-buffer/index.js":10}],7:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  // ---------------------------------------
-  // 19.4 Symbol Objects
-  // ---------------------------------------
+function EventEmitter() {
+  this._events = this._events || {};
+  this._maxListeners = this._maxListeners || undefined;
+}
+module.exports = EventEmitter;
 
-  // Moved earlier in this script, so that other polyfills can depend on them.
+// Backwards-compat with node 0.10.x
+EventEmitter.EventEmitter = EventEmitter;
 
-  // 19.4.3.4 Symbol.prototype [ @@toStringTag ]
-  define(global.Symbol.prototype, global.Symbol.toStringTag, 'Symbol');
+EventEmitter.prototype._events = undefined;
+EventEmitter.prototype._maxListeners = undefined;
 
-  // ---------------------------------------
-  // 19.5 Error Objects
-  // ---------------------------------------
+// By default EventEmitters will print a warning if more than 10 listeners are
+// added to it. This is a useful default which helps finding memory leaks.
+EventEmitter.defaultMaxListeners = 10;
 
-  // 19.5.1 The Error Constructor
-  // 19.5.1.1 Error ( message )
-  // 19.5.1.2 new Error( ...argumentsList )
-  // 19.5.2 Properties of the Error Constructor
-  // 19.5.2.1 Error.prototype
-  // 19.5.3 Properties of the Error Prototype Object
-  // 19.5.3.1 Error.prototype.constructor
-  // 19.5.3.2 Error.prototype.message
-  // 19.5.3.3 Error.prototype.name
-  // 19.5.3.4 Error.prototype.toString ( )
-  // 19.5.4 Properties of Error Instances
-  // 19.5.5 Native Error Types Used in This Standard
-  // 19.5.5.1 EvalError
-  // 19.5.5.2 RangeError
-  // 19.5.5.3 ReferenceError
-  // 19.5.5.4 SyntaxError
-  // 19.5.5.5 TypeError
-  // 19.5.5.6 URIError
-  // 19.5.6 NativeError Object Structure
-  // 19.5.6.1 NativeError Constructors
-  // 19.5.6.1.1 NativeError ( message )
-  // 19.5.6.1.2 new NativeError ( ...argumentsList )
-  // 19.5.6.2 Properties of the NativeError Constructors
-  // 19.5.6.2.1 NativeError.prototype
-  // 19.5.6.3 Properties of the NativeError Prototype Objects
-  // 19.5.6.4 Properties of NativeError Instances
+// Obviously not all Emitters should be limited to 10. This function allows
+// that to be increased. Set to zero for unlimited.
+EventEmitter.prototype.setMaxListeners = function(n) {
+  if (!isNumber(n) || n < 0 || isNaN(n))
+    throw TypeError('n must be a positive number');
+  this._maxListeners = n;
+  return this;
+};
 
-  // (No polyfillable changes from ES5)
+EventEmitter.prototype.emit = function(type) {
+  var er, handler, len, args, i, listeners;
 
-  // ---------------------------------------
-  // 20 Numbers and Dates
-  // ---------------------------------------
+  if (!this._events)
+    this._events = {};
 
-  // ---------------------------------------
-  // 20.1 Number Objects
-  // ---------------------------------------
+  // If there is no 'error' event listener then throw.
+  if (type === 'error') {
+    if (!this._events.error ||
+        (isObject(this._events.error) && !this._events.error.length)) {
+      er = arguments[1];
+      if (er instanceof Error) {
+        throw er; // Unhandled 'error' event
+      } else {
+        // At least give some kind of context to the user
+        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
+        err.context = er;
+        throw err;
+      }
+    }
+  }
 
-  // 20.1.1 The Number Constructor
-  // 20.1.1.1 Number ( [ value ] )
-  // 20.1.1.2 new Number ( ...argumentsList )
-  // 20.1.2 Properties of the Number Constructor
+  handler = this._events[type];
 
-  // 20.1.2.1 Number.EPSILON
-  define(
-    Number, 'EPSILON',
-    (function () {
-      var next, result;
-      for (next = 1; 1 + next !== 1; next = next / 2)
-        result = next;
-      return result;
-    }()));
+  if (isUndefined(handler))
+    return false;
 
-  // 20.1.2.2 Number.isFinite ( number )
-  define(
-    Number, 'isFinite',
-    function isFinite(number) {
-      if (Type(number) !== 'number') return false;
-      if (number !== number || number === +Infinity || number === -Infinity) return false;
-      return true;
-    });
+  if (isFunction(handler)) {
+    switch (arguments.length) {
+      // fast cases
+      case 1:
+        handler.call(this);
+        break;
+      case 2:
+        handler.call(this, arguments[1]);
+        break;
+      case 3:
+        handler.call(this, arguments[1], arguments[2]);
+        break;
+      // slower
+      default:
+        args = Array.prototype.slice.call(arguments, 1);
+        handler.apply(this, args);
+    }
+  } else if (isObject(handler)) {
+    args = Array.prototype.slice.call(arguments, 1);
+    listeners = handler.slice();
+    len = listeners.length;
+    for (i = 0; i < len; i++)
+      listeners[i].apply(this, args);
+  }
 
-  // 20.1.2.3 Number.isInteger ( number )
-  define(
-    Number, 'isInteger',
-    function isInteger(number) {
-      if (Type(number) !== 'number') return false;
-      if (number !== number || number === +Infinity || number === -Infinity) return false;
-      var integer = ToInteger(number);
-      if (integer !== number) return false;
-      return true;
-    });
+  return true;
+};
 
-  // 20.1.2.4 Number.isNaN ( number )
-  define(
-    Number, 'isNaN',
-    function isNaN(number) {
-      if (Type(number) !== 'number') return false;
-      if (number !== number) return true;
-      return false;
-    });
+EventEmitter.prototype.addListener = function(type, listener) {
+  var m;
 
-  // 20.1.2.5 Number.isSafeInteger ( number )
-  define(
-    Number, 'isSafeInteger',
-    function isSafeInteger(number) {
-      if (Type(number) !== 'number') return false;
-      if (number !== number || number === +Infinity || number === -Infinity) return false;
-      var integer = ToInteger(number);
-      if (integer !== number) return false;
-      if (abs(integer) <= (0x20000000000000 - 1)) // 2^53-1
-        return true;
-      return false;
-    });
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
 
-  // 20.1.2.6 Number.MAX_SAFE_INTEGER
-  define(
-    Number, 'MAX_SAFE_INTEGER',
-    9007199254740991); // 2^53-1
+  if (!this._events)
+    this._events = {};
 
-  // 20.1.2.7 Number.MAX_VALUE
+  // To avoid recursion in the case that type === "newListener"! Before
+  // adding it to the listeners, first emit "newListener".
+  if (this._events.newListener)
+    this.emit('newListener', type,
+              isFunction(listener.listener) ?
+              listener.listener : listener);
 
-  // 20.1.2.8 Number.MIN_SAFE_INTEGER
-  define(
-    Number, 'MIN_SAFE_INTEGER',
-    -9007199254740991); // -2^53+1
+  if (!this._events[type])
+    // Optimize the case of one listener. Don't need the extra array object.
+    this._events[type] = listener;
+  else if (isObject(this._events[type]))
+    // If we've already got an array, just append.
+    this._events[type].push(listener);
+  else
+    // Adding the second element, need to change to array.
+    this._events[type] = [this._events[type], listener];
 
-  // 20.1.2.9 Number.MIN_VALUE
-  // 20.1.2.10 Number.NaN
-  // 20.1.2.11 Number.NEGATIVE_INFINITY
+  // Check for listener leak
+  if (isObject(this._events[type]) && !this._events[type].warned) {
+    if (!isUndefined(this._maxListeners)) {
+      m = this._maxListeners;
+    } else {
+      m = EventEmitter.defaultMaxListeners;
+    }
 
-  // 20.1.2.12 Number.parseFloat ( string )
-  define(Number, 'parseFloat', $parseFloat);
+    if (m && m > 0 && this._events[type].length > m) {
+      this._events[type].warned = true;
+      console.error('(node) warning: possible EventEmitter memory ' +
+                    'leak detected. %d listeners added. ' +
+                    'Use emitter.setMaxListeners() to increase limit.',
+                    this._events[type].length);
+      if (typeof console.trace === 'function') {
+        // not supported in IE 10
+        console.trace();
+      }
+    }
+  }
 
-  // 20.1.2.13 Number.parseInt ( string, radix )
-  define(Number, 'parseInt', $parseInt);
+  return this;
+};
 
-  // 20.1.2.14 Number.POSITIVE_INFINITY
-  // 20.1.2.15 Number.prototype
+EventEmitter.prototype.on = EventEmitter.prototype.addListener;
 
-  // 20.1.3 Properties of the Number Prototype Object
-  // 20.1.3.1 Number.prototype.constructor
-  // 20.1.3.2 Number.prototype.toExponential ( fractionDigits )
-  // 20.1.3.3 Number.prototype.toFixed ( fractionDigits )
-  // 20.1.3.4 Number.prototype.toLocaleString( [ reserved1 [ , reserved2 ] ])
-  // 20.1.3.5 Number.prototype.toPrecision ( precision )
-  // 20.1.3.6 Number.prototype.toString ( [ radix ] )
-  // 20.1.3.7 Number.prototype.valueOf ( )
-  // 20.1.4 Properties of Number Instances
+EventEmitter.prototype.once = function(type, listener) {
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
 
-  // ---------------------------------------
-  // 20.2 The Math Object
-  // ---------------------------------------
+  var fired = false;
 
-  // 20.2.1 Value Properties of the Math Object
-  // 20.2.1.1 Math.E
-  // 20.2.1.2 Math.LN10
-  // 20.2.1.3 Math.LN2
-  // 20.2.1.4 Math.LOG10E
-  // 20.2.1.5 Math.LOG2E
-  // 20.2.1.6 Math.PI
-  // 20.2.1.7 Math.SQRT1_2
-  // 20.2.1.8 Math.SQRT2
+  function g() {
+    this.removeListener(type, g);
 
-  // 20.2.1.9 Math [ @@toStringTag ]
-  define(Math, $$toStringTag, 'Math');
+    if (!fired) {
+      fired = true;
+      listener.apply(this, arguments);
+    }
+  }
 
-  // 20.2.2 Function Properties of the Math Object
-  // 20.2.2.1 Math.abs ( x )
-  // 20.2.2.2 Math.acos ( x )
+  g.listener = listener;
+  this.on(type, g);
 
-  // 20.2.2.3 Math.acosh(x)
-  define(
-    Math, 'acosh',
-    function acosh(x) {
-      x = Number(x);
-      return log(x + sqrt(x * x - 1));
-    });
+  return this;
+};
 
-  // 20.2.2.4 Math.asin ( x )
+// emits a 'removeListener' event iff the listener was removed
+EventEmitter.prototype.removeListener = function(type, listener) {
+  var list, position, length, i;
 
-  // 20.2.2.5 Math.asinh( x )
-  define(
-    Math, 'asinh',
-    function asinh(x) {
-      x = Number(x);
-      if (SameValue(x, -0)) {
-        return x;
-      }
-      var s = sqrt(x * x + 1);
-      return (s === -x) ? log(0) : log(x + s);
-    });
+  if (!isFunction(listener))
+    throw TypeError('listener must be a function');
 
-  // 20.2.2.6 Math.atan ( x )
+  if (!this._events || !this._events[type])
+    return this;
 
-  // 20.2.2.7 Math.atanh( x )
-  define(
-    Math, 'atanh',
-    function atanh(x) {
-      x = Number(x);
-      return (x === 0) ? x : log((1 + x) / (1 - x)) / 2;
-    });
+  list = this._events[type];
+  length = list.length;
+  position = -1;
 
-  // 20.2.2.8 Math.atan2 ( y, x )
+  if (list === listener ||
+      (isFunction(list.listener) && list.listener === listener)) {
+    delete this._events[type];
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
 
-  // 20.2.2.9 Math.cbrt ( x )
-  define(
-    Math, 'cbrt',
-    function cbrt(x) {
-      x = Number(x);
-      if ($isNaN(x/x)) {
-        return x;
+  } else if (isObject(list)) {
+    for (i = length; i-- > 0;) {
+      if (list[i] === listener ||
+          (list[i].listener && list[i].listener === listener)) {
+        position = i;
+        break;
       }
-      var r = pow(abs(x), 1/3);
-      var t = x/r/r;
-      return r + (r * (t-r) / (2*r + t));
-    });
+    }
 
-  // 20.2.2.10 Math.ceil ( x )
+    if (position < 0)
+      return this;
 
-  // 20.2.2.11 Math.clz32 ( x )
-  define(
-    Math, 'clz32',
-    function clz32(x) {
-      function clz8(x) {
-        return (x & 0xf0) ? (x & 0x80 ? 0 : x & 0x40 ? 1 : x & 0x20 ? 2 : 3) :
-        (x & 0x08 ? 4 : x & 0x04 ? 5 : x & 0x02 ? 6 : x & 0x01 ? 7 : 8);
-      }
-      x = ToUint32(x);
-      return x & 0xff000000 ? clz8(x >> 24) :
-        x & 0xff0000 ? clz8(x >> 16) + 8 :
-        x & 0xff00 ? clz8(x >> 8) + 16 : clz8(x) + 24;
-    });
+    if (list.length === 1) {
+      list.length = 0;
+      delete this._events[type];
+    } else {
+      list.splice(position, 1);
+    }
 
+    if (this._events.removeListener)
+      this.emit('removeListener', type, listener);
+  }
 
+  return this;
+};
 
-  // 20.2.2.12 Math.cos ( x )
+EventEmitter.prototype.removeAllListeners = function(type) {
+  var key, listeners;
 
-  // 20.2.2.13 Math.cosh ( x )
-  define(
-    Math, 'cosh',
-    function cosh(x) {
-      x = Number(x);
-      return (pow(E, x) + pow(E, -x)) / 2;
-    });
+  if (!this._events)
+    return this;
 
-  // 20.2.2.14 Math.exp ( x )
+  // not listening for removeListener, no need to emit
+  if (!this._events.removeListener) {
+    if (arguments.length === 0)
+      this._events = {};
+    else if (this._events[type])
+      delete this._events[type];
+    return this;
+  }
+
+  // emit removeListener for all listeners on all events
+  if (arguments.length === 0) {
+    for (key in this._events) {
+      if (key === 'removeListener') continue;
+      this.removeAllListeners(key);
+    }
+    this.removeAllListeners('removeListener');
+    this._events = {};
+    return this;
+  }
+
+  listeners = this._events[type];
 
-  // 20.2.2.15 Math.expm1 ( x )
-  define(
-    Math, 'expm1',
-    function expm1(x) {
-      x = Number(x);
-      // from: http://www.johndcook.com/cpp_log1p.html
-      if (SameValue(x, -0)) {
-        return -0;
-      } else if (abs(x) < 1e-5) {
-        return x + 0.5 * x * x; // two terms of Taylor expansion
-      } else {
-        return exp(x) - 1;
-      }
-    });
+  if (isFunction(listeners)) {
+    this.removeListener(type, listeners);
+  } else if (listeners) {
+    // LIFO order
+    while (listeners.length)
+      this.removeListener(type, listeners[listeners.length - 1]);
+  }
+  delete this._events[type];
 
-  // 20.2.2.16 Math.floor ( x )
+  return this;
+};
 
-  // 20.2.2.17 Math.fround ( x )
-  define(
-    Math, 'fround',
-    function fround(x) {
-      if ($isNaN(x)) {
-        return NaN;
-      }
-      if (1/x === +Infinity || 1/x === -Infinity || x === +Infinity || x === -Infinity) {
-        return x;
-      }
-      return (new Float32Array([x]))[0];
-    });
+EventEmitter.prototype.listeners = function(type) {
+  var ret;
+  if (!this._events || !this._events[type])
+    ret = [];
+  else if (isFunction(this._events[type]))
+    ret = [this._events[type]];
+  else
+    ret = this._events[type].slice();
+  return ret;
+};
 
-  // 20.2.2.18 Math.hypot ( value1 [, value2 [ ... ] ] )
-  define(
-    Math, 'hypot',
-    function hypot() {
-      var values = [];
-      var m = 0, sawNaN = false;
-      for (var i = 0; i < arguments.length; ++i) {
-        var n = abs(Number(arguments[i]));
-        if (n === Infinity) return n;
-        if (n !== n) sawNaN = true;
-        if (n > m) m = n;
-        values[i] = n;
-      }
-      if (sawNaN) return NaN;
-      if (m === 0) return +0;
-      var sum = +0;
-      for (i = 0; i < values.length; ++i) {
-        var r = values[i] / m;
-        sum = sum + r * r;
-      }
-      return m * sqrt(sum);
-    });
+EventEmitter.prototype.listenerCount = function(type) {
+  if (this._events) {
+    var evlistener = this._events[type];
 
-  // 20.2.2.19 Math.imul ( x, y )
-  define(
-    Math, 'imul',
-    function imul(x, y) {
-      var a = ToUint32(x);
-      var b = ToUint32(y);
-      // (slow but accurate)
-      var ah  = (a >>> 16) & 0xffff;
-      var al = a & 0xffff;
-      var bh  = (b >>> 16) & 0xffff;
-      var bl = b & 0xffff;
-      return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
-    }, ('imul' in Math && Math.imul(1, 0x80000000) === 0) // Safari 7 bug
-  );
+    if (isFunction(evlistener))
+      return 1;
+    else if (evlistener)
+      return evlistener.length;
+  }
+  return 0;
+};
 
-  // 20.2.2.20 Math.log ( x )
+EventEmitter.listenerCount = function(emitter, type) {
+  return emitter.listenerCount(type);
+};
 
-  // 20.2.2.21 Math.log1p ( x )
-  define(
-    Math, 'log1p',
-    function log1p(x) {
-      x = Number(x);
-      // from: http://www.johndcook.com/cpp_expm1.html
-      if (x < -1) {
-        return NaN;
-      } else if (SameValue(x, -0)) {
-        return -0;
-      } else if (abs(x) > 1e-4) {
-        return log(1 + x);
-      } else {
-        return (-0.5 * x + 1) * x;
-      }
-    });
+function isFunction(arg) {
+  return typeof arg === 'function';
+}
 
-  // 20.2.2.22 Math.log10 ( x )
-  define(
-    Math, 'log10',
-    function log10(x) {
-      x = Number(x);
-      return log(x) * LOG10E;
-    });
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
 
-  // 20.2.2.23 Math.log2 ( x )
-  define(
-    Math, 'log2',
-    function log2(x) {
-      x = Number(x);
-      return log(x) * LOG2E;
-    });
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
+}
 
-  // 20.2.2.24 Math.max ( value1, value2 , ...values )
-  // 20.2.2.25 Math.min ( value1, value2 , ...values )
-  // 20.2.2.26 Math.pow ( x, y )
-  // 20.2.2.27 Math.random ( )
-  // 20.2.2.28 Math.round ( x )
+function isUndefined(arg) {
+  return arg === void 0;
+}
 
-  // 20.2.2.29 Math.sign(x)
-  define(
-    Math, 'sign',
-    function sign(x) {
-      x = Number(x);
-      return x < 0 ? -1 : x > 0 ? 1 : x;
-    });
+},{}],8:[function(require,module,exports){
+exports.read = function (buffer, offset, isLE, mLen, nBytes) {
+  var e, m
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var nBits = -7
+  var i = isLE ? (nBytes - 1) : 0
+  var d = isLE ? -1 : 1
+  var s = buffer[offset + i]
 
-  // 20.2.2.30 Math.sin ( x )
+  i += d
 
-  // 20.2.2.31 Math.sinh( x )
-  define(
-    Math, 'sinh',
-    function sinh(x) {
-      x = Number(x);
-      return SameValue(x, -0) ? x : (pow(E, x) - pow(E, -x)) / 2;
-    });
+  e = s & ((1 << (-nBits)) - 1)
+  s >>= (-nBits)
+  nBits += eLen
+  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
 
-  // 20.2.2.32 Math.sqrt ( x )
-  // 20.2.2.33 Math.tan ( x )
+  m = e & ((1 << (-nBits)) - 1)
+  e >>= (-nBits)
+  nBits += mLen
+  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
 
-  // 20.2.2.34 Math.tanh ( x )
-  define(
-    Math, 'tanh',
-    function tanh(x) {
-      x = Number(x);
-      var n = pow(E, 2 * x) - 1,
-          d = pow(E, 2 * x) + 1;
-      if (SameValue(x, -0))
-        return x;
-      return (n === d) ? 1 : n / d; // Handle Infinity/Infinity
-    });
+  if (e === 0) {
+    e = 1 - eBias
+  } else if (e === eMax) {
+    return m ? NaN : ((s ? -1 : 1) * Infinity)
+  } else {
+    m = m + Math.pow(2, mLen)
+    e = e - eBias
+  }
+  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+}
 
-  // 20.2.2.35 Math.trunc ( x )
-  define(
-    Math, 'trunc',
-    function trunc(x) {
-      x = Number(x);
-      return $isNaN(x) ? NaN :
-        x < 0 ? ceil(x) : floor(x);
-    });
+exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
+  var e, m, c
+  var eLen = nBytes * 8 - mLen - 1
+  var eMax = (1 << eLen) - 1
+  var eBias = eMax >> 1
+  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
+  var i = isLE ? 0 : (nBytes - 1)
+  var d = isLE ? 1 : -1
+  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
 
-  // ---------------------------------------
-  // 20.3 Date Objects
-  // ---------------------------------------
+  value = Math.abs(value)
 
-  // 20.3.1 Overview of Date Objects and Definitions of Abstract Operations
-  // 20.3.1.1 Time Values and Time Range
-  // 20.3.1.2 Day Number and Time within Day
-  // 20.3.1.3 Year Number
-  // 20.3.1.4 Month Number
-  // 20.3.1.5 Date Number
-  // 20.3.1.6 Week Day
-  // 20.3.1.7 Local Time Zone Adjustment
-  // 20.3.1.8 Daylight Saving Time Adjustment
-  // 20.3.1.9 Local Time
-  // 20.3.1.10 Hours, Minutes, Second, and Milliseconds
-  // 20.3.1.11 MakeTime (hour, min, sec, ms)
-  // 20.3.1.12 MakeDay (year, month, date)
-  // 20.3.1.13 MakeDate (day, time)
-  // 20.3.1.14 TimeClip (time)
-  // 20.3.1.15 Date Time String Format
-  // 20.3.1.15.1 Extended years
-  // 20.3.2 The Date Constructor
-  // 20.3.2.1 Date ( year, month [, date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] )
-  // 20.3.2.2 Date ( value )
-  // 20.3.2.3 Date ( )
-  // 20.3.3 Properties of the Date Constructor
-  // 20.3.3.1 Date.now ( )
-  // 20.3.3.2 Date.parse (string)
-  // 20.3.3.3 Date.prototype
-  // 20.3.3.4 Date.UTC ( year, month [ , date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] )
-  // 20.3.4 Properties of the Date Prototype Object
-  // 20.3.4.1 Date.prototype.constructor
-  // 20.3.4.2 Date.prototype.getDate ( )
-  // 20.3.4.3 Date.prototype.getDay ( )
-  // 20.3.4.4 Date.prototype.getFullYear ( )
-  // 20.3.4.5 Date.prototype.getHours ( )
-  // 20.3.4.6 Date.prototype.getMilliseconds ( )
-  // 20.3.4.7 Date.prototype.getMinutes ( )
-  // 20.3.4.8 Date.prototype.getMonth ( )
-  // 20.3.4.9 Date.prototype.getSeconds ( )
-  // 20.3.4.10 Date.prototype.getTime ( )
-  // 20.3.4.11 Date.prototype.getTimezoneOffset ( )
-  // 20.3.4.12 Date.prototype.getUTCDate ( )
-  // 20.3.4.13 Date.prototype.getUTCDay ( )
-  // 20.3.4.14 Date.prototype.getUTCFullYear ( )
-  // 20.3.4.15 Date.prototype.getUTCHours ( )
-  // 20.3.4.16 Date.prototype.getUTCMilliseconds ( )
-  // 20.3.4.17 Date.prototype.getUTCMinutes ( )
-  // 20.3.4.18 Date.prototype.getUTCMonth ( )
-  // 20.3.4.19 Date.prototype.getUTCSeconds ( )
-  // 20.3.4.20 Date.prototype.setDate ( date )
-  // 20.3.4.21 Date.prototype.setFullYear ( year [ , month [ , date ] ] )
-  // 20.3.4.22 Date.prototype.setHours ( hour [ , min [ , sec [ , ms ] ] ] )
-  // 20.3.4.23 Date.prototype.setMilliseconds ( ms )
-  // 20.3.4.24 Date.prototype.setMinutes ( min [ , sec [ , ms ] ] )
-  // 20.3.4.25 Date.prototype.setMonth ( month [ , date ] )
-  // 20.3.4.26 Date.prototype.setSeconds ( sec [ , ms ] )
-  // 20.3.4.27 Date.prototype.setTime ( time )
-  // 20.3.4.28 Date.prototype.setUTCDate ( date )
-  // 20.3.4.29 Date.prototype.setUTCFullYear ( year [ , month [ , date ] ] )
-  // 20.3.4.30 Date.prototype.setUTCHours ( hour [ , min [ , sec [ , ms ] ] ] )
-  // 20.3.4.31 Date.prototype.setUTCMilliseconds ( ms )
-  // 20.3.4.32 Date.prototype.setUTCMinutes ( min [ , sec [, ms ] ] )
-  // 20.3.4.33 Date.prototype.setUTCMonth ( month [ , date ] )
-  // 20.3.4.34 Date.prototype.setUTCSeconds ( sec [ , ms ] )
-  // 20.3.4.35 Date.prototype.toDateString ( )
-  // 20.3.4.36 Date.prototype.toISOString ( )
-  // 20.3.4.37 Date.prototype.toJSON ( key )
-  // 20.3.4.38 Date.prototype.toLocaleDateString ( [ reserved1 [ , reserved2 ] ] )
-  // 20.3.4.39 Date.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
-  // 20.3.4.40 Date.prototype.toLocaleTimeString ( [ reserved1 [ , reserved2 ] ] )
-  // 20.3.4.41 Date.prototype.toString ( )
-  // 20.3.4.42 Date.prototype.toTimeString ( )
-  // 20.3.4.43 Date.prototype.toUTCString ( )
-  // 20.3.4.44 Date.prototype.valueOf ( )
-  // 20.3.4.45 Date.prototype [ @@toPrimitive ] ( hint )
-  // 20.3.5 Properties of Date Instances
+  if (isNaN(value) || value === Infinity) {
+    m = isNaN(value) ? 1 : 0
+    e = eMax
+  } else {
+    e = Math.floor(Math.log(value) / Math.LN2)
+    if (value * (c = Math.pow(2, -e)) < 1) {
+      e--
+      c *= 2
+    }
+    if (e + eBias >= 1) {
+      value += rt / c
+    } else {
+      value += rt * Math.pow(2, 1 - eBias)
+    }
+    if (value * c >= 2) {
+      e++
+      c /= 2
+    }
 
-  // (No polyfillable changes from ES5)
+    if (e + eBias >= eMax) {
+      m = 0
+      e = eMax
+    } else if (e + eBias >= 1) {
+      m = (value * c - 1) * Math.pow(2, mLen)
+      e = e + eBias
+    } else {
+      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
+      e = 0
+    }
+  }
 
-  // ---------------------------------------
-  // 21 Text Processing
-  // ---------------------------------------
+  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
 
-  var string_regexp_dispatch = (function() {
-    var faux = {}, secret = Symbol();
-    faux[Symbol.match] = function() { return secret; };
-    return ("").match(faux) === secret;
-  }());
+  e = (e << mLen) | m
+  eLen += mLen
+  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
 
-  // 21.1 String Objects
-  // 21.1.1 The String Constructor
-  // 21.1.1.1 String ( value )
-  // 21.1.2 Properties of the String Constructor
-  // 21.1.2.1 String.fromCharCode ( ...codeUnits )
+  buffer[offset + i - d] |= s * 128
+}
 
-  // 21.1.2.2 String.fromCodePoint ( ...codePoints )
-  define(
-    String, 'fromCodePoint',
-    function fromCodePoint(/*...codePoints*/) {
-      var codePoints = arguments,
-          length = codePoints.length,
-          elements = [],
-          nextIndex = 0;
-      while (nextIndex < length) {
-        var next = codePoints[nextIndex];
-        var nextCP = Number(next);
-        if (!SameValue(nextCP, ToInteger(nextCP)) ||
-            nextCP < 0 || nextCP > 0x10FFFF) {
-          throw RangeError('Invalid code point ' + nextCP);
-        }
-        if (nextCP < 0x10000) {
-          elements.push(String.fromCharCode(nextCP));
-        } else {
-          nextCP -= 0x10000;
-          elements.push(String.fromCharCode((nextCP >> 10) + 0xD800));
-          elements.push(String.fromCharCode((nextCP % 0x400) + 0xDC00));
-        }
-        nextIndex += 1;
+},{}],9:[function(require,module,exports){
+if (typeof Object.create === 'function') {
+  // implementation from standard node.js 'util' module
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    ctor.prototype = Object.create(superCtor.prototype, {
+      constructor: {
+        value: ctor,
+        enumerable: false,
+        writable: true,
+        configurable: true
       }
-      return elements.join('');
     });
+  };
+} else {
+  // old school shim for old browsers
+  module.exports = function inherits(ctor, superCtor) {
+    ctor.super_ = superCtor
+    var TempCtor = function () {}
+    TempCtor.prototype = superCtor.prototype
+    ctor.prototype = new TempCtor()
+    ctor.prototype.constructor = ctor
+  }
+}
 
-  // 21.1.2.3 String.prototype
+},{}],10:[function(require,module,exports){
+/*!
+ * Determine if an object is a Buffer
+ *
+ * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ * @license  MIT
+ */
 
-  // 21.1.2.4 String.raw ( template , ...substitutions )
-  define(
-    String, 'raw',
-    function raw(template /*, ...substitutions*/) {
-      var substitutions = [].slice.call(arguments, 1);
+// The _isBuffer check is for Safari 5-7 support, because it's missing
+// Object.prototype.constructor. Remove this eventually
+module.exports = function (obj) {
+  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
+}
 
-      var cooked = Object(template);
-      var rawValue = cooked['raw'];
-      var raw = Object(rawValue);
-      var len = raw['length'];
-      var literalSegments = ToLength(len);
-      if (literalSegments <= 0) return '';
-      var stringElements = [];
-      var nextIndex = 0;
-      while (true) {
-        var next = raw[nextIndex];
-        var nextSeg = String(next);
-        stringElements.push(nextSeg);
-        if (nextIndex + 1 === literalSegments)
-          return stringElements.join('');
-        next = substitutions[nextIndex];
-        var nextSub = String(next);
-        stringElements.push(nextSub);
-        nextIndex = nextIndex + 1;
-      }
-    });
+function isBuffer (obj) {
+  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
+}
 
-  // See https://githib.com/inexorabletash/uate for a more useful version.
+// For Node v0.10 support. Remove this eventually.
+function isSlowBuffer (obj) {
+  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
+}
 
-  // 21.1.3 Properties of the String Prototype Object
-  // 21.1.3.1 String.prototype.charAt ( pos )
-  // 21.1.3.2 String.prototype.charCodeAt ( pos )
+},{}],11:[function(require,module,exports){
+var toString = {}.toString;
 
-  // 21.1.3.3 String.prototype.codePointAt ( pos )
-  define(
-    String.prototype, 'codePointAt',
-    function codePointAt(pos) {
-      var o = strict(this);
-      var s = String(o);
-      var position = ToInteger(pos);
-      var size = s.length;
-      if (position < 0 || position >= size) return undefined;
-      var first = s.charCodeAt(position);
-      if (first < 0xD800 || first > 0xDBFF || position + 1 === size) return first;
-      var second = s.charCodeAt(position + 1);
-      if (second < 0xDC00 || second > 0xDFFF) return first;
-      return ((first - 0xD800) * 1024) + (second - 0xDC00) + 0x10000;
-    });
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
 
-  // 21.1.3.4 String.prototype.concat ( ...args )
-  // 21.1.3.5 String.prototype.constructor
+},{}],12:[function(require,module,exports){
+(function (process){
+'use strict';
 
-  // 21.1.3.6 String.prototype.endsWith ( searchString [ , endPosition] )
-  define(
-    String.prototype, 'endsWith',
-    function endsWith(searchString) {
-      var endPosition = arguments[1];
+if (!process.version ||
+    process.version.indexOf('v0.') === 0 ||
+    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
+  module.exports = nextTick;
+} else {
+  module.exports = process.nextTick;
+}
 
-      var o = strict(this);
-      var s = String(o);
-      var searchStr = String(searchString);
-      var len = s.length;
-      var pos = (endPosition === undefined) ? len : ToInteger(endPosition);
-      var end = min(max(pos, 0), len);
-      var searchLength = searchStr.length;
-      var start = end - searchLength;
-      if (start < 0) return false;
-      if (s.substring(start, start + searchLength) === searchStr) return true;
-      return false;
+function nextTick(fn, arg1, arg2, arg3) {
+  if (typeof fn !== 'function') {
+    throw new TypeError('"callback" argument must be a function');
+  }
+  var len = arguments.length;
+  var args, i;
+  switch (len) {
+  case 0:
+  case 1:
+    return process.nextTick(fn);
+  case 2:
+    return process.nextTick(function afterTickOne() {
+      fn.call(null, arg1);
+    });
+  case 3:
+    return process.nextTick(function afterTickTwo() {
+      fn.call(null, arg1, arg2);
+    });
+  case 4:
+    return process.nextTick(function afterTickThree() {
+      fn.call(null, arg1, arg2, arg3);
+    });
+  default:
+    args = new Array(len - 1);
+    i = 0;
+    while (i < args.length) {
+      args[i++] = arguments[i];
+    }
+    return process.nextTick(function afterTick() {
+      fn.apply(null, args);
     });
+  }
+}
 
-  // 21.1.3.7 String.prototype.includes ( searchString [ , position ] )
-  define(
-    String.prototype, 'includes',
-    function includes(searchString) {
-      var position = arguments[1];
+}).call(this,require('_process'))
+},{"_process":13}],13:[function(require,module,exports){
+// shim for using process in browser
+var process = module.exports = {};
 
-      var o = strict(this);
-      var s = String(o);
-      var searchStr = String(searchString);
-      var pos = ToInteger(position);
-      var len = s.length;
-      var start = min(max(pos, 0), len);
-      return s.indexOf(searchStr, start) !== -1;
-    });
+// cached from whatever global is present so that test runners that stub it
+// don't break things.  But we need to wrap it in a try catch in case it is
+// wrapped in strict mode code which doesn't define any globals.  It's inside a
+// function because try/catches deoptimize in certain engines.
 
-  // 21.1.3.8 String.prototype.indexOf ( searchString [ , position ] )
-  // 21.1.3.9 String.prototype.lastIndexOf ( searchString [ , position ] )
-  // 21.1.3.10 String.prototype.localeCompare ( that [, reserved1 [ , reserved2 ] ] )
-  // 21.1.3.11 String.prototype.match ( regexp )
-  define(
-    String.prototype, 'match',
-    function match(regexp) {
-      var o = strict(this);
-      var s = String(o);
-      if (HasProperty(regexp, $$match)) var rx = regexp;
-      else rx = new RegExp(regexp);
-      return rx[$$match](s);
-    }, !string_regexp_dispatch);
+var cachedSetTimeout;
+var cachedClearTimeout;
 
-  // 21.1.3.12 String.prototype.normalize ( [ form ] )
+function defaultSetTimout() {
+    throw new Error('setTimeout has not been defined');
+}
+function defaultClearTimeout () {
+    throw new Error('clearTimeout has not been defined');
+}
+(function () {
+    try {
+        if (typeof setTimeout === 'function') {
+            cachedSetTimeout = setTimeout;
+        } else {
+            cachedSetTimeout = defaultSetTimout;
+        }
+    } catch (e) {
+        cachedSetTimeout = defaultSetTimout;
+    }
+    try {
+        if (typeof clearTimeout === 'function') {
+            cachedClearTimeout = clearTimeout;
+        } else {
+            cachedClearTimeout = defaultClearTimeout;
+        }
+    } catch (e) {
+        cachedClearTimeout = defaultClearTimeout;
+    }
+} ())
+function runTimeout(fun) {
+    if (cachedSetTimeout === setTimeout) {
+        //normal enviroments in sane situations
+        return setTimeout(fun, 0);
+    }
+    // if setTimeout wasn't available but was latter defined
+    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
+        cachedSetTimeout = setTimeout;
+        return setTimeout(fun, 0);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedSetTimeout(fun, 0);
+    } catch(e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
+            return cachedSetTimeout.call(null, fun, 0);
+        } catch(e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
+            return cachedSetTimeout.call(this, fun, 0);
+        }
+    }
 
-  // Not practical due to table sizes; if needed, pull in:
-  // https://github.com/walling/unorm/
 
-  // 21.1.3.13 String.prototype.repeat ( count )
-  define(
-    String.prototype, 'repeat',
-    function repeat(count) {
-      var o = strict(this);
-      var s = String(o);
-      var n = ToInteger(count);
-      if (n < 0) throw RangeError();
-      if (n === Infinity) throw RangeError();
-      var t = new Array(n + 1).join(s);
-      return t;
-    });
+}
+function runClearTimeout(marker) {
+    if (cachedClearTimeout === clearTimeout) {
+        //normal enviroments in sane situations
+        return clearTimeout(marker);
+    }
+    // if clearTimeout wasn't available but was latter defined
+    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
+        cachedClearTimeout = clearTimeout;
+        return clearTimeout(marker);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedClearTimeout(marker);
+    } catch (e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
+            return cachedClearTimeout.call(null, marker);
+        } catch (e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
+            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
+            return cachedClearTimeout.call(this, marker);
+        }
+    }
 
-  // 21.1.3.14 String.prototype.replace (searchValue, replaceValue )
-  define(
-    String.prototype, 'replace',
-    function replace(searchValue, replaceValue) {
-      var o = strict(this);
-      if (HasProperty(searchValue, $$replace))
-        return searchValue[$$replace](o, replaceValue);
-      return orig_replace.call(o, searchValue, replaceValue);
-    }, !string_regexp_dispatch);
 
-  // 21.1.3.15 String.prototype.search ( regexp )
-  define(
-    String.prototype, 'search',
-    function search(regexp) {
-      var o = strict(this);
-      var string = String(o);
-      if (HasProperty(regexp, $$search)) var rx = regexp;
-      else rx = new RegExp(regexp);
-      return rx[$$search](string);
-    }, !string_regexp_dispatch);
 
-  // 21.1.3.16 String.prototype.slice ( start, end )
-  // 21.1.3.17 String.prototype.split ( separator, limit )
-  define(
-    String.prototype, 'split',
-    function split(separator, limit) {
-      var o = strict(this);
-      if (HasProperty(separator, $$split))
-        return separator[$$split](o, limit);
-      return orig_split.call(o, separator, limit);
-    }, !string_regexp_dispatch);
+}
+var queue = [];
+var draining = false;
+var currentQueue;
+var queueIndex = -1;
 
-  // 21.1.3.18 String.prototype.startsWith ( searchString [, position ] )
-  define(
-    String.prototype, 'startsWith',
-    function startsWith(searchString) {
-      var position = arguments[1];
+function cleanUpNextTick() {
+    if (!draining || !currentQueue) {
+        return;
+    }
+    draining = false;
+    if (currentQueue.length) {
+        queue = currentQueue.concat(queue);
+    } else {
+        queueIndex = -1;
+    }
+    if (queue.length) {
+        drainQueue();
+    }
+}
 
-      var o = strict(this);
-      var s = String(o);
-      var searchStr = String(searchString);
-      var pos = ToInteger(position);
-      var len = s.length;
-      var start = min(max(pos, 0), len);
-      var searchLength = searchStr.length;
-      if (searchLength + start > len) return false;
-      if (s.substring(start, start + searchLength) === searchStr) return true;
-      return false;
-    });
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    var timeout = runTimeout(cleanUpNextTick);
+    draining = true;
 
-  // 21.1.3.19 String.prototype.substring ( start, end )
-  // 21.1.3.20 String.prototype.toLocaleLowerCase ( [ reserved1 [ , reserved2 ] ] )
-  // 21.1.3.21 String.prototype.toLocaleUpperCase ([ reserved1 [ , reserved2 ] ] )
-  // 21.1.3.22 String.prototype.toLowerCase ( )
-  // 21.1.3.23 String.prototype.toString ( )
-  // 21.1.3.24 String.prototype.toUpperCase ( )
-  // 21.1.3.25 String.prototype.trim ( )
-  // 21.1.3.26 String.prototype.valueOf ( )
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        while (++queueIndex < len) {
+            if (currentQueue) {
+                currentQueue[queueIndex].run();
+            }
+        }
+        queueIndex = -1;
+        len = queue.length;
+    }
+    currentQueue = null;
+    draining = false;
+    runClearTimeout(timeout);
+}
 
-  // 21.1.3.27 String.prototype [ @@iterator ]( )
-  define(
-    String.prototype, $$iterator,
-    function entries() {
-      return CreateStringIterator(this, 'value');
-    });
+process.nextTick = function (fun) {
+    var args = new Array(arguments.length - 1);
+    if (arguments.length > 1) {
+        for (var i = 1; i < arguments.length; i++) {
+            args[i - 1] = arguments[i];
+        }
+    }
+    queue.push(new Item(fun, args));
+    if (queue.length === 1 && !draining) {
+        runTimeout(drainQueue);
+    }
+};
 
-  // 21.1.4 Properties of String Instances
-  // 21.1.4.1 length
+// v8 likes predictible objects
+function Item(fun, array) {
+    this.fun = fun;
+    this.array = array;
+}
+Item.prototype.run = function () {
+    this.fun.apply(null, this.array);
+};
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
 
-  // 21.1.5 String Iterator Objects
-  /** @constructor */
-  function StringIterator() {}
+function noop() {}
 
-  // 21.1.5.1 CreateStringIterator Abstract Operation
-  function CreateStringIterator(string, kind) {
-    var s = String(string);
-    var iterator = new StringIterator;
-    set_internal(iterator, '[[IteratedString]]', s);
-    set_internal(iterator, '[[StringIteratorNextIndex]]', 0);
-    set_internal(iterator, '[[StringIterationKind]]', kind);
-    return iterator;
-  }
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+process.prependListener = noop;
+process.prependOnceListener = noop;
 
-  // 21.1.5.2 The %StringIteratorPrototype% Object
-  var $StringIteratorPrototype$ = Object.create($IteratorPrototype$);
-  StringIterator.prototype = $StringIteratorPrototype$;
+process.listeners = function (name) { return [] }
 
-  // 21.1.5.2.1 %StringIteratorPrototype%.next ( )
-  define(
-    $StringIteratorPrototype$, 'next',
-    function next() {
-      var o = ToObject(this);
-      var s = String(o['[[IteratedString]]']),
-          index = o['[[StringIteratorNextIndex]]'],
-          len = s.length;
-      if (index >= len) {
-        set_internal(o, '[[StringIteratorNextIndex]]', Infinity);
-        return CreateIterResultObject(undefined, true);
-      }
-      var cp = s.codePointAt(index);
-      set_internal(o, '[[StringIteratorNextIndex]]', index + (cp > 0xFFFF ? 2 : 1));
-      return CreateIterResultObject(String.fromCodePoint(cp), false);
-    });
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
 
-  // 21.1.5.2.2 %StringIteratorPrototype% [ @@toStringTag ]
-  define($StringIteratorPrototype$, $$toStringTag, 'String Iterator');
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
 
-  // 21.1.5.3 Properties of String Iterator Instances
+},{}],14:[function(require,module,exports){
+module.exports = require('./lib/_stream_duplex.js');
 
-  // ---------------------------------------
-  // 21.2 RegExp (Regular Expression) Objects
-  // ---------------------------------------
+},{"./lib/_stream_duplex.js":15}],15:[function(require,module,exports){
+// a duplex stream is just a stream that is both readable and writable.
+// Since JS doesn't have multiple prototypal inheritance, this class
+// prototypally inherits from Readable, and then parasitically from
+// Writable.
 
-  // 21.2.1 Patterns
-  // 21.2.2 Pattern Semantics
-  // 21.2.2.1 Notation
-  // 21.2.2.2 Pattern
-  // 21.2.2.3 Disjunction
-  // 21.2.2.4 Alternative
-  // 21.2.2.5 Term
-  // 21.2.2.6 Assertion
-  // 21.2.2.7 Quantifier
-  // 21.2.2.8 Atom
-  // 21.2.2.9 AtomEscape
-  // 21.2.2.10 CharacterEscape
-  // 21.2.2.11 DecimalEscape
-  // 21.2.2.12 CharacterClassEscape
-  // 21.2.2.13 CharacterClass
-  // 21.2.2.14 ClassRanges
-  // 21.2.2.15 NonemptyClassRanges
-  // 21.2.2.16 NonemptyClassRangesNoDash
-  // 21.2.2.17 ClassAtom
-  // 21.2.2.18 ClassAtomNoDash
-  // 21.2.2.19 ClassEscape
-  // 21.2.3 The RegExp Constructor
-  // 21.2.3.1 RegExp ( pattern, flags )
-  // 21.2.3.2 new RegExp( ...argumentsList )
-  // 21.2.3.3 Abstract Operations for the RegExp Constructor
-  // 21.2.4 Properties of the RegExp Constructor
-  // 21.2.4.1 RegExp.prototype
-  // 21.2.5 Properties of the RegExp Prototype Object
-  // 21.2.5.1 RegExp.prototype.constructor
-  // 21.2.5.2 RegExp.prototype.exec ( string )
+'use strict';
 
-  // 21.2.5.3 get RegExp.prototype.flags
-  if (!('flags' in RegExp.prototype)) {
-    Object.defineProperty(
-      RegExp.prototype, 'flags', {
-        get: function() {
-          var s = String(this);
-          return s.substring(s.lastIndexOf('/') + 1);
-        }
-      });
-  }
+/*<replacement>*/
 
-  // 21.2.5.4 get RegExp.prototype.global
-  // 21.2.5.5 get RegExp.prototype.ignoreCase
+var objectKeys = Object.keys || function (obj) {
+  var keys = [];
+  for (var key in obj) {
+    keys.push(key);
+  }return keys;
+};
+/*</replacement>*/
 
-  // 21.2.5.6 RegExp.prototype [ @@match ] ( string )
-  define(RegExp.prototype, $$match, function(string) {
-    var o = strict(this);
-    return orig_match.call(string, o);
-  });
+module.exports = Duplex;
 
-  // 21.2.5.7 get RegExp.prototype.multiline
+/*<replacement>*/
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
-  // 21.2.5.8 RegExp.prototype [ @@replace ] ( string, replaceValue )
-  define(RegExp.prototype, $$replace, function(string, replaceValue) {
-    var o = strict(this);
-    return orig_replace.call(string, o, replaceValue);
-  });
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-  // 21.2.5.9 RegExp.prototype [ @@search ] ( string )
-  define(RegExp.prototype, $$search, function(string) {
-    var o = strict(this);
-    return orig_search.call(string, o);
-  });
+var Readable = require('./_stream_readable');
+var Writable = require('./_stream_writable');
 
-  // 21.2.5.10 get RegExp.prototype.source
+util.inherits(Duplex, Readable);
 
-  // 21.2.5.11 RegExp.prototype [ @@split ] ( string, limit )
-  define(RegExp.prototype, $$split, function(string, limit) {
-    var o = strict(this);
-    return orig_split.call(string, o, limit);
-  });
+var keys = objectKeys(Writable.prototype);
+for (var v = 0; v < keys.length; v++) {
+  var method = keys[v];
+  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+}
 
-  // 21.2.5.12 get RegExp.prototype.sticky
-  // 21.2.5.13 RegExp.prototype.test( S )
-  // 21.2.5.14 RegExp.prototype.toString ( )
-  // 21.2.5.15 get RegExp.prototype.unicode
+function Duplex(options) {
+  if (!(this instanceof Duplex)) return new Duplex(options);
 
-  // 21.2.6 Properties of RegExp Instances
-  // 21.2.6.1 lastIndex
+  Readable.call(this, options);
+  Writable.call(this, options);
 
-  // (No polyfillable changes from ES5)
+  if (options && options.readable === false) this.readable = false;
 
-  // ---------------------------------------
-  // 22 Indexed Collections
-  // ---------------------------------------
+  if (options && options.writable === false) this.writable = false;
 
-  // ---------------------------------------
-  // 22.1 Array Objects
-  // ---------------------------------------
+  this.allowHalfOpen = true;
+  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
 
-  // 22.1.1 The Array Constructor
-  // 22.1.1.1 Array ( )
-  // 22.1.1.2 Array (len)
-  // 22.1.1.3 Array (...items )
+  this.once('end', onend);
+}
 
-  // 22.1.2 Properties of the Array Constructor
+// the no-half-open enforcer
+function onend() {
+  // if we allow half-open state, or if the writable side ended,
+  // then we're ok.
+  if (this.allowHalfOpen || this._writableState.ended) return;
 
-  // 22.1.2.1 Array.from ( items [ , mapfn [ , thisArg ] ] )
-  define(
-    Array, 'from',
-    function from(items) {
-      var mapfn = arguments[1];
-      var thisArg = arguments[2];
+  // no more data can be written.
+  // But allow more writes to happen in this tick.
+  processNextTick(onEndNT, this);
+}
 
-      var c = strict(this);
-      if (mapfn === undefined) {
-        var mapping = false;
-      } else {
-        if (!IsCallable(mapfn)) throw TypeError();
-        var t = thisArg;
-        mapping = true;
-      }
-      var usingIterator = GetMethod(items, $$iterator);
-      if (usingIterator !== undefined) {
-         if (IsConstructor(c)) {
-          var a = new c();
-        } else {
-          a = new Array(0);
-        }
-        var iterator = GetIterator(items, usingIterator);
-        var k = 0;
-        while (true) {
-          var next = IteratorStep(iterator);
-          if (next === false) {
-            a.length = k;
-            return a;
-          }
-          var nextValue = IteratorValue(next);
-          if (mapping)
-            var mappedValue = mapfn.call(t, nextValue);
-          else
-            mappedValue = nextValue;
-          a[k] = mappedValue;
-          k += 1;
-        }
-      }
-      var arrayLike = ToObject(items);
-      var lenValue = arrayLike.length;
-      var len = ToLength(lenValue);
-      if (IsConstructor(c)) {
-        a = new c(len);
-      } else {
-        a = new Array(len);
-      }
-      k = 0;
-      while (k < len) {
-        var kValue = arrayLike[k];
-        if (mapping)
-          mappedValue = mapfn.call(t, kValue, k);
-        else
-          mappedValue = kValue;
-        a[k] = mappedValue;
-        k += 1;
-      }
-      a.length = len;
-      return a;
-    });
+function onEndNT(self) {
+  self.end();
+}
+
+function forEach(xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
+  }
+}
+},{"./_stream_readable":17,"./_stream_writable":19,"core-util-is":6,"inherits":9,"process-nextick-args":12}],16:[function(require,module,exports){
+// a passthrough stream.
+// basically just the most minimal sort of Transform stream.
+// Every written chunk gets output as-is.
 
-  // 22.1.2.2 Array.isArray ( arg )
+'use strict';
 
-  // 22.1.2.3 Array.of ( ...items )
-  define(
-    Array, 'of',
-    function of() {
-      var items = arguments;
+module.exports = PassThrough;
 
-      var lenValue = items.length;
-      var len = ToUint32(lenValue);
-      var c = strict(this), a;
-      if (IsConstructor(c)) {
-        a = new c(len);
-        a = ToObject(a);
-      } else {
-        a = new Array(len);
-      }
-      var k = 0;
-      while (k < len) {
-        a[k] = items[k];
-        k += 1;
-      }
-      a.length = len;
-      return a;
-    });
+var Transform = require('./_stream_transform');
 
-  // 22.1.2.4 Array.prototype
-  // 22.1.2.5 get Array [ @@species ]
-  // 22.1.3 Properties of the Array Prototype Object
-  // 22.1.3.1 Array.prototype.concat ( ...arguments )
-  // 22.1.3.1.1 Runtime Semantics: IsConcatSpreadable ( O )
-  // 22.1.3.2 Array.prototype.constructor
-  // 22.1.3.3 Array.prototype.copyWithin (target, start [ , end ] )
-  define(
-    Array.prototype, 'copyWithin',
-    function copyWithin(target, start/*, end*/) {
-      var end = arguments[2];
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-      var o = ToObject(this);
-      var lenVal = o.length;
-      var len = ToLength(lenVal);
-      len = max(len, 0);
-      var relativeTarget = ToInteger(target);
-      var to;
-      if (relativeTarget < 0)
-        to = max(len + relativeTarget, 0);
-      else
-        to = min(relativeTarget, len);
-      var relativeStart = ToInteger(start);
-      var from;
-      if (relativeStart < 0)
-        from = max(len + relativeStart, 0);
-      else
-        from = min(relativeStart, len);
-      var relativeEnd;
-      if (end === undefined)
-        relativeEnd = len;
-      else
-        relativeEnd = ToInteger(end);
-      var final;
-      if (relativeEnd < 0)
-        final = max(len + relativeEnd, 0);
-      else
-        final = min(relativeEnd, len);
-      var count = min(final - from, len - to);
-      var direction;
-      if (from < to && to < from + count) {
-        direction = -1;
-        from = from + count - 1;
-        to = to + count - 1;
-      } else {
-        direction = 1;
-      }
-      while (count > 0) {
-        var fromKey = String(from);
-        var toKey = String(to);
-        var fromPresent = HasProperty(o, fromKey);
-        if (fromPresent) {
-          var fromVal = o[fromKey];
-          o[toKey] = fromVal;
-        } else {
-          delete o[toKey];
-        }
-        from = from + direction;
-        to = to + direction;
-        count = count - 1;
-      }
-      return o;
-    });
+util.inherits(PassThrough, Transform);
 
-  // 22.1.3.4 Array.prototype.entries ( )
-  var nativeArrayIteratorMethods =
-        ('entries' in Array.prototype && 'next' in [].entries());
+function PassThrough(options) {
+  if (!(this instanceof PassThrough)) return new PassThrough(options);
 
-  define(
-    Array.prototype, 'entries',
-    function entries() {
-      return CreateArrayIterator(this, 'key+value');
-    }, !nativeArrayIteratorMethods);
+  Transform.call(this, options);
+}
 
-  // 22.1.3.5 Array.prototype.every ( callbackfn [ , thisArg] )
+PassThrough.prototype._transform = function (chunk, encoding, cb) {
+  cb(null, chunk);
+};
+},{"./_stream_transform":18,"core-util-is":6,"inherits":9}],17:[function(require,module,exports){
+(function (process){
+'use strict';
 
-  // 22.1.3.6 Array.prototype.fill (value [ , start [ , end ] ] )
-  define(
-    Array.prototype, 'fill',
-    function fill(value/*, start, end*/) {
-      var start = arguments[1],
-          end = arguments[2];
+module.exports = Readable;
 
-      var o = ToObject(this);
-      var lenVal = o.length;
-      var len = ToLength(lenVal);
-      len = max(len, 0);
-      var relativeStart = ToInteger(start);
-      var k;
-      if (relativeStart < 0)
-        k = max((len + relativeStart), 0);
-      else
-        k = min(relativeStart, len);
-      var relativeEnd;
-      if (end === undefined)
-        relativeEnd = len;
-      else
-        relativeEnd = ToInteger(end);
-      var final;
-      if (relativeEnd < 0)
-        final = max((len + relativeEnd), 0);
-      else
-        final = min(relativeEnd, len);
-      while (k < final) {
-        var pk = String(k);
-        o[pk] = value;
-        k += 1;
-      }
-      return o;
-    });
+/*<replacement>*/
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
-  // 22.1.3.7 Array.prototype.filter ( callbackfn [ , thisArg ] )
+/*<replacement>*/
+var isArray = require('isarray');
+/*</replacement>*/
 
-  // 22.1.3.8 Array.prototype.find ( predicate [ , thisArg ] )
-  define(
-    Array.prototype, 'find',
-    function find(predicate) {
-      var o = ToObject(this);
-      var lenValue = o.length;
-      var len = ToInteger(lenValue);
-      if (!IsCallable(predicate)) throw TypeError();
-      var t = arguments.length > 1 ? arguments[1] : undefined;
-      var k = 0;
-      while (k < len) {
-        var pk = String(k);
-        var kPresent = HasProperty(o, pk);
-        if (kPresent) {
-          var kValue = o[pk];
-          var testResult = predicate.call(t, kValue, k, o);
-          if (Boolean(testResult)) {
-            return kValue;
-          }
-        }
-        ++k;
-      }
-      return undefined;
-    });
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
 
-  // 22.1.3.9 Array.prototype.findIndex ( predicate [ , thisArg ] )
-  define(
-    Array.prototype, 'findIndex',
-    function findIndex(predicate) {
-      var o = ToObject(this);
-      var lenValue = o.length;
-      var len = ToLength(lenValue);
-      if (!IsCallable(predicate)) throw TypeError();
-      var t = arguments.length > 1 ? arguments[1] : undefined;
-      var k = 0;
-      while (k < len) {
-        var pk = String(k);
-        var kPresent = HasProperty(o, pk);
-        if (kPresent) {
-          var kValue = o[pk];
-          var testResult = predicate.call(t, kValue, k, o);
-          if (Boolean(testResult)) {
-            return k;
-          }
-        }
-        ++k;
-      }
-      return -1;
-    });
+Readable.ReadableState = ReadableState;
 
-  // 22.1.3.10 Array.prototype.forEach ( callbackfn [ , thisArg ] )
-  // 22.1.3.11 Array.prototype.indexOf ( searchElement [ , fromIndex ] )
-  // 22.1.3.12 Array.prototype.join (separator)
+/*<replacement>*/
+var EE = require('events').EventEmitter;
 
-  // 22.1.3.13 Array.prototype.keys ( )
-  define(
-    Array.prototype, 'keys',
-    function keys() {
-      return CreateArrayIterator(this, 'key');
-    }, !nativeArrayIteratorMethods);
+var EElistenerCount = function (emitter, type) {
+  return emitter.listeners(type).length;
+};
+/*</replacement>*/
 
-  // 22.1.3.14 Array.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
-  // 22.1.3.15 Array.prototype.map ( callbackfn [ , thisArg ] )
-  // 22.1.3.16 Array.prototype.pop ( )
-  // 22.1.3.17 Array.prototype.push ( ...items )
-  // 22.1.3.18 Array.prototype.reduce ( callbackfn [ , initialValue ] )
-  // 22.1.3.19 Array.prototype.reduceRight ( callbackfn [ , initialValue ] )
-  // 22.1.3.20 Array.prototype.reverse ( )
-  // 22.1.3.21 Array.prototype.shift ( )
-  // 22.1.3.22 Array.prototype.slice (start, end)
-  // 22.1.3.23 Array.prototype.some ( callbackfn [ , thisArg ] )
-  // 22.1.3.24 Array.prototype.sort (comparefn)
-  // 22.1.3.25 Array.prototype.splice (start, deleteCount , ...items )
-  // 22.1.3.26 Array.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
-  // 22.1.3.27 Array.prototype.toString ( )
-  // 22.1.3.28 Array.prototype.unshift ( ...items )
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
 
-  // 22.1.3.29 Array.prototype.values ( )
-  define(
-    Array.prototype, 'values',
-    function values() {
-      return CreateArrayIterator(this, 'value');
-    }, !nativeArrayIteratorMethods);
+var Buffer = require('buffer').Buffer;
+/*<replacement>*/
+var bufferShim = require('buffer-shims');
+/*</replacement>*/
 
-  // 22.1.3.30 Array.prototype [ @@iterator ] ( )
-  define(
-    Array.prototype, $$iterator,
-    Array.prototype.values
-    );
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-  // 22.1.3.31 Array.prototype [ @@unscopables ]
-  // 22.1.4 Properties of Array Instances
-  // 22.1.4.1 length
+/*<replacement>*/
+var debugUtil = require('util');
+var debug = void 0;
+if (debugUtil && debugUtil.debuglog) {
+  debug = debugUtil.debuglog('stream');
+} else {
+  debug = function () {};
+}
+/*</replacement>*/
 
-  // 22.1.5 Array Iterator Objects
-  function ArrayIterator() {}
+var BufferList = require('./internal/streams/BufferList');
+var StringDecoder;
 
-  // 22.1.5.1 CreateArrayIterator Abstract Operation
-  function CreateArrayIterator(array, kind) {
-    var o = ToObject(array);
-    var iterator = new ArrayIterator;
-    set_internal(iterator, '[[IteratedObject]]', o);
-    set_internal(iterator, '[[ArrayIteratorNextIndex]]', 0);
-    set_internal(iterator, '[[ArrayIterationKind]]', kind);
-    return iterator;
+util.inherits(Readable, Stream);
+
+var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
+
+function prependListener(emitter, event, fn) {
+  // Sadly this is not cacheable as some libraries bundle their own
+  // event emitter implementation with them.
+  if (typeof emitter.prependListener === 'function') {
+    return emitter.prependListener(event, fn);
+  } else {
+    // This is a hack to make sure that our error handler is attached before any
+    // userland ones.  NEVER DO THIS. This is here only because this code needs
+    // to continue to work with older versions of Node.js that do not include
+    // the prependListener() method. The goal is to eventually remove this hack.
+    if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
   }
+}
 
-  // 22.1.5.2 The %ArrayIteratorPrototype% Object
-  var $ArrayIteratorPrototype$ = Object.create($IteratorPrototype$);
-  ArrayIterator.prototype = $ArrayIteratorPrototype$;
+function ReadableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-  // 22.1.5.2.1 %ArrayIteratorPrototype%. next( )
-  define(
-    $ArrayIteratorPrototype$, 'next',
-    function next() {
-      var o = strict(this);
-      if (Type(o) !== 'object') throw TypeError();
-      var a = o['[[IteratedObject]]'],
-          index = o['[[ArrayIteratorNextIndex]]'],
-          itemKind = o['[[ArrayIterationKind]]'],
-          lenValue = a.length,
-          len = ToUint32(lenValue),
-          elementKey,
-          elementValue;
-      if (itemKind.indexOf('sparse') !== -1) {
-        var found = false;
-        while (!found && index < len) {
-          elementKey = String(index);
-          found = HasProperty(a, elementKey);
-          if (!found) {
-            index += 1;
-          }
-        }
-      }
-      if (index >= len) {
-        set_internal(o, '[[ArrayIteratorNextIndex]]', Infinity);
-        return CreateIterResultObject(undefined, true);
-      }
-      elementKey = index;
-      set_internal(o, '[[ArrayIteratorNextIndex]]', index + 1);
-      if (itemKind.indexOf('value') !== -1)
-        elementValue = a[elementKey];
-      if (itemKind.indexOf('key+value') !== -1)
-        return CreateIterResultObject([elementKey, elementValue], false);
-      if (itemKind.indexOf('key') !== -1)
-        return CreateIterResultObject(elementKey, false);
-      if (itemKind === 'value')
-        return CreateIterResultObject(elementValue, false);
-      throw Error('Internal error');
-    });
+  options = options || {};
 
-  // 22.1.5.2.2 %ArrayIteratorPrototype% [ @@toStringTag ]
-  define($ArrayIteratorPrototype$, $$toStringTag, 'Array Iterator');
+  // object stream flag. Used to make read(n) ignore n and to
+  // make all the buffer merging and length checks go away
+  this.objectMode = !!options.objectMode;
 
-  // 22.1.5.3 Properties of Array Iterator Instances
+  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
 
+  // the point at which it stops calling _read() to fill the buffer
+  // Note: 0 is a valid value, means "don't call _read preemptively ever"
+  var hwm = options.highWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
-  // ---------------------------------------
-  // 22.2 TypedArray Objects
-  // ---------------------------------------
+  // cast to ints.
+  this.highWaterMark = ~~this.highWaterMark;
 
-  // See typedarray.js for TypedArray polyfill
+  // A linked list is used to store data chunks instead of an array because the
+  // linked list can remove elements from the beginning faster than
+  // array.shift()
+  this.buffer = new BufferList();
+  this.length = 0;
+  this.pipes = null;
+  this.pipesCount = 0;
+  this.flowing = null;
+  this.ended = false;
+  this.endEmitted = false;
+  this.reading = false;
 
-  ['Int8Array', 'Uint8Array', 'Uint8ClampedArray',
-   'Int16Array', 'Uint16Array',
-   'Int32Array', 'Uint32Array',
-   'Float32Array', 'Float64Array'].forEach(function ($TypedArrayName$) {
-     if (!($TypedArrayName$ in global))
-       return;
-     var $TypedArray$ = global[$TypedArrayName$];
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, because any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
 
-     // 22.2.1 The %TypedArray% Intrinsic Object
-     // 22.2.1.1 %TypedArray% ( length )
-     // 22.2.1.2 %TypedArray% ( typedArray )
-     // 22.2.1.3 %TypedArray% ( object )
-     // 22.2.1.4 %TypedArray% ( buffer [ , byteOffset [ , length ] ] )
-     // 22.2.1.5 %TypedArray% ( all other argument combinations )
-     // 22.2.2 Properties of the %TypedArray% Intrinsic Object
+  // whenever we return null, then we set a flag to say
+  // that we're awaiting a 'readable' event emission.
+  this.needReadable = false;
+  this.emittedReadable = false;
+  this.readableListening = false;
+  this.resumeScheduled = false;
 
-     // 22.2.2.1 %TypedArray%.from ( source [ , mapfn [ , thisArg ] ] )
-     define(
-       $TypedArray$, 'from',
-       function from(source) {
-         var mapfn = arguments[1];
-         var thisArg = arguments[2];
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
 
-         var c = strict(this);
-         if (!IsConstructor(c)) throw TypeError();
-         if (mapfn === undefined) {
-           var mapping = false;
-         } else {
-           if (IsCallable(mapfn)) throw TypeError();
-           var t = thisArg;
-           mapping = true;
-         }
-         var usingIterator = GetMethod(source, $$iterator);
-         if (usingIterator !== undefined) {
-           var iterator = GetIterator(source, usingIterator);
-           var values = [];
-           var next = true;
-           while (next !== false) {
-             next = IteratorStep(iterator);
-             if (next !== false) {
-               var nextValue = IteratorValue(next);
-               values.push(nextValue);
-             }
-           }
-           var len = values.length;
-           var newObj = new c(len);
-           var k = 0;
-           while (k < len) {
-             var kValue = values.shift();
-             if (mapping) {
-               var mappedValue = mapfn.call(t, kValue);
-             } else {
-               mappedValue = kValue;
-             }
-             newObj[k] = mappedValue;
-             ++k;
-           }
-           console.assert(values.length === 0);
-           return newObj;
-         }
-         var arrayLike = ToObject(source);
-         var lenValue = arrayLike.length;
-         len = ToLength(lenValue);
-         newObj = new c(len);
-         k = 0;
-         while (k < len) {
-           kValue = arrayLike[k];
-           if (mapping) {
-             mappedValue = mapfn.call(t, kValue, k);
-           } else {
-             mappedValue = kValue;
-           }
-           newObj[k] = mappedValue;
-           ++k;
-         }
-         return newObj;
-       });
+  // when piping, we only care about 'readable' events that happen
+  // after read()ing all the bytes and not getting any pushback.
+  this.ranOut = false;
 
-     // 22.2.2.2 %TypedArray%.of ( ...items )
-     define(
-       $TypedArray$, 'of',
-       function of() {
-         var items = arguments;
+  // the number of writers that are awaiting a drain event in .pipe()s
+  this.awaitDrain = 0;
 
-         var len = items.length;
-         var c = strict(this);
-         var newObj = new c(len);
-         var k = 0;
-         while (k < len) {
-           newObj[k] = items[k];
-           ++k;
-         }
-         return newObj;
-       });
+  // if true, a maybeReadMore has been scheduled
+  this.readingMore = false;
 
-     // 22.2.2.3 %TypedArray%.prototype
-     // 22.2.2.4 get %TypedArray% [ @@species ]
-     // 22.2.3 Properties of the %TypedArrayPrototype% Object
-     // 22.2.3.1 get %TypedArray%.prototype.buffer
-     // 22.2.3.2 get %TypedArray%.prototype.byteLength
-     // 22.2.3.3 get %TypedArray%.prototype.byteOffset
-     // 22.2.3.4 %TypedArray%.prototype.constructor
+  this.decoder = null;
+  this.encoding = null;
+  if (options.encoding) {
+    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+    this.decoder = new StringDecoder(options.encoding);
+    this.encoding = options.encoding;
+  }
+}
 
-     // 22.2.3.5 %TypedArray%.prototype.copyWithin (target, start [, end ] )
-     define($TypedArray$.prototype, 'copyWithin', Array.prototype.copyWithin);
+function Readable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-     // 22.2.3.6 %TypedArray%.prototype.entries ( )
-     define($TypedArray$.prototype, 'entries', Array.prototype.entries);
+  if (!(this instanceof Readable)) return new Readable(options);
+
+  this._readableState = new ReadableState(options, this);
 
-     // 22.2.3.7 %TypedArray%.prototype.every ( callbackfn [ , thisArg ] )
-     define($TypedArray$.prototype, 'every', Array.prototype.every);
+  // legacy
+  this.readable = true;
 
-     // 22.2.3.8 %TypedArray%.prototype.fill (value [ , start [ , end ] ] )
-     define(
-       $TypedArray$.prototype, 'fill',
-       //Array.prototype.fill // Doesn't work in Safari 7
-       function fill(value/*, start, end*/) {
-         var start = arguments[1],
-             end = arguments[2];
+  if (options && typeof options.read === 'function') this._read = options.read;
 
-         var o = ToObject(this);
-         var lenVal = o.length;
-         var len = ToLength(lenVal);
-         len = max(len, 0);
-         var relativeStart = ToInteger(start);
-         var k;
-         if (relativeStart < 0) k = max((len + relativeStart), 0);
-         else k = min(relativeStart, len);
-         var relativeEnd;
-         if (end === undefined) relativeEnd = len;
-         else relativeEnd = ToInteger(end);
-         var final;
-         if (relativeEnd < 0) final = max((len + relativeEnd), 0);
-         else final = min(relativeEnd, len);
-         while (k < final) {
-           var pk = String(k);
-           o[pk] = value;
-           k += 1;
-         }
-         return o;
-       });
+  Stream.call(this);
+}
 
-     // 22.2.3.9 %TypedArray%.prototype.filter ( callbackfn [ , thisArg ] )
-     define(
-       $TypedArray$.prototype, 'filter',
-       function filter(callbackfn) {
-         var thisArg = arguments[1];
+// Manually shove something into the read() buffer.
+// This returns true if the highWaterMark has not been hit yet,
+// similar to how Writable.write() returns true if you should
+// write() some more.
+Readable.prototype.push = function (chunk, encoding) {
+  var state = this._readableState;
 
-         var o = ToObject(this);
-         var lenVal = o.length;
-         var len = ToLength(lenVal);
-         if (!IsCallable(callbackfn)) throw TypeError();
-         var t = thisArg;
-         var c = o.constructor;
-         var kept = [];
-         var k = 0;
-         var captured = 0;
-         while (k < len) {
-           var kValue = o[k];
-           var selected = callbackfn.call(t, kValue, k, o);
-           if (selected) {
-             kept.push(kValue);
-             ++captured;
-           }
-           ++k;
-         }
-         var a = new c(captured);
-         var n = 0;
-         for (var i = 0; i < kept.length; ++i) {
-           var e = kept[i];
-           a[n] = e;
-           ++n;
-         }
-         return a;
-       });
+  if (!state.objectMode && typeof chunk === 'string') {
+    encoding = encoding || state.defaultEncoding;
+    if (encoding !== state.encoding) {
+      chunk = bufferShim.from(chunk, encoding);
+      encoding = '';
+    }
+  }
 
-     // 22.2.3.10 %TypedArray%.prototype.find (predicate [ , thisArg ] )
-     define($TypedArray$.prototype, 'find', Array.prototype.find);
+  return readableAddChunk(this, state, chunk, encoding, false);
+};
 
-     // 22.2.3.11 %TypedArray%.prototype.findIndex ( predicate [ , thisArg ] )
-     define($TypedArray$.prototype, 'findIndex', Array.prototype.findIndex);
+// Unshift should *always* be something directly out of read()
+Readable.prototype.unshift = function (chunk) {
+  var state = this._readableState;
+  return readableAddChunk(this, state, chunk, '', true);
+};
 
-     // 22.2.3.12 %TypedArray%.prototype.forEach ( callbackfn [ , thisArg ] )
-     define($TypedArray$.prototype, 'forEach', Array.prototype.forEach);
+Readable.prototype.isPaused = function () {
+  return this._readableState.flowing === false;
+};
 
-     // 22.2.3.13 %TypedArray%.prototype.indexOf (searchElement [ , fromIndex ] )
-     define($TypedArray$.prototype, 'indexOf', Array.prototype.indexOf);
+function readableAddChunk(stream, state, chunk, encoding, addToFront) {
+  var er = chunkInvalid(state, chunk);
+  if (er) {
+    stream.emit('error', er);
+  } else if (chunk === null) {
+    state.reading = false;
+    onEofChunk(stream, state);
+  } else if (state.objectMode || chunk && chunk.length > 0) {
+    if (state.ended && !addToFront) {
+      var e = new Error('stream.push() after EOF');
+      stream.emit('error', e);
+    } else if (state.endEmitted && addToFront) {
+      var _e = new Error('stream.unshift() after end event');
+      stream.emit('error', _e);
+    } else {
+      var skipAdd;
+      if (state.decoder && !addToFront && !encoding) {
+        chunk = state.decoder.write(chunk);
+        skipAdd = !state.objectMode && chunk.length === 0;
+      }
 
-     // 22.2.3.14 %TypedArray%.prototype.join ( separator )
-     define($TypedArray$.prototype, 'join', Array.prototype.join);
+      if (!addToFront) state.reading = false;
 
-     // 22.2.3.15 %TypedArray%.prototype.keys ( )
-     define($TypedArray$.prototype, 'keys', Array.prototype.keys);
+      // Don't add to the buffer if we've decoded to an empty string chunk and
+      // we're not in object mode
+      if (!skipAdd) {
+        // if we want the data now, just emit it.
+        if (state.flowing && state.length === 0 && !state.sync) {
+          stream.emit('data', chunk);
+          stream.read(0);
+        } else {
+          // update the buffer info.
+          state.length += state.objectMode ? 1 : chunk.length;
+          if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
 
-     // 22.2.3.16 %TypedArray%.prototype.lastIndexOf ( searchElement [ , fromIndex ] )
-     define($TypedArray$.prototype, 'lastIndexOf', Array.prototype.lastIndexOf);
+          if (state.needReadable) emitReadable(stream);
+        }
+      }
 
-     // 22.2.3.17 get %TypedArray%.prototype.length
+      maybeReadMore(stream, state);
+    }
+  } else if (!addToFront) {
+    state.reading = false;
+  }
 
-     // 22.2.3.18 %TypedArray%.prototype.map ( callbackfn [ , thisArg ] )
-     define(
-       $TypedArray$.prototype, 'map',
-       function map(callbackfn) {
-         var thisArg = arguments[1];
+  return needMoreData(state);
+}
 
-         var o = ToObject(this);
-         var lenValue = o.length;
-         var len = ToLength(lenValue);
-         if (!IsCallable(callbackfn)) throw TypeError();
-         var t = thisArg;
-         var a = undefined;
-         var c = o.constructor;
-         if (IsConstructor(c))
-           a = new c(len);
-         if (a === undefined)
-           a = new Array(len);
-         var k = 0;
-         while (k < len) {
-           var kPresent = HasProperty(o, k);
-           if (kPresent) {
-             var kValue = o[k];
-             var mappedValue = callbackfn.call(t, kValue, k, o);
-             a[k] = mappedValue;
-           }
-           ++k;
-         }
-         return a;
-       });
+// if it's past the high water mark, we can push in some more.
+// Also, if we have no data yet, we can stand some
+// more bytes.  This is to work around cases where hwm=0,
+// such as the repl.  Also, if the push() triggered a
+// readable event, and the user called read(largeNumber) such that
+// needReadable was set, then we ought to push more, so that another
+// 'readable' event will be triggered.
+function needMoreData(state) {
+  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
+}
 
-     // 22.2.3.19 %TypedArray%.prototype.reduce ( callbackfn [, initialValue] )
-     define($TypedArray$.prototype, 'reduce', Array.prototype.reduce);
+// backwards compatibility.
+Readable.prototype.setEncoding = function (enc) {
+  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
+  this._readableState.decoder = new StringDecoder(enc);
+  this._readableState.encoding = enc;
+  return this;
+};
 
-     // 22.2.3.20 %TypedArray%.prototype.reduceRight ( callbackfn [, initialValue] )
-     define($TypedArray$.prototype, 'reduceRight', Array.prototype.reduceRight);
+// Don't raise the hwm > 8MB
+var MAX_HWM = 0x800000;
+function computeNewHighWaterMark(n) {
+  if (n >= MAX_HWM) {
+    n = MAX_HWM;
+  } else {
+    // Get the next highest power of 2 to prevent increasing hwm excessively in
+    // tiny amounts
+    n--;
+    n |= n >>> 1;
+    n |= n >>> 2;
+    n |= n >>> 4;
+    n |= n >>> 8;
+    n |= n >>> 16;
+    n++;
+  }
+  return n;
+}
 
-     // 22.2.3.21 %TypedArray%.prototype.reverse ( )
-     define($TypedArray$.prototype, 'reverse', Array.prototype.reverse);
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function howMuchToRead(n, state) {
+  if (n <= 0 || state.length === 0 && state.ended) return 0;
+  if (state.objectMode) return 1;
+  if (n !== n) {
+    // Only flow one buffer at a time
+    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
+  }
+  // If we're asking for more than the current hwm, then raise the hwm.
+  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
+  if (n <= state.length) return n;
+  // Don't have enough
+  if (!state.ended) {
+    state.needReadable = true;
+    return 0;
+  }
+  return state.length;
+}
 
-     // 22.2.3.22 %TypedArray%.prototype.set ( overloaded [ , offset ])
-     // 22.2.3.22.1 %TypedArray%.prototype.set (array [ , offset ] )
-     // 22.2.3.22.2 %TypedArray%.prototype.set(typedArray [, offset ] )
+// you can override either this method, or the async _read(n) below.
+Readable.prototype.read = function (n) {
+  debug('read', n);
+  n = parseInt(n, 10);
+  var state = this._readableState;
+  var nOrig = n;
 
-     // 22.2.3.23 %TypedArray%.prototype.slice ( start, end )
-     define(
-       $TypedArray$.prototype, 'slice',
-       function slice(start, end) {
-         var o = ToObject(this);
-         var lenVal = o.length;
-         var len = ToLength(lenVal);
-         var relativeStart = ToInteger(start);
-         var k = (relativeStart < 0) ? max(len + relativeStart, 0) : min(relativeStart, len);
-         var relativeEnd = (end === undefined) ? len : ToInteger(end);
-         var final = (relativeEnd < 0) ? max(len + relativeEnd, 0) : min(relativeEnd, len);
-         var count = final - k;
-         var c = o.constructor;
-         if (IsConstructor(c)) {
-           var a = new c(count);
-         } else {
-           throw TypeError();
-         }
-         var n = 0;
-         while (k < final) {
-           var kValue = o[k];
-           a[n] = kValue;
-           ++k;
-           ++n;
-         }
-         return a;
-       });
+  if (n !== 0) state.emittedReadable = false;
 
-     // 22.2.3.24 %TypedArray%.prototype.some ( callbackfn [ , thisArg ] )
-     define($TypedArray$.prototype, 'some', Array.prototype.some);
+  // if we're doing read(0) to trigger a readable event, but we
+  // already have a bunch of data in the buffer, then just trigger
+  // the 'readable' event and move on.
+  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
+    debug('read: emitReadable', state.length, state.ended);
+    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
+    return null;
+  }
 
-     // 22.2.3.25 %TypedArray%.prototype.sort ( comparefn )
-     define(
-       $TypedArray$.prototype, 'sort',
-       function sort() {
-         var comparefn = arguments[0];
+  n = howMuchToRead(n, state);
 
-         function sortCompare(x, y) {
-           console.assert(Type(x) === 'number' && Type(y) === 'number');
-           if (x !== x && y !== y) return +0;
-           if (x !== x) return 1;
-           if (y !== y) return -1;
-           if (comparefn !== undefined) {
-             return comparefn(x, y);
-           }
-           if (x < y) return -1;
-           if (x > y) return 1;
-           return +0;
-         }
-         return Array.prototype.sort.call(this, sortCompare);
-       });
+  // if we've ended, and we're now clear, then finish it up.
+  if (n === 0 && state.ended) {
+    if (state.length === 0) endReadable(this);
+    return null;
+  }
 
-     // 22.2.3.26 %TypedArray%.prototype.subarray( [ begin [ , end ] ] )
-     // 22.2.3.27 %TypedArray%.prototype.toLocaleString ([ reserved1 [ , reserved2 ] ])
-     // 22.2.3.28 %TypedArray%.prototype.toString ( )
+  // All the actual chunk generation logic needs to be
+  // *below* the call to _read.  The reason is that in certain
+  // synthetic stream cases, such as passthrough streams, _read
+  // may be a completely synchronous operation which may change
+  // the state of the read buffer, providing enough data when
+  // before there was *not* enough.
+  //
+  // So, the steps are:
+  // 1. Figure out what the state of things will be after we do
+  // a read from the buffer.
+  //
+  // 2. If that resulting state will trigger a _read, then call _read.
+  // Note that this may be asynchronous, or synchronous.  Yes, it is
+  // deeply ugly to write APIs this way, but that still doesn't mean
+  // that the Readable class should behave improperly, as streams are
+  // designed to be sync/async agnostic.
+  // Take note if the _read call is sync or async (ie, if the read call
+  // has returned yet), so that we know whether or not it's safe to emit
+  // 'readable' etc.
+  //
+  // 3. Actually pull the requested chunks out of the buffer and return.
 
-     // 22.2.3.29 %TypedArray%.prototype.values ( )
-     define($TypedArray$.prototype, 'values', Array.prototype.values);
+  // if we need a readable event, then we need to do some reading.
+  var doRead = state.needReadable;
+  debug('need readable', doRead);
 
-     // 22.2.3.30 %TypedArray%.prototype [ @@iterator ] ( )
-     define(
-       $TypedArray$.prototype, $$iterator,
-       $TypedArray$.prototype.values
-     );
+  // if we currently have less than the highWaterMark, then also read some
+  if (state.length === 0 || state.length - n < state.highWaterMark) {
+    doRead = true;
+    debug('length less than watermark', doRead);
+  }
 
-     // 22.2.3.31 get %TypedArray%.prototype [ @@toStringTag ]
-     define($TypedArray$.prototype, $$toStringTag, $TypedArrayName$);
+  // however, if we've ended, then there's no point, and if we're already
+  // reading, then it's unnecessary.
+  if (state.ended || state.reading) {
+    doRead = false;
+    debug('reading or ended', doRead);
+  } else if (doRead) {
+    debug('do read');
+    state.reading = true;
+    state.sync = true;
+    // if the length is currently zero, then we *need* a readable event.
+    if (state.length === 0) state.needReadable = true;
+    // call internal read method
+    this._read(state.highWaterMark);
+    state.sync = false;
+    // If _read pushed data synchronously, then `reading` will be false,
+    // and we need to re-evaluate how much data we can return to the user.
+    if (!state.reading) n = howMuchToRead(nOrig, state);
+  }
 
-     // 22.2.4 The TypedArray Constructors
-     // 22.2.4.1TypedArray( ... argumentsList)
-     // 22.2.5 Properties of the TypedArray Constructors
-     // 22.2.5.1 TypedArray.BYTES_PER_ELEMENT
-     // 22.2.5.2 TypedArray.prototype
-     // 22.2.6 Properties of TypedArray Prototype Objects
-     // 22.2.6.1 TypedArray.prototype.BYTES_PER_ELEMENT
-     // 22.2.6.2 TypedArray.prototype.constructor
-     // 22.2.7 Properties of TypedArray Instances
-   });
+  var ret;
+  if (n > 0) ret = fromList(n, state);else ret = null;
 
-  // ---------------------------------------
-  // 23 Keyed Collection
-  // ---------------------------------------
+  if (ret === null) {
+    state.needReadable = true;
+    n = 0;
+  } else {
+    state.length -= n;
+  }
 
-  // ---------------------------------------
-  // 23.1 Map Objects
-  // ---------------------------------------
+  if (state.length === 0) {
+    // If we have nothing in the buffer, then we want to know
+    // as soon as we *do* get something into the buffer.
+    if (!state.ended) state.needReadable = true;
 
-  (function() {
-    // 23.1.1 The Map Constructor
+    // If we tried to read() past the EOF, then emit end on the next tick.
+    if (nOrig !== n && state.ended) endReadable(this);
+  }
 
-    // 23.1.1.1 Map ( [ iterable ] )
-    /** @constructor */
-    function Map(/*iterable*/) {
-      var map = strict(this);
-      var iterable = arguments[0];
+  if (ret !== null) this.emit('data', ret);
 
-      if (Type(map) !== 'object') throw TypeError();
-      if ('[[MapData]]' in map) throw TypeError();
+  return ret;
+};
 
-      if (iterable !== undefined) {
-        var adder = map['set'];
-        if (!IsCallable(adder)) throw TypeError();
-        var iter = GetIterator(ToObject(iterable));
-      }
-      set_internal(map, '[[MapData]]', { keys: [], values: [] });
-      if (iter === undefined) return map;
-      while (true) {
-        var next = IteratorStep(iter);
-        if (next === false)
-          return map;
-        var nextItem = IteratorValue(next);
-        if (Type(nextItem) !== 'object') throw TypeError();
-        var k = nextItem[0];
-        var v = nextItem[1];
-        adder.call(map, k, v);
-      }
+function chunkInvalid(state, chunk) {
+  var er = null;
+  if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  return er;
+}
 
-      return map;
+function onEofChunk(stream, state) {
+  if (state.ended) return;
+  if (state.decoder) {
+    var chunk = state.decoder.end();
+    if (chunk && chunk.length) {
+      state.buffer.push(chunk);
+      state.length += state.objectMode ? 1 : chunk.length;
     }
+  }
+  state.ended = true;
 
-    if (!('Map' in global) || OVERRIDE_NATIVE_FOR_TESTING ||
-        (function() { try { new global.Map([]); return false; } catch (_) { return true; } }()) ||
-        (function() { try { return !new global.Map().entries().next; } catch (_) { return true; } }()) ||
-        (new global.Map([['a', 1]]).size !== 1))
-      global.Map = Map;
+  // emit 'readable' now to make sure it gets picked up.
+  emitReadable(stream);
+}
 
+// Don't emit readable right away in sync mode, because this can trigger
+// another read() call => stack overflow.  This way, it might trigger
+// a nextTick recursion warning, but that's not so bad.
+function emitReadable(stream) {
+  var state = stream._readableState;
+  state.needReadable = false;
+  if (!state.emittedReadable) {
+    debug('emitReadable', state.flowing);
+    state.emittedReadable = true;
+    if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
+  }
+}
 
-    function MapDataIndexOf(mapData, key) {
-      var i;
-      if (key === key) return mapData.keys.indexOf(key);
-      // Slow case for NaN
-      for (i = 0; i < mapData.keys.length; i += 1)
-        if (SameValueZero(mapData.keys[i], key)) return i;
-      return -1;
-    }
+function emitReadable_(stream) {
+  debug('emit readable');
+  stream.emit('readable');
+  flow(stream);
+}
 
-    // 23.1.1.2 new Map ( ... argumentsList )
-    // 23.1.2 Properties of the Map Constructor
-    // 23.1.2.1 Map.prototype
-    var $MapPrototype$ = {};
-    Map.prototype = $MapPrototype$;
+// at this point, the user has presumably seen the 'readable' event,
+// and called read() to consume some data.  that may have triggered
+// in turn another _read(n) call, in which case reading = true if
+// it's in progress.
+// However, if we're not ended, or reading, and the length < hwm,
+// then go ahead and try to read some more preemptively.
+function maybeReadMore(stream, state) {
+  if (!state.readingMore) {
+    state.readingMore = true;
+    processNextTick(maybeReadMore_, stream, state);
+  }
+}
+
+function maybeReadMore_(stream, state) {
+  var len = state.length;
+  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
+    debug('maybeReadMore read 0');
+    stream.read(0);
+    if (len === state.length)
+      // didn't get any data, stop spinning.
+      break;else len = state.length;
+  }
+  state.readingMore = false;
+}
+
+// abstract method.  to be overridden in specific implementation classes.
+// call cb(er, data) where data is <= n in length.
+// for virtual (non-string, non-buffer) streams, "length" is somewhat
+// arbitrary, and perhaps not very meaningful.
+Readable.prototype._read = function (n) {
+  this.emit('error', new Error('_read() is not implemented'));
+};
 
-    // 23.1.2.2 get Map [ @@species ]
+Readable.prototype.pipe = function (dest, pipeOpts) {
+  var src = this;
+  var state = this._readableState;
 
-    // 23.1.3 Properties of the Map Prototype Object
-    // 23.1.3.1 Map.prototype.clear ()
-    define(
-      Map.prototype, 'clear',
-      function clear() {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
-        entries.keys.length = 0;
-        entries.values.length = 0;
-        return undefined;
-      });
+  switch (state.pipesCount) {
+    case 0:
+      state.pipes = dest;
+      break;
+    case 1:
+      state.pipes = [state.pipes, dest];
+      break;
+    default:
+      state.pipes.push(dest);
+      break;
+  }
+  state.pipesCount += 1;
+  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
 
-    // 23.1.3.2 Map.prototype.constructor
+  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
 
-    // 23.1.3.3 Map.prototype.delete ( key )
-    define(
-      Map.prototype, 'delete',
-      function delete_(key) {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
-        var i = MapDataIndexOf(entries, key);
-        if (i < 0) return false;
-        entries.keys[i] = empty;
-        entries.values[i] = empty;
-        return true;
-      });
+  var endFn = doEnd ? onend : cleanup;
+  if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
 
-    // 23.1.3.4 Map.prototype.entries ( )
-    define(
-      Map.prototype, 'entries',
-      function entries() {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        return CreateMapIterator(m, 'key+value');
-      });
+  dest.on('unpipe', onunpipe);
+  function onunpipe(readable) {
+    debug('onunpipe');
+    if (readable === src) {
+      cleanup();
+    }
+  }
 
-    // 23.1.3.5 Map.prototype.forEach ( callbackfn [ , thisArg ] )
-    define(
-      Map.prototype, 'forEach',
-      function forEach(callbackfn /*, thisArg*/) {
-        var thisArg = arguments[1];
+  function onend() {
+    debug('onend');
+    dest.end();
+  }
 
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
+  // when the dest drains, it reduces the awaitDrain counter
+  // on the source.  This would be more elegant with a .once()
+  // handler in flow(), but adding and removing repeatedly is
+  // too slow.
+  var ondrain = pipeOnDrain(src);
+  dest.on('drain', ondrain);
 
-        if (!IsCallable(callbackfn)) {
-          throw TypeError('First argument to forEach is not callable.');
-        }
-        for (var i = 0; i < entries.keys.length; ++i) {
-          if (entries.keys[i] !== empty) {
-            callbackfn.call(thisArg, entries.values[i], entries.keys[i], m);
-          }
-        }
-        return undefined;
-      });
+  var cleanedUp = false;
+  function cleanup() {
+    debug('cleanup');
+    // cleanup event handlers once the pipe is broken
+    dest.removeListener('close', onclose);
+    dest.removeListener('finish', onfinish);
+    dest.removeListener('drain', ondrain);
+    dest.removeListener('error', onerror);
+    dest.removeListener('unpipe', onunpipe);
+    src.removeListener('end', onend);
+    src.removeListener('end', cleanup);
+    src.removeListener('data', ondata);
 
-    // 23.1.3.6 Map.prototype.get ( key )
-    define(
-      Map.prototype, 'get',
-      function get(key) {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
-        var i = MapDataIndexOf(entries, key);
-        if (i >= 0) return entries.values[i];
-        return undefined;
-      });
+    cleanedUp = true;
 
-    // 23.1.3.7 Map.prototype.has ( key )
-    define(
-      Map.prototype, 'has',
-      function has(key) {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
-        if (MapDataIndexOf(entries, key) >= 0) return true;
-        return false;
-      });
+    // if the reader is waiting for a drain event from this
+    // specific writer, then it would cause it to never start
+    // flowing again.
+    // So, if this is awaiting a drain, then we just call it now.
+    // If we don't know, then assume that we are waiting for one.
+    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
+  }
 
-    // 23.1.3.8 Map.prototype.keys ( )
-    define(
-      Map.prototype, 'keys',
-      function keys() {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        return CreateMapIterator(m, 'key');
-      });
+  // If the user pushes more data while we're writing to dest then we'll end up
+  // in ondata again. However, we only want to increase awaitDrain once because
+  // dest will only emit one 'drain' event for the multiple writes.
+  // => Introduce a guard on increasing awaitDrain.
+  var increasedAwaitDrain = false;
+  src.on('data', ondata);
+  function ondata(chunk) {
+    debug('ondata');
+    increasedAwaitDrain = false;
+    var ret = dest.write(chunk);
+    if (false === ret && !increasedAwaitDrain) {
+      // If the user unpiped during `dest.write()`, it is possible
+      // to get stuck in a permanently paused state if that write
+      // also returned false.
+      // => Check whether `dest` is still a piping destination.
+      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
+        debug('false write response, pause', src._readableState.awaitDrain);
+        src._readableState.awaitDrain++;
+        increasedAwaitDrain = true;
+      }
+      src.pause();
+    }
+  }
 
-    // 23.1.3.9 Map.prototype.set ( key , value )
-    define(
-      Map.prototype, 'set',
-      function set(key, value) {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        if (!('[[MapData]]' in m)) throw TypeError();
-        if (m['[[MapData]]'] === undefined) throw TypeError();
-        var entries = m['[[MapData]]'];
-        var i = MapDataIndexOf(entries, key);
-        if (i < 0) i = entries.keys.length;
-        if (SameValue(key, -0)) key = 0;
-        entries.keys[i] = key;
-        entries.values[i] = value;
-        return m;
-      });
+  // if the dest has an error, then stop piping into it.
+  // however, don't suppress the throwing behavior for this.
+  function onerror(er) {
+    debug('onerror', er);
+    unpipe();
+    dest.removeListener('error', onerror);
+    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
+  }
 
-    // 23.1.3.10 get Map.prototype.size
-    Object.defineProperty(
-      Map.prototype, 'size', {
-        get: function() {
-          var m = strict(this);
-          if (Type(m) !== 'object') throw TypeError();
-          if (!('[[MapData]]' in m)) throw TypeError();
-          if (m['[[MapData]]'] === undefined) throw TypeError();
-          var entries = m['[[MapData]]'];
-          var count = 0;
-          for (var i = 0; i < entries.keys.length; ++i) {
-            if (entries.keys[i] !== empty)
-              count = count + 1;
-          }
-          return count;
-        }
-      });
+  // Make sure our error handler is attached before userland ones.
+  prependListener(dest, 'error', onerror);
 
-    // 23.1.3.11 Map.prototype.values ( )
-    define(
-      Map.prototype, 'values',
-      function values() {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        return CreateMapIterator(m, 'value');
-      });
+  // Both close and finish should trigger unpipe, but only once.
+  function onclose() {
+    dest.removeListener('finish', onfinish);
+    unpipe();
+  }
+  dest.once('close', onclose);
+  function onfinish() {
+    debug('onfinish');
+    dest.removeListener('close', onclose);
+    unpipe();
+  }
+  dest.once('finish', onfinish);
 
-    // 23.1.3.12 Map.prototype [ @@iterator ]( )
-    define(
-      Map.prototype, $$iterator,
-      function() {
-        var m = strict(this);
-        if (Type(m) !== 'object') throw TypeError();
-        return CreateMapIterator(m, 'key+value');
-      });
+  function unpipe() {
+    debug('unpipe');
+    src.unpipe(dest);
+  }
 
-    // 23.1.3.13 Map.prototype [ @@toStringTag ]
-    define(global.Map.prototype, $$toStringTag, 'Map');
+  // tell the dest that it's being piped to
+  dest.emit('pipe', src);
 
-    // 23.1.4 Properties of Map Instances
-    // 23.1.5 Map Iterator Objects
+  // start the flow if it hasn't been started already.
+  if (!state.flowing) {
+    debug('pipe resume');
+    src.resume();
+  }
 
-    /** @constructor */
-    function MapIterator() {}
+  return dest;
+};
 
-    // 23.1.5.1 CreateMapIterator Abstract Operation
-    function CreateMapIterator(map, kind) {
-      if (Type(map) !== 'object') throw TypeError();
-      if (!('[[MapData]]' in map)) throw TypeError();
-      if (map['[[MapData]]'] === undefined) throw TypeError();
-      var iterator = new MapIterator;
-      set_internal(iterator, '[[Map]]', map);
-      set_internal(iterator, '[[MapNextIndex]]', 0);
-      set_internal(iterator, '[[MapIterationKind]]', kind);
-      return iterator;
+function pipeOnDrain(src) {
+  return function () {
+    var state = src._readableState;
+    debug('pipeOnDrain', state.awaitDrain);
+    if (state.awaitDrain) state.awaitDrain--;
+    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
+      state.flowing = true;
+      flow(src);
     }
+  };
+}
 
-    // 23.1.5.2 The %MapIteratorPrototype% Object
-    var $MapIteratorPrototype$ = Object.create($IteratorPrototype$);
-    MapIterator.prototype = $MapIteratorPrototype$;
-
-    // 23.1.5.2.1 %MapIteratorPrototype%.next ( )
-    define(
-      $MapIteratorPrototype$, 'next',
-      function next() {
-        var o = strict(this);
-        if (Type(o) !== 'object') throw TypeError();
-        var m = o['[[Map]]'],
-            index = o['[[MapNextIndex]]'],
-            itemKind = o['[[MapIterationKind]]'],
-            entries = m['[[MapData]]'];
-        while (index < entries.keys.length) {
-          var e = {key: entries.keys[index], value: entries.values[index]};
-          index = index += 1;
-          set_internal(o, '[[MapNextIndex]]', index);
-          if (e.key !== empty) {
-            if (itemKind === 'key') {
-              return CreateIterResultObject(e.key, false);
-            } else if (itemKind === 'value') {
-              return CreateIterResultObject(e.value, false);
-            } else {
-              return CreateIterResultObject([e.key, e.value], false);
-            }
-          }
-        }
-        return CreateIterResultObject(undefined, true);
-      });
-
-    // 23.1.5.2.2 %MapIteratorPrototype% [ @@toStringTag ]
-    define($MapIteratorPrototype$, $$toStringTag, 'Map Iterator');
+Readable.prototype.unpipe = function (dest) {
+  var state = this._readableState;
 
-    // 23.1.5.3 Properties of Map Iterator Instances
-  }());
+  // if we're not piping anywhere, then do nothing.
+  if (state.pipesCount === 0) return this;
 
-  // ---------------------------------------
-  // 23.2 Set Objects
-  // ---------------------------------------
+  // just one destination.  most common case.
+  if (state.pipesCount === 1) {
+    // passed in one, but it's not the right one.
+    if (dest && dest !== state.pipes) return this;
 
-  (function() {
-    // 23.2.1 The Set Constructor
-    // 23.2.1.1 Set ( [ iterable ] )
+    if (!dest) dest = state.pipes;
 
-    /** @constructor */
-    function Set(/*iterable*/) {
-      var set = strict(this);
-      var iterable = arguments[0];
+    // got a match.
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
+    if (dest) dest.emit('unpipe', this);
+    return this;
+  }
 
-      if (Type(set) !== 'object') throw TypeError();
-      if ('[[SetData]]' in set) throw TypeError();
+  // slow case. multiple pipe destinations.
 
-      if (iterable !== undefined) {
-        var adder = set['add'];
-        if (!IsCallable(adder)) throw TypeError();
-        var iter = GetIterator(ToObject(iterable));
-      }
-      set_internal(set, '[[SetData]]', []);
-      if (iter === undefined) return set;
-      while (true) {
-        var next = IteratorStep(iter);
-        if (next === false)
-          return set;
-        var nextValue = IteratorValue(next);
-        adder.call(set, nextValue);
-      }
+  if (!dest) {
+    // remove all.
+    var dests = state.pipes;
+    var len = state.pipesCount;
+    state.pipes = null;
+    state.pipesCount = 0;
+    state.flowing = false;
 
-      return set;
-    }
+    for (var i = 0; i < len; i++) {
+      dests[i].emit('unpipe', this);
+    }return this;
+  }
 
-    if (!('Set' in global) || OVERRIDE_NATIVE_FOR_TESTING ||
-        (function() { try { return !new global.Set().entries().next; } catch (_) { return true; } }()) ||
-        (new global.Set([1]).size !== 1))
-      global.Set = Set;
+  // try to find the right one.
+  var index = indexOf(state.pipes, dest);
+  if (index === -1) return this;
 
-    function SetDataIndexOf(setData, key) {
-      var i;
-      if (key === key)
-        return setData.indexOf(key);
-      // Slow case for NaN
-      for (i = 0; i < setData.length; i += 1)
-        if (SameValueZero(setData[i], key)) return i;
-      return -1;
-    }
+  state.pipes.splice(index, 1);
+  state.pipesCount -= 1;
+  if (state.pipesCount === 1) state.pipes = state.pipes[0];
 
-    // 23.2.1.2 new Set ( ...argumentsList )
-    // 23.2.2 Properties of the Set Constructor
+  dest.emit('unpipe', this);
 
-    // 23.2.2.1 Set.prototype
-    var $SetPrototype$ =  {};
-    Set.prototype = $SetPrototype$;
+  return this;
+};
 
-    // 23.2.2.2 get Set [ @@species ]
-    // 23.2.3 Properties of the Set Prototype Object
+// set up data events if they are asked for
+// Ensure readable listeners eventually get something
+Readable.prototype.on = function (ev, fn) {
+  var res = Stream.prototype.on.call(this, ev, fn);
 
-    // 23.2.3.1 Set.prototype.add (value )
-    define(
-      Set.prototype, 'add',
-      function add(value) {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        if (!('[[SetData]]' in s)) throw TypeError();
-        if (s['[[SetData]]'] === undefined) throw TypeError();
-        if (SameValue(value, -0)) value = 0;
-        var entries = s['[[SetData]]'];
-        var i = SetDataIndexOf(entries, value);
-        if (i < 0) i = s['[[SetData]]'].length;
-        s['[[SetData]]'][i] = value;
+  if (ev === 'data') {
+    // Start flowing on next tick if stream isn't explicitly paused
+    if (this._readableState.flowing !== false) this.resume();
+  } else if (ev === 'readable') {
+    var state = this._readableState;
+    if (!state.endEmitted && !state.readableListening) {
+      state.readableListening = state.needReadable = true;
+      state.emittedReadable = false;
+      if (!state.reading) {
+        processNextTick(nReadingNextTick, this);
+      } else if (state.length) {
+        emitReadable(this, state);
+      }
+    }
+  }
 
-        return s;
-      });
+  return res;
+};
+Readable.prototype.addListener = Readable.prototype.on;
 
-    // 23.2.3.2 Set.prototype.clear ()
-    define(
-      Set.prototype, 'clear',
-      function clear() {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        if (!('[[SetData]]' in s)) throw TypeError();
-        if (s['[[SetData]]'] === undefined) throw TypeError();
-        var entries = s['[[SetData]]'];
-        entries.length = 0;
-        return undefined;
-      });
+function nReadingNextTick(self) {
+  debug('readable nexttick read 0');
+  self.read(0);
+}
 
-    // 23.2.3.3 Set.prototype.constructor
-    // 23.2.3.4 Set.prototype.delete ( value )
-    define(
-      Set.prototype, 'delete',
-      function delete_(value) {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        if (!('[[SetData]]' in s)) throw TypeError();
-        if (s['[[SetData]]'] === undefined) throw TypeError();
-        var entries = s['[[SetData]]'];
-        var i = SetDataIndexOf(entries, value);
-        if (i < 0) return false;
-        entries[i] = empty;
-        return true;
-      });
+// pause() and resume() are remnants of the legacy readable stream API
+// If the user uses them, then switch into old mode.
+Readable.prototype.resume = function () {
+  var state = this._readableState;
+  if (!state.flowing) {
+    debug('resume');
+    state.flowing = true;
+    resume(this, state);
+  }
+  return this;
+};
 
-    // 23.2.3.5 Set.prototype.entries ( )
-    define(
-      Set.prototype, 'entries',
-      function entries() {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        return CreateSetIterator(s, 'key+value');
-      });
+function resume(stream, state) {
+  if (!state.resumeScheduled) {
+    state.resumeScheduled = true;
+    processNextTick(resume_, stream, state);
+  }
+}
 
-    // 23.2.3.6 Set.prototype.forEach ( callbackfn [ , thisArg ] )
-    define(
-      Set.prototype, 'forEach',
-      function forEach(callbackfn/*, thisArg*/) {
-        var thisArg = arguments[1];
+function resume_(stream, state) {
+  if (!state.reading) {
+    debug('resume read 0');
+    stream.read(0);
+  }
 
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        if (!('[[SetData]]' in s)) throw TypeError();
-        if (s['[[SetData]]'] === undefined) throw TypeError();
-        var entries = s['[[SetData]]'];
+  state.resumeScheduled = false;
+  state.awaitDrain = 0;
+  stream.emit('resume');
+  flow(stream);
+  if (state.flowing && !state.reading) stream.read(0);
+}
 
-        if (!IsCallable(callbackfn)) {
-          throw TypeError('First argument to forEach is not callable.');
-        }
-        for (var i = 0; i < entries.length; ++i) {
-          if (entries[i] !== empty) {
-            callbackfn.call(thisArg, entries[i], entries[i], s);
-          }
-        }
-      });
+Readable.prototype.pause = function () {
+  debug('call pause flowing=%j', this._readableState.flowing);
+  if (false !== this._readableState.flowing) {
+    debug('pause');
+    this._readableState.flowing = false;
+    this.emit('pause');
+  }
+  return this;
+};
 
-    // 23.2.3.7 Set.prototype.has ( value )
-    define(
-      Set.prototype, 'has',
-      function has(key) {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        if (!('[[SetData]]' in s)) throw TypeError();
-        if (s['[[SetData]]'] === undefined) throw TypeError();
-        var entries = s['[[SetData]]'];
-        return SetDataIndexOf(entries, key) !== -1;
-      });
+function flow(stream) {
+  var state = stream._readableState;
+  debug('flow', state.flowing);
+  while (state.flowing && stream.read() !== null) {}
+}
 
-    // 23.2.3.8 Set.prototype.keys ( )
-    // See Set.prototype.values
+// wrap an old-style stream as the async data source.
+// This is *not* part of the readable stream interface.
+// It is an ugly unfortunate mess of history.
+Readable.prototype.wrap = function (stream) {
+  var state = this._readableState;
+  var paused = false;
 
-    // 23.2.3.9 get Set.prototype.size
-    Object.defineProperty(
-      Set.prototype, 'size', {
-        get: function() {
-          var s = strict(this);
-          if (Type(s) !== 'object') throw TypeError();
-          if (!('[[SetData]]' in s)) throw TypeError();
-          if (s['[[SetData]]'] === undefined) throw TypeError();
-          var entries = s['[[SetData]]'];
-          var count = 0;
-          for (var i = 0; i < entries.length; ++i) {
-            if (entries[i] !== empty)
-              count = count + 1;
-          }
-          return count;
-        }
-      });
+  var self = this;
+  stream.on('end', function () {
+    debug('wrapped end');
+    if (state.decoder && !state.ended) {
+      var chunk = state.decoder.end();
+      if (chunk && chunk.length) self.push(chunk);
+    }
 
-    // 23.2.3.10 Set.prototype.values ( )
-    define(
-      Set.prototype, 'values',
-      function values() {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        return CreateSetIterator(s, 'value');
-      });
-    // NOTE: function name is still 'values':
-    Set.prototype.keys = Set.prototype.values;
+    self.push(null);
+  });
 
-    // 23.2.3.11 Set.prototype [@@iterator ] ( )
-    define(
-      Set.prototype, $$iterator,
-      function() {
-        var s = strict(this);
-        if (Type(s) !== 'object') throw TypeError();
-        return CreateSetIterator(s);
-      });
+  stream.on('data', function (chunk) {
+    debug('wrapped data');
+    if (state.decoder) chunk = state.decoder.write(chunk);
 
-    // 23.2.3.12 Set.prototype [ @@toStringTag ]
-    define(global.Set.prototype, $$toStringTag, 'Set');
+    // don't skip over falsy values in objectMode
+    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
 
-    // 23.2.4 Properties of Set Instances
-    // 23.2.5 Set Iterator Objects
-    /** @constructor */
-    function SetIterator() {}
+    var ret = self.push(chunk);
+    if (!ret) {
+      paused = true;
+      stream.pause();
+    }
+  });
 
-    // 23.2.5.1 CreateSetIterator Abstract Operation
-    function CreateSetIterator(set, kind) {
-      if (Type(set) !== 'object') throw TypeError();
-      if (!('[[SetData]]' in set)) throw TypeError();
-      if (set['[[SetData]]'] === undefined) throw TypeError();
-      var iterator = new SetIterator;
-      set_internal(iterator, '[[IteratedSet]]', set);
-      set_internal(iterator, '[[SetNextIndex]]', 0);
-      set_internal(iterator, '[[SetIterationKind]]', kind);
-      return iterator;
+  // proxy all the other methods.
+  // important when wrapping filters and duplexes.
+  for (var i in stream) {
+    if (this[i] === undefined && typeof stream[i] === 'function') {
+      this[i] = function (method) {
+        return function () {
+          return stream[method].apply(stream, arguments);
+        };
+      }(i);
     }
+  }
 
-    // 23.2.5.2 The %SetIteratorPrototype% Object
-    var $SetIteratorPrototype$ = Object.create($IteratorPrototype$);
-    SetIterator.prototype = $SetIteratorPrototype$;
+  // proxy certain important events.
+  for (var n = 0; n < kProxyEvents.length; n++) {
+    stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n]));
+  }
 
-    // 23.2.5.2.1 %SetIteratorPrototype%.next( )
-    define(
-      $SetIteratorPrototype$, 'next',
-      function next() {
-        var o = strict(this);
-        if (Type(o) !== 'object') throw TypeError();
-        var s = o['[[IteratedSet]]'],
-            index = o['[[SetNextIndex]]'],
-            itemKind = o['[[SetIterationKind]]'],
-            entries = s['[[SetData]]'];
-        while (index < entries.length) {
-          var e = entries[index];
-          index = index += 1;
-          set_internal(o, '[[SetNextIndex]]', index);
-          if (e !== empty) {
-            if (itemKind === 'key+value')
-              return CreateIterResultObject([e, e], false);
-            return CreateIterResultObject(e, false);
-          }
-        }
-        return CreateIterResultObject(undefined, true);
-      });
+  // when we try to consume some more bytes, simply unpause the
+  // underlying stream.
+  self._read = function (n) {
+    debug('wrapped _read', n);
+    if (paused) {
+      paused = false;
+      stream.resume();
+    }
+  };
 
-    // 23.2.5.2.2 %SetIteratorPrototype% [ @@toStringTag ]
-    define($SetIteratorPrototype$, $$toStringTag, 'Set Iterator');
+  return self;
+};
 
-    // 23.2.5.3 Properties of Set Iterator Instances
+// exposed for testing purposes only.
+Readable._fromList = fromList;
 
-  }());
+// Pluck off n bytes from an array of buffers.
+// Length is the combined lengths of all the buffers in the list.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromList(n, state) {
+  // nothing buffered
+  if (state.length === 0) return null;
 
-  // ---------------------------------------
-  // 23.3 WeakMap Objects
-  // ---------------------------------------
+  var ret;
+  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
+    // read it all, truncate the list
+    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
+    state.buffer.clear();
+  } else {
+    // read part of list
+    ret = fromListPartial(n, state.buffer, state.decoder);
+  }
 
-  (function() {
-    // 23.3.1 The WeakMap Constructor
-    // 23.3.1.1 WeakMap ( [ iterable ] )
-    /** @constructor */
-    function WeakMap(/*iterable*/) {
-      var map = strict(this);
-      var iterable = arguments[0];
+  return ret;
+}
 
-      if (Type(map) !== 'object') throw TypeError();
-      if ('[[WeakMapData]]' in map) throw TypeError();
+// Extracts only enough buffered data to satisfy the amount requested.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function fromListPartial(n, list, hasStrings) {
+  var ret;
+  if (n < list.head.data.length) {
+    // slice is the same for buffers and strings
+    ret = list.head.data.slice(0, n);
+    list.head.data = list.head.data.slice(n);
+  } else if (n === list.head.data.length) {
+    // first chunk is a perfect match
+    ret = list.shift();
+  } else {
+    // result spans more than one buffer
+    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
+  }
+  return ret;
+}
 
-      if (iterable !== undefined) {
-        var adder = map['set'];
-        if (!IsCallable(adder)) throw TypeError();
-        var iter = GetIterator(ToObject(iterable));
-      }
-      set_internal(map, '[[WeakMapData]]', new EphemeronTable);
-      if (iter === undefined) return map;
-      while (true) {
-        var next = IteratorStep(iter);
-        if (next === false)
-          return map;
-        var nextValue = IteratorValue(next);
-        if (Type(nextValue) !== 'object') throw TypeError();
-        var k = nextValue[0];
-        var v = nextValue[1];
-        adder.call(map, k, v);
+// Copies a specified amount of characters from the list of buffered data
+// chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBufferString(n, list) {
+  var p = list.head;
+  var c = 1;
+  var ret = p.data;
+  n -= ret.length;
+  while (p = p.next) {
+    var str = p.data;
+    var nb = n > str.length ? str.length : n;
+    if (nb === str.length) ret += str;else ret += str.slice(0, n);
+    n -= nb;
+    if (n === 0) {
+      if (nb === str.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = str.slice(nb);
       }
+      break;
+    }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
 
-      return map;
+// Copies a specified amount of bytes from the list of buffered data chunks.
+// This function is designed to be inlinable, so please take care when making
+// changes to the function body.
+function copyFromBuffer(n, list) {
+  var ret = bufferShim.allocUnsafe(n);
+  var p = list.head;
+  var c = 1;
+  p.data.copy(ret);
+  n -= p.data.length;
+  while (p = p.next) {
+    var buf = p.data;
+    var nb = n > buf.length ? buf.length : n;
+    buf.copy(ret, ret.length - n, 0, nb);
+    n -= nb;
+    if (n === 0) {
+      if (nb === buf.length) {
+        ++c;
+        if (p.next) list.head = p.next;else list.head = list.tail = null;
+      } else {
+        list.head = p;
+        p.data = buf.slice(nb);
+      }
+      break;
     }
+    ++c;
+  }
+  list.length -= c;
+  return ret;
+}
 
-    if (!('WeakMap' in global) || OVERRIDE_NATIVE_FOR_TESTING)
-      global.WeakMap = WeakMap;
+function endReadable(stream) {
+  var state = stream._readableState;
 
-    // 23.3.2 Properties of the WeakMap Constructor
-    // 23.3.2.1 WeakMap.prototype
-    var $WeakMapPrototype$ = {};
-    WeakMap.prototype = $WeakMapPrototype$;
+  // If we get here before consuming all the bytes, then that is a
+  // bug in node.  Should never happen.
+  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
 
+  if (!state.endEmitted) {
+    state.ended = true;
+    processNextTick(endReadableNT, state, stream);
+  }
+}
 
+function endReadableNT(state, stream) {
+  // Check that we didn't get one last unshift.
+  if (!state.endEmitted && state.length === 0) {
+    state.endEmitted = true;
+    stream.readable = false;
+    stream.emit('end');
+  }
+}
 
-   // 23.3.2.2 WeakMap[ @@create ] ( )
-    // 23.3.3 Properties of the WeakMap Prototype Object
+function forEach(xs, f) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    f(xs[i], i);
+  }
+}
 
-    // 23.3.3.1 WeakMap.prototype.constructor
+function indexOf(xs, x) {
+  for (var i = 0, l = xs.length; i < l; i++) {
+    if (xs[i] === x) return i;
+  }
+  return -1;
+}
+}).call(this,require('_process'))
+},{"./_stream_duplex":15,"./internal/streams/BufferList":20,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"events":7,"inherits":9,"isarray":11,"process-nextick-args":12,"string_decoder/":22,"util":3}],18:[function(require,module,exports){
+// a transform stream is a readable/writable stream where you do
+// something with the data.  Sometimes it's called a "filter",
+// but that's not a great name for it, since that implies a thing where
+// some bits pass through, and others are simply ignored.  (That would
+// be a valid example of a transform, of course.)
+//
+// While the output is causally related to the input, it's not a
+// necessarily symmetric or synchronous transformation.  For example,
+// a zlib stream might take multiple plain-text writes(), and then
+// emit a single compressed chunk some time in the future.
+//
+// Here's how this works:
+//
+// The Transform stream has all the aspects of the readable and writable
+// stream classes.  When you write(chunk), that calls _write(chunk,cb)
+// internally, and returns false if there's a lot of pending writes
+// buffered up.  When you call read(), that calls _read(n) until
+// there's enough pending readable data buffered up.
+//
+// In a transform stream, the written data is placed in a buffer.  When
+// _read(n) is called, it transforms the queued up data, calling the
+// buffered _write cb's as it consumes chunks.  If consuming a single
+// written chunk would result in multiple output chunks, then the first
+// outputted bit calls the readcb, and subsequent chunks just go into
+// the read buffer, and will cause it to emit 'readable' if necessary.
+//
+// This way, back-pressure is actually determined by the reading side,
+// since _read has to be called to start processing a new chunk.  However,
+// a pathological inflate type of transform can cause excessive buffering
+// here.  For example, imagine a stream where every byte of input is
+// interpreted as an integer from 0-255, and then results in that many
+// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
+// 1kb of data being output.  In this case, you could write a very small
+// amount of input, and end up with a very large amount of output.  In
+// such a pathological inflating mechanism, there'd be no way to tell
+// the system to stop doing the transform.  A single 4MB write could
+// cause the system to run out of memory.
+//
+// However, even in such a pathological case, only a single written chunk
+// would be consumed, and then the rest would wait (un-transformed) until
+// the results of the previous transformed chunk were consumed.
 
-    // 23.3.3.2 WeakMap.prototype.delete ( key )
-    define(
-      WeakMap.prototype, 'delete',
-      function delete_(key) {
-        var M = strict(this);
-        if (Type(M) !== 'object') throw TypeError();
-        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
-        if (Type(key) !== 'object') throw TypeError('Expected object');
-        return M['[[WeakMapData]]'].remove(key);
-      });
+'use strict';
 
-    // 23.3.3.3 WeakMap.prototype.get ( key )
-    define(
-      WeakMap.prototype, 'get',
-      function get(key, defaultValue) {
-        var M = strict(this);
-        if (Type(M) !== 'object') throw TypeError();
-        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
-        if (Type(key) !== 'object') throw TypeError('Expected object');
-        return M['[[WeakMapData]]'].get(key, defaultValue);
-      });
+module.exports = Transform;
 
-    // 23.3.3.4 WeakMap.prototype.has ( key )
-    define(
-      WeakMap.prototype, 'has',
-      function has(key) {
-        var M = strict(this);
-        if (Type(M) !== 'object') throw TypeError();
-        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
-        if (Type(key) !== 'object') throw TypeError('Expected object');
-        return M['[[WeakMapData]]'].has(key);
-      });
+var Duplex = require('./_stream_duplex');
 
-    // 23.3.3.5 WeakMap.prototype.set ( key , value )
-    define(
-      WeakMap.prototype, 'set',
-      function set(key, value) {
-        var M = strict(this);
-        if (Type(M) !== 'object') throw TypeError();
-        if (M['[[WeakMapData]]'] === undefined) throw TypeError();
-        if (Type(key) !== 'object') throw TypeError('Expected object');
-        M['[[WeakMapData]]'].set(key, value);
-        return M;
-      });
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
-    // 23.3.3.6 WeakMap.prototype [ @@toStringTag ]
-    define(global.WeakMap.prototype, $$toStringTag, 'WeakMap');
+util.inherits(Transform, Duplex);
 
-    // 23.3.4 Properties of WeakMap Instances
+function TransformState(stream) {
+  this.afterTransform = function (er, data) {
+    return afterTransform(stream, er, data);
+  };
 
-    // Polyfills for incomplete native implementations:
-    (function() {
-      var wm = new global.WeakMap();
-      var orig = global.WeakMap.prototype.set;
-      define(global.WeakMap.prototype, 'set', function set() {
-        orig.apply(this, arguments);
-        return this;
-      }, wm.set({}, 0) !== wm);
-    }());
-  }());
+  this.needTransform = false;
+  this.transforming = false;
+  this.writecb = null;
+  this.writechunk = null;
+  this.writeencoding = null;
+}
 
-  // ---------------------------------------
-  // 23.4 WeakSet Objects
-  // ---------------------------------------
+function afterTransform(stream, er, data) {
+  var ts = stream._transformState;
+  ts.transforming = false;
 
-  (function() {
-    // 23.4.1 The WeakSet Constructor
-    // 23.4.1.1 WeakSet ( [ iterable ] )
-    /** @constructor */
-    function WeakSet(/*iterable*/) {
-      var set = strict(this);
-      var iterable = arguments[0];
+  var cb = ts.writecb;
 
-      if (Type(set) !== 'object') throw TypeError();
-      if ('[[WeakSetData]]' in set) throw TypeError();
+  if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));
 
-      if (iterable !== undefined) {
-        var adder = set['add'];
-        if (!IsCallable(adder)) throw TypeError();
-        var iter = GetIterator(ToObject(iterable));
-      }
-      set_internal(set, '[[WeakSetData]]', new EphemeronTable);
-      if (iter === undefined) return set;
-      while (true) {
-        var next = IteratorStep(iter);
-        if (next === false)
-          return set;
-        var nextValue = IteratorValue(next);
-        adder.call(set, nextValue);
-      }
+  ts.writechunk = null;
+  ts.writecb = null;
 
-      return set;
-    }
+  if (data !== null && data !== undefined) stream.push(data);
 
-    if (!('WeakSet' in global) || OVERRIDE_NATIVE_FOR_TESTING)
-      global.WeakSet = WeakSet;
+  cb(er);
 
-    // 23.4.2 Properties of the WeakSet Constructor
-    // 23.4.2.1 WeakSet.prototype
-    var $WeakSetPrototype$ = {};
-    WeakSet.prototype = $WeakSetPrototype$;
+  var rs = stream._readableState;
+  rs.reading = false;
+  if (rs.needReadable || rs.length < rs.highWaterMark) {
+    stream._read(rs.highWaterMark);
+  }
+}
 
-    // 23.4.3 Properties of the WeakSet Prototype Object
-    // 23.4.3.1 WeakSet.prototype.add (value )
-    define(
-      WeakSet.prototype, 'add',
-      function add(value) {
-        var S = strict(this);
-        if (Type(S) !== 'object') throw TypeError();
-        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
-        if (Type(value) !== 'object') throw TypeError('Expected object');
-        S['[[WeakSetData]]'].set(value, true);
-        return S;
-      });
+function Transform(options) {
+  if (!(this instanceof Transform)) return new Transform(options);
+
+  Duplex.call(this, options);
 
-    // 23.4.3.2 WeakSet.prototype.constructor
-    // 23.4.3.3 WeakSet.prototype.delete ( value )
-    define(
-      WeakSet.prototype, 'delete',
-      function delete_(value) {
-        var S = strict(this);
-        if (Type(S) !== 'object') throw TypeError();
-        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
-        if (Type(value) !== 'object') throw TypeError('Expected object');
-        return S['[[WeakSetData]]'].remove(value);
-      });
+  this._transformState = new TransformState(this);
 
-    // 23.4.3.4 WeakSet.prototype.has ( value )
-    define(
-      WeakSet.prototype, 'has',
-      function has(key) {
-        var S = strict(this);
-        if (Type(S) !== 'object') throw TypeError();
-        if (S['[[WeakSetData]]'] === undefined) throw TypeError();
-        if (Type(key) !== 'object') throw TypeError('Expected object');
-        return S['[[WeakSetData]]'].has(key);
-      });
+  var stream = this;
 
-    // 23.4.3.5 WeakSet.prototype [ @@toStringTag ]
-    define(global.WeakSet.prototype, $$toStringTag, 'WeakSet');
+  // start out asking for a readable event once data is transformed.
+  this._readableState.needReadable = true;
 
-    // 23.4.4 Properties of WeakSet Instances
+  // we have implemented the _read method, and done the other things
+  // that Readable wants before the first _read call, so unset the
+  // sync guard flag.
+  this._readableState.sync = false;
 
-    // Polyfills for incomplete native implementations:
-    (function() {
-      var ws = new global.WeakSet();
-      var orig = global.WeakSet.prototype.add;
-      define(global.WeakSet.prototype, 'add', function add() {
-        orig.apply(this, arguments);
-        return this;
-      }, ws.add({}) !== ws);
-    }());
-  }());
+  if (options) {
+    if (typeof options.transform === 'function') this._transform = options.transform;
 
-  // ---------------------------------------
-  // 24 Structured Data
-  // ---------------------------------------
+    if (typeof options.flush === 'function') this._flush = options.flush;
+  }
 
-  // ---------------------------------------
-  // 24.1 ArrayBuffer Objects
-  // ---------------------------------------
+  // When the writable side finishes, then flush out anything remaining.
+  this.once('prefinish', function () {
+    if (typeof this._flush === 'function') this._flush(function (er, data) {
+      done(stream, er, data);
+    });else done(stream);
+  });
+}
 
-  // See typedarray.js for TypedArray polyfill
+Transform.prototype.push = function (chunk, encoding) {
+  this._transformState.needTransform = false;
+  return Duplex.prototype.push.call(this, chunk, encoding);
+};
 
-  (function() {
-    if (!('ArrayBuffer' in global))
-      return;
+// This is the part where you do stuff!
+// override this function in implementation classes.
+// 'chunk' is an input chunk.
+//
+// Call `push(newChunk)` to pass along transformed output
+// to the readable side.  You may call 'push' zero or more times.
+//
+// Call `cb(err)` when you are done with this chunk.  If you pass
+// an error, then that'll put the hurt on the whole operation.  If you
+// never call cb(), then you'll never get another chunk.
+Transform.prototype._transform = function (chunk, encoding, cb) {
+  throw new Error('_transform() is not implemented');
+};
 
-    // 24.1.1 Abstract Operations For ArrayBuffer Objects
-    // 24.1.1.1 AllocateArrayBuffer( constructor, byteLength )
-    // 24.1.1.2 IsDetachedBuffer( arrayBuffer )
-    // 24.1.1.3 DetachArrayBuffer( arrayBuffer )
-    // 24.1.1.4 CloneArrayBuffer( srcBuffer, srcByteOffset [, cloneConstructor] )
-    // 24.1.1.5 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isLittleEndian )
-    // 24.1.1.6 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isLittleEndian )
-    // 24.1.2 The ArrayBuffer Constructor
-    // 24.1.2.1 ArrayBuffer( length )
-    // 24.1.3 Properties of the ArrayBuffer Constructor
+Transform.prototype._write = function (chunk, encoding, cb) {
+  var ts = this._transformState;
+  ts.writecb = cb;
+  ts.writechunk = chunk;
+  ts.writeencoding = encoding;
+  if (!ts.transforming) {
+    var rs = this._readableState;
+    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
+  }
+};
 
-    // 24.1.3.1 ArrayBuffer.isView ( arg )
-    define(
-      ArrayBuffer, 'isView',
-      function isView(arg) {
-        if (Type(arg) !== 'object') return false;
-        if ('buffer' in arg && arg.buffer instanceof ArrayBuffer) return true;
-        return false;
-      });
+// Doesn't matter what the args are here.
+// _transform does all the work.
+// That we got here means that the readable side wants more data.
+Transform.prototype._read = function (n) {
+  var ts = this._transformState;
 
-    // 24.1.3.2 ArrayBuffer.prototype
-    // 24.1.3.3 get ArrayBuffer [ @@species ]
-    // 24.1.4 Properties of the ArrayBuffer Prototype Object
-    // 24.1.4.1 get ArrayBuffer.prototype.byteLength
-    // 24.1.4.2 ArrayBuffer.prototype.constructor
-    // 24.1.4.3 ArrayBuffer.prototype.slice ( start , end)
+  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
+    ts.transforming = true;
+    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
+  } else {
+    // mark that we need a transform, so that any data that comes in
+    // will get processed, now that we've asked for it.
+    ts.needTransform = true;
+  }
+};
 
-    // 24.1.4.4 ArrayBuffer.prototype [ @@toStringTag ]
-    define(ArrayBuffer.prototype, $$toStringTag, 'ArrayBuffer');
+function done(stream, er, data) {
+  if (er) return stream.emit('error', er);
 
-    // 24.1.5 Properties of the ArrayBuffer Instances
-  }());
+  if (data !== null && data !== undefined) stream.push(data);
 
-  // ---------------------------------------
-  // 24.2 DataView Objects
-  // ---------------------------------------
+  // if there's nothing in the write buffer, then that means
+  // that nothing more will ever be provided
+  var ws = stream._writableState;
+  var ts = stream._transformState;
 
-  // See typedarray.js for TypedArray polyfill
+  if (ws.length) throw new Error('Calling transform done when ws.length != 0');
 
-  (function() {
-    if (!('DataView' in global))
-      return;
+  if (ts.transforming) throw new Error('Calling transform done when still transforming');
 
-    // 24.2.1 Abstract Operations For DataView Objects
-    // 24.2.1.1 GetViewValue(view, requestIndex, isLittleEndian, type)
-    // 24.2.1.2 SetViewValue(view, requestIndex, isLittleEndian, type, value)
-    // 24.2.2 The DataView Constructor
-    // 24.2.2.1 DataView (buffer [ , byteOffset [ , byteLength ] ] )
-    // 24.2.3 Properties of the DataView Constructor
-    // 24.2.3.1 DataView.prototype
-    // 24.2.4 Properties of the DataView Prototype Object
-    // 24.2.4.1 get DataView.prototype.buffer
-    // 24.2.4.2 get DataView.prototype.byteLength
-    // 24.2.4.3 get DataView.prototype.byteOffset
-    // 24.2.4.4 DataView.prototype.constructor
-    // 24.2.4.5 DataView.prototype.getFloat32 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.6 DataView.prototype.getFloat64 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.7 DataView.prototype.getInt8 ( byteOffset )
-    // 24.2.4.8 DataView.prototype.getInt16 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.9 DataView.prototype.getInt32 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.10 DataView.prototype.getUint8 ( byteOffset )
-    // 24.2.4.11 DataView.prototype.getUint16 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.12 DataView.prototype.getUint32 ( byteOffset [ , littleEndian ] )
-    // 24.2.4.13 DataView.prototype.setFloat32 ( byteOffset, value [ , littleEndian ] )
-    // 24.2.4.14 DataView.prototype.setFloat64 ( byteOffset, value [ , littleEndian ] )
-    // 24.2.4.15 DataView.prototype.setInt8 ( byteOffset, value )
-    // 24.2.4.16 DataView.prototype.setInt16 ( byteOffset, value [ , littleEndian ] )
-    // 24.2.4.17 DataView.prototype.setInt32 ( byteOffset, value [ , littleEndian ] )
-    // 24.2.4.18 DataView.prototype.setUint8 ( byteOffset, value )
-    // 24.2.4.19 DataView.prototype.setUint16 ( byteOffset, value [ , littleEndian ] )
-    // 24.2.4.20 DataView.prototype.setUint32 ( byteOffset, value [ , littleEndian ] )
+  return stream.push(null);
+}
+},{"./_stream_duplex":15,"core-util-is":6,"inherits":9}],19:[function(require,module,exports){
+(function (process){
+// A bit simpler than readable streams.
+// Implement an async ._write(chunk, encoding, cb), and it'll handle all
+// the drain event emission and buffering.
 
-    // 24.2.4.21 DataView.prototype[ @@toStringTag ]
-    define(DataView.prototype, $$toStringTag, 'DataView');
+'use strict';
 
-    // 24.2.5 Properties of DataView Instances
-  }());
+module.exports = Writable;
 
-  // ---------------------------------------
-  // 24.3 The JSON Object
-  // ---------------------------------------
+/*<replacement>*/
+var processNextTick = require('process-nextick-args');
+/*</replacement>*/
 
-  // 24.3.1 JSON.parse ( text [ , reviver ] )
-  // 24.3.2 JSON.stringify ( value [ , replacer [ , space ] ] )
-  // 24.3.3 JSON [ @@toStringTag ]
-  define(JSON, $$toStringTag, 'JSON');
+/*<replacement>*/
+var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
+/*</replacement>*/
 
-  // ---------------------------------------
-  // 25.1 Iteration
-  // ---------------------------------------
+/*<replacement>*/
+var Duplex;
+/*</replacement>*/
 
-  // 25.1.1 Common Iteration Interfaces
-  // 25.1.1.1 The Iterable Interface
-  // 25.1.1.2 The Iterator Interface
-  // 25.1.1.3 The IteratorResult Interface
+Writable.WritableState = WritableState;
 
-  // 25.1.2 The %IteratorPrototype% Object
-  // Defined earlier, so other prototypes can reference it.
-  // 25.1.2.1 %IteratorPrototype% [ @@iterator ] ( )
-  define($IteratorPrototype$, $$iterator, function() {
-    return this;
-  });
+/*<replacement>*/
+var util = require('core-util-is');
+util.inherits = require('inherits');
+/*</replacement>*/
 
+/*<replacement>*/
+var internalUtil = {
+  deprecate: require('util-deprecate')
+};
+/*</replacement>*/
 
-  // ---------------------------------------
-  // 25.4 Promise Objects
-  // ---------------------------------------
+/*<replacement>*/
+var Stream = require('./internal/streams/stream');
+/*</replacement>*/
 
-  (function() {
-    // 25.4 Promise Objects
+var Buffer = require('buffer').Buffer;
+/*<replacement>*/
+var bufferShim = require('buffer-shims');
+/*</replacement>*/
 
-    // 25.4.1 Promise Abstract Operations
+util.inherits(Writable, Stream);
 
-    // 25.4.1.1 PromiseCapability Records
-    // 25.4.1.1.1 IfAbruptRejectPromise ( value, capability )
+function nop() {}
 
-    function IfAbruptRejectPromise(value, capability) {
-      var rejectResult = capability['[[Reject]]'].call(undefined, value);
-      return capability['[[Promise]]'];
-    }
+function WriteReq(chunk, encoding, cb) {
+  this.chunk = chunk;
+  this.encoding = encoding;
+  this.callback = cb;
+  this.next = null;
+}
 
-    // 25.4.1.2 PromiseReaction Records
+function WritableState(options, stream) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-    // 25.4.1.3 CreateResolvingFunctions ( promise )
+  options = options || {};
 
-    function CreateResolvingFunctions(promise) {
-      var alreadyResolved = {'[[value]]': false};
-      var resolve = PromiseResolveFunction();
-      set_internal(resolve, '[[Promise]]',  promise);
-      set_internal(resolve, '[[AlreadyResolved]]', alreadyResolved);
-      var reject = PromiseRejectFunction();
-      set_internal(reject, '[[Promise]]', promise);
-      set_internal(reject, '[[AlreadyResolved]]', alreadyResolved);
-      return { '[[Resolve]]': resolve, '[[Reject]]': reject};
-    }
+  // object stream flag to indicate whether or not this stream
+  // contains buffers or objects.
+  this.objectMode = !!options.objectMode;
 
-    // 25.4.1.3.1 Promise Reject Functions
+  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
 
-    function PromiseRejectFunction() {
-      var F = function(reason) {
-        console.assert(Type(F['[[Promise]]']) === 'object');
-        var promise = F['[[Promise]]'];
-        var alreadyResolved = F['[[AlreadyResolved]]'];
-        if (alreadyResolved['[[value]]']) return undefined;
-        set_internal(alreadyResolved, '[[value]]', true);
-        return RejectPromise(promise, reason);
-      };
-      return F;
-    }
+  // the point at which write() starts returning false
+  // Note: 0 is a valid value, means that we always return false if
+  // the entire buffer is not flushed immediately on write()
+  var hwm = options.highWaterMark;
+  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
+  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
 
-    // 25.4.1.3.2 Promise Resolve Functions
+  // cast to ints.
+  this.highWaterMark = ~~this.highWaterMark;
 
-    function PromiseResolveFunction() {
-      var F = function(resolution) {
-        console.assert(Type(F['[[Promise]]']) === 'object');
-        var promise = F['[[Promise]]'];
-        var alreadyResolved = F['[[AlreadyResolved]]'];
-        if (alreadyResolved['[[value]]']) return undefined;
-        set_internal(alreadyResolved, '[[value]]', true);
+  // drain event flag.
+  this.needDrain = false;
+  // at the start of calling end()
+  this.ending = false;
+  // when end() has been called, and returned
+  this.ended = false;
+  // when 'finish' is emitted
+  this.finished = false;
 
-        if (SameValue(resolution, promise))  {
-          var selfResolutionError = TypeError();
-          return RejectPromise(promise, selfResolutionError);
-        }
-        if (Type(resolution) !== 'object')
-          return FulfillPromise(promise, resolution);
-        try {
-          var then = resolution['then'];
-        } catch(then) {
-          return RejectPromise(promise, then);
-        }
-        if (!IsCallable(then))
-          return FulfillPromise(promise, resolution);
-        EnqueueJob('PromiseJobs', PromiseResolveThenableJob, [promise, resolution, then]);
-        return undefined;
-      };
-      return F;
-    }
+  // should we decode strings into buffers before passing to _write?
+  // this is here so that some node-core streams can optimize string
+  // handling at a lower level.
+  var noDecode = options.decodeStrings === false;
+  this.decodeStrings = !noDecode;
 
-    // 25.4.1.4 FulfillPromise ( promise, value )
+  // Crypto is kind of old and crusty.  Historically, its default string
+  // encoding is 'binary' so we have to make this configurable.
+  // Everything else in the universe uses 'utf8', though.
+  this.defaultEncoding = options.defaultEncoding || 'utf8';
 
-    function FulfillPromise(promise, value) {
-      console.assert(promise['[[PromiseState]]'] === 'pending');
-      var reactions = promise['[[PromiseFulfillReactions]]'];
-      set_internal(promise, '[[PromiseResult]]', value);
-      set_internal(promise, '[[PromiseFulfillReactions]]', undefined);
-      set_internal(promise, '[[PromiseRejectReactions]]', undefined);
-      set_internal(promise, '[[PromiseState]]', 'fulfilled');
-      return TriggerPromiseReactions(reactions, value);
-    }
+  // not an actual buffer we keep track of, but a measurement
+  // of how much we're waiting to get pushed to some underlying
+  // socket or file.
+  this.length = 0;
 
-    // 25.4.1.5 NewPromiseCapability ( C )
+  // a flag to see when we're in the middle of a write.
+  this.writing = false;
 
-    function NewPromiseCapability(c) {
-      // To keep Promise hermetic, this doesn't look much like the spec.
-      return CreatePromiseCapabilityRecord(undefined, c);
-    }
+  // when true all writes will be buffered until .uncork() call
+  this.corked = 0;
 
-    // 25.4.1.5.1 CreatePromiseCapabilityRecord ( promise, constructor )
+  // a flag to be able to tell if the onwrite cb is called immediately,
+  // or on a later tick.  We set this to true at first, because any
+  // actions that shouldn't happen until "later" should generally also
+  // not happen before the first write call.
+  this.sync = true;
 
-    function CreatePromiseCapabilityRecord(promise, constructor) {
-      // To keep Promise hermetic, this doesn't look much like the spec.
-      console.assert(IsConstructor(constructor));
-      var promiseCapability = {};
-      set_internal(promiseCapability, '[[Promise]]', promise);
-      set_internal(promiseCapability, '[[Resolve]]', undefined);
-      set_internal(promiseCapability, '[[Reject]]', undefined);
-      var executor = GetCapabilitiesExecutor();
-      set_internal(executor, '[[Capability]]', promiseCapability);
+  // a flag to know if we're processing previously buffered items, which
+  // may call the _write() callback in the same tick, so that we don't
+  // end up in an overlapped onwrite situation.
+  this.bufferProcessing = false;
 
-      // NOTE: Differs from spec; object is constructed here
-      var constructorResult = promise = new constructor(executor);
-      set_internal(promiseCapability, '[[Promise]]', promise);
+  // the callback that's passed to _write(chunk,cb)
+  this.onwrite = function (er) {
+    onwrite(stream, er);
+  };
 
-      if (!IsCallable(promiseCapability['[[Resolve]]'])) throw TypeError();
-      if (!IsCallable(promiseCapability['[[Reject]]'])) throw TypeError();
-      if (Type(constructorResult) === 'object' && !SameValue(promise, constructorResult)) throw TypeError();
-      return promiseCapability;
-    }
+  // the callback that the user supplies to write(chunk,encoding,cb)
+  this.writecb = null;
 
-    // 25.4.1.5.2 GetCapabilitiesExecutor Functions
+  // the amount that is being written when _write is called.
+  this.writelen = 0;
 
-    function GetCapabilitiesExecutor() {
-      var F = function(resolve, reject) {
-        console.assert(F['[[Capability]]']);
-        var promiseCapability = F['[[Capability]]'];
-        if (promiseCapability['[[Resolve]]'] !== undefined) throw TypeError();
-        if (promiseCapability['[[Reject]]'] !== undefined) throw TypeError();
-        set_internal(promiseCapability, '[[Resolve]]', resolve);
-        set_internal(promiseCapability, '[[Reject]]', reject);
-        return undefined;
-      };
-      return F;
-    }
+  this.bufferedRequest = null;
+  this.lastBufferedRequest = null;
 
-    // 25.4.1.6 IsPromise ( x )
+  // number of pending user-supplied write callbacks
+  // this must be 0 before 'finish' can be emitted
+  this.pendingcb = 0;
 
-    function IsPromise(x) {
-      if (Type(x) !== 'object') return false;
-      if (!('[[PromiseState]]' in x)) return false;
-      if (x['[[PromiseState]]'] === undefined) return false;
-      return true;
-    }
+  // emit prefinish if the only thing we're waiting for is _write cbs
+  // This is relevant for synchronous Transform streams
+  this.prefinished = false;
 
-    // 25.4.1.7 RejectPromise ( promise, reason )
+  // True if the error was already emitted and should not be thrown again
+  this.errorEmitted = false;
 
-    function RejectPromise(promise, reason) {
-      console.assert(promise['[[PromiseState]]'] === 'pending');
-      var reactions = promise['[[PromiseRejectReactions]]'];
-      set_internal(promise, '[[PromiseResult]]', reason);
-      set_internal(promise, '[[PromiseFulfillReactions]]', undefined);
-      set_internal(promise, '[[PromiseRejectReactions]]', undefined);
-      set_internal(promise, '[[PromiseState]]', 'rejected');
-      return TriggerPromiseReactions(reactions, reason);
-    }
+  // count buffered requests
+  this.bufferedRequestCount = 0;
 
-    // 25.4.1.8 TriggerPromiseReactions ( reactions, argument )
+  // allocate the first CorkedRequest, there is always
+  // one allocated and free to use, and we maintain at most two
+  this.corkedRequestsFree = new CorkedRequest(this);
+}
 
-    function TriggerPromiseReactions(reactions, argument) {
-      for (var i = 0, len = reactions.length; i < len; ++i)
-        EnqueueJob('PromiseJobs', PromiseReactionJob, [reactions[i], argument]);
-      return undefined;
-    }
+WritableState.prototype.getBuffer = function getBuffer() {
+  var current = this.bufferedRequest;
+  var out = [];
+  while (current) {
+    out.push(current);
+    current = current.next;
+  }
+  return out;
+};
 
-    // 25.4.2 Promise Jobs
+(function () {
+  try {
+    Object.defineProperty(WritableState.prototype, 'buffer', {
+      get: internalUtil.deprecate(function () {
+        return this.getBuffer();
+      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
+    });
+  } catch (_) {}
+})();
 
-    // 25.4.2.1 PromiseReactionJob ( reaction, argument )
+// Test _writableState for inheritance to account for Duplex streams,
+// whose prototype chain only points to Readable.
+var realHasInstance;
+if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
+  realHasInstance = Function.prototype[Symbol.hasInstance];
+  Object.defineProperty(Writable, Symbol.hasInstance, {
+    value: function (object) {
+      if (realHasInstance.call(this, object)) return true;
 
-    function PromiseReactionJob(reaction, argument) {
-      var promiseCapability = reaction['[[Capabilities]]'];
-      var handler = reaction['[[Handler]]'];
-      var handlerResult, status;
-      try {
-        if (handler === 'Identity') handlerResult = argument;
-        else if (handler === 'Thrower') throw argument;
-        else handlerResult = handler.call(undefined, argument);
-      } catch (handlerResult) {
-        status = promiseCapability['[[Reject]]'].call(undefined, handlerResult);
-        NextJob(status); return;
-      }
-      status = promiseCapability['[[Resolve]]'].call(undefined, handlerResult);
-      NextJob(status);
+      return object && object._writableState instanceof WritableState;
     }
+  });
+} else {
+  realHasInstance = function (object) {
+    return object instanceof this;
+  };
+}
 
-    // 25.4.2.2 PromiseResolveThenableJob ( promiseToResolve, thenable, then)
+function Writable(options) {
+  Duplex = Duplex || require('./_stream_duplex');
 
-    function PromiseResolveThenableJob(promiseToResolve, thenable, then) {
-      // SPEC BUG: promise vs. promiseToResolve
-      var resolvingFunctions = CreateResolvingFunctions(promiseToResolve);
-      try {
-        var thenCallResult = then.call(thenable, resolvingFunctions['[[Resolve]]'],
-                                       resolvingFunctions['[[Reject]]']);
-      } catch (thenCallResult) {
-        var status = resolvingFunctions['[[Reject]]'].call(undefined, thenCallResult);
-        NextJob(status); return;
-      }
-      NextJob(thenCallResult);
-    }
+  // Writable ctor is applied to Duplexes, too.
+  // `realHasInstance` is necessary because using plain `instanceof`
+  // would return false, as no `_writableState` property is attached.
 
-    // 25.4.3 The Promise Constructor
+  // Trying to use the custom `instanceof` for Writable here will also break the
+  // Node.js LazyTransform implementation, which has a non-trivial getter for
+  // `_writableState` that would lead to infinite recursion.
+  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
+    return new Writable(options);
+  }
 
-    // 25.4.3.1 Promise ( executor )
+  this._writableState = new WritableState(options, this);
 
-    function Promise(executor) {
-      var config = { configurable: false, enumerable: false, writable: true, value: undefined };
-      Object.defineProperty(this, '[[PromiseState]]', config);
-      Object.defineProperty(this, '[[PromiseConstructor]]', config);
-      Object.defineProperty(this, '[[PromiseResult]]', config);
-      Object.defineProperty(this, '[[PromiseFulfillReactions]]', config);
-      Object.defineProperty(this, '[[PromiseRejectReactions]]', config);
+  // legacy.
+  this.writable = true;
 
-      var promise = this;
-      if (Type(promise) !== 'object') throw new TypeError();
-      if (!('[[PromiseState]]' in promise)) throw TypeError();
-      if (promise['[[PromiseState]]'] !== undefined) throw TypeError();
-      if (!IsCallable(executor)) throw TypeError();
+  if (options) {
+    if (typeof options.write === 'function') this._write = options.write;
 
-      set_internal(promise, '[[PromiseConstructor]]', Promise);
+    if (typeof options.writev === 'function') this._writev = options.writev;
+  }
 
-      return InitializePromise(promise, executor);
-    }
+  Stream.call(this);
+}
 
-    // 25.4.3.1.1 InitializePromise ( promise, executor )
+// Otherwise people can pipe Writable streams, which is just wrong.
+Writable.prototype.pipe = function () {
+  this.emit('error', new Error('Cannot pipe, not readable'));
+};
 
-    function InitializePromise(promise, executor) {
-      console.assert('[[PromiseState]]' in promise);
-      console.assert(IsCallable(executor));
-      set_internal(promise, '[[PromiseState]]', 'pending');
-      set_internal(promise, '[[PromiseFulfillReactions]]', []);
-      set_internal(promise, '[[PromiseRejectReactions]]', []);
-      var resolvingFunctions = CreateResolvingFunctions(promise);
-      try {
-        var completion = executor.call(undefined, resolvingFunctions['[[Resolve]]'],
-                                       resolvingFunctions['[[Reject]]']);
-      } catch (completion) {
-        var status = resolvingFunctions['[[Reject]]'].call(undefined, completion);
-      }
-      return promise;
-    }
+function writeAfterEnd(stream, cb) {
+  var er = new Error('write after end');
+  // TODO: defer error events consistently everywhere, not just the cb
+  stream.emit('error', er);
+  processNextTick(cb, er);
+}
 
-    // 25.4.4 Properties of the Promise Constructor
-    // 25.4.4.1 Promise.all ( iterable )
+// Checks that a user-supplied chunk is valid, especially for the particular
+// mode the stream is in. Currently this means that `null` is never accepted
+// and undefined/non-string values are only allowed in object mode.
+function validChunk(stream, state, chunk, cb) {
+  var valid = true;
+  var er = false;
 
-    define(Promise, 'all', function all(iterable) {
-      var c = strict(this);
-      var promiseCapability = NewPromiseCapability(c);
-      try {
-        var iterator = GetIterator(iterable);
-      } catch (value) {
-        promiseCapability['[[Reject]]'].call(undefined, value);
-        return promiseCapability['[[Promise]]'];
-      }
-      var values = [];
-      var remainingElementsCount = { value: 1 };
-      var index = 0;
-      while (true) {
-        try {
-          var next = IteratorStep(iterator);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        if (!next) {
-          remainingElementsCount.value -= 1;
-          if (remainingElementsCount.value === 0) {
-            var resolveResult = promiseCapability['[[Resolve]]'].apply(undefined, values);
+  if (chunk === null) {
+    er = new TypeError('May not write null values to stream');
+  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
+    er = new TypeError('Invalid non-string/buffer chunk');
+  }
+  if (er) {
+    stream.emit('error', er);
+    processNextTick(cb, er);
+    valid = false;
+  }
+  return valid;
+}
 
+Writable.prototype.write = function (chunk, encoding, cb) {
+  var state = this._writableState;
+  var ret = false;
+  var isBuf = Buffer.isBuffer(chunk);
 
-          }
-          return promiseCapability['[[Promise]]'];
-        }
-        try {
-          var nextValue = IteratorValue(next);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        try {
-          var nextPromise = c.resolve(nextValue);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        var resolveElement = PromiseAllResolveElementFunction();
-        set_internal(resolveElement, '[[AlreadyCalled]]', { value: false });
-        set_internal(resolveElement, '[[Index]]', index);
-        set_internal(resolveElement, '[[Values]]', values);
-        set_internal(resolveElement, '[[Capabilities]]', promiseCapability);
-        set_internal(resolveElement, '[[RemainingElements]]', remainingElementsCount);
-        remainingElementsCount.value += 1;
-        try {
-          var result = nextPromise.then(resolveElement, promiseCapability['[[Reject]]']);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        index += 1;
-      }
-    });
+  if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
 
-    // 25.4.4.1.1 Promise.all Resolve Element Functions
+  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
 
-    function PromiseAllResolveElementFunction() {
-      var F = function(x) {
-        var alreadyCalled = F['[[AlreadyCalled]]'];
-        if (alreadyCalled.value) return undefined;
-        alreadyCalled.value = true;
-        var index = F['[[Index]]'];
-        var values = F['[[Values]]'];
-        var promiseCapability = F['[[Capabilities]]'];
-        var remainingElementsCount = F['[[RemainingElements]]'];
-        try {
-          values[index] = x;
-        } catch (result) {
-          promiseCapability['[[Reject]]'].call(undefined, result);
-          return promiseCapability['[[Promise]]'];
-        }
-        remainingElementsCount.value -= 1;
-        if (remainingElementsCount.value === 0)
-          return promiseCapability['[[Resolve]]'].call(undefined, values);
-        return undefined;
-      };
-      return F;
-    }
+  if (typeof cb !== 'function') cb = nop;
 
-    // 25.4.4.2 Promise.prototype
+  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
+    state.pendingcb++;
+    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
+  }
 
-    Promise.prototype = {};
+  return ret;
+};
 
-    // 25.4.4.3 Promise.race ( iterable )
+Writable.prototype.cork = function () {
+  var state = this._writableState;
 
-    define(Promise, 'race', function race(iterable) {
-      var c = strict(this);
-      var promiseCapability = NewPromiseCapability(c);
-      try {
-        var iterator = GetIterator(iterable);
-      } catch (value) {
-        promiseCapability['[[Reject]]'].call(undefined, value);
-        return promiseCapability['[[Promise]]'];
-      }
-      while (true) {
-        try {
-          var next = IteratorStep(iterator);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        if (!next) return promiseCapability['[[Promise]]'];
-        try {
-          var nextValue = IteratorValue(next);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        try {
-          var nextPromise = c.resolve(nextValue);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-        try {
-          nextPromise.then(promiseCapability['[[Resolve]]'], promiseCapability['[[Reject]]']);
-        } catch (value) {
-          promiseCapability['[[Reject]]'].call(undefined, value);
-          return promiseCapability['[[Promise]]'];
-        }
-      }
-    });
+  state.corked++;
+};
 
-    // 25.4.4.4 Promise.reject ( r )
+Writable.prototype.uncork = function () {
+  var state = this._writableState;
 
-    define(Promise, 'reject', function reject(r) {
-      var c = strict(this);
-      var promiseCapability = NewPromiseCapability(c);
-      var rejectResult = promiseCapability['[[Reject]]'].call(undefined, r);
-      return promiseCapability['[[Promise]]'];
-    });
+  if (state.corked) {
+    state.corked--;
 
-    // 25.4.4.5 Promise.resolve ( x )
+    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
+  }
+};
 
-    define(Promise, 'resolve', function resolve(x) {
-      var c = strict(this);
-      if (IsPromise(x)) {
-        var constructor = x['[[PromiseConstructor]]'];
-        if (SameValue(constructor, c)) return x;
-      }
-      var promiseCapability = NewPromiseCapability(c);
-      var resolveResult = promiseCapability['[[Resolve]]'].call(undefined, x);
-      return promiseCapability['[[Promise]]'];
-    });
+Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
+  // node::ParseEncoding() requires lower case.
+  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
+  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
+  this._writableState.defaultEncoding = encoding;
+  return this;
+};
 
-    // 25.4.4.6 Promise [ @@create ] ( )
-    // 25.4.4.6.1 AllocatePromise ( constructor )
-    // 25.4.5 Properties of the Promise Prototype Object
-    // 25.4.5.1 Promise.prototype.catch ( onRejected )
+function decodeChunk(state, chunk, encoding) {
+  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
+    chunk = bufferShim.from(chunk, encoding);
+  }
+  return chunk;
+}
 
-    define(Promise.prototype, 'catch', function catch_(onRejected) {
-      var promise = this;
-      return promise.then(undefined, onRejected);
-    });
+// if we're already writing something, then just put this
+// in the queue, and wait our turn.  Otherwise, call _write
+// If we return false, then we need a drain event, so set that flag.
+function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
+  if (!isBuf) {
+    chunk = decodeChunk(state, chunk, encoding);
+    if (Buffer.isBuffer(chunk)) encoding = 'buffer';
+  }
+  var len = state.objectMode ? 1 : chunk.length;
 
-    // 25.4.5.2 Promise.prototype.constructor
+  state.length += len;
 
-    Promise.prototype.constructor = Promise;
+  var ret = state.length < state.highWaterMark;
+  // we must ensure that previous needDrain will not be reset to false.
+  if (!ret) state.needDrain = true;
 
-    // 25.4.5.3 Promise.prototype.then ( onFulfilled , onRejected )
+  if (state.writing || state.corked) {
+    var last = state.lastBufferedRequest;
+    state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
+    if (last) {
+      last.next = state.lastBufferedRequest;
+    } else {
+      state.bufferedRequest = state.lastBufferedRequest;
+    }
+    state.bufferedRequestCount += 1;
+  } else {
+    doWrite(stream, state, false, len, chunk, encoding, cb);
+  }
 
-    define(Promise.prototype, 'then', function then(onFulfilled, onRejected) {
-      var promise = this;
-      if (!IsPromise(promise)) throw TypeError();
-      if (!IsCallable(onFulfilled)) onFulfilled = 'Identity';
-      if (!IsCallable(onRejected)) onRejected = 'Thrower';
-      var c = promise.constructor;
-      var promiseCapability = NewPromiseCapability(c);
-      var fulfillReaction = { '[[Capabilities]]': promiseCapability,
-                              '[[Handler]]': onFulfilled };
-      var rejectReaction = { '[[Capabilities]]': promiseCapability,
-                             '[[Handler]]': onRejected };
-      if (promise['[[PromiseState]]'] === 'pending') {
-        promise['[[PromiseFulfillReactions]]'].push(fulfillReaction);
-        promise['[[PromiseRejectReactions]]'].push(rejectReaction);
-      } else if (promise['[[PromiseState]]'] === 'fulfilled') {
-        var value = promise['[[PromiseResult]]'];
-        EnqueueJob('PromiseJobs', PromiseReactionJob, [fulfillReaction, value]);
-      } else if (promise['[[PromiseState]]'] === 'rejected') {
-        var reason = promise['[[PromiseResult]]'];
-        EnqueueJob('PromiseJobs', PromiseReactionJob, [rejectReaction, reason]);
-      }
-      return promiseCapability['[[Promise]]'];
-    });
+  return ret;
+}
 
-    // 25.4.6 Properties of Promise Instances
+function doWrite(stream, state, writev, len, chunk, encoding, cb) {
+  state.writelen = len;
+  state.writecb = cb;
+  state.writing = true;
+  state.sync = true;
+  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
+  state.sync = false;
+}
 
-    if (!('Promise' in global) || OVERRIDE_NATIVE_FOR_TESTING)
-      global.Promise = Promise;
+function onwriteError(stream, state, sync, er, cb) {
+  --state.pendingcb;
+  if (sync) processNextTick(cb, er);else cb(er);
 
-    // Patch early Promise.cast vs. Promise.resolve implementations
-    if ('cast' in global.Promise) global.Promise.resolve = global.Promise.cast;
-  }());
+  stream._writableState.errorEmitted = true;
+  stream.emit('error', er);
+}
 
-  // 25.4.5.1 Promise.prototype [ @@toStringTag ]
-  define(Promise.prototype, $$toStringTag, 'Promise');
+function onwriteStateUpdate(state) {
+  state.writing = false;
+  state.writecb = null;
+  state.length -= state.writelen;
+  state.writelen = 0;
+}
 
-  // ---------------------------------------
-  // 26 Reflection
-  // ---------------------------------------
+function onwrite(stream, er) {
+  var state = stream._writableState;
+  var sync = state.sync;
+  var cb = state.writecb;
 
-  (function() {
-    // 26.1 The Reflect Object
-    if (!('Reflect' in global) || OVERRIDE_NATIVE_FOR_TESTING)
-      global.Reflect = {};
+  onwriteStateUpdate(state);
 
-    // 26.1.1 Reflect.apply ( target, thisArgument, argumentsList )
-    define(
-      Reflect, 'apply',
-      function apply(target, thisArgument, argumentsList) {
-        if (!IsCallable(target)) throw TypeError();
-        return Function.prototype.apply.call(target, thisArgument, argumentsList);
-      });
+  if (er) onwriteError(stream, state, sync, er, cb);else {
+    // Check if we're actually ready to finish, but don't emit yet
+    var finished = needFinish(state);
 
-    // 26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
-    define(
-      Reflect, 'construct',
-      function construct(target, argumentsList) {
-        return __cons(target, argumentsList);
-      });
+    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
+      clearBuffer(stream, state);
+    }
 
-    // 26.1.3 Reflect.defineProperty ( target, propertyKey, attributes )
-    define(
-      Reflect, 'defineProperty',
-      function defineProperty(target, propertyKey, attributes) {
-        try {
-          Object.defineProperty(target, propertyKey, attributes);
-          return true;
-        } catch (_) {
-          return false;
-        }
-      });
+    if (sync) {
+      /*<replacement>*/
+      asyncWrite(afterWrite, stream, state, finished, cb);
+      /*</replacement>*/
+    } else {
+      afterWrite(stream, state, finished, cb);
+    }
+  }
+}
 
-    // 26.1.4 Reflect.deleteProperty ( target, propertyKey )
-    define(
-      Reflect, 'deleteProperty',
-      function deleteProperty(target,name) {
-        try {
-          delete target[name];
-          return !HasOwnProperty(target, name);
-        } catch (_) {
-          return false;
-        }
-      });
+function afterWrite(stream, state, finished, cb) {
+  if (!finished) onwriteDrain(stream, state);
+  state.pendingcb--;
+  cb();
+  finishMaybe(stream, state);
+}
 
-    // 26.1.5 Reflect.enumerate ( target )
-    define(
-      Reflect, 'enumerate',
-      function enumerate(target) {
-        target = ToObject(target);
-        var iterator = Enumerate(target);
-        return iterator;
-      });
+// Must force callback to be called on nextTick, so that we don't
+// emit 'drain' before the write() consumer gets the 'false' return
+// value, and has a chance to attach a 'drain' listener.
+function onwriteDrain(stream, state) {
+  if (state.length === 0 && state.needDrain) {
+    state.needDrain = false;
+    stream.emit('drain');
+  }
+}
 
-    // 26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
-    define(
-      Reflect, 'get',
-      function get(target, name, receiver) {
-        target = ToObject(target);
-        name = String(name);
-        receiver = (receiver === undefined) ? target : ToObject(receiver);
-        var desc = getPropertyDescriptor(target, name);
-        if (desc && 'get' in desc)
-          return Function.prototype.call.call(desc['get'], receiver);
-        return target[name];
-      });
+// if there's something in the buffer waiting, then process it
+function clearBuffer(stream, state) {
+  state.bufferProcessing = true;
+  var entry = state.bufferedRequest;
 
-    // 26.1.7 Reflect.getOwnPropertyDescriptor ( target, propertyKey )
-    define(
-      Reflect, 'getOwnPropertyDescriptor',
-      Object.getOwnPropertyDescriptor);
+  if (stream._writev && entry && entry.next) {
+    // Fast case, write everything using _writev()
+    var l = state.bufferedRequestCount;
+    var buffer = new Array(l);
+    var holder = state.corkedRequestsFree;
+    holder.entry = entry;
 
-    // 26.1.8 Reflect.getPrototypeOf ( target )
-    define(
-      Reflect, 'getPrototypeOf',
-      Object.getPrototypeOf);
+    var count = 0;
+    while (entry) {
+      buffer[count] = entry;
+      entry = entry.next;
+      count += 1;
+    }
 
-    // 26.1.9 Reflect.has ( target, propertyKey )
-    define(
-      Reflect, 'has',
-      function has(target,name) {
-        return String(name) in ToObject(target);
-      });
+    doWrite(stream, state, true, state.length, buffer, '', holder.finish);
 
-    // 26.1.10 Reflect.isExtensible (target)
-    define(
-      Reflect, 'isExtensible',
-      Object.isExtensible);
+    // doWrite is almost always async, defer these to save a bit of time
+    // as the hot path ends with doWrite
+    state.pendingcb++;
+    state.lastBufferedRequest = null;
+    if (holder.next) {
+      state.corkedRequestsFree = holder.next;
+      holder.next = null;
+    } else {
+      state.corkedRequestsFree = new CorkedRequest(state);
+    }
+  } else {
+    // Slow case, write chunks one-by-one
+    while (entry) {
+      var chunk = entry.chunk;
+      var encoding = entry.encoding;
+      var cb = entry.callback;
+      var len = state.objectMode ? 1 : chunk.length;
 
-    // 26.1.11 Reflect.ownKeys ( target )
-    define(
-      Reflect, 'ownKeys',
-      function ownKeys(target) {
-        var obj = ToObject(target);
-        return Object.getOwnPropertyNames(obj);
-      });
+      doWrite(stream, state, false, len, chunk, encoding, cb);
+      entry = entry.next;
+      // if we didn't call the onwrite immediately, then
+      // it means that we need to wait until it does.
+      // also, that means that the chunk and cb are currently
+      // being processed, so move the buffer counter past them.
+      if (state.writing) {
+        break;
+      }
+    }
 
-    // 26.1.12 Reflect.preventExtensions ( target )
-    define(
-      Reflect, 'preventExtensions',
-      function preventExtensions(target) {
-        try { Object.preventExtensions(target); return true; } catch (_) { return false; }
-      });
+    if (entry === null) state.lastBufferedRequest = null;
+  }
 
-    // 26.1.13 Reflect.set ( target, propertyKey, V [ , receiver ] )
-    define(
-      Reflect, 'set',
-      function set(target, name, value, receiver) {
-        target = ToObject(target);
-        name = String(name);
-        receiver = (receiver === undefined) ? target : ToObject(receiver);
-        var desc = getPropertyDescriptor(target, name);
-        try {
-          if (desc && 'set' in desc)
-            Function.prototype.call.call(desc['set'], receiver, value);
-          else
-            target[name] = value;
-          return true;
-        } catch (_) {
-          return false;
-        }
-      });
+  state.bufferedRequestCount = 0;
+  state.bufferedRequest = entry;
+  state.bufferProcessing = false;
+}
 
-    // 26.1.14 Reflect.setPrototypeOf ( target, proto )
-    define(
-      Reflect, 'setPrototypeOf',
-      function setPrototypeOf(target, proto) {
-        try {
-          target.__proto__ = proto;
-          return Reflect.getPrototypeOf(target) === proto;
-        } catch(_) {
-          return false;
-        }
-      });
+Writable.prototype._write = function (chunk, encoding, cb) {
+  cb(new Error('_write() is not implemented'));
+};
 
-  }());
+Writable.prototype._writev = null;
 
-  // ---------------------------------------
-  // 26.2 Proxy Objects
-  // ---------------------------------------
+Writable.prototype.end = function (chunk, encoding, cb) {
+  var state = this._writableState;
 
-  // Not polyfillable.
+  if (typeof chunk === 'function') {
+    cb = chunk;
+    chunk = null;
+    encoding = null;
+  } else if (typeof encoding === 'function') {
+    cb = encoding;
+    encoding = null;
+  }
 
-}(self));
+  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
 
-// This helper is defined outside the main scope so that the use of
-// 'eval' does not taint the scope for minifiers.
-function __cons(t, a) {
-  return eval('new t(' + a.map(function(_, i) { return 'a[' + i + ']'; }).join(',') + ')');
-}
-</script>
-        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.foo = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-'use strict'
+  // .end() fully uncorks
+  if (state.corked) {
+    state.corked = 1;
+    this.uncork();
+  }
 
-exports.byteLength = byteLength
-exports.toByteArray = toByteArray
-exports.fromByteArray = fromByteArray
+  // ignore unnecessary end() calls.
+  if (!state.ending && !state.finished) endWritable(this, state, cb);
+};
 
-var lookup = []
-var revLookup = []
-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+function needFinish(state) {
+  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
+}
 
-var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
-for (var i = 0, len = code.length; i < len; ++i) {
-  lookup[i] = code[i]
-  revLookup[code.charCodeAt(i)] = i
+function prefinish(stream, state) {
+  if (!state.prefinished) {
+    state.prefinished = true;
+    stream.emit('prefinish');
+  }
 }
 
-revLookup['-'.charCodeAt(0)] = 62
-revLookup['_'.charCodeAt(0)] = 63
+function finishMaybe(stream, state) {
+  var need = needFinish(state);
+  if (need) {
+    if (state.pendingcb === 0) {
+      prefinish(stream, state);
+      state.finished = true;
+      stream.emit('finish');
+    } else {
+      prefinish(stream, state);
+    }
+  }
+  return need;
+}
 
-function placeHoldersCount (b64) {
-  var len = b64.length
-  if (len % 4 > 0) {
-    throw new Error('Invalid string. Length must be a multiple of 4')
+function endWritable(stream, state, cb) {
+  state.ending = true;
+  finishMaybe(stream, state);
+  if (cb) {
+    if (state.finished) processNextTick(cb);else stream.once('finish', cb);
   }
+  state.ended = true;
+  stream.writable = false;
+}
 
-  // the number of equal signs (place holders)
-  // if there are two placeholders, than the two characters before it
-  // represent one byte
-  // if there is only one, then the three characters before it represent 2 bytes
-  // this is just a cheap hack to not do indexOf twice
-  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+// It seems a linked list but it is not
+// there will be only 2 of these for each stream
+function CorkedRequest(state) {
+  var _this = this;
+
+  this.next = null;
+  this.entry = null;
+  this.finish = function (err) {
+    var entry = _this.entry;
+    _this.entry = null;
+    while (entry) {
+      var cb = entry.callback;
+      state.pendingcb--;
+      cb(err);
+      entry = entry.next;
+    }
+    if (state.corkedRequestsFree) {
+      state.corkedRequestsFree.next = _this;
+    } else {
+      state.corkedRequestsFree = _this;
+    }
+  };
 }
+}).call(this,require('_process'))
+},{"./_stream_duplex":15,"./internal/streams/stream":21,"_process":13,"buffer":5,"buffer-shims":4,"core-util-is":6,"inherits":9,"process-nextick-args":12,"util-deprecate":30}],20:[function(require,module,exports){
+'use strict';
 
-function byteLength (b64) {
-  // base64 is 4/3 + up to two characters of the original data
-  return b64.length * 3 / 4 - placeHoldersCount(b64)
+var Buffer = require('buffer').Buffer;
+/*<replacement>*/
+var bufferShim = require('buffer-shims');
+/*</replacement>*/
+
+module.exports = BufferList;
+
+function BufferList() {
+  this.head = null;
+  this.tail = null;
+  this.length = 0;
 }
 
-function toByteArray (b64) {
-  var i, j, l, tmp, placeHolders, arr
-  var len = b64.length
-  placeHolders = placeHoldersCount(b64)
+BufferList.prototype.push = function (v) {
+  var entry = { data: v, next: null };
+  if (this.length > 0) this.tail.next = entry;else this.head = entry;
+  this.tail = entry;
+  ++this.length;
+};
 
-  arr = new Arr(len * 3 / 4 - placeHolders)
+BufferList.prototype.unshift = function (v) {
+  var entry = { data: v, next: this.head };
+  if (this.length === 0) this.tail = entry;
+  this.head = entry;
+  ++this.length;
+};
 
-  // if there are placeholders, only get up to the last complete 4 chars
-  l = placeHolders > 0 ? len - 4 : len
+BufferList.prototype.shift = function () {
+  if (this.length === 0) return;
+  var ret = this.head.data;
+  if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
+  --this.length;
+  return ret;
+};
 
-  var L = 0
+BufferList.prototype.clear = function () {
+  this.head = this.tail = null;
+  this.length = 0;
+};
 
-  for (i = 0, j = 0; i < l; i += 4, j += 3) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
-    arr[L++] = (tmp >> 16) & 0xFF
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
+BufferList.prototype.join = function (s) {
+  if (this.length === 0) return '';
+  var p = this.head;
+  var ret = '' + p.data;
+  while (p = p.next) {
+    ret += s + p.data;
+  }return ret;
+};
+
+BufferList.prototype.concat = function (n) {
+  if (this.length === 0) return bufferShim.alloc(0);
+  if (this.length === 1) return this.head.data;
+  var ret = bufferShim.allocUnsafe(n >>> 0);
+  var p = this.head;
+  var i = 0;
+  while (p) {
+    p.data.copy(ret, i);
+    i += p.data.length;
+    p = p.next;
   }
+  return ret;
+};
+},{"buffer":5,"buffer-shims":4}],21:[function(require,module,exports){
+module.exports = require('events').EventEmitter;
 
-  if (placeHolders === 2) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
-    arr[L++] = tmp & 0xFF
-  } else if (placeHolders === 1) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
+},{"events":7}],22:[function(require,module,exports){
+'use strict';
+
+var Buffer = require('safe-buffer').Buffer;
+
+var isEncoding = Buffer.isEncoding || function (encoding) {
+  encoding = '' + encoding;
+  switch (encoding && encoding.toLowerCase()) {
+    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
+      return true;
+    default:
+      return false;
   }
+};
 
-  return arr
-}
+function _normalizeEncoding(enc) {
+  if (!enc) return 'utf8';
+  var retried;
+  while (true) {
+    switch (enc) {
+      case 'utf8':
+      case 'utf-8':
+        return 'utf8';
+      case 'ucs2':
+      case 'ucs-2':
+      case 'utf16le':
+      case 'utf-16le':
+        return 'utf16le';
+      case 'latin1':
+      case 'binary':
+        return 'latin1';
+      case 'base64':
+      case 'ascii':
+      case 'hex':
+        return enc;
+      default:
+        if (retried) return; // undefined
+        enc = ('' + enc).toLowerCase();
+        retried = true;
+    }
+  }
+};
 
-function tripletToBase64 (num) {
-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+// Do not cache `Buffer.isEncoding` when checking encoding names as some
+// modules monkey-patch it to support additional encodings
+function normalizeEncoding(enc) {
+  var nenc = _normalizeEncoding(enc);
+  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
+  return nenc || enc;
 }
 
-function encodeChunk (uint8, start, end) {
-  var tmp
-  var output = []
-  for (var i = start; i < end; i += 3) {
-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
-    output.push(tripletToBase64(tmp))
+// StringDecoder provides an interface for efficiently splitting a series of
+// buffers into a series of JS strings without breaking apart multi-byte
+// characters.
+exports.StringDecoder = StringDecoder;
+function StringDecoder(encoding) {
+  this.encoding = normalizeEncoding(encoding);
+  var nb;
+  switch (this.encoding) {
+    case 'utf16le':
+      this.text = utf16Text;
+      this.end = utf16End;
+      nb = 4;
+      break;
+    case 'utf8':
+      this.fillLast = utf8FillLast;
+      nb = 4;
+      break;
+    case 'base64':
+      this.text = base64Text;
+      this.end = base64End;
+      nb = 3;
+      break;
+    default:
+      this.write = simpleWrite;
+      this.end = simpleEnd;
+      return;
   }
-  return output.join('')
+  this.lastNeed = 0;
+  this.lastTotal = 0;
+  this.lastChar = Buffer.allocUnsafe(nb);
 }
 
-function fromByteArray (uint8) {
-  var tmp
-  var len = uint8.length
-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
-  var output = ''
-  var parts = []
-  var maxChunkLength = 16383 // must be multiple of 3
-
-  // go through the array every three bytes, we'll deal with trailing stuff later
-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
+StringDecoder.prototype.write = function (buf) {
+  if (buf.length === 0) return '';
+  var r;
+  var i;
+  if (this.lastNeed) {
+    r = this.fillLast(buf);
+    if (r === undefined) return '';
+    i = this.lastNeed;
+    this.lastNeed = 0;
+  } else {
+    i = 0;
   }
+  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
+  return r || '';
+};
 
-  // pad the end with zeros, but make sure to not forget the extra bytes
-  if (extraBytes === 1) {
-    tmp = uint8[len - 1]
-    output += lookup[tmp >> 2]
-    output += lookup[(tmp << 4) & 0x3F]
-    output += '=='
-  } else if (extraBytes === 2) {
-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
-    output += lookup[tmp >> 10]
-    output += lookup[(tmp >> 4) & 0x3F]
-    output += lookup[(tmp << 2) & 0x3F]
-    output += '='
-  }
+StringDecoder.prototype.end = utf8End;
 
-  parts.push(output)
+// Returns only complete characters in a Buffer
+StringDecoder.prototype.text = utf8Text;
 
-  return parts.join('')
-}
+// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
+StringDecoder.prototype.fillLast = function (buf) {
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
+  this.lastNeed -= buf.length;
+};
 
-},{}],2:[function(require,module,exports){
-/*!
- * The buffer module from node.js, for the browser.
- *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
- * @license  MIT
- */
-/* eslint-disable no-proto */
+// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
+// continuation byte.
+function utf8CheckByte(byte) {
+  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
+  return -1;
+}
 
-'use strict'
+// Checks at most 3 bytes at the end of a Buffer in order to detect an
+// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
+// needed to complete the UTF-8 character (if applicable) are returned.
+function utf8CheckIncomplete(self, buf, i) {
+  var j = buf.length - 1;
+  if (j < i) return 0;
+  var nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 1;
+    return nb;
+  }
+  if (--j < i) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) self.lastNeed = nb - 2;
+    return nb;
+  }
+  if (--j < i) return 0;
+  nb = utf8CheckByte(buf[j]);
+  if (nb >= 0) {
+    if (nb > 0) {
+      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
+    }
+    return nb;
+  }
+  return 0;
+}
 
-var base64 = require('base64-js')
-var ieee754 = require('ieee754')
+// Validates as many continuation bytes for a multi-byte UTF-8 character as
+// needed or are available. If we see a non-continuation byte where we expect
+// one, we "replace" the validated continuation bytes we've seen so far with
+// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
+// behavior. The continuation byte check is included three times in the case
+// where all of the continuation bytes for a character exist in the same buffer.
+// It is also done this way as a slight performance increase instead of using a
+// loop.
+function utf8CheckExtraBytes(self, buf, p) {
+  if ((buf[0] & 0xC0) !== 0x80) {
+    self.lastNeed = 0;
+    return '\ufffd'.repeat(p);
+  }
+  if (self.lastNeed > 1 && buf.length > 1) {
+    if ((buf[1] & 0xC0) !== 0x80) {
+      self.lastNeed = 1;
+      return '\ufffd'.repeat(p + 1);
+    }
+    if (self.lastNeed > 2 && buf.length > 2) {
+      if ((buf[2] & 0xC0) !== 0x80) {
+        self.lastNeed = 2;
+        return '\ufffd'.repeat(p + 2);
+      }
+    }
+  }
+}
 
-exports.Buffer = Buffer
-exports.SlowBuffer = SlowBuffer
-exports.INSPECT_MAX_BYTES = 50
+// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
+function utf8FillLast(buf) {
+  var p = this.lastTotal - this.lastNeed;
+  var r = utf8CheckExtraBytes(this, buf, p);
+  if (r !== undefined) return r;
+  if (this.lastNeed <= buf.length) {
+    buf.copy(this.lastChar, p, 0, this.lastNeed);
+    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+  }
+  buf.copy(this.lastChar, p, 0, buf.length);
+  this.lastNeed -= buf.length;
+}
 
-var K_MAX_LENGTH = 0x7fffffff
-exports.kMaxLength = K_MAX_LENGTH
+// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
+// partial character, the character's bytes are buffered until the required
+// number of bytes are available.
+function utf8Text(buf, i) {
+  var total = utf8CheckIncomplete(this, buf, i);
+  if (!this.lastNeed) return buf.toString('utf8', i);
+  this.lastTotal = total;
+  var end = buf.length - (total - this.lastNeed);
+  buf.copy(this.lastChar, 0, end);
+  return buf.toString('utf8', i, end);
+}
 
-/**
- * If `Buffer.TYPED_ARRAY_SUPPORT`:
- *   === true    Use Uint8Array implementation (fastest)
- *   === false   Print warning and recommend using `buffer` v4.x which has an Object
- *               implementation (most compatible, even IE6)
- *
- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
- * Opera 11.6+, iOS 4.2+.
- *
- * We report that the browser does not support typed arrays if the are not subclassable
- * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
- * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
- * for __proto__ and has a buggy typed array implementation.
- */
-Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+// For UTF-8, a replacement character for each buffered byte of a (partial)
+// character needs to be added to the output.
+function utf8End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
+  return r;
+}
 
-if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
-    typeof console.error === 'function') {
-  console.error(
-    'This browser lacks typed array (Uint8Array) support which is required by ' +
-    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
-  )
+// UTF-16LE typically needs two bytes per character, but even if we have an even
+// number of bytes available, we need to check if we end on a leading/high
+// surrogate. In that case, we need to wait for the next two bytes in order to
+// decode the last character properly.
+function utf16Text(buf, i) {
+  if ((buf.length - i) % 2 === 0) {
+    var r = buf.toString('utf16le', i);
+    if (r) {
+      var c = r.charCodeAt(r.length - 1);
+      if (c >= 0xD800 && c <= 0xDBFF) {
+        this.lastNeed = 2;
+        this.lastTotal = 4;
+        this.lastChar[0] = buf[buf.length - 2];
+        this.lastChar[1] = buf[buf.length - 1];
+        return r.slice(0, -1);
+      }
+    }
+    return r;
+  }
+  this.lastNeed = 1;
+  this.lastTotal = 2;
+  this.lastChar[0] = buf[buf.length - 1];
+  return buf.toString('utf16le', i, buf.length - 1);
 }
 
-function typedArraySupport () {
-  // Can typed array instances can be augmented?
-  try {
-    var arr = new Uint8Array(1)
-    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
-    return arr.foo() === 42
-  } catch (e) {
-    return false
+// For UTF-16LE we do not explicitly append special replacement characters if we
+// end on a partial character, we simply let v8 handle that.
+function utf16End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) {
+    var end = this.lastTotal - this.lastNeed;
+    return r + this.lastChar.toString('utf16le', 0, end);
   }
+  return r;
 }
 
-function createBuffer (length) {
-  if (length > K_MAX_LENGTH) {
-    throw new RangeError('Invalid typed array length')
+function base64Text(buf, i) {
+  var n = (buf.length - i) % 3;
+  if (n === 0) return buf.toString('base64', i);
+  this.lastNeed = 3 - n;
+  this.lastTotal = 3;
+  if (n === 1) {
+    this.lastChar[0] = buf[buf.length - 1];
+  } else {
+    this.lastChar[0] = buf[buf.length - 2];
+    this.lastChar[1] = buf[buf.length - 1];
   }
-  // Return an augmented `Uint8Array` instance
-  var buf = new Uint8Array(length)
-  buf.__proto__ = Buffer.prototype
-  return buf
+  return buf.toString('base64', i, buf.length - n);
 }
 
-/**
- * The Buffer constructor returns instances of `Uint8Array` that have their
- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
- * returns a single octet.
- *
- * The `Uint8Array` prototype remains unmodified.
- */
+function base64End(buf) {
+  var r = buf && buf.length ? this.write(buf) : '';
+  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
+  return r;
+}
 
-function Buffer (arg, encodingOrOffset, length) {
-  // Common case.
-  if (typeof arg === 'number') {
-    if (typeof encodingOrOffset === 'string') {
-      throw new Error(
-        'If encoding is specified then the first argument must be a string'
-      )
-    }
-    return allocUnsafe(arg)
-  }
-  return from(arg, encodingOrOffset, length)
+// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
+function simpleWrite(buf) {
+  return buf.toString(this.encoding);
 }
 
-// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
-if (typeof Symbol !== 'undefined' && Symbol.species &&
-    Buffer[Symbol.species] === Buffer) {
-  Object.defineProperty(Buffer, Symbol.species, {
-    value: null,
-    configurable: true,
-    enumerable: false,
-    writable: false
-  })
+function simpleEnd(buf) {
+  return buf && buf.length ? this.write(buf) : '';
 }
+},{"safe-buffer":27}],23:[function(require,module,exports){
+module.exports = require('./readable').PassThrough
 
-Buffer.poolSize = 8192 // not used by this implementation
+},{"./readable":24}],24:[function(require,module,exports){
+exports = module.exports = require('./lib/_stream_readable.js');
+exports.Stream = exports;
+exports.Readable = exports;
+exports.Writable = require('./lib/_stream_writable.js');
+exports.Duplex = require('./lib/_stream_duplex.js');
+exports.Transform = require('./lib/_stream_transform.js');
+exports.PassThrough = require('./lib/_stream_passthrough.js');
 
-function from (value, encodingOrOffset, length) {
-  if (typeof value === 'number') {
-    throw new TypeError('"value" argument must not be a number')
-  }
+},{"./lib/_stream_duplex.js":15,"./lib/_stream_passthrough.js":16,"./lib/_stream_readable.js":17,"./lib/_stream_transform.js":18,"./lib/_stream_writable.js":19}],25:[function(require,module,exports){
+module.exports = require('./readable').Transform
 
-  if (value instanceof ArrayBuffer) {
-    return fromArrayBuffer(value, encodingOrOffset, length)
-  }
+},{"./readable":24}],26:[function(require,module,exports){
+module.exports = require('./lib/_stream_writable.js');
 
-  if (typeof value === 'string') {
-    return fromString(value, encodingOrOffset)
-  }
+},{"./lib/_stream_writable.js":19}],27:[function(require,module,exports){
+module.exports = require('buffer')
 
-  return fromObject(value)
-}
+},{"buffer":5}],28:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-/**
- * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
- * if value is a number.
- * Buffer.from(str[, encoding])
- * Buffer.from(array)
- * Buffer.from(buffer)
- * Buffer.from(arrayBuffer[, byteOffset[, length]])
- **/
-Buffer.from = function (value, encodingOrOffset, length) {
-  return from(value, encodingOrOffset, length)
-}
+module.exports = Stream;
 
-// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
-// https://github.com/feross/buffer/pull/148
-Buffer.prototype.__proto__ = Uint8Array.prototype
-Buffer.__proto__ = Uint8Array
+var EE = require('events').EventEmitter;
+var inherits = require('inherits');
 
-function assertSize (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('"size" argument must be a number')
-  } else if (size < 0) {
-    throw new RangeError('"size" argument must not be negative')
-  }
-}
+inherits(Stream, EE);
+Stream.Readable = require('readable-stream/readable.js');
+Stream.Writable = require('readable-stream/writable.js');
+Stream.Duplex = require('readable-stream/duplex.js');
+Stream.Transform = require('readable-stream/transform.js');
+Stream.PassThrough = require('readable-stream/passthrough.js');
 
-function alloc (size, fill, encoding) {
-  assertSize(size)
-  if (size <= 0) {
-    return createBuffer(size)
-  }
-  if (fill !== undefined) {
-    // Only pay attention to encoding if it's a string. This
-    // prevents accidentally sending in a number that would
-    // be interpretted as a start offset.
-    return typeof encoding === 'string'
-      ? createBuffer(size).fill(fill, encoding)
-      : createBuffer(size).fill(fill)
-  }
-  return createBuffer(size)
-}
+// Backwards-compat with node 0.4.x
+Stream.Stream = Stream;
 
-/**
- * Creates a new filled Buffer instance.
- * alloc(size[, fill[, encoding]])
- **/
-Buffer.alloc = function (size, fill, encoding) {
-  return alloc(size, fill, encoding)
-}
 
-function allocUnsafe (size) {
-  assertSize(size)
-  return createBuffer(size < 0 ? 0 : checked(size) | 0)
-}
 
-/**
- * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
- * */
-Buffer.allocUnsafe = function (size) {
-  return allocUnsafe(size)
-}
-/**
- * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
- */
-Buffer.allocUnsafeSlow = function (size) {
-  return allocUnsafe(size)
+// old-style streams.  Note that the pipe method (the only relevant
+// part of this class) is overridden in the Readable class.
+
+function Stream() {
+  EE.call(this);
 }
 
-function fromString (string, encoding) {
-  if (typeof encoding !== 'string' || encoding === '') {
-    encoding = 'utf8'
-  }
+Stream.prototype.pipe = function(dest, options) {
+  var source = this;
 
-  if (!Buffer.isEncoding(encoding)) {
-    throw new TypeError('"encoding" must be a valid string encoding')
+  function ondata(chunk) {
+    if (dest.writable) {
+      if (false === dest.write(chunk) && source.pause) {
+        source.pause();
+      }
+    }
   }
 
-  var length = byteLength(string, encoding) | 0
-  var buf = createBuffer(length)
-
-  var actual = buf.write(string, encoding)
+  source.on('data', ondata);
 
-  if (actual !== length) {
-    // Writing a hex string, for example, that contains invalid characters will
-    // cause everything after the first invalid character to be ignored. (e.g.
-    // 'abxxcd' will be treated as 'ab')
-    buf = buf.slice(0, actual)
+  function ondrain() {
+    if (source.readable && source.resume) {
+      source.resume();
+    }
   }
 
-  return buf
-}
+  dest.on('drain', ondrain);
 
-function fromArrayLike (array) {
-  var length = array.length < 0 ? 0 : checked(array.length) | 0
-  var buf = createBuffer(length)
-  for (var i = 0; i < length; i += 1) {
-    buf[i] = array[i] & 255
+  // If the 'end' option is not supplied, dest.end() will be called when
+  // source gets the 'end' or 'close' events.  Only dest.end() once.
+  if (!dest._isStdio && (!options || options.end !== false)) {
+    source.on('end', onend);
+    source.on('close', onclose);
   }
-  return buf
-}
 
-function fromArrayBuffer (array, byteOffset, length) {
-  if (byteOffset < 0 || array.byteLength < byteOffset) {
-    throw new RangeError('\'offset\' is out of bounds')
+  var didOnEnd = false;
+  function onend() {
+    if (didOnEnd) return;
+    didOnEnd = true;
+
+    dest.end();
   }
 
-  if (array.byteLength < byteOffset + (length || 0)) {
-    throw new RangeError('\'length\' is out of bounds')
+
+  function onclose() {
+    if (didOnEnd) return;
+    didOnEnd = true;
+
+    if (typeof dest.destroy === 'function') dest.destroy();
   }
 
-  var buf
-  if (byteOffset === undefined && length === undefined) {
-    buf = new Uint8Array(array)
-  } else if (length === undefined) {
-    buf = new Uint8Array(array, byteOffset)
-  } else {
-    buf = new Uint8Array(array, byteOffset, length)
+  // don't leave dangling pipes when there are errors.
+  function onerror(er) {
+    cleanup();
+    if (EE.listenerCount(this, 'error') === 0) {
+      throw er; // Unhandled stream error in pipe.
+    }
   }
 
-  // Return an augmented `Uint8Array` instance
-  buf.__proto__ = Buffer.prototype
-  return buf
-}
+  source.on('error', onerror);
+  dest.on('error', onerror);
 
-function fromObject (obj) {
-  if (Buffer.isBuffer(obj)) {
-    var len = checked(obj.length) | 0
-    var buf = createBuffer(len)
+  // remove all the event listeners that were added.
+  function cleanup() {
+    source.removeListener('data', ondata);
+    dest.removeListener('drain', ondrain);
 
-    if (buf.length === 0) {
-      return buf
-    }
+    source.removeListener('end', onend);
+    source.removeListener('close', onclose);
 
-    obj.copy(buf, 0, 0, len)
-    return buf
-  }
+    source.removeListener('error', onerror);
+    dest.removeListener('error', onerror);
 
-  if (obj) {
-    if (isArrayBufferView(obj) || 'length' in obj) {
-      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
-        return createBuffer(0)
-      }
-      return fromArrayLike(obj)
-    }
+    source.removeListener('end', cleanup);
+    source.removeListener('close', cleanup);
 
-    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
-      return fromArrayLike(obj.data)
-    }
+    dest.removeListener('close', cleanup);
   }
 
-  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
-}
+  source.on('end', cleanup);
+  source.on('close', cleanup);
 
-function checked (length) {
-  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
-  // length is NaN (which is otherwise coerced to zero.)
-  if (length >= K_MAX_LENGTH) {
-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
-                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
-  }
-  return length | 0
-}
+  dest.on('close', cleanup);
 
-function SlowBuffer (length) {
-  if (+length != length) { // eslint-disable-line eqeqeq
-    length = 0
-  }
-  return Buffer.alloc(+length)
-}
+  dest.emit('pipe', source);
 
-Buffer.isBuffer = function isBuffer (b) {
-  return b != null && b._isBuffer === true
-}
+  // Allow for unix-like usage: A.pipe(B).pipe(C)
+  return dest;
+};
 
-Buffer.compare = function compare (a, b) {
-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
-    throw new TypeError('Arguments must be Buffers')
-  }
+},{"events":7,"inherits":9,"readable-stream/duplex.js":14,"readable-stream/passthrough.js":23,"readable-stream/readable.js":24,"readable-stream/transform.js":25,"readable-stream/writable.js":26}],29:[function(require,module,exports){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  if (a === b) return 0
+var Buffer = require('buffer').Buffer;
 
-  var x = a.length
-  var y = b.length
+var isBufferEncoding = Buffer.isEncoding
+  || function(encoding) {
+       switch (encoding && encoding.toLowerCase()) {
+         case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
+         default: return false;
+       }
+     }
 
-  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
-    if (a[i] !== b[i]) {
-      x = a[i]
-      y = b[i]
-      break
-    }
-  }
 
-  if (x < y) return -1
-  if (y < x) return 1
-  return 0
+function assertEncoding(encoding) {
+  if (encoding && !isBufferEncoding(encoding)) {
+    throw new Error('Unknown encoding: ' + encoding);
+  }
 }
 
-Buffer.isEncoding = function isEncoding (encoding) {
-  switch (String(encoding).toLowerCase()) {
-    case 'hex':
+// StringDecoder provides an interface for efficiently splitting a series of
+// buffers into a series of JS strings without breaking apart multi-byte
+// characters. CESU-8 is handled as part of the UTF-8 encoding.
+//
+// @TODO Handling all encodings inside a single object makes it very difficult
+// to reason about this code, so it should be split up in the future.
+// @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
+// points as used by CESU-8.
+var StringDecoder = exports.StringDecoder = function(encoding) {
+  this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
+  assertEncoding(encoding);
+  switch (this.encoding) {
     case 'utf8':
-    case 'utf-8':
-    case 'ascii':
-    case 'latin1':
-    case 'binary':
-    case 'base64':
+      // CESU-8 represents each of Surrogate Pair by 3-bytes
+      this.surrogateSize = 3;
+      break;
     case 'ucs2':
-    case 'ucs-2':
     case 'utf16le':
-    case 'utf-16le':
-      return true
+      // UTF-16 represents each of Surrogate Pair by 2-bytes
+      this.surrogateSize = 2;
+      this.detectIncompleteChar = utf16DetectIncompleteChar;
+      break;
+    case 'base64':
+      // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
+      this.surrogateSize = 3;
+      this.detectIncompleteChar = base64DetectIncompleteChar;
+      break;
     default:
-      return false
-  }
-}
-
-Buffer.concat = function concat (list, length) {
-  if (!Array.isArray(list)) {
-    throw new TypeError('"list" argument must be an Array of Buffers')
-  }
-
-  if (list.length === 0) {
-    return Buffer.alloc(0)
+      this.write = passThroughWrite;
+      return;
   }
 
-  var i
-  if (length === undefined) {
-    length = 0
-    for (i = 0; i < list.length; ++i) {
-      length += list[i].length
-    }
-  }
+  // Enough space to store all bytes of a single character. UTF-8 needs 4
+  // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
+  this.charBuffer = new Buffer(6);
+  // Number of bytes received for the current incomplete multi-byte character.
+  this.charReceived = 0;
+  // Number of bytes expected for the current incomplete multi-byte character.
+  this.charLength = 0;
+};
 
-  var buffer = Buffer.allocUnsafe(length)
-  var pos = 0
-  for (i = 0; i < list.length; ++i) {
-    var buf = list[i]
-    if (!Buffer.isBuffer(buf)) {
-      throw new TypeError('"list" argument must be an Array of Buffers')
-    }
-    buf.copy(buffer, pos)
-    pos += buf.length
-  }
-  return buffer
-}
 
-function byteLength (string, encoding) {
-  if (Buffer.isBuffer(string)) {
-    return string.length
-  }
-  if (isArrayBufferView(string) || string instanceof ArrayBuffer) {
-    return string.byteLength
-  }
-  if (typeof string !== 'string') {
-    string = '' + string
-  }
+// write decodes the given buffer and returns it as JS string that is
+// guaranteed to not contain any partial multi-byte characters. Any partial
+// character found at the end of the buffer is buffered up, and will be
+// returned when calling write again with the remaining bytes.
+//
+// Note: Converting a Buffer containing an orphan surrogate to a String
+// currently works, but converting a String to a Buffer (via `new Buffer`, or
+// Buffer#write) will replace incomplete surrogates with the unicode
+// replacement character. See https://codereview.chromium.org/121173009/ .
+StringDecoder.prototype.write = function(buffer) {
+  var charStr = '';
+  // if our last write ended with an incomplete multibyte character
+  while (this.charLength) {
+    // determine how many remaining bytes this buffer has to offer for this char
+    var available = (buffer.length >= this.charLength - this.charReceived) ?
+        this.charLength - this.charReceived :
+        buffer.length;
 
-  var len = string.length
-  if (len === 0) return 0
+    // add the new bytes to the char buffer
+    buffer.copy(this.charBuffer, this.charReceived, 0, available);
+    this.charReceived += available;
 
-  // Use a for loop to avoid recursion
-  var loweredCase = false
-  for (;;) {
-    switch (encoding) {
-      case 'ascii':
-      case 'latin1':
-      case 'binary':
-        return len
-      case 'utf8':
-      case 'utf-8':
-      case undefined:
-        return utf8ToBytes(string).length
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return len * 2
-      case 'hex':
-        return len >>> 1
-      case 'base64':
-        return base64ToBytes(string).length
-      default:
-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
-        encoding = ('' + encoding).toLowerCase()
-        loweredCase = true
+    if (this.charReceived < this.charLength) {
+      // still not enough chars in this buffer? wait for more ...
+      return '';
     }
-  }
-}
-Buffer.byteLength = byteLength
 
-function slowToString (encoding, start, end) {
-  var loweredCase = false
+    // remove bytes belonging to the current character from the buffer
+    buffer = buffer.slice(available, buffer.length);
 
-  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
-  // property of a typed array.
+    // get the character that was split
+    charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
 
-  // This behaves neither like String nor Uint8Array in that we set start/end
-  // to their upper/lower bounds if the value passed is out of range.
-  // undefined is handled specially as per ECMA-262 6th Edition,
-  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
-  if (start === undefined || start < 0) {
-    start = 0
-  }
-  // Return early if start > this.length. Done here to prevent potential uint32
-  // coercion fail below.
-  if (start > this.length) {
-    return ''
-  }
+    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+    var charCode = charStr.charCodeAt(charStr.length - 1);
+    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+      this.charLength += this.surrogateSize;
+      charStr = '';
+      continue;
+    }
+    this.charReceived = this.charLength = 0;
 
-  if (end === undefined || end > this.length) {
-    end = this.length
+    // if there are no more bytes in this buffer, just emit our char
+    if (buffer.length === 0) {
+      return charStr;
+    }
+    break;
   }
 
-  if (end <= 0) {
-    return ''
+  // determine and set charLength / charReceived
+  this.detectIncompleteChar(buffer);
+
+  var end = buffer.length;
+  if (this.charLength) {
+    // buffer the incomplete character bytes we got
+    buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
+    end -= this.charReceived;
   }
 
-  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
-  end >>>= 0
-  start >>>= 0
+  charStr += buffer.toString(this.encoding, 0, end);
 
-  if (end <= start) {
-    return ''
+  var end = charStr.length - 1;
+  var charCode = charStr.charCodeAt(end);
+  // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
+  if (charCode >= 0xD800 && charCode <= 0xDBFF) {
+    var size = this.surrogateSize;
+    this.charLength += size;
+    this.charReceived += size;
+    this.charBuffer.copy(this.charBuffer, size, 0, size);
+    buffer.copy(this.charBuffer, 0, 0, size);
+    return charStr.substring(0, end);
   }
 
-  if (!encoding) encoding = 'utf8'
-
-  while (true) {
-    switch (encoding) {
-      case 'hex':
-        return hexSlice(this, start, end)
+  // or just emit the charStr
+  return charStr;
+};
 
-      case 'utf8':
-      case 'utf-8':
-        return utf8Slice(this, start, end)
+// detectIncompleteChar determines if there is an incomplete UTF-8 character at
+// the end of the given buffer. If so, it sets this.charLength to the byte
+// length that character, and sets this.charReceived to the number of bytes
+// that are available for this character.
+StringDecoder.prototype.detectIncompleteChar = function(buffer) {
+  // determine how many bytes we have to check at the end of this buffer
+  var i = (buffer.length >= 3) ? 3 : buffer.length;
 
-      case 'ascii':
-        return asciiSlice(this, start, end)
+  // Figure out if one of the last i bytes of our buffer announces an
+  // incomplete char.
+  for (; i > 0; i--) {
+    var c = buffer[buffer.length - i];
 
-      case 'latin1':
-      case 'binary':
-        return latin1Slice(this, start, end)
+    // See http://en.wikipedia.org/wiki/UTF-8#Description
 
-      case 'base64':
-        return base64Slice(this, start, end)
+    // 110XXXXX
+    if (i == 1 && c >> 5 == 0x06) {
+      this.charLength = 2;
+      break;
+    }
 
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return utf16leSlice(this, start, end)
+    // 1110XXXX
+    if (i <= 2 && c >> 4 == 0x0E) {
+      this.charLength = 3;
+      break;
+    }
 
-      default:
-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
-        encoding = (encoding + '').toLowerCase()
-        loweredCase = true
+    // 11110XXX
+    if (i <= 3 && c >> 3 == 0x1E) {
+      this.charLength = 4;
+      break;
     }
   }
-}
+  this.charReceived = i;
+};
 
-// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
-// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
-// reliably in a browserify context because there could be multiple different
-// copies of the 'buffer' package in use. This method works even for Buffer
-// instances that were created from another copy of the `buffer` package.
-// See: https://github.com/feross/buffer/issues/154
-Buffer.prototype._isBuffer = true
+StringDecoder.prototype.end = function(buffer) {
+  var res = '';
+  if (buffer && buffer.length)
+    res = this.write(buffer);
 
-function swap (b, n, m) {
-  var i = b[n]
-  b[n] = b[m]
-  b[m] = i
+  if (this.charReceived) {
+    var cr = this.charReceived;
+    var buf = this.charBuffer;
+    var enc = this.encoding;
+    res += buf.slice(0, cr).toString(enc);
+  }
+
+  return res;
+};
+
+function passThroughWrite(buffer) {
+  return buffer.toString(this.encoding);
 }
 
-Buffer.prototype.swap16 = function swap16 () {
-  var len = this.length
-  if (len % 2 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 16-bits')
-  }
-  for (var i = 0; i < len; i += 2) {
-    swap(this, i, i + 1)
-  }
-  return this
+function utf16DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 2;
+  this.charLength = this.charReceived ? 2 : 0;
 }
 
-Buffer.prototype.swap32 = function swap32 () {
-  var len = this.length
-  if (len % 4 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 32-bits')
-  }
-  for (var i = 0; i < len; i += 4) {
-    swap(this, i, i + 3)
-    swap(this, i + 1, i + 2)
-  }
-  return this
+function base64DetectIncompleteChar(buffer) {
+  this.charReceived = buffer.length % 3;
+  this.charLength = this.charReceived ? 3 : 0;
 }
 
-Buffer.prototype.swap64 = function swap64 () {
-  var len = this.length
-  if (len % 8 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 64-bits')
+},{"buffer":5}],30:[function(require,module,exports){
+(function (global){
+
+/**
+ * Module exports.
+ */
+
+module.exports = deprecate;
+
+/**
+ * Mark that a method should not be used.
+ * Returns a modified function which warns once by default.
+ *
+ * If `localStorage.noDeprecation = true` is set, then it is a no-op.
+ *
+ * If `localStorage.throwDeprecation = true` is set, then deprecated functions
+ * will throw an Error when invoked.
+ *
+ * If `localStorage.traceDeprecation = true` is set, then deprecated functions
+ * will invoke `console.trace()` instead of `console.error()`.
+ *
+ * @param {Function} fn - the function to deprecate
+ * @param {String} msg - the string to print to the console when `fn` is invoked
+ * @returns {Function} a new "deprecated" version of `fn`
+ * @api public
+ */
+
+function deprecate (fn, msg) {
+  if (config('noDeprecation')) {
+    return fn;
   }
-  for (var i = 0; i < len; i += 8) {
-    swap(this, i, i + 7)
-    swap(this, i + 1, i + 6)
-    swap(this, i + 2, i + 5)
-    swap(this, i + 3, i + 4)
+
+  var warned = false;
+  function deprecated() {
+    if (!warned) {
+      if (config('throwDeprecation')) {
+        throw new Error(msg);
+      } else if (config('traceDeprecation')) {
+        console.trace(msg);
+      } else {
+        console.warn(msg);
+      }
+      warned = true;
+    }
+    return fn.apply(this, arguments);
   }
-  return this
-}
 
-Buffer.prototype.toString = function toString () {
-  var length = this.length
-  if (length === 0) return ''
-  if (arguments.length === 0) return utf8Slice(this, 0, length)
-  return slowToString.apply(this, arguments)
+  return deprecated;
 }
 
-Buffer.prototype.equals = function equals (b) {
-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
-  if (this === b) return true
-  return Buffer.compare(this, b) === 0
-}
+/**
+ * Checks `localStorage` for boolean values for the given `name`.
+ *
+ * @param {String} name
+ * @returns {Boolean}
+ * @api private
+ */
 
-Buffer.prototype.inspect = function inspect () {
-  var str = ''
-  var max = exports.INSPECT_MAX_BYTES
-  if (this.length > 0) {
-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
-    if (this.length > max) str += ' ... '
+function config (name) {
+  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
+  try {
+    if (!global.localStorage) return false;
+  } catch (_) {
+    return false;
   }
-  return '<Buffer ' + str + '>'
+  var val = global.localStorage[name];
+  if (null == val) return false;
+  return String(val).toLowerCase() === 'true';
 }
 
-Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
-  if (!Buffer.isBuffer(target)) {
-    throw new TypeError('Argument must be a Buffer')
-  }
+}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],31:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],32:[function(require,module,exports){
+module.exports = function isBuffer(arg) {
+  return arg && typeof arg === 'object'
+    && typeof arg.copy === 'function'
+    && typeof arg.fill === 'function'
+    && typeof arg.readUInt8 === 'function';
+}
+},{}],33:[function(require,module,exports){
+(function (process,global){
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-  if (start === undefined) {
-    start = 0
-  }
-  if (end === undefined) {
-    end = target ? target.length : 0
+var formatRegExp = /%[sdj%]/g;
+exports.format = function(f) {
+  if (!isString(f)) {
+    var objects = [];
+    for (var i = 0; i < arguments.length; i++) {
+      objects.push(inspect(arguments[i]));
+    }
+    return objects.join(' ');
   }
-  if (thisStart === undefined) {
-    thisStart = 0
+
+  var i = 1;
+  var args = arguments;
+  var len = args.length;
+  var str = String(f).replace(formatRegExp, function(x) {
+    if (x === '%%') return '%';
+    if (i >= len) return x;
+    switch (x) {
+      case '%s': return String(args[i++]);
+      case '%d': return Number(args[i++]);
+      case '%j':
+        try {
+          return JSON.stringify(args[i++]);
+        } catch (_) {
+          return '[Circular]';
+        }
+      default:
+        return x;
+    }
+  });
+  for (var x = args[i]; i < len; x = args[++i]) {
+    if (isNull(x) || !isObject(x)) {
+      str += ' ' + x;
+    } else {
+      str += ' ' + inspect(x);
+    }
   }
-  if (thisEnd === undefined) {
-    thisEnd = this.length
+  return str;
+};
+
+
+// Mark that a method should not be used.
+// Returns a modified function which warns once by default.
+// If --no-deprecation is set, then it is a no-op.
+exports.deprecate = function(fn, msg) {
+  // Allow for deprecating things in the process of starting up.
+  if (isUndefined(global.process)) {
+    return function() {
+      return exports.deprecate(fn, msg).apply(this, arguments);
+    };
   }
 
-  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
-    throw new RangeError('out of range index')
+  if (process.noDeprecation === true) {
+    return fn;
   }
 
-  if (thisStart >= thisEnd && start >= end) {
-    return 0
+  var warned = false;
+  function deprecated() {
+    if (!warned) {
+      if (process.throwDeprecation) {
+        throw new Error(msg);
+      } else if (process.traceDeprecation) {
+        console.trace(msg);
+      } else {
+        console.error(msg);
+      }
+      warned = true;
+    }
+    return fn.apply(this, arguments);
   }
-  if (thisStart >= thisEnd) {
-    return -1
+
+  return deprecated;
+};
+
+
+var debugs = {};
+var debugEnviron;
+exports.debuglog = function(set) {
+  if (isUndefined(debugEnviron))
+    debugEnviron = process.env.NODE_DEBUG || '';
+  set = set.toUpperCase();
+  if (!debugs[set]) {
+    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
+      var pid = process.pid;
+      debugs[set] = function() {
+        var msg = exports.format.apply(exports, arguments);
+        console.error('%s %d: %s', set, pid, msg);
+      };
+    } else {
+      debugs[set] = function() {};
+    }
   }
-  if (start >= end) {
-    return 1
+  return debugs[set];
+};
+
+
+/**
+ * Echos the value of a value. Trys to print the value out
+ * in the best way possible given the different types.
+ *
+ * @param {Object} obj The object to print out.
+ * @param {Object} opts Optional options object that alters the output.
+ */
+/* legacy: obj, showHidden, depth, colors*/
+function inspect(obj, opts) {
+  // default options
+  var ctx = {
+    seen: [],
+    stylize: stylizeNoColor
+  };
+  // legacy...
+  if (arguments.length >= 3) ctx.depth = arguments[2];
+  if (arguments.length >= 4) ctx.colors = arguments[3];
+  if (isBoolean(opts)) {
+    // legacy...
+    ctx.showHidden = opts;
+  } else if (opts) {
+    // got an "options" object
+    exports._extend(ctx, opts);
   }
+  // set default options
+  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
+  if (isUndefined(ctx.depth)) ctx.depth = 2;
+  if (isUndefined(ctx.colors)) ctx.colors = false;
+  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
+  if (ctx.colors) ctx.stylize = stylizeWithColor;
+  return formatValue(ctx, obj, ctx.depth);
+}
+exports.inspect = inspect;
 
-  start >>>= 0
-  end >>>= 0
-  thisStart >>>= 0
-  thisEnd >>>= 0
 
-  if (this === target) return 0
+// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
+inspect.colors = {
+  'bold' : [1, 22],
+  'italic' : [3, 23],
+  'underline' : [4, 24],
+  'inverse' : [7, 27],
+  'white' : [37, 39],
+  'grey' : [90, 39],
+  'black' : [30, 39],
+  'blue' : [34, 39],
+  'cyan' : [36, 39],
+  'green' : [32, 39],
+  'magenta' : [35, 39],
+  'red' : [31, 39],
+  'yellow' : [33, 39]
+};
 
-  var x = thisEnd - thisStart
-  var y = end - start
-  var len = Math.min(x, y)
+// Don't use 'blue' not visible on cmd.exe
+inspect.styles = {
+  'special': 'cyan',
+  'number': 'yellow',
+  'boolean': 'yellow',
+  'undefined': 'grey',
+  'null': 'bold',
+  'string': 'green',
+  'date': 'magenta',
+  // "name": intentionally not styling
+  'regexp': 'red'
+};
 
-  var thisCopy = this.slice(thisStart, thisEnd)
-  var targetCopy = target.slice(start, end)
 
-  for (var i = 0; i < len; ++i) {
-    if (thisCopy[i] !== targetCopy[i]) {
-      x = thisCopy[i]
-      y = targetCopy[i]
-      break
-    }
+function stylizeWithColor(str, styleType) {
+  var style = inspect.styles[styleType];
+
+  if (style) {
+    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
+           '\u001b[' + inspect.colors[style][1] + 'm';
+  } else {
+    return str;
   }
+}
 
-  if (x < y) return -1
-  if (y < x) return 1
-  return 0
+
+function stylizeNoColor(str, styleType) {
+  return str;
 }
 
-// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
-// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
-//
-// Arguments:
-// - buffer - a Buffer to search
-// - val - a string, Buffer, or number
-// - byteOffset - an index into `buffer`; will be clamped to an int32
-// - encoding - an optional encoding, relevant is val is a string
-// - dir - true for indexOf, false for lastIndexOf
-function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
-  // Empty buffer means no match
-  if (buffer.length === 0) return -1
 
-  // Normalize byteOffset
-  if (typeof byteOffset === 'string') {
-    encoding = byteOffset
-    byteOffset = 0
-  } else if (byteOffset > 0x7fffffff) {
-    byteOffset = 0x7fffffff
-  } else if (byteOffset < -0x80000000) {
-    byteOffset = -0x80000000
+function arrayToHash(array) {
+  var hash = {};
+
+  array.forEach(function(val, idx) {
+    hash[val] = true;
+  });
+
+  return hash;
+}
+
+
+function formatValue(ctx, value, recurseTimes) {
+  // Provide a hook for user-specified inspect functions.
+  // Check that value is an object with an inspect function on it
+  if (ctx.customInspect &&
+      value &&
+      isFunction(value.inspect) &&
+      // Filter out the util module, it's inspect function is special
+      value.inspect !== exports.inspect &&
+      // Also filter out any prototype objects using the circular check.
+      !(value.constructor && value.constructor.prototype === value)) {
+    var ret = value.inspect(recurseTimes, ctx);
+    if (!isString(ret)) {
+      ret = formatValue(ctx, ret, recurseTimes);
+    }
+    return ret;
   }
-  byteOffset = +byteOffset  // Coerce to Number.
-  if (numberIsNaN(byteOffset)) {
-    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
-    byteOffset = dir ? 0 : (buffer.length - 1)
+
+  // Primitive types cannot have properties
+  var primitive = formatPrimitive(ctx, value);
+  if (primitive) {
+    return primitive;
   }
 
-  // Normalize byteOffset: negative offsets start from the end of the buffer
-  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
-  if (byteOffset >= buffer.length) {
-    if (dir) return -1
-    else byteOffset = buffer.length - 1
-  } else if (byteOffset < 0) {
-    if (dir) byteOffset = 0
-    else return -1
+  // Look up the keys of the object.
+  var keys = Object.keys(value);
+  var visibleKeys = arrayToHash(keys);
+
+  if (ctx.showHidden) {
+    keys = Object.getOwnPropertyNames(value);
   }
 
-  // Normalize val
-  if (typeof val === 'string') {
-    val = Buffer.from(val, encoding)
+  // IE doesn't make error fields non-enumerable
+  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
+  if (isError(value)
+      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
+    return formatError(value);
   }
 
-  // Finally, search either indexOf (if dir is true) or lastIndexOf
-  if (Buffer.isBuffer(val)) {
-    // Special case: looking for empty string/buffer always fails
-    if (val.length === 0) {
-      return -1
+  // Some type of object without properties can be shortcutted.
+  if (keys.length === 0) {
+    if (isFunction(value)) {
+      var name = value.name ? ': ' + value.name : '';
+      return ctx.stylize('[Function' + name + ']', 'special');
     }
-    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
-  } else if (typeof val === 'number') {
-    val = val & 0xFF // Search for a byte value [0-255]
-    if (typeof Uint8Array.prototype.indexOf === 'function') {
-      if (dir) {
-        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
-      } else {
-        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
-      }
+    if (isRegExp(value)) {
+      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+    }
+    if (isDate(value)) {
+      return ctx.stylize(Date.prototype.toString.call(value), 'date');
+    }
+    if (isError(value)) {
+      return formatError(value);
     }
-    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
   }
 
-  throw new TypeError('val must be string, number or Buffer')
-}
+  var base = '', array = false, braces = ['{', '}'];
 
-function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
-  var indexSize = 1
-  var arrLength = arr.length
-  var valLength = val.length
+  // Make Array say that they are Array
+  if (isArray(value)) {
+    array = true;
+    braces = ['[', ']'];
+  }
 
-  if (encoding !== undefined) {
-    encoding = String(encoding).toLowerCase()
-    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
-        encoding === 'utf16le' || encoding === 'utf-16le') {
-      if (arr.length < 2 || val.length < 2) {
-        return -1
-      }
-      indexSize = 2
-      arrLength /= 2
-      valLength /= 2
-      byteOffset /= 2
-    }
+  // Make functions say that they are functions
+  if (isFunction(value)) {
+    var n = value.name ? ': ' + value.name : '';
+    base = ' [Function' + n + ']';
   }
 
-  function read (buf, i) {
-    if (indexSize === 1) {
-      return buf[i]
-    } else {
-      return buf.readUInt16BE(i * indexSize)
-    }
+  // Make RegExps say that they are RegExps
+  if (isRegExp(value)) {
+    base = ' ' + RegExp.prototype.toString.call(value);
   }
 
-  var i
-  if (dir) {
-    var foundIndex = -1
-    for (i = byteOffset; i < arrLength; i++) {
-      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
-        if (foundIndex === -1) foundIndex = i
-        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
-      } else {
-        if (foundIndex !== -1) i -= i - foundIndex
-        foundIndex = -1
-      }
-    }
-  } else {
-    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
-    for (i = byteOffset; i >= 0; i--) {
-      var found = true
-      for (var j = 0; j < valLength; j++) {
-        if (read(arr, i + j) !== read(val, j)) {
-          found = false
-          break
-        }
-      }
-      if (found) return i
-    }
+  // Make dates with properties first say the date
+  if (isDate(value)) {
+    base = ' ' + Date.prototype.toUTCString.call(value);
   }
 
-  return -1
-}
+  // Make error with message first say the error
+  if (isError(value)) {
+    base = ' ' + formatError(value);
+  }
 
-Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
-  return this.indexOf(val, byteOffset, encoding) !== -1
-}
+  if (keys.length === 0 && (!array || value.length == 0)) {
+    return braces[0] + base + braces[1];
+  }
 
-Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
-  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
-}
+  if (recurseTimes < 0) {
+    if (isRegExp(value)) {
+      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
+    } else {
+      return ctx.stylize('[Object]', 'special');
+    }
+  }
 
-Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
-  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
-}
+  ctx.seen.push(value);
 
-function hexWrite (buf, string, offset, length) {
-  offset = Number(offset) || 0
-  var remaining = buf.length - offset
-  if (!length) {
-    length = remaining
+  var output;
+  if (array) {
+    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
   } else {
-    length = Number(length)
-    if (length > remaining) {
-      length = remaining
-    }
+    output = keys.map(function(key) {
+      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
+    });
   }
 
-  // must be an even number of digits
-  var strLen = string.length
-  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+  ctx.seen.pop();
 
-  if (length > strLen / 2) {
-    length = strLen / 2
-  }
-  for (var i = 0; i < length; ++i) {
-    var parsed = parseInt(string.substr(i * 2, 2), 16)
-    if (numberIsNaN(parsed)) return i
-    buf[offset + i] = parsed
-  }
-  return i
+  return reduceToSingleString(output, base, braces);
 }
 
-function utf8Write (buf, string, offset, length) {
-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
-}
 
-function asciiWrite (buf, string, offset, length) {
-  return blitBuffer(asciiToBytes(string), buf, offset, length)
+function formatPrimitive(ctx, value) {
+  if (isUndefined(value))
+    return ctx.stylize('undefined', 'undefined');
+  if (isString(value)) {
+    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
+                                             .replace(/'/g, "\\'")
+                                             .replace(/\\"/g, '"') + '\'';
+    return ctx.stylize(simple, 'string');
+  }
+  if (isNumber(value))
+    return ctx.stylize('' + value, 'number');
+  if (isBoolean(value))
+    return ctx.stylize('' + value, 'boolean');
+  // For some reason typeof null is "object", so special case here.
+  if (isNull(value))
+    return ctx.stylize('null', 'null');
 }
 
-function latin1Write (buf, string, offset, length) {
-  return asciiWrite(buf, string, offset, length)
-}
 
-function base64Write (buf, string, offset, length) {
-  return blitBuffer(base64ToBytes(string), buf, offset, length)
+function formatError(value) {
+  return '[' + Error.prototype.toString.call(value) + ']';
 }
 
-function ucs2Write (buf, string, offset, length) {
-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
-}
 
-Buffer.prototype.write = function write (string, offset, length, encoding) {
-  // Buffer#write(string)
-  if (offset === undefined) {
-    encoding = 'utf8'
-    length = this.length
-    offset = 0
-  // Buffer#write(string, encoding)
-  } else if (length === undefined && typeof offset === 'string') {
-    encoding = offset
-    length = this.length
-    offset = 0
-  // Buffer#write(string, offset[, length][, encoding])
-  } else if (isFinite(offset)) {
-    offset = offset >>> 0
-    if (isFinite(length)) {
-      length = length >>> 0
-      if (encoding === undefined) encoding = 'utf8'
+function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
+  var output = [];
+  for (var i = 0, l = value.length; i < l; ++i) {
+    if (hasOwnProperty(value, String(i))) {
+      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+          String(i), true));
     } else {
-      encoding = length
-      length = undefined
+      output.push('');
     }
-  } else {
-    throw new Error(
-      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
-    )
   }
+  keys.forEach(function(key) {
+    if (!key.match(/^\d+$/)) {
+      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
+          key, true));
+    }
+  });
+  return output;
+}
 
-  var remaining = this.length - offset
-  if (length === undefined || length > remaining) length = remaining
 
-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
-    throw new RangeError('Attempt to write outside buffer bounds')
+function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
+  var name, str, desc;
+  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
+  if (desc.get) {
+    if (desc.set) {
+      str = ctx.stylize('[Getter/Setter]', 'special');
+    } else {
+      str = ctx.stylize('[Getter]', 'special');
+    }
+  } else {
+    if (desc.set) {
+      str = ctx.stylize('[Setter]', 'special');
+    }
+  }
+  if (!hasOwnProperty(visibleKeys, key)) {
+    name = '[' + key + ']';
+  }
+  if (!str) {
+    if (ctx.seen.indexOf(desc.value) < 0) {
+      if (isNull(recurseTimes)) {
+        str = formatValue(ctx, desc.value, null);
+      } else {
+        str = formatValue(ctx, desc.value, recurseTimes - 1);
+      }
+      if (str.indexOf('\n') > -1) {
+        if (array) {
+          str = str.split('\n').map(function(line) {
+            return '  ' + line;
+          }).join('\n').substr(2);
+        } else {
+          str = '\n' + str.split('\n').map(function(line) {
+            return '   ' + line;
+          }).join('\n');
+        }
+      }
+    } else {
+      str = ctx.stylize('[Circular]', 'special');
+    }
+  }
+  if (isUndefined(name)) {
+    if (array && key.match(/^\d+$/)) {
+      return str;
+    }
+    name = JSON.stringify('' + key);
+    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
+      name = name.substr(1, name.length - 2);
+      name = ctx.stylize(name, 'name');
+    } else {
+      name = name.replace(/'/g, "\\'")
+                 .replace(/\\"/g, '"')
+                 .replace(/(^"|"$)/g, "'");
+      name = ctx.stylize(name, 'string');
+    }
   }
 
-  if (!encoding) encoding = 'utf8'
-
-  var loweredCase = false
-  for (;;) {
-    switch (encoding) {
-      case 'hex':
-        return hexWrite(this, string, offset, length)
+  return name + ': ' + str;
+}
 
-      case 'utf8':
-      case 'utf-8':
-        return utf8Write(this, string, offset, length)
 
-      case 'ascii':
-        return asciiWrite(this, string, offset, length)
+function reduceToSingleString(output, base, braces) {
+  var numLinesEst = 0;
+  var length = output.reduce(function(prev, cur) {
+    numLinesEst++;
+    if (cur.indexOf('\n') >= 0) numLinesEst++;
+    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
+  }, 0);
 
-      case 'latin1':
-      case 'binary':
-        return latin1Write(this, string, offset, length)
+  if (length > 60) {
+    return braces[0] +
+           (base === '' ? '' : base + '\n ') +
+           ' ' +
+           output.join(',\n  ') +
+           ' ' +
+           braces[1];
+  }
 
-      case 'base64':
-        // Warning: maxLength not taken into account in base64Write
-        return base64Write(this, string, offset, length)
+  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
+}
 
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return ucs2Write(this, string, offset, length)
 
-      default:
-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
-        encoding = ('' + encoding).toLowerCase()
-        loweredCase = true
-    }
-  }
+// NOTE: These type checking functions intentionally don't use `instanceof`
+// because it is fragile and can be easily faked with `Object.create()`.
+function isArray(ar) {
+  return Array.isArray(ar);
 }
+exports.isArray = isArray;
 
-Buffer.prototype.toJSON = function toJSON () {
-  return {
-    type: 'Buffer',
-    data: Array.prototype.slice.call(this._arr || this, 0)
-  }
+function isBoolean(arg) {
+  return typeof arg === 'boolean';
 }
+exports.isBoolean = isBoolean;
 
-function base64Slice (buf, start, end) {
-  if (start === 0 && end === buf.length) {
-    return base64.fromByteArray(buf)
-  } else {
-    return base64.fromByteArray(buf.slice(start, end))
-  }
+function isNull(arg) {
+  return arg === null;
 }
+exports.isNull = isNull;
 
-function utf8Slice (buf, start, end) {
-  end = Math.min(buf.length, end)
-  var res = []
-
-  var i = start
-  while (i < end) {
-    var firstByte = buf[i]
-    var codePoint = null
-    var bytesPerSequence = (firstByte > 0xEF) ? 4
-      : (firstByte > 0xDF) ? 3
-      : (firstByte > 0xBF) ? 2
-      : 1
-
-    if (i + bytesPerSequence <= end) {
-      var secondByte, thirdByte, fourthByte, tempCodePoint
-
-      switch (bytesPerSequence) {
-        case 1:
-          if (firstByte < 0x80) {
-            codePoint = firstByte
-          }
-          break
-        case 2:
-          secondByte = buf[i + 1]
-          if ((secondByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
-            if (tempCodePoint > 0x7F) {
-              codePoint = tempCodePoint
-            }
-          }
-          break
-        case 3:
-          secondByte = buf[i + 1]
-          thirdByte = buf[i + 2]
-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
-              codePoint = tempCodePoint
-            }
-          }
-          break
-        case 4:
-          secondByte = buf[i + 1]
-          thirdByte = buf[i + 2]
-          fourthByte = buf[i + 3]
-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
-              codePoint = tempCodePoint
-            }
-          }
-      }
-    }
+function isNullOrUndefined(arg) {
+  return arg == null;
+}
+exports.isNullOrUndefined = isNullOrUndefined;
 
-    if (codePoint === null) {
-      // we did not generate a valid codePoint so insert a
-      // replacement char (U+FFFD) and advance only 1 byte
-      codePoint = 0xFFFD
-      bytesPerSequence = 1
-    } else if (codePoint > 0xFFFF) {
-      // encode to utf16 (surrogate pair dance)
-      codePoint -= 0x10000
-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
-      codePoint = 0xDC00 | codePoint & 0x3FF
-    }
+function isNumber(arg) {
+  return typeof arg === 'number';
+}
+exports.isNumber = isNumber;
 
-    res.push(codePoint)
-    i += bytesPerSequence
-  }
+function isString(arg) {
+  return typeof arg === 'string';
+}
+exports.isString = isString;
 
-  return decodeCodePointsArray(res)
+function isSymbol(arg) {
+  return typeof arg === 'symbol';
 }
+exports.isSymbol = isSymbol;
 
-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
-// the lowest limit is Chrome, with 0x10000 args.
-// We go 1 magnitude less, for safety
-var MAX_ARGUMENTS_LENGTH = 0x1000
+function isUndefined(arg) {
+  return arg === void 0;
+}
+exports.isUndefined = isUndefined;
 
-function decodeCodePointsArray (codePoints) {
-  var len = codePoints.length
-  if (len <= MAX_ARGUMENTS_LENGTH) {
-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
-  }
+function isRegExp(re) {
+  return isObject(re) && objectToString(re) === '[object RegExp]';
+}
+exports.isRegExp = isRegExp;
 
-  // Decode in chunks to avoid "call stack size exceeded".
-  var res = ''
-  var i = 0
-  while (i < len) {
-    res += String.fromCharCode.apply(
-      String,
-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
-    )
-  }
-  return res
+function isObject(arg) {
+  return typeof arg === 'object' && arg !== null;
 }
+exports.isObject = isObject;
 
-function asciiSlice (buf, start, end) {
-  var ret = ''
-  end = Math.min(buf.length, end)
-
-  for (var i = start; i < end; ++i) {
-    ret += String.fromCharCode(buf[i] & 0x7F)
-  }
-  return ret
+function isDate(d) {
+  return isObject(d) && objectToString(d) === '[object Date]';
 }
+exports.isDate = isDate;
 
-function latin1Slice (buf, start, end) {
-  var ret = ''
-  end = Math.min(buf.length, end)
+function isError(e) {
+  return isObject(e) &&
+      (objectToString(e) === '[object Error]' || e instanceof Error);
+}
+exports.isError = isError;
 
-  for (var i = start; i < end; ++i) {
-    ret += String.fromCharCode(buf[i])
-  }
-  return ret
+function isFunction(arg) {
+  return typeof arg === 'function';
 }
+exports.isFunction = isFunction;
 
-function hexSlice (buf, start, end) {
-  var len = buf.length
+function isPrimitive(arg) {
+  return arg === null ||
+         typeof arg === 'boolean' ||
+         typeof arg === 'number' ||
+         typeof arg === 'string' ||
+         typeof arg === 'symbol' ||  // ES6 symbol
+         typeof arg === 'undefined';
+}
+exports.isPrimitive = isPrimitive;
 
-  if (!start || start < 0) start = 0
-  if (!end || end < 0 || end > len) end = len
+exports.isBuffer = require('./support/isBuffer');
 
-  var out = ''
-  for (var i = start; i < end; ++i) {
-    out += toHex(buf[i])
-  }
-  return out
+function objectToString(o) {
+  return Object.prototype.toString.call(o);
 }
 
-function utf16leSlice (buf, start, end) {
-  var bytes = buf.slice(start, end)
-  var res = ''
-  for (var i = 0; i < bytes.length; i += 2) {
-    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
-  }
-  return res
+
+function pad(n) {
+  return n < 10 ? '0' + n.toString(10) : n.toString(10);
 }
 
-Buffer.prototype.slice = function slice (start, end) {
-  var len = this.length
-  start = ~~start
-  end = end === undefined ? len : ~~end
 
-  if (start < 0) {
-    start += len
-    if (start < 0) start = 0
-  } else if (start > len) {
-    start = len
-  }
+var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
+              'Oct', 'Nov', 'Dec'];
 
-  if (end < 0) {
-    end += len
-    if (end < 0) end = 0
-  } else if (end > len) {
-    end = len
-  }
+// 26 Feb 16:19:34
+function timestamp() {
+  var d = new Date();
+  var time = [pad(d.getHours()),
+              pad(d.getMinutes()),
+              pad(d.getSeconds())].join(':');
+  return [d.getDate(), months[d.getMonth()], time].join(' ');
+}
 
-  if (end < start) end = start
 
-  var newBuf = this.subarray(start, end)
-  // Return an augmented `Uint8Array` instance
-  newBuf.__proto__ = Buffer.prototype
-  return newBuf
-}
+// log is just a thin wrapper to console.log that prepends a timestamp
+exports.log = function() {
+  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
+};
 
-/*
- * Need to make sure that buffer isn't trying to write out of bounds.
+
+/**
+ * Inherit the prototype methods from one constructor into another.
+ *
+ * The Function.prototype.inherits from lang.js rewritten as a standalone
+ * function (not on Function.prototype). NOTE: If this file is to be loaded
+ * during bootstrapping this function needs to be rewritten using some native
+ * functions as prototype setup using normal JavaScript does not work as
+ * expected during bootstrapping (see mirror.js in r114903).
+ *
+ * @param {function} ctor Constructor function which needs to inherit the
+ *     prototype.
+ * @param {function} superCtor Constructor function to inherit prototype from.
  */
-function checkOffset (offset, ext, length) {
-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
-}
+exports.inherits = require('inherits');
 
-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+exports._extend = function(origin, add) {
+  // Don't do anything if add isn't an object
+  if (!add || !isObject(add)) return origin;
 
-  var val = this[offset]
-  var mul = 1
-  var i = 0
-  while (++i < byteLength && (mul *= 0x100)) {
-    val += this[offset + i] * mul
+  var keys = Object.keys(add);
+  var i = keys.length;
+  while (i--) {
+    origin[keys[i]] = add[keys[i]];
   }
+  return origin;
+};
 
-  return val
+function hasOwnProperty(obj, prop) {
+  return Object.prototype.hasOwnProperty.call(obj, prop);
 }
 
-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    checkOffset(offset, byteLength, this.length)
-  }
+}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./support/isBuffer":32,"_process":13,"inherits":31}],34:[function(require,module,exports){
+bitcoin = {
+      base58: require('bs58'),
+      bitcoin: require('bitcoinjs-lib'),
+      ecurve: require('ecurve'),
+      BigInteger: require('bigi'),
+      Buffer: require('buffer'),
+      elliptic: require('elliptic'),
+      bs58check: require('bs58check'),
+}
 
-  var val = this[offset + --byteLength]
-  var mul = 1
-  while (byteLength > 0 && (mul *= 0x100)) {
-    val += this[offset + --byteLength] * mul
-  }
+module.exports = bitcoin;
 
-  return val
-}
+},{"bigi":39,"bitcoinjs-lib":52,"bs58":83,"bs58check":85,"buffer":5,"ecurve":94,"elliptic":97}],35:[function(require,module,exports){
+// base-x encoding
+// Forked from https://github.com/cryptocoinjs/bs58
+// Originally written by Mike Hearn for BitcoinJ
+// Copyright (c) 2011 Google Inc
+// Ported to JavaScript by Stefan Thomas
+// Merged Buffer refactorings from base58-native by Stephen Pair
+// Copyright (c) 2013 BitPay Inc
 
-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 1, this.length)
-  return this[offset]
-}
+var Buffer = require('safe-buffer').Buffer
 
-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  return this[offset] | (this[offset + 1] << 8)
-}
+module.exports = function base (ALPHABET) {
+  var ALPHABET_MAP = {}
+  var BASE = ALPHABET.length
+  var LEADER = ALPHABET.charAt(0)
 
-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  return (this[offset] << 8) | this[offset + 1]
-}
+  // pre-compute lookup table
+  for (var z = 0; z < ALPHABET.length; z++) {
+    var x = ALPHABET.charAt(z)
 
-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+    if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
+    ALPHABET_MAP[x] = z
+  }
 
-  return ((this[offset]) |
-      (this[offset + 1] << 8) |
-      (this[offset + 2] << 16)) +
-      (this[offset + 3] * 0x1000000)
-}
+  function encode (source) {
+    if (source.length === 0) return ''
 
-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+    var digits = [0]
+    for (var i = 0; i < source.length; ++i) {
+      for (var j = 0, carry = source[i]; j < digits.length; ++j) {
+        carry += digits[j] << 8
+        digits[j] = carry % BASE
+        carry = (carry / BASE) | 0
+      }
 
-  return (this[offset] * 0x1000000) +
-    ((this[offset + 1] << 16) |
-    (this[offset + 2] << 8) |
-    this[offset + 3])
-}
+      while (carry > 0) {
+        digits.push(carry % BASE)
+        carry = (carry / BASE) | 0
+      }
+    }
 
-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+    var string = ''
 
-  var val = this[offset]
-  var mul = 1
-  var i = 0
-  while (++i < byteLength && (mul *= 0x100)) {
-    val += this[offset + i] * mul
+    // deal with leading zeros
+    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0]
+    // convert digits to a string
+    for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
+
+    return string
   }
-  mul *= 0x80
 
-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+  function decodeUnsafe (string) {
+    if (string.length === 0) return Buffer.allocUnsafe(0)
 
-  return val
-}
+    var bytes = [0]
+    for (var i = 0; i < string.length; i++) {
+      var value = ALPHABET_MAP[string[i]]
+      if (value === undefined) return
 
-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+      for (var j = 0, carry = value; j < bytes.length; ++j) {
+        carry += bytes[j] * BASE
+        bytes[j] = carry & 0xff
+        carry >>= 8
+      }
 
-  var i = byteLength
-  var mul = 1
-  var val = this[offset + --i]
-  while (i > 0 && (mul *= 0x100)) {
-    val += this[offset + --i] * mul
+      while (carry > 0) {
+        bytes.push(carry & 0xff)
+        carry >>= 8
+      }
+    }
+
+    // deal with leading zeros
+    for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
+      bytes.push(0)
+    }
+
+    return Buffer.from(bytes.reverse())
   }
-  mul *= 0x80
 
-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+  function decode (string) {
+    var buffer = decodeUnsafe(string)
+    if (buffer) return buffer
 
-  return val
-}
+    throw new Error('Non-base' + BASE + ' character')
+  }
 
-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 1, this.length)
-  if (!(this[offset] & 0x80)) return (this[offset])
-  return ((0xff - this[offset] + 1) * -1)
+  return {
+    encode: encode,
+    decodeUnsafe: decodeUnsafe,
+    decode: decode
+  }
 }
 
-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  var val = this[offset] | (this[offset + 1] << 8)
-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+},{"safe-buffer":128}],36:[function(require,module,exports){
+'use strict'
+let ALPHABET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l'
+
+// pre-compute lookup table
+let ALPHABET_MAP = {}
+for (let z = 0; z < ALPHABET.length; z++) {
+  let x = ALPHABET.charAt(z)
+
+  if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
+  ALPHABET_MAP[x] = z
 }
 
-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  var val = this[offset + 1] | (this[offset] << 8)
-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+function polymodStep (pre) {
+  let b = pre >> 25
+  return ((pre & 0x1FFFFFF) << 5) ^
+    (-((b >> 0) & 1) & 0x3b6a57b2) ^
+    (-((b >> 1) & 1) & 0x26508e6d) ^
+    (-((b >> 2) & 1) & 0x1ea119fa) ^
+    (-((b >> 3) & 1) & 0x3d4233dd) ^
+    (-((b >> 4) & 1) & 0x2a1462b3)
 }
 
-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+function prefixChk (prefix) {
+  let chk = 1
+  for (let i = 0; i < prefix.length; ++i) {
+    let c = prefix.charCodeAt(i)
+    if (c < 33 || c > 126) throw new Error('Invalid prefix (' + prefix + ')')
 
-  return (this[offset]) |
-    (this[offset + 1] << 8) |
-    (this[offset + 2] << 16) |
-    (this[offset + 3] << 24)
+    chk = polymodStep(chk) ^ (c >> 5)
+  }
+  chk = polymodStep(chk)
+
+  for (let i = 0; i < prefix.length; ++i) {
+    let v = prefix.charCodeAt(i)
+    chk = polymodStep(chk) ^ (v & 0x1f)
+  }
+  return chk
 }
 
-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+function encode (prefix, words) {
+  // too long?
+  if ((prefix.length + 7 + words.length) > 90) throw new TypeError('Exceeds Bech32 maximum length')
+  prefix = prefix.toLowerCase()
 
-  return (this[offset] << 24) |
-    (this[offset + 1] << 16) |
-    (this[offset + 2] << 8) |
-    (this[offset + 3])
-}
+  // determine chk mod
+  let chk = prefixChk(prefix)
+  let result = prefix + '1'
+  for (let i = 0; i < words.length; ++i) {
+    let x = words[i]
+    if ((x >> 5) !== 0) throw new Error('Non 5-bit word')
 
-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
-  return ieee754.read(this, offset, true, 23, 4)
-}
+    chk = polymodStep(chk) ^ x
+    result += ALPHABET.charAt(x)
+  }
 
-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
-  return ieee754.read(this, offset, false, 23, 4)
-}
+  for (let i = 0; i < 6; ++i) {
+    chk = polymodStep(chk)
+  }
+  chk ^= 1
 
-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 8, this.length)
-  return ieee754.read(this, offset, true, 52, 8)
-}
+  for (let i = 0; i < 6; ++i) {
+    let v = (chk >> ((5 - i) * 5)) & 0x1f
+    result += ALPHABET.charAt(v)
+  }
 
-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 8, this.length)
-  return ieee754.read(this, offset, false, 52, 8)
+  return result
 }
 
-function checkInt (buf, value, offset, ext, max, min) {
-  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
-  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
-  if (offset + ext > buf.length) throw new RangeError('Index out of range')
-}
+function decode (str) {
+  if (str.length < 8) throw new TypeError(str + ' too short')
+  if (str.length > 90) throw new TypeError(str + ' too long')
 
-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    var maxBytes = Math.pow(2, 8 * byteLength) - 1
-    checkInt(this, value, offset, byteLength, maxBytes, 0)
-  }
+  // don't allow mixed case
+  let lowered = str.toLowerCase()
+  let uppered = str.toUpperCase()
+  if (str !== lowered && str !== uppered) throw new Error('Mixed-case string ' + str)
+  str = lowered
 
-  var mul = 1
-  var i = 0
-  this[offset] = value & 0xFF
-  while (++i < byteLength && (mul *= 0x100)) {
-    this[offset + i] = (value / mul) & 0xFF
+  let split = str.lastIndexOf('1')
+  if (split === 0) throw new Error('Missing prefix for ' + str)
+
+  let prefix = str.slice(0, split)
+  let wordChars = str.slice(split + 1)
+  if (wordChars.length < 6) throw new Error('Data too short')
+
+  let chk = prefixChk(prefix)
+  let words = []
+  for (let i = 0; i < wordChars.length; ++i) {
+    let c = wordChars.charAt(i)
+    let v = ALPHABET_MAP[c]
+    if (v === undefined) throw new Error('Unknown character ' + c)
+    chk = polymodStep(chk) ^ v
+
+    // not in the checksum?
+    if (i + 6 >= wordChars.length) continue
+    words.push(v)
   }
 
-  return offset + byteLength
+  if (chk !== 1) throw new Error('Invalid checksum for ' + str)
+  return { prefix, words }
 }
 
-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    var maxBytes = Math.pow(2, 8 * byteLength) - 1
-    checkInt(this, value, offset, byteLength, maxBytes, 0)
+function convert (data, inBits, outBits, pad) {
+  let value = 0
+  let bits = 0
+  let maxV = (1 << outBits) - 1
+
+  let result = []
+  for (let i = 0; i < data.length; ++i) {
+    value = (value << inBits) | data[i]
+    bits += inBits
+
+    while (bits >= outBits) {
+      bits -= outBits
+      result.push((value >> bits) & maxV)
+    }
   }
 
-  var i = byteLength - 1
-  var mul = 1
-  this[offset + i] = value & 0xFF
-  while (--i >= 0 && (mul *= 0x100)) {
-    this[offset + i] = (value / mul) & 0xFF
+  if (pad) {
+    if (bits > 0) {
+      result.push((value << (outBits - bits)) & maxV)
+    }
+  } else {
+    if (bits >= inBits) throw new Error('Excess padding')
+    if ((value << (outBits - bits)) & maxV) throw new Error('Non-zero padding')
   }
 
-  return offset + byteLength
+  return result
 }
 
-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
-  this[offset] = (value & 0xff)
-  return offset + 1
+function toWords (bytes) {
+  return convert(bytes, 8, 5, true)
 }
 
-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  return offset + 2
+function fromWords (words) {
+  return convert(words, 5, 8, false)
 }
 
-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
-  return offset + 2
-}
+module.exports = { decode, encode, toWords, fromWords }
 
-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
-  this[offset + 3] = (value >>> 24)
-  this[offset + 2] = (value >>> 16)
-  this[offset + 1] = (value >>> 8)
-  this[offset] = (value & 0xff)
-  return offset + 4
+},{}],37:[function(require,module,exports){
+// (public) Constructor
+function BigInteger(a, b, c) {
+  if (!(this instanceof BigInteger))
+    return new BigInteger(a, b, c)
+
+  if (a != null) {
+    if ("number" == typeof a) this.fromNumber(a, b, c)
+    else if (b == null && "string" != typeof a) this.fromString(a, 256)
+    else this.fromString(a, b)
+  }
 }
 
-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
-  this[offset] = (value >>> 24)
-  this[offset + 1] = (value >>> 16)
-  this[offset + 2] = (value >>> 8)
-  this[offset + 3] = (value & 0xff)
-  return offset + 4
+var proto = BigInteger.prototype
+
+// duck-typed isBigInteger
+proto.__bigi = require('../package.json').version
+BigInteger.isBigInteger = function (obj, check_ver) {
+  return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi)
 }
 
-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
+// Bits per digit
+var dbits
 
-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
-  }
+// am: Compute w_j += (x*this_i), propagate carries,
+// c is initial carry, returns final carry.
+// c < 3*dvalue, x < 2*dvalue, this_i < dvalue
+// We need to select the fastest one that works in this environment.
 
-  var i = 0
-  var mul = 1
-  var sub = 0
-  this[offset] = value & 0xFF
-  while (++i < byteLength && (mul *= 0x100)) {
-    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
-      sub = 1
-    }
-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
+// am1: use a single mult and divide to get the high bits,
+// max digit bits should be 26 because
+// max internal value = 2*dvalue^2-2*dvalue (< 2^53)
+function am1(i, x, w, j, c, n) {
+  while (--n >= 0) {
+    var v = x * this[i++] + w[j] + c
+    c = Math.floor(v / 0x4000000)
+    w[j++] = v & 0x3ffffff
   }
-
-  return offset + byteLength
+  return c
+}
+// am2 avoids a big mult-and-extract completely.
+// Max digit bits should be <= 30 because we do bitwise ops
+// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
+function am2(i, x, w, j, c, n) {
+  var xl = x & 0x7fff,
+    xh = x >> 15
+  while (--n >= 0) {
+    var l = this[i] & 0x7fff
+    var h = this[i++] >> 15
+    var m = xh * l + h * xl
+    l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff)
+    c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30)
+    w[j++] = l & 0x3fffffff
+  }
+  return c
+}
+// Alternately, set max digit bits to 28 since some
+// browsers slow down when dealing with 32-bit numbers.
+function am3(i, x, w, j, c, n) {
+  var xl = x & 0x3fff,
+    xh = x >> 14
+  while (--n >= 0) {
+    var l = this[i] & 0x3fff
+    var h = this[i++] >> 14
+    var m = xh * l + h * xl
+    l = xl * l + ((m & 0x3fff) << 14) + w[j] + c
+    c = (l >> 28) + (m >> 14) + xh * h
+    w[j++] = l & 0xfffffff
+  }
+  return c
 }
 
-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
+// wtf?
+BigInteger.prototype.am = am1
+dbits = 26
+
+BigInteger.prototype.DB = dbits
+BigInteger.prototype.DM = ((1 << dbits) - 1)
+var DV = BigInteger.prototype.DV = (1 << dbits)
 
-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
-  }
+var BI_FP = 52
+BigInteger.prototype.FV = Math.pow(2, BI_FP)
+BigInteger.prototype.F1 = BI_FP - dbits
+BigInteger.prototype.F2 = 2 * dbits - BI_FP
 
-  var i = byteLength - 1
-  var mul = 1
-  var sub = 0
-  this[offset + i] = value & 0xFF
-  while (--i >= 0 && (mul *= 0x100)) {
-    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
-      sub = 1
-    }
-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
-  }
+// Digit conversions
+var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz"
+var BI_RC = new Array()
+var rr, vv
+rr = "0".charCodeAt(0)
+for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv
+rr = "a".charCodeAt(0)
+for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv
+rr = "A".charCodeAt(0)
+for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv
 
-  return offset + byteLength
+function int2char(n) {
+  return BI_RM.charAt(n)
 }
 
-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
-  if (value < 0) value = 0xff + value + 1
-  this[offset] = (value & 0xff)
-  return offset + 1
+function intAt(s, i) {
+  var c = BI_RC[s.charCodeAt(i)]
+  return (c == null) ? -1 : c
 }
 
-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  return offset + 2
+// (protected) copy this to r
+function bnpCopyTo(r) {
+  for (var i = this.t - 1; i >= 0; --i) r[i] = this[i]
+  r.t = this.t
+  r.s = this.s
 }
 
-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
-  return offset + 2
+// (protected) set from integer value x, -DV <= x < DV
+function bnpFromInt(x) {
+  this.t = 1
+  this.s = (x < 0) ? -1 : 0
+  if (x > 0) this[0] = x
+  else if (x < -1) this[0] = x + DV
+  else this.t = 0
 }
 
-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  this[offset + 2] = (value >>> 16)
-  this[offset + 3] = (value >>> 24)
-  return offset + 4
+// return bigint initialized to value
+function nbv(i) {
+  var r = new BigInteger()
+  r.fromInt(i)
+  return r
 }
 
-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
-  if (value < 0) value = 0xffffffff + value + 1
-  this[offset] = (value >>> 24)
-  this[offset + 1] = (value >>> 16)
-  this[offset + 2] = (value >>> 8)
-  this[offset + 3] = (value & 0xff)
-  return offset + 4
+// (protected) set from string and radix
+function bnpFromString(s, b) {
+  var self = this
+
+  var k
+  if (b == 16) k = 4
+  else if (b == 8) k = 3
+  else if (b == 256) k = 8; // byte array
+  else if (b == 2) k = 1
+  else if (b == 32) k = 5
+  else if (b == 4) k = 2
+  else {
+    self.fromRadix(s, b)
+    return
+  }
+  self.t = 0
+  self.s = 0
+  var i = s.length,
+    mi = false,
+    sh = 0
+  while (--i >= 0) {
+    var x = (k == 8) ? s[i] & 0xff : intAt(s, i)
+    if (x < 0) {
+      if (s.charAt(i) == "-") mi = true
+      continue
+    }
+    mi = false
+    if (sh == 0)
+      self[self.t++] = x
+    else if (sh + k > self.DB) {
+      self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh
+      self[self.t++] = (x >> (self.DB - sh))
+    } else
+      self[self.t - 1] |= x << sh
+    sh += k
+    if (sh >= self.DB) sh -= self.DB
+  }
+  if (k == 8 && (s[0] & 0x80) != 0) {
+    self.s = -1
+    if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh
+  }
+  self.clamp()
+  if (mi) BigInteger.ZERO.subTo(self, self)
 }
 
-function checkIEEE754 (buf, value, offset, ext, max, min) {
-  if (offset + ext > buf.length) throw new RangeError('Index out of range')
-  if (offset < 0) throw new RangeError('Index out of range')
+// (protected) clamp off excess high words
+function bnpClamp() {
+  var c = this.s & this.DM
+  while (this.t > 0 && this[this.t - 1] == c)--this.t
 }
 
-function writeFloat (buf, value, offset, littleEndian, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+// (public) return string representation in given radix
+function bnToString(b) {
+  var self = this
+  if (self.s < 0) return "-" + self.negate()
+    .toString(b)
+  var k
+  if (b == 16) k = 4
+  else if (b == 8) k = 3
+  else if (b == 2) k = 1
+  else if (b == 32) k = 5
+  else if (b == 4) k = 2
+  else return self.toRadix(b)
+  var km = (1 << k) - 1,
+    d, m = false,
+    r = "",
+    i = self.t
+  var p = self.DB - (i * self.DB) % k
+  if (i-- > 0) {
+    if (p < self.DB && (d = self[i] >> p) > 0) {
+      m = true
+      r = int2char(d)
+    }
+    while (i >= 0) {
+      if (p < k) {
+        d = (self[i] & ((1 << p) - 1)) << (k - p)
+        d |= self[--i] >> (p += self.DB - k)
+      } else {
+        d = (self[i] >> (p -= k)) & km
+        if (p <= 0) {
+          p += self.DB
+          --i
+        }
+      }
+      if (d > 0) m = true
+      if (m) r += int2char(d)
+    }
   }
-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
-  return offset + 4
+  return m ? r : "0"
 }
 
-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
-  return writeFloat(this, value, offset, true, noAssert)
+// (public) -this
+function bnNegate() {
+  var r = new BigInteger()
+  BigInteger.ZERO.subTo(this, r)
+  return r
 }
 
-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
-  return writeFloat(this, value, offset, false, noAssert)
+// (public) |this|
+function bnAbs() {
+  return (this.s < 0) ? this.negate() : this
 }
 
-function writeDouble (buf, value, offset, littleEndian, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
+// (public) return + if this > a, - if this < a, 0 if equal
+function bnCompareTo(a) {
+  var r = this.s - a.s
+  if (r != 0) return r
+  var i = this.t
+  r = i - a.t
+  if (r != 0) return (this.s < 0) ? -r : r
+  while (--i >= 0)
+    if ((r = this[i] - a[i]) != 0) return r
+  return 0
+}
+
+// returns bit length of the integer x
+function nbits(x) {
+  var r = 1,
+    t
+  if ((t = x >>> 16) != 0) {
+    x = t
+    r += 16
   }
-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
-  return offset + 8
+  if ((t = x >> 8) != 0) {
+    x = t
+    r += 8
+  }
+  if ((t = x >> 4) != 0) {
+    x = t
+    r += 4
+  }
+  if ((t = x >> 2) != 0) {
+    x = t
+    r += 2
+  }
+  if ((t = x >> 1) != 0) {
+    x = t
+    r += 1
+  }
+  return r
 }
 
-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
-  return writeDouble(this, value, offset, true, noAssert)
+// (public) return the number of bits in "this"
+function bnBitLength() {
+  if (this.t <= 0) return 0
+  return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM))
 }
 
-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
-  return writeDouble(this, value, offset, false, noAssert)
+// (public) return the number of bytes in "this"
+function bnByteLength() {
+  return this.bitLength() >> 3
 }
 
-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
-  if (!start) start = 0
-  if (!end && end !== 0) end = this.length
-  if (targetStart >= target.length) targetStart = target.length
-  if (!targetStart) targetStart = 0
-  if (end > 0 && end < start) end = start
+// (protected) r = this << n*DB
+function bnpDLShiftTo(n, r) {
+  var i
+  for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i]
+  for (i = n - 1; i >= 0; --i) r[i] = 0
+  r.t = this.t + n
+  r.s = this.s
+}
 
-  // Copy 0 bytes; we're done
-  if (end === start) return 0
-  if (target.length === 0 || this.length === 0) return 0
+// (protected) r = this >> n*DB
+function bnpDRShiftTo(n, r) {
+  for (var i = n; i < this.t; ++i) r[i - n] = this[i]
+  r.t = Math.max(this.t - n, 0)
+  r.s = this.s
+}
 
-  // Fatal error conditions
-  if (targetStart < 0) {
-    throw new RangeError('targetStart out of bounds')
+// (protected) r = this << n
+function bnpLShiftTo(n, r) {
+  var self = this
+  var bs = n % self.DB
+  var cbs = self.DB - bs
+  var bm = (1 << cbs) - 1
+  var ds = Math.floor(n / self.DB),
+    c = (self.s << bs) & self.DM,
+    i
+  for (i = self.t - 1; i >= 0; --i) {
+    r[i + ds + 1] = (self[i] >> cbs) | c
+    c = (self[i] & bm) << bs
   }
-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+  for (i = ds - 1; i >= 0; --i) r[i] = 0
+  r[ds] = c
+  r.t = self.t + ds + 1
+  r.s = self.s
+  r.clamp()
+}
 
-  // Are we oob?
-  if (end > this.length) end = this.length
-  if (target.length - targetStart < end - start) {
-    end = target.length - targetStart + start
+// (protected) r = this >> n
+function bnpRShiftTo(n, r) {
+  var self = this
+  r.s = self.s
+  var ds = Math.floor(n / self.DB)
+  if (ds >= self.t) {
+    r.t = 0
+    return
   }
+  var bs = n % self.DB
+  var cbs = self.DB - bs
+  var bm = (1 << bs) - 1
+  r[0] = self[ds] >> bs
+  for (var i = ds + 1; i < self.t; ++i) {
+    r[i - ds - 1] |= (self[i] & bm) << cbs
+    r[i - ds] = self[i] >> bs
+  }
+  if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs
+  r.t = self.t - ds
+  r.clamp()
+}
 
-  var len = end - start
-  var i
-
-  if (this === target && start < targetStart && targetStart < end) {
-    // descending copy from end
-    for (i = len - 1; i >= 0; --i) {
-      target[i + targetStart] = this[i + start]
-    }
-  } else if (len < 1000) {
-    // ascending copy from start
-    for (i = 0; i < len; ++i) {
-      target[i + targetStart] = this[i + start]
+// (protected) r = this - a
+function bnpSubTo(a, r) {
+  var self = this
+  var i = 0,
+    c = 0,
+    m = Math.min(a.t, self.t)
+  while (i < m) {
+    c += self[i] - a[i]
+    r[i++] = c & self.DM
+    c >>= self.DB
+  }
+  if (a.t < self.t) {
+    c -= a.s
+    while (i < self.t) {
+      c += self[i]
+      r[i++] = c & self.DM
+      c >>= self.DB
     }
+    c += self.s
   } else {
-    Uint8Array.prototype.set.call(
-      target,
-      this.subarray(start, start + len),
-      targetStart
-    )
+    c += self.s
+    while (i < a.t) {
+      c -= a[i]
+      r[i++] = c & self.DM
+      c >>= self.DB
+    }
+    c -= a.s
   }
+  r.s = (c < 0) ? -1 : 0
+  if (c < -1) r[i++] = self.DV + c
+  else if (c > 0) r[i++] = c
+  r.t = i
+  r.clamp()
+}
 
-  return len
+// (protected) r = this * a, r != this,a (HAC 14.12)
+// "this" should be the larger one if appropriate.
+function bnpMultiplyTo(a, r) {
+  var x = this.abs(),
+    y = a.abs()
+  var i = x.t
+  r.t = i + y.t
+  while (--i >= 0) r[i] = 0
+  for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t)
+  r.s = 0
+  r.clamp()
+  if (this.s != a.s) BigInteger.ZERO.subTo(r, r)
 }
 
-// Usage:
-//    buffer.fill(number[, offset[, end]])
-//    buffer.fill(buffer[, offset[, end]])
-//    buffer.fill(string[, offset[, end]][, encoding])
-Buffer.prototype.fill = function fill (val, start, end, encoding) {
-  // Handle string cases:
-  if (typeof val === 'string') {
-    if (typeof start === 'string') {
-      encoding = start
-      start = 0
-      end = this.length
-    } else if (typeof end === 'string') {
-      encoding = end
-      end = this.length
-    }
-    if (val.length === 1) {
-      var code = val.charCodeAt(0)
-      if (code < 256) {
-        val = code
-      }
-    }
-    if (encoding !== undefined && typeof encoding !== 'string') {
-      throw new TypeError('encoding must be a string')
-    }
-    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
-      throw new TypeError('Unknown encoding: ' + encoding)
+// (protected) r = this^2, r != this (HAC 14.16)
+function bnpSquareTo(r) {
+  var x = this.abs()
+  var i = r.t = 2 * x.t
+  while (--i >= 0) r[i] = 0
+  for (i = 0; i < x.t - 1; ++i) {
+    var c = x.am(i, x[i], r, 2 * i, 0, 1)
+    if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) {
+      r[i + x.t] -= x.DV
+      r[i + x.t + 1] = 1
     }
-  } else if (typeof val === 'number') {
-    val = val & 255
-  }
-
-  // Invalid ranges are not set to a default, so can range check early.
-  if (start < 0 || this.length < start || this.length < end) {
-    throw new RangeError('Out of range index')
   }
+  if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1)
+  r.s = 0
+  r.clamp()
+}
 
-  if (end <= start) {
-    return this
+// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
+// r != q, this != m.  q or r may be null.
+function bnpDivRemTo(m, q, r) {
+  var self = this
+  var pm = m.abs()
+  if (pm.t <= 0) return
+  var pt = self.abs()
+  if (pt.t < pm.t) {
+    if (q != null) q.fromInt(0)
+    if (r != null) self.copyTo(r)
+    return
   }
-
-  start = start >>> 0
-  end = end === undefined ? this.length : end >>> 0
-
-  if (!val) val = 0
-
-  var i
-  if (typeof val === 'number') {
-    for (i = start; i < end; ++i) {
-      this[i] = val
-    }
+  if (r == null) r = new BigInteger()
+  var y = new BigInteger(),
+    ts = self.s,
+    ms = m.s
+  var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus
+  if (nsh > 0) {
+    pm.lShiftTo(nsh, y)
+    pt.lShiftTo(nsh, r)
   } else {
-    var bytes = Buffer.isBuffer(val)
-      ? val
-      : new Buffer(val, encoding)
-    var len = bytes.length
-    for (i = 0; i < end - start; ++i) {
-      this[i + start] = bytes[i % len]
+    pm.copyTo(y)
+    pt.copyTo(r)
+  }
+  var ys = y.t
+  var y0 = y[ys - 1]
+  if (y0 == 0) return
+  var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0)
+  var d1 = self.FV / yt,
+    d2 = (1 << self.F1) / yt,
+    e = 1 << self.F2
+  var i = r.t,
+    j = i - ys,
+    t = (q == null) ? new BigInteger() : q
+  y.dlShiftTo(j, t)
+  if (r.compareTo(t) >= 0) {
+    r[r.t++] = 1
+    r.subTo(t, r)
+  }
+  BigInteger.ONE.dlShiftTo(ys, t)
+  t.subTo(y, y); // "negative" y so we can replace sub with am later
+  while (y.t < ys) y[y.t++] = 0
+  while (--j >= 0) {
+    // Estimate quotient digit
+    var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2)
+    if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out
+      y.dlShiftTo(j, t)
+      r.subTo(t, r)
+      while (r[i] < --qd) r.subTo(t, r)
     }
   }
-
-  return this
-}
-
-// HELPER FUNCTIONS
-// ================
-
-var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
-
-function base64clean (str) {
-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
-  str = str.trim().replace(INVALID_BASE64_RE, '')
-  // Node converts strings with length < 2 to ''
-  if (str.length < 2) return ''
-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
-  while (str.length % 4 !== 0) {
-    str = str + '='
+  if (q != null) {
+    r.drShiftTo(ys, q)
+    if (ts != ms) BigInteger.ZERO.subTo(q, q)
   }
-  return str
+  r.t = ys
+  r.clamp()
+  if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder
+  if (ts < 0) BigInteger.ZERO.subTo(r, r)
 }
 
-function toHex (n) {
-  if (n < 16) return '0' + n.toString(16)
-  return n.toString(16)
+// (public) this mod a
+function bnMod(a) {
+  var r = new BigInteger()
+  this.abs()
+    .divRemTo(a, null, r)
+  if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r)
+  return r
 }
 
-function utf8ToBytes (string, units) {
-  units = units || Infinity
-  var codePoint
-  var length = string.length
-  var leadSurrogate = null
-  var bytes = []
-
-  for (var i = 0; i < length; ++i) {
-    codePoint = string.charCodeAt(i)
-
-    // is surrogate component
-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
-      // last char was a lead
-      if (!leadSurrogate) {
-        // no lead yet
-        if (codePoint > 0xDBFF) {
-          // unexpected trail
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        } else if (i + 1 === length) {
-          // unpaired lead
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        }
+// Modular reduction using "classic" algorithm
+function Classic(m) {
+  this.m = m
+}
 
-        // valid lead
-        leadSurrogate = codePoint
+function cConvert(x) {
+  if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m)
+  else return x
+}
 
-        continue
-      }
+function cRevert(x) {
+  return x
+}
 
-      // 2 leads in a row
-      if (codePoint < 0xDC00) {
-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-        leadSurrogate = codePoint
-        continue
-      }
+function cReduce(x) {
+  x.divRemTo(this.m, null, x)
+}
 
-      // valid surrogate pair
-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
-    } else if (leadSurrogate) {
-      // valid bmp char, but last char was a lead
-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-    }
+function cMulTo(x, y, r) {
+  x.multiplyTo(y, r)
+  this.reduce(r)
+}
 
-    leadSurrogate = null
+function cSqrTo(x, r) {
+  x.squareTo(r)
+  this.reduce(r)
+}
 
-    // encode utf8
-    if (codePoint < 0x80) {
-      if ((units -= 1) < 0) break
-      bytes.push(codePoint)
-    } else if (codePoint < 0x800) {
-      if ((units -= 2) < 0) break
-      bytes.push(
-        codePoint >> 0x6 | 0xC0,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x10000) {
-      if ((units -= 3) < 0) break
-      bytes.push(
-        codePoint >> 0xC | 0xE0,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x110000) {
-      if ((units -= 4) < 0) break
-      bytes.push(
-        codePoint >> 0x12 | 0xF0,
-        codePoint >> 0xC & 0x3F | 0x80,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else {
-      throw new Error('Invalid code point')
-    }
-  }
+Classic.prototype.convert = cConvert
+Classic.prototype.revert = cRevert
+Classic.prototype.reduce = cReduce
+Classic.prototype.mulTo = cMulTo
+Classic.prototype.sqrTo = cSqrTo
 
-  return bytes
+// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
+// justification:
+//         xy == 1 (mod m)
+//         xy =  1+km
+//   xy(2-xy) = (1+km)(1-km)
+// x[y(2-xy)] = 1-k^2m^2
+// x[y(2-xy)] == 1 (mod m^2)
+// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
+// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
+// JS multiply "overflows" differently from C/C++, so care is needed here.
+function bnpInvDigit() {
+  if (this.t < 1) return 0
+  var x = this[0]
+  if ((x & 1) == 0) return 0
+  var y = x & 3; // y == 1/x mod 2^2
+  y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4
+  y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8
+  y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16
+  // last step - calculate inverse mod DV directly
+  // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
+  y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits
+  // we really want the negative inverse, and -DV < y < DV
+  return (y > 0) ? this.DV - y : -y
 }
 
-function asciiToBytes (str) {
-  var byteArray = []
-  for (var i = 0; i < str.length; ++i) {
-    // Node's code seems to be doing this and not & 0x7F..
-    byteArray.push(str.charCodeAt(i) & 0xFF)
-  }
-  return byteArray
+// Montgomery reduction
+function Montgomery(m) {
+  this.m = m
+  this.mp = m.invDigit()
+  this.mpl = this.mp & 0x7fff
+  this.mph = this.mp >> 15
+  this.um = (1 << (m.DB - 15)) - 1
+  this.mt2 = 2 * m.t
 }
 
-function utf16leToBytes (str, units) {
-  var c, hi, lo
-  var byteArray = []
-  for (var i = 0; i < str.length; ++i) {
-    if ((units -= 2) < 0) break
-
-    c = str.charCodeAt(i)
-    hi = c >> 8
-    lo = c % 256
-    byteArray.push(lo)
-    byteArray.push(hi)
-  }
-
-  return byteArray
+// xR mod m
+function montConvert(x) {
+  var r = new BigInteger()
+  x.abs()
+    .dlShiftTo(this.m.t, r)
+  r.divRemTo(this.m, null, r)
+  if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r)
+  return r
 }
 
-function base64ToBytes (str) {
-  return base64.toByteArray(base64clean(str))
+// x/R mod m
+function montRevert(x) {
+  var r = new BigInteger()
+  x.copyTo(r)
+  this.reduce(r)
+  return r
 }
 
-function blitBuffer (src, dst, offset, length) {
-  for (var i = 0; i < length; ++i) {
-    if ((i + offset >= dst.length) || (i >= src.length)) break
-    dst[i + offset] = src[i]
+// x = x/R mod m (HAC 14.32)
+function montReduce(x) {
+  while (x.t <= this.mt2) // pad x so am has enough room later
+    x[x.t++] = 0
+  for (var i = 0; i < this.m.t; ++i) {
+    // faster way of calculating u0 = x[i]*mp mod DV
+    var j = x[i] & 0x7fff
+    var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM
+    // use am to combine the multiply-shift-add into one call
+    j = i + this.m.t
+    x[j] += this.m.am(0, u0, x, i, 0, this.m.t)
+    // propagate carry
+    while (x[j] >= x.DV) {
+      x[j] -= x.DV
+      x[++j]++
+    }
   }
-  return i
+  x.clamp()
+  x.drShiftTo(this.m.t, x)
+  if (x.compareTo(this.m) >= 0) x.subTo(this.m, x)
 }
 
-// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
-function isArrayBufferView (obj) {
-  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+// r = "x^2/R mod m"; x != r
+function montSqrTo(x, r) {
+  x.squareTo(r)
+  this.reduce(r)
 }
 
-function numberIsNaN (obj) {
-  return obj !== obj // eslint-disable-line no-self-compare
+// r = "xy/R mod m"; x,y != r
+function montMulTo(x, y, r) {
+  x.multiplyTo(y, r)
+  this.reduce(r)
 }
 
-},{"base64-js":1,"ieee754":3}],3:[function(require,module,exports){
-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
-  var e, m
-  var eLen = nBytes * 8 - mLen - 1
-  var eMax = (1 << eLen) - 1
-  var eBias = eMax >> 1
-  var nBits = -7
-  var i = isLE ? (nBytes - 1) : 0
-  var d = isLE ? -1 : 1
-  var s = buffer[offset + i]
-
-  i += d
-
-  e = s & ((1 << (-nBits)) - 1)
-  s >>= (-nBits)
-  nBits += eLen
-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+Montgomery.prototype.convert = montConvert
+Montgomery.prototype.revert = montRevert
+Montgomery.prototype.reduce = montReduce
+Montgomery.prototype.mulTo = montMulTo
+Montgomery.prototype.sqrTo = montSqrTo
 
-  m = e & ((1 << (-nBits)) - 1)
-  e >>= (-nBits)
-  nBits += mLen
-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+// (protected) true iff this is even
+function bnpIsEven() {
+  return ((this.t > 0) ? (this[0] & 1) : this.s) == 0
+}
 
-  if (e === 0) {
-    e = 1 - eBias
-  } else if (e === eMax) {
-    return m ? NaN : ((s ? -1 : 1) * Infinity)
-  } else {
-    m = m + Math.pow(2, mLen)
-    e = e - eBias
+// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
+function bnpExp(e, z) {
+  if (e > 0xffffffff || e < 1) return BigInteger.ONE
+  var r = new BigInteger(),
+    r2 = new BigInteger(),
+    g = z.convert(this),
+    i = nbits(e) - 1
+  g.copyTo(r)
+  while (--i >= 0) {
+    z.sqrTo(r, r2)
+    if ((e & (1 << i)) > 0) z.mulTo(r2, g, r)
+    else {
+      var t = r
+      r = r2
+      r2 = t
+    }
   }
-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+  return z.revert(r)
 }
 
-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
-  var e, m, c
-  var eLen = nBytes * 8 - mLen - 1
-  var eMax = (1 << eLen) - 1
-  var eBias = eMax >> 1
-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
-  var i = isLE ? 0 : (nBytes - 1)
-  var d = isLE ? 1 : -1
-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
-
-  value = Math.abs(value)
-
-  if (isNaN(value) || value === Infinity) {
-    m = isNaN(value) ? 1 : 0
-    e = eMax
-  } else {
-    e = Math.floor(Math.log(value) / Math.LN2)
-    if (value * (c = Math.pow(2, -e)) < 1) {
-      e--
-      c *= 2
-    }
-    if (e + eBias >= 1) {
-      value += rt / c
-    } else {
-      value += rt * Math.pow(2, 1 - eBias)
-    }
-    if (value * c >= 2) {
-      e++
-      c /= 2
-    }
+// (public) this^e % m, 0 <= e < 2^32
+function bnModPowInt(e, m) {
+  var z
+  if (e < 256 || m.isEven()) z = new Classic(m)
+  else z = new Montgomery(m)
+  return this.exp(e, z)
+}
 
-    if (e + eBias >= eMax) {
-      m = 0
-      e = eMax
-    } else if (e + eBias >= 1) {
-      m = (value * c - 1) * Math.pow(2, mLen)
-      e = e + eBias
-    } else {
-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
-      e = 0
-    }
-  }
+// protected
+proto.copyTo = bnpCopyTo
+proto.fromInt = bnpFromInt
+proto.fromString = bnpFromString
+proto.clamp = bnpClamp
+proto.dlShiftTo = bnpDLShiftTo
+proto.drShiftTo = bnpDRShiftTo
+proto.lShiftTo = bnpLShiftTo
+proto.rShiftTo = bnpRShiftTo
+proto.subTo = bnpSubTo
+proto.multiplyTo = bnpMultiplyTo
+proto.squareTo = bnpSquareTo
+proto.divRemTo = bnpDivRemTo
+proto.invDigit = bnpInvDigit
+proto.isEven = bnpIsEven
+proto.exp = bnpExp
 
-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+// public
+proto.toString = bnToString
+proto.negate = bnNegate
+proto.abs = bnAbs
+proto.compareTo = bnCompareTo
+proto.bitLength = bnBitLength
+proto.byteLength = bnByteLength
+proto.mod = bnMod
+proto.modPowInt = bnModPowInt
 
-  e = (e << mLen) | m
-  eLen += mLen
-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+// (public)
+function bnClone() {
+  var r = new BigInteger()
+  this.copyTo(r)
+  return r
+}
 
-  buffer[offset + i - d] |= s * 128
+// (public) return value as integer
+function bnIntValue() {
+  if (this.s < 0) {
+    if (this.t == 1) return this[0] - this.DV
+    else if (this.t == 0) return -1
+  } else if (this.t == 1) return this[0]
+  else if (this.t == 0) return 0
+  // assumes 16 < DB < 32
+  return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0]
 }
 
-},{}],4:[function(require,module,exports){
-window.basex = require('base-x')
-},{"base-x":5}],5:[function(require,module,exports){
-// base-x encoding
-// Forked from https://github.com/cryptocoinjs/bs58
-// Originally written by Mike Hearn for BitcoinJ
-// Copyright (c) 2011 Google Inc
-// Ported to JavaScript by Stefan Thomas
-// Merged Buffer refactorings from base58-native by Stephen Pair
-// Copyright (c) 2013 BitPay Inc
+// (public) return value as byte
+function bnByteValue() {
+  return (this.t == 0) ? this.s : (this[0] << 24) >> 24
+}
 
-var Buffer = require('safe-buffer').Buffer
+// (public) return value as short (assumes DB>=16)
+function bnShortValue() {
+  return (this.t == 0) ? this.s : (this[0] << 16) >> 16
+}
 
-module.exports = function base (ALPHABET) {
-  var ALPHABET_MAP = {}
-  var BASE = ALPHABET.length
-  var LEADER = ALPHABET.charAt(0)
+// (protected) return x s.t. r^x < DV
+function bnpChunkSize(r) {
+  return Math.floor(Math.LN2 * this.DB / Math.log(r))
+}
 
-  // pre-compute lookup table
-  for (var z = 0; z < ALPHABET.length; z++) {
-    var x = ALPHABET.charAt(z)
+// (public) 0 if this == 0, 1 if this > 0
+function bnSigNum() {
+  if (this.s < 0) return -1
+  else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0
+  else return 1
+}
 
-    if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
-    ALPHABET_MAP[x] = z
+// (protected) convert to radix string
+function bnpToRadix(b) {
+  if (b == null) b = 10
+  if (this.signum() == 0 || b < 2 || b > 36) return "0"
+  var cs = this.chunkSize(b)
+  var a = Math.pow(b, cs)
+  var d = nbv(a),
+    y = new BigInteger(),
+    z = new BigInteger(),
+    r = ""
+  this.divRemTo(d, y, z)
+  while (y.signum() > 0) {
+    r = (a + z.intValue())
+      .toString(b)
+      .substr(1) + r
+    y.divRemTo(d, y, z)
   }
+  return z.intValue()
+    .toString(b) + r
+}
 
-  function encode (source) {
-    if (source.length === 0) return ''
+// (protected) convert from radix string
+function bnpFromRadix(s, b) {
+  var self = this
+  self.fromInt(0)
+  if (b == null) b = 10
+  var cs = self.chunkSize(b)
+  var d = Math.pow(b, cs),
+    mi = false,
+    j = 0,
+    w = 0
+  for (var i = 0; i < s.length; ++i) {
+    var x = intAt(s, i)
+    if (x < 0) {
+      if (s.charAt(i) == "-" && self.signum() == 0) mi = true
+      continue
+    }
+    w = b * w + x
+    if (++j >= cs) {
+      self.dMultiply(d)
+      self.dAddOffset(w, 0)
+      j = 0
+      w = 0
+    }
+  }
+  if (j > 0) {
+    self.dMultiply(Math.pow(b, j))
+    self.dAddOffset(w, 0)
+  }
+  if (mi) BigInteger.ZERO.subTo(self, self)
+}
 
-    var digits = [0]
-    for (var i = 0; i < source.length; ++i) {
-      for (var j = 0, carry = source[i]; j < digits.length; ++j) {
-        carry += digits[j] << 8
-        digits[j] = carry % BASE
-        carry = (carry / BASE) | 0
+// (protected) alternate constructor
+function bnpFromNumber(a, b, c) {
+  var self = this
+  if ("number" == typeof b) {
+    // new BigInteger(int,int,RNG)
+    if (a < 2) self.fromInt(1)
+    else {
+      self.fromNumber(a, c)
+      if (!self.testBit(a - 1)) // force MSB set
+        self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self)
+      if (self.isEven()) self.dAddOffset(1, 0); // force odd
+      while (!self.isProbablePrime(b)) {
+        self.dAddOffset(2, 0)
+        if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self)
       }
+    }
+  } else {
+    // new BigInteger(int,RNG)
+    var x = new Array(),
+      t = a & 7
+    x.length = (a >> 3) + 1
+    b.nextBytes(x)
+    if (t > 0) x[0] &= ((1 << t) - 1)
+    else x[0] = 0
+    self.fromString(x, 256)
+  }
+}
 
-      while (carry > 0) {
-        digits.push(carry % BASE)
-        carry = (carry / BASE) | 0
+// (public) convert to bigendian byte array
+function bnToByteArray() {
+  var self = this
+  var i = self.t,
+    r = new Array()
+  r[0] = self.s
+  var p = self.DB - (i * self.DB) % 8,
+    d, k = 0
+  if (i-- > 0) {
+    if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p)
+      r[k++] = d | (self.s << (self.DB - p))
+    while (i >= 0) {
+      if (p < 8) {
+        d = (self[i] & ((1 << p) - 1)) << (8 - p)
+        d |= self[--i] >> (p += self.DB - 8)
+      } else {
+        d = (self[i] >> (p -= 8)) & 0xff
+        if (p <= 0) {
+          p += self.DB
+          --i
+        }
       }
+      if ((d & 0x80) != 0) d |= -256
+      if (k === 0 && (self.s & 0x80) != (d & 0x80))++k
+      if (k > 0 || d != self.s) r[k++] = d
     }
-
-    var string = ''
-
-    // deal with leading zeros
-    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0]
-    // convert digits to a string
-    for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
-
-    return string
   }
+  return r
+}
 
-  function decodeUnsafe (string) {
-    if (string.length === 0) return Buffer.allocUnsafe(0)
+function bnEquals(a) {
+  return (this.compareTo(a) == 0)
+}
 
-    var bytes = [0]
-    for (var i = 0; i < string.length; i++) {
-      var value = ALPHABET_MAP[string[i]]
-      if (value === undefined) return
+function bnMin(a) {
+  return (this.compareTo(a) < 0) ? this : a
+}
 
-      for (var j = 0, carry = value; j < bytes.length; ++j) {
-        carry += bytes[j] * BASE
-        bytes[j] = carry & 0xff
-        carry >>= 8
-      }
+function bnMax(a) {
+  return (this.compareTo(a) > 0) ? this : a
+}
 
-      while (carry > 0) {
-        bytes.push(carry & 0xff)
-        carry >>= 8
-      }
-    }
+// (protected) r = this op a (bitwise)
+function bnpBitwiseTo(a, op, r) {
+  var self = this
+  var i, f, m = Math.min(a.t, self.t)
+  for (i = 0; i < m; ++i) r[i] = op(self[i], a[i])
+  if (a.t < self.t) {
+    f = a.s & self.DM
+    for (i = m; i < self.t; ++i) r[i] = op(self[i], f)
+    r.t = self.t
+  } else {
+    f = self.s & self.DM
+    for (i = m; i < a.t; ++i) r[i] = op(f, a[i])
+    r.t = a.t
+  }
+  r.s = op(self.s, a.s)
+  r.clamp()
+}
 
-    // deal with leading zeros
-    for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
-      bytes.push(0)
-    }
+// (public) this & a
+function op_and(x, y) {
+  return x & y
+}
 
-    return Buffer.from(bytes.reverse())
-  }
+function bnAnd(a) {
+  var r = new BigInteger()
+  this.bitwiseTo(a, op_and, r)
+  return r
+}
 
-  function decode (string) {
-    var buffer = decodeUnsafe(string)
-    if (buffer) return buffer
+// (public) this | a
+function op_or(x, y) {
+  return x | y
+}
 
-    throw new Error('Non-base' + BASE + ' character')
-  }
+function bnOr(a) {
+  var r = new BigInteger()
+  this.bitwiseTo(a, op_or, r)
+  return r
+}
 
-  return {
-    encode: encode,
-    decodeUnsafe: decodeUnsafe,
-    decode: decode
-  }
+// (public) this ^ a
+function op_xor(x, y) {
+  return x ^ y
 }
 
-},{"safe-buffer":6}],6:[function(require,module,exports){
-module.exports = require('buffer')
+function bnXor(a) {
+  var r = new BigInteger()
+  this.bitwiseTo(a, op_xor, r)
+  return r
+}
 
-},{"buffer":2}]},{},[4])(4)
-});</script>
-        <script>(function (root) {
-   "use strict";
+// (public) this & ~a
+function op_andnot(x, y) {
+  return x & ~y
+}
 
-/***** unorm.js *****/
+function bnAndNot(a) {
+  var r = new BigInteger()
+  this.bitwiseTo(a, op_andnot, r)
+  return r
+}
 
-/*
- * UnicodeNormalizer 1.0.0
- * Copyright (c) 2008 Matsuza
- * Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.
- * $Date: 2008-06-05 16:44:17 +0200 (Thu, 05 Jun 2008) $
- * $Rev: 13309 $
- */
+// (public) ~this
+function bnNot() {
+  var r = new BigInteger()
+  for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i]
+  r.t = this.t
+  r.s = ~this.s
+  return r
+}
 
-   var DEFAULT_FEATURE = [null, 0, {}];
-   var CACHE_THRESHOLD = 10;
-   var SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161, TBase = 0x11A7, LCount = 19, VCount = 21, TCount = 28;
-   var NCount = VCount * TCount; // 588
-   var SCount = LCount * NCount; // 11172
+// (public) this << n
+function bnShiftLeft(n) {
+  var r = new BigInteger()
+  if (n < 0) this.rShiftTo(-n, r)
+  else this.lShiftTo(n, r)
+  return r
+}
 
-   var UChar = function(cp, feature){
-      this.codepoint = cp;
-      this.feature = feature;
-   };
+// (public) this >> n
+function bnShiftRight(n) {
+  var r = new BigInteger()
+  if (n < 0) this.lShiftTo(-n, r)
+  else this.rShiftTo(n, r)
+  return r
+}
 
-   // Strategies
-   var cache = {};
-   var cacheCounter = [];
-   for (var i = 0; i <= 0xFF; ++i){
-      cacheCounter[i] = 0;
-   }
+// return index of lowest 1-bit in x, x < 2^31
+function lbit(x) {
+  if (x == 0) return -1
+  var r = 0
+  if ((x & 0xffff) == 0) {
+    x >>= 16
+    r += 16
+  }
+  if ((x & 0xff) == 0) {
+    x >>= 8
+    r += 8
+  }
+  if ((x & 0xf) == 0) {
+    x >>= 4
+    r += 4
+  }
+  if ((x & 3) == 0) {
+    x >>= 2
+    r += 2
+  }
+  if ((x & 1) == 0)++r
+  return r
+}
 
-   function fromCache(next, cp, needFeature){
-      var ret = cache[cp];
-      if(!ret){
-         ret = next(cp, needFeature);
-         if(!!ret.feature && ++cacheCounter[(cp >> 8) & 0xFF] > CACHE_THRESHOLD){
-            cache[cp] = ret;
-         }
-      }
-      return ret;
-   }
+// (public) returns index of lowest 1-bit (or -1 if none)
+function bnGetLowestSetBit() {
+  for (var i = 0; i < this.t; ++i)
+    if (this[i] != 0) return i * this.DB + lbit(this[i])
+  if (this.s < 0) return this.t * this.DB
+  return -1
+}
 
-   function fromData(next, cp, needFeature){
-      var hash = cp & 0xFF00;
-      var dunit = UChar.udata[hash] || {};
-      var f = dunit[cp];
-      return f ? new UChar(cp, f) : new UChar(cp, DEFAULT_FEATURE);
-   }
-   function fromCpOnly(next, cp, needFeature){
-      return !!needFeature ? next(cp, needFeature) : new UChar(cp, null);
-   }
-   function fromRuleBasedJamo(next, cp, needFeature){
-      var j;
-      if(cp < LBase || (LBase + LCount <= cp && cp < SBase) || (SBase + SCount < cp)){
-         return next(cp, needFeature);
-      }
-      if(LBase <= cp && cp < LBase + LCount){
-         var c = {};
-         var base = (cp - LBase) * VCount;
-         for (j = 0; j < VCount; ++j){
-            c[VBase + j] = SBase + TCount * (j + base);
-         }
-         return new UChar(cp, [,,c]);
-      }
+// return number of 1 bits in x
+function cbit(x) {
+  var r = 0
+  while (x != 0) {
+    x &= x - 1
+    ++r
+  }
+  return r
+}
 
-      var SIndex = cp - SBase;
-      var TIndex = SIndex % TCount;
-      var feature = [];
-      if(TIndex !== 0){
-         feature[0] = [SBase + SIndex - TIndex, TBase + TIndex];
-      } else {
-         feature[0] = [LBase + Math.floor(SIndex / NCount), VBase + Math.floor((SIndex % NCount) / TCount)];
-         feature[2] = {};
-         for (j = 1; j < TCount; ++j){
-            feature[2][TBase + j] = cp + j;
-         }
-      }
-      return new UChar(cp, feature);
-   }
-   function fromCpFilter(next, cp, needFeature){
-      return cp < 60 || 13311 < cp && cp < 42607 ? new UChar(cp, DEFAULT_FEATURE) : next(cp, needFeature);
-   }
+// (public) return number of set bits
+function bnBitCount() {
+  var r = 0,
+    x = this.s & this.DM
+  for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x)
+  return r
+}
 
-   var strategies = [fromCpFilter, fromCache, fromCpOnly, fromRuleBasedJamo, fromData];
+// (public) true iff nth bit is set
+function bnTestBit(n) {
+  var j = Math.floor(n / this.DB)
+  if (j >= this.t) return (this.s != 0)
+  return ((this[j] & (1 << (n % this.DB))) != 0)
+}
 
-   UChar.fromCharCode = strategies.reduceRight(function (next, strategy) {
-      return function (cp, needFeature) {
-         return strategy(next, cp, needFeature);
-      };
-   }, null);
+// (protected) this op (1<<n)
+function bnpChangeBit(n, op) {
+  var r = BigInteger.ONE.shiftLeft(n)
+  this.bitwiseTo(r, op, r)
+  return r
+}
 
-   UChar.isHighSurrogate = function(cp){
-      return cp >= 0xD800 && cp <= 0xDBFF;
-   };
-   UChar.isLowSurrogate = function(cp){
-      return cp >= 0xDC00 && cp <= 0xDFFF;
-   };
+// (public) this | (1<<n)
+function bnSetBit(n) {
+  return this.changeBit(n, op_or)
+}
 
-   UChar.prototype.prepFeature = function(){
-      if(!this.feature){
-         this.feature = UChar.fromCharCode(this.codepoint, true).feature;
-      }
-   };
+// (public) this & ~(1<<n)
+function bnClearBit(n) {
+  return this.changeBit(n, op_andnot)
+}
 
-   UChar.prototype.toString = function(){
-      if(this.codepoint < 0x10000){
-         return String.fromCharCode(this.codepoint);
-      } else {
-         var x = this.codepoint - 0x10000;
-         return String.fromCharCode(Math.floor(x / 0x400) + 0xD800, x % 0x400 + 0xDC00);
-      }
-   };
+// (public) this ^ (1<<n)
+function bnFlipBit(n) {
+  return this.changeBit(n, op_xor)
+}
 
-   UChar.prototype.getDecomp = function(){
-      this.prepFeature();
-      return this.feature[0] || null;
-   };
+// (protected) r = this + a
+function bnpAddTo(a, r) {
+  var self = this
 
-   UChar.prototype.isCompatibility = function(){
-      this.prepFeature();
-      return !!this.feature[1] && (this.feature[1] & (1 << 8));
-   };
-   UChar.prototype.isExclude = function(){
-      this.prepFeature();
-      return !!this.feature[1] && (this.feature[1] & (1 << 9));
-   };
-   UChar.prototype.getCanonicalClass = function(){
-      this.prepFeature();
-      return !!this.feature[1] ? (this.feature[1] & 0xff) : 0;
-   };
-   UChar.prototype.getComposite = function(following){
-      this.prepFeature();
-      if(!this.feature[2]){
-         return null;
-      }
-      var cp = this.feature[2][following.codepoint];
-      return cp ? UChar.fromCharCode(cp) : null;
-   };
+  var i = 0,
+    c = 0,
+    m = Math.min(a.t, self.t)
+  while (i < m) {
+    c += self[i] + a[i]
+    r[i++] = c & self.DM
+    c >>= self.DB
+  }
+  if (a.t < self.t) {
+    c += a.s
+    while (i < self.t) {
+      c += self[i]
+      r[i++] = c & self.DM
+      c >>= self.DB
+    }
+    c += self.s
+  } else {
+    c += self.s
+    while (i < a.t) {
+      c += a[i]
+      r[i++] = c & self.DM
+      c >>= self.DB
+    }
+    c += a.s
+  }
+  r.s = (c < 0) ? -1 : 0
+  if (c > 0) r[i++] = c
+  else if (c < -1) r[i++] = self.DV + c
+  r.t = i
+  r.clamp()
+}
 
-   var UCharIterator = function(str){
-      this.str = str;
-      this.cursor = 0;
-   };
-   UCharIterator.prototype.next = function(){
-      if(!!this.str && this.cursor < this.str.length){
-         var cp = this.str.charCodeAt(this.cursor++);
-         var d;
-         if(UChar.isHighSurrogate(cp) && this.cursor < this.str.length && UChar.isLowSurrogate((d = this.str.charCodeAt(this.cursor)))){
-            cp = (cp - 0xD800) * 0x400 + (d -0xDC00) + 0x10000;
-            ++this.cursor;
-         }
-         return UChar.fromCharCode(cp);
-      } else {
-         this.str = null;
-         return null;
-      }
-   };
+// (public) this + a
+function bnAdd(a) {
+  var r = new BigInteger()
+  this.addTo(a, r)
+  return r
+}
 
-   var RecursDecompIterator = function(it, cano){
-      this.it = it;
-      this.canonical = cano;
-      this.resBuf = [];
-   };
+// (public) this - a
+function bnSubtract(a) {
+  var r = new BigInteger()
+  this.subTo(a, r)
+  return r
+}
 
-   RecursDecompIterator.prototype.next = function(){
-      function recursiveDecomp(cano, uchar){
-         var decomp = uchar.getDecomp();
-         if(!!decomp && !(cano && uchar.isCompatibility())){
-            var ret = [];
-            for(var i = 0; i < decomp.length; ++i){
-               var a = recursiveDecomp(cano, UChar.fromCharCode(decomp[i]));
-                ret = ret.concat(a);
-            }
-            return ret;
-         } else {
-            return [uchar];
-         }
-      }
-      if(this.resBuf.length === 0){
-         var uchar = this.it.next();
-         if(!uchar){
-            return null;
-         }
-         this.resBuf = recursiveDecomp(this.canonical, uchar);
-      }
-      return this.resBuf.shift();
-   };
+// (public) this * a
+function bnMultiply(a) {
+  var r = new BigInteger()
+  this.multiplyTo(a, r)
+  return r
+}
 
-   var DecompIterator = function(it){
-      this.it = it;
-      this.resBuf = [];
-   };
+// (public) this^2
+function bnSquare() {
+  var r = new BigInteger()
+  this.squareTo(r)
+  return r
+}
 
-   DecompIterator.prototype.next = function(){
-      var cc;
-      if(this.resBuf.length === 0){
-         do{
-            var uchar = this.it.next();
-            if(!uchar){
-               break;
-            }
-            cc = uchar.getCanonicalClass();
-            var inspt = this.resBuf.length;
-            if(cc !== 0){
-               for(; inspt > 0; --inspt){
-                  var uchar2 = this.resBuf[inspt - 1];
-                  var cc2 = uchar2.getCanonicalClass();
-                  if(cc2 <= cc){
-                     break;
-                  }
-               }
-            }
-            this.resBuf.splice(inspt, 0, uchar);
-         } while(cc !== 0);
-      }
-      return this.resBuf.shift();
-   };
+// (public) this / a
+function bnDivide(a) {
+  var r = new BigInteger()
+  this.divRemTo(a, r, null)
+  return r
+}
 
-   var CompIterator = function(it){
-      this.it = it;
-      this.procBuf = [];
-      this.resBuf = [];
-      this.lastClass = null;
-   };
+// (public) this % a
+function bnRemainder(a) {
+  var r = new BigInteger()
+  this.divRemTo(a, null, r)
+  return r
+}
 
-   CompIterator.prototype.next = function(){
-      while(this.resBuf.length === 0){
-         var uchar = this.it.next();
-         if(!uchar){
-            this.resBuf = this.procBuf;
-            this.procBuf = [];
-            break;
-         }
-         if(this.procBuf.length === 0){
-            this.lastClass = uchar.getCanonicalClass();
-            this.procBuf.push(uchar);
-         } else {
-            var starter = this.procBuf[0];
-            var composite = starter.getComposite(uchar);
-            var cc = uchar.getCanonicalClass();
-            if(!!composite && (this.lastClass < cc || this.lastClass === 0)){
-               this.procBuf[0] = composite;
-            } else {
-               if(cc === 0){
-                  this.resBuf = this.procBuf;
-                  this.procBuf = [];
-               }
-               this.lastClass = cc;
-               this.procBuf.push(uchar);
-            }
-         }
-      }
-      return this.resBuf.shift();
-   };
+// (public) [this/a,this%a]
+function bnDivideAndRemainder(a) {
+  var q = new BigInteger(),
+    r = new BigInteger()
+  this.divRemTo(a, q, r)
+  return new Array(q, r)
+}
 
-   var createIterator = function(mode, str){
-      switch(mode){
-         case "NFD":
-            return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true));
-         case "NFKD":
-            return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false));
-         case "NFC":
-            return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true)));
-         case "NFKC":
-            return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false)));
-      }
-      throw mode + " is invalid";
-   };
-   var normalize = function(mode, str){
-      var it = createIterator(mode, str);
-      var ret = "";
-      var uchar;
-      while(!!(uchar = it.next())){
-         ret += uchar.toString();
-      }
-      return ret;
-   };
+// (protected) this *= n, this >= 0, 1 < n < DV
+function bnpDMultiply(n) {
+  this[this.t] = this.am(0, n - 1, this, 0, 0, this.t)
+  ++this.t
+  this.clamp()
+}
 
-   /* API functions */
-   function nfd(str){
-      return normalize("NFD", str);
-   }
+// (protected) this += n << w words, this >= 0
+function bnpDAddOffset(n, w) {
+  if (n == 0) return
+  while (this.t <= w) this[this.t++] = 0
+  this[w] += n
+  while (this[w] >= this.DV) {
+    this[w] -= this.DV
+    if (++w >= this.t) this[this.t++] = 0
+    ++this[w]
+  }
+}
 
-   function nfkd(str){
-      return normalize("NFKD", str);
-   }
+// A "null" reducer
+function NullExp() {}
 
-   function nfc(str){
-      return normalize("NFC", str);
-   }
+function nNop(x) {
+  return x
+}
 
-   function nfkc(str){
-      return normalize("NFKC", str);
-   }
+function nMulTo(x, y, r) {
+  x.multiplyTo(y, r)
+}
 
-/* Unicode data */
-UChar.udata={
-0:{60:[,,{824:8814}],61:[,,{824:8800}],62:[,,{824:8815}],65:[,,{768:192,769:193,770:194,771:195,772:256,774:258,775:550,776:196,777:7842,778:197,780:461,783:512,785:514,803:7840,805:7680,808:260}],66:[,,{775:7682,803:7684,817:7686}],67:[,,{769:262,770:264,775:266,780:268,807:199}],68:[,,{775:7690,780:270,803:7692,807:7696,813:7698,817:7694}],69:[,,{768:200,769:201,770:202,771:7868,772:274,774:276,775:278,776:203,777:7866,780:282,783:516,785:518,803:7864,807:552,808:280,813:7704,816:7706}],70:[,,{775:7710}],71:[,,{769:500,770:284,772:7712,774:286,775:288,780:486,807:290}],72:[,,{770:292,775:7714,776:7718,780:542,803:7716,807:7720,814:7722}],73:[,,{768:204,769:205,770:206,771:296,772:298,774:300,775:304,776:207,777:7880,780:463,783:520,785:522,803:7882,808:302,816:7724}],74:[,,{770:308}],75:[,,{769:7728,780:488,803:7730,807:310,817:7732}],76:[,,{769:313,780:317,803:7734,807:315,813:7740,817:7738}],77:[,,{769:7742,775:7744,803:7746}],78:[,,{768:504,769:323,771:209,775:7748,780:327,803:7750,807:325,813:7754,817:7752}],79:[,,{768:210,769:211,770:212,771:213,772:332,774:334,775:558,776:214,777:7886,779:336,780:465,783:524,785:526,795:416,803:7884,808:490}],80:[,,{769:7764,775:7766}],82:[,,{769:340,775:7768,780:344,783:528,785:530,803:7770,807:342,817:7774}],83:[,,{769:346,770:348,775:7776,780:352,803:7778,806:536,807:350}],84:[,,{775:7786,780:356,803:7788,806:538,807:354,813:7792,817:7790}],85:[,,{768:217,769:218,770:219,771:360,772:362,774:364,776:220,777:7910,778:366,779:368,780:467,783:532,785:534,795:431,803:7908,804:7794,808:370,813:7798,816:7796}],86:[,,{771:7804,803:7806}],87:[,,{768:7808,769:7810,770:372,775:7814,776:7812,803:7816}],88:[,,{775:7818,776:7820}],89:[,,{768:7922,769:221,770:374,771:7928,772:562,775:7822,776:376,777:7926,803:7924}],90:[,,{769:377,770:7824,775:379,780:381,803:7826,817:7828}],97:[,,{768:224,769:225,770:226,771:227,772:257,774:259,775:551,776:228,777:7843,778:229,780:462,783:513,785:515,803:7841,805:7681,808:261}],98:[,,{775:7683,803:7685,817:7687}],99:[,,{769:263,770:265,775:267,780:269,807:231}],100:[,,{775:7691,780:271,803:7693,807:7697,813:7699,817:7695}],101:[,,{768:232,769:233,770:234,771:7869,772:275,774:277,775:279,776:235,777:7867,780:283,783:517,785:519,803:7865,807:553,808:281,813:7705,816:7707}],102:[,,{775:7711}],103:[,,{769:501,770:285,772:7713,774:287,775:289,780:487,807:291}],104:[,,{770:293,775:7715,776:7719,780:543,803:7717,807:7721,814:7723,817:7830}],105:[,,{768:236,769:237,770:238,771:297,772:299,774:301,776:239,777:7881,780:464,783:521,785:523,803:7883,808:303,816:7725}],106:[,,{770:309,780:496}],107:[,,{769:7729,780:489,803:7731,807:311,817:7733}],108:[,,{769:314,780:318,803:7735,807:316,813:7741,817:7739}],109:[,,{769:7743,775:7745,803:7747}],110:[,,{768:505,769:324,771:241,775:7749,780:328,803:7751,807:326,813:7755,817:7753}],111:[,,{768:242,769:243,770:244,771:245,772:333,774:335,775:559,776:246,777:7887,779:337,780:466,783:525,785:527,795:417,803:7885,808:491}],112:[,,{769:7765,775:7767}],114:[,,{769:341,775:7769,780:345,783:529,785:531,803:7771,807:343,817:7775}],115:[,,{769:347,770:349,775:7777,780:353,803:7779,806:537,807:351}],116:[,,{775:7787,776:7831,780:357,803:7789,806:539,807:355,813:7793,817:7791}],117:[,,{768:249,769:250,770:251,771:361,772:363,774:365,776:252,777:7911,778:367,779:369,780:468,783:533,785:535,795:432,803:7909,804:7795,808:371,813:7799,816:7797}],118:[,,{771:7805,803:7807}],119:[,,{768:7809,769:7811,770:373,775:7815,776:7813,778:7832,803:7817}],120:[,,{775:7819,776:7821}],121:[,,{768:7923,769:253,770:375,771:7929,772:563,775:7823,776:255,777:7927,778:7833,803:7925}],122:[,,{769:378,770:7825,775:380,780:382,803:7827,817:7829}],160:[[32],256],168:[[32,776],256,{768:8173,769:901,834:8129}],170:[[97],256],175:[[32,772],256],178:[[50],256],179:[[51],256],180:[[32,769],256],181:[[956],256],184:[[32,807],256],185:[[49],256],186:[[111],256],188:[[49,8260,52],256],189:[[49,8260,50],256],190:[[51,8260,52],256],192:[[65,768]],193:[[65,769]],194:[[65,770],,{768:7846,769:7844,771:7850,777:7848}],195:[[65,771]],196:[[65,776],,{772:478}],197:[[65,778],,{769:506}],198:[,,{769:508,772:482}],199:[[67,807],,{769:7688}],200:[[69,768]],201:[[69,769]],202:[[69,770],,{768:7872,769:7870,771:7876,777:7874}],203:[[69,776]],204:[[73,768]],205:[[73,769]],206:[[73,770]],207:[[73,776],,{769:7726}],209:[[78,771]],210:[[79,768]],211:[[79,769]],212:[[79,770],,{768:7890,769:7888,771:7894,777:7892}],213:[[79,771],,{769:7756,772:556,776:7758}],214:[[79,776],,{772:554}],216:[,,{769:510}],217:[[85,768]],218:[[85,769]],219:[[85,770]],220:[[85,776],,{768:475,769:471,772:469,780:473}],221:[[89,769]],224:[[97,768]],225:[[97,769]],226:[[97,770],,{768:7847,769:7845,771:7851,777:7849}],227:[[97,771]],228:[[97,776],,{772:479}],229:[[97,778],,{769:507}],230:[,,{769:509,772:483}],231:[[99,807],,{769:7689}],232:[[101,768]],233:[[101,769]],234:[[101,770],,{768:7873,769:7871,771:7877,777:7875}],235:[[101,776]],236:[[105,768]],237:[[105,769]],238:[[105,770]],239:[[105,776],,{76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-65024:{65040:[[44],256],65041:[[12289],256],65042:[[12290],256],65043:[[58],256],65044:[[59],256],65045:[[33],256],65046:[[63],256],65047:[[12310],256],65048:[[12311],256],65049:[[8230],256],65056:[,230],65057:[,230],65058:[,230],65059:[,230],65060:[,230],65061:[,230],65062:[,230],65063:[,220],65064:[,220],65065:[,220],65066:[,220],65067:[,220],65068:[,220],65069:[,220],65072:[[8229],256],65073:[[8212],256],65074:[[8211],256],65075:[[95],256],65076:[[95],256],65077:[[40],256],65078:[[41],256],65079:[[123],256],65080:[[125],256],65081:[[12308],256],65082:[[12309],256],65083:[[12304],256],65084:[[12305],256],65085:[[12298],256],65086:[[12299],256],65087:[[12296],256],65088:[[12297],256],65089:[[12300],256],65090:[[12301],256],65091:[[12302],256],65092:[[12303],256],65095:[[91],256],65096:[[93],256],65097:[[8254],256],65098:[[8254],256],65099:[[8254],256],65100:[[8254],256],65101:[[95],256],65102:[[95],256],65103:[[95],256],65104:[[44],256],65105:[[12289],256],65106:[[46],256],65108:[[59],256],65109:[[58],256],65110:[[63],256],65111:[[33],256],65112:[[8212],256],65113:[[40],256],65114:[[41],256],65115:[[123],256],65116:[[125],256],65117:[[12308],256],65118:[[12309],256],65119:[[35],256],65120:[[38],256],65121:[[42],256],65122:[[43],256],65123:[[45],256],65124:[[60],256],65125:[[62],256],65126:[[61],256],65128:[[92],256],65129:[[36],256],65130:[[37],256],65131:[[64],256],65136:[[32,1611],256],65137:[[1600,1611],256],65138:[[32,1612],256],65140:[[32,1613],256],65142:[[32,1614],256],65143:[[1600,1614],256],65144:[[32,1615],256],65145:[[1600,1615],256],65146:[[32,1616],256],65147:[[1600,1616],256],65148:[[32,1617],256],65149:[[1600,1617],256],65150:[[32,1618],256],65151:[[1600,1618],256],65152:[[1569],256],65153:[[1570],256],65154:[[1570],256],65155:[[1571],256],65156:[[1571],256],65157:[[1572],256],65158:[[1572],256],65159:[[1573],256],65160:[[1573],256],65161:[[1574],256],65162:[[1574],256],65163:[[1574],256],65164:[[1574],256],65165:[[1575],256],65166:[[1575],256],65167:[[1576],256],65168:[[1576],256],65169:[[1576],256],65170:[[1576],256],65171:[[1577],256],65172:[[1577],256],65173:[[1578],256],65174:[[1578],256],65175:[[1578],256],65176:[[1578],256],65177:[[1579],256],65178:[[1579],256],65179:[[1579],256],65180:[[1579],256],65181:[[1580],256],65182:[[1580],256],65183:[[1580],256],65184:[[1580],256],65185:[[1581],256],65186:[[1581],256],65187:[[1581],256],65188:[[1581],256],65189:[[1582],256],65190:[[1582],256],65191:[[1582],256],65192:[[1582],256],65193:[[1583],256],65194:[[1583],256],65195:[[1584],256],65196:[[1584],256],65197:[[1585],256],65198:[[1585],256],65199:[[1586],256],65200:[[1586],256],65201:[[1587],256],65202:[[1587],256],65203:[[1587],256],65204:[[1587],256],65205:[[1588],256],65206:[[1588],256],65207:[[1588],256],65208:[[1588],256],65209:[[1589],256],65210:[[1589],256],65211:[[1589],256],65212:[[1589],256],65213:[[1590],256],65214:[[1590],256],65215:[[1590],256],65216:[[1590],256],65217:[[1591],256],65218:[[1591],256],65219:[[1591],256],65220:[[1591],256],65221:[[1592],256],65222:[[1592],256],65223:[[1592],256],65224:[[1592],256],65225:[[1593],256],65226:[[1593],256],65227:[[1593],256],65228:[[1593],256],65229:[[1594],256],65230:[[1594],256],65231:[[1594],256],65232:[[1594],256],65233:[[1601],256],65234:[[1601],256],65235:[[1601],256],65236:[[1601],256],65237:[[1602],256],65238:[[1602],256],65239:[[1602],256],65240:[[1602],256],65241:[[1603],256],65242:[[1603],256],65243:[[1603],256],65244:[[1603],256],65245:[[1604],256],65246:[[1604],256],65247:[[1604],256],65248:[[1604],256],65249:[[1605],256],65250:[[1605],256],65251:[[1605],256],65252:[[1605],256],65253:[[1606],256],65254:[[1606],256],65255:[[1606],256],65256:[[1606],256],65257:[[1607],256],65258:[[1607],256],65259:[[1607],256],65260:[[1607],256],65261:[[1608],256],65262:[[1608],256],65263:[[1609],256],65264:[[1609],256],65265:[[1610],256],65266:[[1610],256],65267:[[1610],256],65268:[[1610],256],65269:[[1604,1570],256],65270:[[1604,1570],256],65271:[[1604,1571],256],65272:[[1604,1571],256],65273:[[1604,1573],256],65274:[[1604,1573],256],65275:[[1604,1575],256],65276:[[1604,1575],256]},
-65280:{65281:[[33],256],65282:[[34],256],65283:[[35],256],65284:[[36],256],65285:[[37],256],65286:[[38],256],65287:[[39],256],65288:[[40],256],65289:[[41],256],65290:[[42],256],65291:[[43],256],65292:[[44],256],65293:[[45],256],65294:[[46],256],65295:[[47],256],65296:[[48],256],65297:[[49],256],65298:[[50],256],65299:[[51],256],65300:[[52],256],65301:[[53],256],65302:[[54],256],65303:[[55],256],65304:[[56],256],65305:[[57],256],65306:[[58],256],65307:[[59],256],65308:[[60],256],65309:[[61],256],65310:[[62],256],65311:[[63],256],65312:[[64],256],65313:[[65],256],65314:[[66],256],65315:[[67],256],65316:[[68],256],65317:[[69],256],65318:[[70],256],65319:[[71],256],65320:[[72],256],65321:[[73],256],65322:[[74],256],65323:[[75],256],65324:[[76],256],65325:[[77],256],65326:[[78],256],65327:[[79],256],65328:[[80],256],65329:[[81],256],65330:[[82],256],65331:[[83],256],65332:[[84],256],65333:[[85],256],65334:[[86],256],65335:[[87],256],65336:[[88],256],65337:[[89],256],65338:[[90],256],65339:[[91],256],65340:[[92],256],65341:[[93],256],65342:[[94],256],65343:[[95],256],65344:[[96],256],65345:[[97],256],65346:[[98],256],65347:[[99],256],65348:[[100],256],65349:[[101],256],65350:[[102],256],65351:[[103],256],65352:[[104],256],65353:[[105],256],65354:[[106],256],65355:[[107],256],65356:[[108],256],65357:[[109],256],65358:[[110],256],65359:[[111],256],65360:[[112],256],65361:[[113],256],65362:[[114],256],65363:[[115],256],65364:[[116],256],65365:[[117],256],65366:[[118],256],65367:[[119],256],65368:[[120],256],65369:[[121],256],65370:[[122],256],65371:[[123],256],65372:[[124],256],65373:[[125],256],65374:[[126],256],65375:[[10629],256],65376:[[10630],256],65377:[[12290],256],65378:[[12300],256],65379:[[12301],256],65380:[[12289],256],65381:[[12539],256],65382:[[12530],256],65383:[[12449],256],65384:[[12451],256],65385:[[12453],256],65386:[[12455],256],65387:[[12457],256],65388:[[12515],256],65389:[[12517],256],65390:[[12519],256],65391:[[12483],256],65392:[[12540],256],65393:[[12450],256],65394:[[12452],256],65395:[[12454],256],65396:[[12456],256],65397:[[12458],256],65398:[[12459],256],65399:[[12461],256],65400:[[12463],256],65401:[[12465],256],65402:[[12467],256],65403:[[12469],256],65404:[[12471],256],65405:[[12473],256],65406:[[12475],256],65407:[[12477],256],65408:[[12479],256],65409:[[12481],256],65410:[[12484],256],65411:[[12486],256],65412:[[12488],256],65413:[[12490],256],65414:[[12491],256],65415:[[12492],256],65416:[[12493],256],65417:[[12494],256],65418:[[12495],256],65419:[[12498],256],65420:[[12501],256],65421:[[12504],256],65422:[[12507],256],65423:[[12510],256],65424:[[12511],256],65425:[[12512],256],65426:[[12513],256],65427:[[12514],256],65428:[[12516],256],65429:[[12518],256],65430:[[12520],256],65431:[[12521],256],65432:[[12522],256],65433:[[12523],256],65434:[[12524],256],65435:[[12525],256],65436:[[12527],256],65437:[[12531],256],65438:[[12441],256],65439:[[12442],256],65440:[[12644],256],65441:[[12593],256],65442:[[12594],256],65443:[[12595],256],65444:[[12596],256],65445:[[12597],256],65446:[[12598],256],65447:[[12599],256],65448:[[12600],256],65449:[[12601],256],65450:[[12602],256],65451:[[12603],256],65452:[[12604],256],65453:[[12605],256],65454:[[12606],256],65455:[[12607],256],65456:[[12608],256],65457:[[12609],256],65458:[[12610],256],65459:[[12611],256],65460:[[12612],256],65461:[[12613],256],65462:[[12614],256],65463:[[12615],256],65464:[[12616],256],65465:[[12617],256],65466:[[12618],256],65467:[[12619],256],65468:[[12620],256],65469:[[12621],256],65470:[[12622],256],65474:[[12623],256],65475:[[12624],256],65476:[[12625],256],65477:[[12626],256],65478:[[12627],256],65479:[[12628],256],65482:[[12629],256],65483:[[12630],256],65484:[[12631],256],65485:[[12632],256],65486:[[12633],256],65487:[[12634],256],65490:[[12635],256],65491:[[12636],256],65492:[[12637],256],65493:[[12638],256],65494:[[12639],256],65495:[[12640],256],65498:[[12641],256],65499:[[12642],256],65500:[[12643],256],65504:[[162],256],65505:[[163],256],65506:[[172],256],65507:[[175],256],65508:[[166],256],65509:[[165],256],65510:[[8361],256],65512:[[9474],256],65513:[[8592],256],65514:[[8593],256],65515:[[8594],256],65516:[[8595],256],65517:[[9632],256],65518:[[9675],256]}
+function nSqrTo(x, r) {
+  x.squareTo(r)
+}
 
-};
+NullExp.prototype.convert = nNop
+NullExp.prototype.revert = nNop
+NullExp.prototype.mulTo = nMulTo
+NullExp.prototype.sqrTo = nSqrTo
 
-   /***** Module to export */
-   var unorm = {
-      nfc: nfc,
-      nfd: nfd,
-      nfkc: nfkc,
-      nfkd: nfkd
-   };
+// (public) this^e
+function bnPow(e) {
+  return this.exp(e, new NullExp())
+}
 
-   /*globals module:true,define:true*/
+// (protected) r = lower n words of "this * a", a.t <= n
+// "this" should be the larger one if appropriate.
+function bnpMultiplyLowerTo(a, n, r) {
+  var i = Math.min(this.t + a.t, n)
+  r.s = 0; // assumes a,this >= 0
+  r.t = i
+  while (i > 0) r[--i] = 0
+  var j
+  for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t)
+  for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i)
+  r.clamp()
+}
 
-   // CommonJS
-   if (typeof module === "object") {
-      module.exports = unorm;
+// (protected) r = "this * a" without lower n words, n > 0
+// "this" should be the larger one if appropriate.
+function bnpMultiplyUpperTo(a, n, r) {
+  --n
+  var i = r.t = this.t + a.t - n
+  r.s = 0; // assumes a,this >= 0
+  while (--i >= 0) r[i] = 0
+  for (i = Math.max(n - this.t, 0); i < a.t; ++i)
+    r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n)
+  r.clamp()
+  r.drShiftTo(1, r)
+}
 
-   // AMD
-   } else if (typeof define === "function" && define.amd) {
-      define("unorm", function () {
-         return unorm;
-      });
+// Barrett modular reduction
+function Barrett(m) {
+  // setup Barrett
+  this.r2 = new BigInteger()
+  this.q3 = new BigInteger()
+  BigInteger.ONE.dlShiftTo(2 * m.t, this.r2)
+  this.mu = this.r2.divide(m)
+  this.m = m
+}
 
-   // Global
-   } else {
-      root.unorm = unorm;
-   }
+function barrettConvert(x) {
+  if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m)
+  else if (x.compareTo(this.m) < 0) return x
+  else {
+    var r = new BigInteger()
+    x.copyTo(r)
+    this.reduce(r)
+    return r
+  }
+}
 
-   /***** Export as shim for String::normalize method *****/
-   /*
-      http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#november_8_2013_draft_rev_21
+function barrettRevert(x) {
+  return x
+}
 
-      21.1.3.12 String.prototype.normalize(form="NFC")
-      When the normalize method is called with one argument form, the following steps are taken:
+// x = x mod m (HAC 14.42)
+function barrettReduce(x) {
+  var self = this
+  x.drShiftTo(self.m.t - 1, self.r2)
+  if (x.t > self.m.t + 1) {
+    x.t = self.m.t + 1
+    x.clamp()
+  }
+  self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3)
+  self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2)
+  while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1)
+  x.subTo(self.r2, x)
+  while (x.compareTo(self.m) >= 0) x.subTo(self.m, x)
+}
 
-      1. Let O be CheckObjectCoercible(this value).
-      2. Let S be ToString(O).
-      3. ReturnIfAbrupt(S).
-      4. If form is not provided or undefined let form be "NFC".
-      5. Let f be ToString(form).
-      6. ReturnIfAbrupt(f).
-      7. If f is not one of "NFC", "NFD", "NFKC", or "NFKD", then throw a RangeError Exception.
-      8. Let ns be the String value is the result of normalizing S into the normalization form named by f as specified in Unicode Standard Annex #15, UnicodeNormalizatoin Forms.
-      9. Return ns.
+// r = x^2 mod m; x != r
+function barrettSqrTo(x, r) {
+  x.squareTo(r)
+  this.reduce(r)
+}
 
-      The length property of the normalize method is 0.
+// r = x*y mod m; x,y != r
+function barrettMulTo(x, y, r) {
+  x.multiplyTo(y, r)
+  this.reduce(r)
+}
 
-      *NOTE* The normalize function is intentionally generic; it does not require that its this value be a String object. Therefore it can be transferred to other kinds of objects for use as a method.
-   */
-    unorm.shimApplied = false;
+Barrett.prototype.convert = barrettConvert
+Barrett.prototype.revert = barrettRevert
+Barrett.prototype.reduce = barrettReduce
+Barrett.prototype.mulTo = barrettMulTo
+Barrett.prototype.sqrTo = barrettSqrTo
 
-   if (!String.prototype.normalize) {
-      String.prototype.normalize = function(form) {
-         var str = "" + this;
-         form =  form === undefined ? "NFC" : form;
+// (public) this^e % m (HAC 14.85)
+function bnModPow(e, m) {
+  var i = e.bitLength(),
+    k, r = nbv(1),
+    z
+  if (i <= 0) return r
+  else if (i < 18) k = 1
+  else if (i < 48) k = 3
+  else if (i < 144) k = 4
+  else if (i < 768) k = 5
+  else k = 6
+  if (i < 8)
+    z = new Classic(m)
+  else if (m.isEven())
+    z = new Barrett(m)
+  else
+    z = new Montgomery(m)
 
-         if (form === "NFC") {
-            return unorm.nfc(str);
-         } else if (form === "NFD") {
-            return unorm.nfd(str);
-         } else if (form === "NFKC") {
-            return unorm.nfkc(str);
-         } else if (form === "NFKD") {
-            return unorm.nfkd(str);
-         } else {
-            throw new RangeError("Invalid normalization form: " + form);
-         }
-      };
+  // precomputation
+  var g = new Array(),
+    n = 3,
+    k1 = k - 1,
+    km = (1 << k) - 1
+  g[1] = z.convert(this)
+  if (k > 1) {
+    var g2 = new BigInteger()
+    z.sqrTo(g[1], g2)
+    while (n <= km) {
+      g[n] = new BigInteger()
+      z.mulTo(g2, g[n - 2], g[n])
+      n += 2
+    }
+  }
 
-      unorm.shimApplied = true;
-   }
-}(this));
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-        <script>(function() {
-  'use strict';
+  var j = e.t - 1,
+    w, is1 = true,
+    r2 = new BigInteger(),
+    t
+  i = nbits(e[j]) - 1
+  while (j >= 0) {
+    if (i >= k1) w = (e[j] >> (i - k1)) & km
+    else {
+      w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i)
+      if (j > 0) w |= e[j - 1] >> (this.DB + i - k1)
+    }
 
-  /**
-   * Extend an Object with another Object's properties.
-   *
-   * The source objects are specified as additional arguments.
-   *
-   * @param dst Object the object to extend.
-   *
-   * @return Object the final object.
-   */
-  var _extend = function(dst) {
-    var sources = Array.prototype.slice.call(arguments, 1);
-    for (var i=0; i<sources.length; ++i) {
-      var src = sources[i];
-      for (var p in src) {
-        if (src.hasOwnProperty(p)) dst[p] = src[p];
+    n = k
+    while ((w & 1) == 0) {
+      w >>= 1
+      --n
+    }
+    if ((i -= n) < 0) {
+      i += this.DB
+      --j
+    }
+    if (is1) { // ret == 1, don't bother squaring or multiplying it
+      g[w].copyTo(r)
+      is1 = false
+    } else {
+      while (n > 1) {
+        z.sqrTo(r, r2)
+        z.sqrTo(r2, r)
+        n -= 2
+      }
+      if (n > 0) z.sqrTo(r, r2)
+      else {
+        t = r
+        r = r2
+        r2 = t
       }
+      z.mulTo(r2, g[w], r)
     }
-    return dst;
-  };
 
+    while (j >= 0 && (e[j] & (1 << i)) == 0) {
+      z.sqrTo(r, r2)
+      t = r
+      r = r2
+      r2 = t
+      if (--i < 0) {
+        i = this.DB - 1
+        --j
+      }
+    }
+  }
+  return z.revert(r)
+}
+
+// (public) gcd(this,a) (HAC 14.54)
+function bnGCD(a) {
+  var x = (this.s < 0) ? this.negate() : this.clone()
+  var y = (a.s < 0) ? a.negate() : a.clone()
+  if (x.compareTo(y) < 0) {
+    var t = x
+    x = y
+    y = t
+  }
+  var i = x.getLowestSetBit(),
+    g = y.getLowestSetBit()
+  if (g < 0) return x
+  if (i < g) g = i
+  if (g > 0) {
+    x.rShiftTo(g, x)
+    y.rShiftTo(g, y)
+  }
+  while (x.signum() > 0) {
+    if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x)
+    if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y)
+    if (x.compareTo(y) >= 0) {
+      x.subTo(y, x)
+      x.rShiftTo(1, x)
+    } else {
+      y.subTo(x, y)
+      y.rShiftTo(1, y)
+    }
+  }
+  if (g > 0) y.lShiftTo(g, y)
+  return y
+}
+
+// (protected) this % n, n < 2^26
+function bnpModInt(n) {
+  if (n <= 0) return 0
+  var d = this.DV % n,
+    r = (this.s < 0) ? n - 1 : 0
+  if (this.t > 0)
+    if (d == 0) r = this[0] % n
+    else
+      for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n
+  return r
+}
+
+// (public) 1/this % m (HAC 14.61)
+function bnModInverse(m) {
+  var ac = m.isEven()
+  if (this.signum() === 0) throw new Error('division by zero')
+  if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO
+  var u = m.clone(),
+    v = this.clone()
+  var a = nbv(1),
+    b = nbv(0),
+    c = nbv(0),
+    d = nbv(1)
+  while (u.signum() != 0) {
+    while (u.isEven()) {
+      u.rShiftTo(1, u)
+      if (ac) {
+        if (!a.isEven() || !b.isEven()) {
+          a.addTo(this, a)
+          b.subTo(m, b)
+        }
+        a.rShiftTo(1, a)
+      } else if (!b.isEven()) b.subTo(m, b)
+      b.rShiftTo(1, b)
+    }
+    while (v.isEven()) {
+      v.rShiftTo(1, v)
+      if (ac) {
+        if (!c.isEven() || !d.isEven()) {
+          c.addTo(this, c)
+          d.subTo(m, d)
+        }
+        c.rShiftTo(1, c)
+      } else if (!d.isEven()) d.subTo(m, d)
+      d.rShiftTo(1, d)
+    }
+    if (u.compareTo(v) >= 0) {
+      u.subTo(v, u)
+      if (ac) a.subTo(c, a)
+      b.subTo(d, b)
+    } else {
+      v.subTo(u, v)
+      if (ac) c.subTo(a, c)
+      d.subTo(b, d)
+    }
+  }
+  if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO
+  while (d.compareTo(m) >= 0) d.subTo(m, d)
+  while (d.signum() < 0) d.addTo(m, d)
+  return d
+}
+
+var lowprimes = [
+  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
+  73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151,
+  157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233,
+  239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
+  331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
+  421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503,
+  509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607,
+  613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701,
+  709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811,
+  821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911,
+  919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997
+]
+
+var lplim = (1 << 26) / lowprimes[lowprimes.length - 1]
+
+// (public) test primality with certainty >= 1-.5^t
+function bnIsProbablePrime(t) {
+  var i, x = this.abs()
+  if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) {
+    for (i = 0; i < lowprimes.length; ++i)
+      if (x[0] == lowprimes[i]) return true
+    return false
+  }
+  if (x.isEven()) return false
+  i = 1
+  while (i < lowprimes.length) {
+    var m = lowprimes[i],
+      j = i + 1
+    while (j < lowprimes.length && m < lplim) m *= lowprimes[j++]
+    m = x.modInt(m)
+    while (i < j) if (m % lowprimes[i++] == 0) return false
+  }
+  return x.millerRabin(t)
+}
 
-  /**
-   * Defer execution of given function.
-   * @param  {Function} func
-   */
-  var _defer = function(func) {
-    if (typeof setImmediate === 'function') {
-      return setImmediate(func);
-    } else {
-      return setTimeout(func, 0);
+// (protected) true if probably prime (HAC 4.24, Miller-Rabin)
+function bnpMillerRabin(t) {
+  var n1 = this.subtract(BigInteger.ONE)
+  var k = n1.getLowestSetBit()
+  if (k <= 0) return false
+  var r = n1.shiftRight(k)
+  t = (t + 1) >> 1
+  if (t > lowprimes.length) t = lowprimes.length
+  var a = new BigInteger(null)
+  var j, bases = []
+  for (var i = 0; i < t; ++i) {
+    for (;;) {
+      j = lowprimes[Math.floor(Math.random() * lowprimes.length)]
+      if (bases.indexOf(j) == -1) break
     }
-  };
-
-  /**
-   * Based on the algorithm at http://en.wikipedia.org/wiki/Levenshtein_distance.
-   */
-  var Levenshtein = {
-    /**
-     * Calculate levenshtein distance of the two strings.
-     *
-     * @param str1 String the first string.
-     * @param str2 String the second string.
-     * @return Integer the levenshtein distance (0 and above).
-     */
-    get: function(str1, str2) {
-      // base cases
-      if (str1 === str2) return 0;
-      if (str1.length === 0) return str2.length;
-      if (str2.length === 0) return str1.length;
+    bases.push(j)
+    a.fromInt(j)
+    var y = a.modPow(r, this)
+    if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
+      var j = 1
+      while (j++ < k && y.compareTo(n1) != 0) {
+        y = y.modPowInt(2, this)
+        if (y.compareTo(BigInteger.ONE) == 0) return false
+      }
+      if (y.compareTo(n1) != 0) return false
+    }
+  }
+  return true
+}
 
-      // two rows
-      var prevRow  = new Array(str2.length + 1),
-          curCol, nextCol, i, j, tmp;
+// protected
+proto.chunkSize = bnpChunkSize
+proto.toRadix = bnpToRadix
+proto.fromRadix = bnpFromRadix
+proto.fromNumber = bnpFromNumber
+proto.bitwiseTo = bnpBitwiseTo
+proto.changeBit = bnpChangeBit
+proto.addTo = bnpAddTo
+proto.dMultiply = bnpDMultiply
+proto.dAddOffset = bnpDAddOffset
+proto.multiplyLowerTo = bnpMultiplyLowerTo
+proto.multiplyUpperTo = bnpMultiplyUpperTo
+proto.modInt = bnpModInt
+proto.millerRabin = bnpMillerRabin
 
-      // initialise previous row
-      for (i=0; i<prevRow.length; ++i) {
-        prevRow[i] = i;
-      }
+// public
+proto.clone = bnClone
+proto.intValue = bnIntValue
+proto.byteValue = bnByteValue
+proto.shortValue = bnShortValue
+proto.signum = bnSigNum
+proto.toByteArray = bnToByteArray
+proto.equals = bnEquals
+proto.min = bnMin
+proto.max = bnMax
+proto.and = bnAnd
+proto.or = bnOr
+proto.xor = bnXor
+proto.andNot = bnAndNot
+proto.not = bnNot
+proto.shiftLeft = bnShiftLeft
+proto.shiftRight = bnShiftRight
+proto.getLowestSetBit = bnGetLowestSetBit
+proto.bitCount = bnBitCount
+proto.testBit = bnTestBit
+proto.setBit = bnSetBit
+proto.clearBit = bnClearBit
+proto.flipBit = bnFlipBit
+proto.add = bnAdd
+proto.subtract = bnSubtract
+proto.multiply = bnMultiply
+proto.divide = bnDivide
+proto.remainder = bnRemainder
+proto.divideAndRemainder = bnDivideAndRemainder
+proto.modPow = bnModPow
+proto.modInverse = bnModInverse
+proto.pow = bnPow
+proto.gcd = bnGCD
+proto.isProbablePrime = bnIsProbablePrime
 
-      // calculate current row distance from previous row
-      for (i=0; i<str1.length; ++i) {
-        nextCol = i + 1;
+// JSBN-specific extension
+proto.square = bnSquare
 
-        for (j=0; j<str2.length; ++j) {
-          curCol = nextCol;
+// constants
+BigInteger.ZERO = nbv(0)
+BigInteger.ONE = nbv(1)
+BigInteger.valueOf = nbv
 
-          // substution
-          nextCol = prevRow[j] + ( (str1.charAt(i) === str2.charAt(j)) ? 0 : 1 );
-          // insertion
-          tmp = curCol + 1;
-          if (nextCol > tmp) {
-            nextCol = tmp;
-          }
-          // deletion
-          tmp = prevRow[j + 1] + 1;
-          if (nextCol > tmp) {
-            nextCol = tmp;
-          }
+module.exports = BigInteger
 
-          // copy current col value into previous (in preparation for next iteration)
-          prevRow[j] = curCol;
-        }
+},{"../package.json":40}],38:[function(require,module,exports){
+(function (Buffer){
+// FIXME: Kind of a weird way to throw exceptions, consider removing
+var assert = require('assert')
+var BigInteger = require('./bigi')
 
-        // copy last col value into previous (in preparation for next iteration)
-        prevRow[j] = nextCol;
-      }
+/**
+ * Turns a byte array into a big integer.
+ *
+ * This function will interpret a byte array as a big integer in big
+ * endian notation.
+ */
+BigInteger.fromByteArrayUnsigned = function(byteArray) {
+  // BigInteger expects a DER integer conformant byte array
+  if (byteArray[0] & 0x80) {
+    return new BigInteger([0].concat(byteArray))
+  }
 
-      return nextCol;
-    },
+  return new BigInteger(byteArray)
+}
 
-    /**
-     * Asynchronously calculate levenshtein distance of the two strings.
-     *
-     * @param str1 String the first string.
-     * @param str2 String the second string.
-     * @param cb Function callback function with signature: function(Error err, int distance)
-     * @param [options] Object additional options.
-     * @param [options.progress] Function progress callback with signature: function(percentComplete)
-     */
-    getAsync: function(str1, str2, cb, options) {
-      options = _extend({}, {
-        progress: null
-      }, options);
+/**
+ * Returns a byte array representation of the big integer.
+ *
+ * This returns the absolute of the contained value in big endian
+ * form. A value of zero results in an empty array.
+ */
+BigInteger.prototype.toByteArrayUnsigned = function() {
+  var byteArray = this.toByteArray()
+  return byteArray[0] === 0 ? byteArray.slice(1) : byteArray
+}
 
-      // base cases
-      if (str1 === str2) return cb(null, 0);
-      if (str1.length === 0) return cb(null, str2.length);
-      if (str2.length === 0) return cb(null, str1.length);
+BigInteger.fromDERInteger = function(byteArray) {
+  return new BigInteger(byteArray)
+}
 
-      // two rows
-      var prevRow  = new Array(str2.length + 1),
-          curCol, nextCol,
-          i, j, tmp,
-          startTime, currentTime;
+/*
+ * Converts BigInteger to a DER integer representation.
+ *
+ * The format for this value uses the most significant bit as a sign
+ * bit.  If the most significant bit is already set and the integer is
+ * positive, a 0x00 is prepended.
+ *
+ * Examples:
+ *
+ *      0 =>     0x00
+ *      1 =>     0x01
+ *     -1 =>     0xff
+ *    127 =>     0x7f
+ *   -127 =>     0x81
+ *    128 =>   0x0080
+ *   -128 =>     0x80
+ *    255 =>   0x00ff
+ *   -255 =>   0xff01
+ *  16300 =>   0x3fac
+ * -16300 =>   0xc054
+ *  62300 => 0x00f35c
+ * -62300 => 0xff0ca4
+*/
+BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray
 
-      // initialise previous row
-      for (i=0; i<prevRow.length; ++i) {
-        prevRow[i] = i;
-      }
+BigInteger.fromBuffer = function(buffer) {
+  // BigInteger expects a DER integer conformant byte array
+  if (buffer[0] & 0x80) {
+    var byteArray = Array.prototype.slice.call(buffer)
 
-      nextCol = 1;
-      i = 0;
-      j = -1;
+    return new BigInteger([0].concat(byteArray))
+  }
 
-      var __calculate = function() {
-        // reset timer
-        startTime = new Date().valueOf();
-        currentTime = startTime;
+  return new BigInteger(buffer)
+}
 
-        // keep going until one second has elapsed
-        while (currentTime - startTime < 1000) {
-          // reached end of current row?
-          if (str2.length <= (++j)) {
-            // copy current into previous (in preparation for next iteration)
-            prevRow[j] = nextCol;
+BigInteger.fromHex = function(hex) {
+  if (hex === '') return BigInteger.ZERO
 
-            // if already done all chars
-            if (str1.length <= (++i)) {
-              return cb(null, nextCol);
-            }
-            // else if we have more left to do
-            else {
-              nextCol = i + 1;
-              j = 0;
-            }
-          }
+  assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string')
+  assert.equal(hex.length % 2, 0, 'Incomplete hex')
+  return new BigInteger(hex, 16)
+}
 
-          // calculation
-          curCol = nextCol;
+BigInteger.prototype.toBuffer = function(size) {
+  var byteArray = this.toByteArrayUnsigned()
+  var zeros = []
 
-          // substution
-          nextCol = prevRow[j] + ( (str1.charAt(i) === str2.charAt(j)) ? 0 : 1 );
-          // insertion
-          tmp = curCol + 1;
-          if (nextCol > tmp) {
-            nextCol = tmp;
-          }
-          // deletion
-          tmp = prevRow[j + 1] + 1;
-          if (nextCol > tmp) {
-            nextCol = tmp;
-          }
+  var padding = size - byteArray.length
+  while (zeros.length < padding) zeros.push(0)
 
-          // copy current into previous (in preparation for next iteration)
-          prevRow[j] = curCol;
+  return new Buffer(zeros.concat(byteArray))
+}
 
-          // get current time
-          currentTime = new Date().valueOf();
-        }
+BigInteger.prototype.toHex = function(size) {
+  return this.toBuffer(size).toString('hex')
+}
 
-        // send a progress update?
-        if (null !== options.progress) {
-          try {
-            options.progress.call(null, (i * 100.0/ str1.length));
-          } catch (err) {
-            return cb('Progress callback: ' + err.toString());
-          }
-        }
+}).call(this,require("buffer").Buffer)
+},{"./bigi":37,"assert":1,"buffer":5}],39:[function(require,module,exports){
+var BigInteger = require('./bigi')
 
-        // next iteration
-        _defer(__calculate);
-      };
+//addons
+require('./convert')
 
-      __calculate();
+module.exports = BigInteger
+},{"./bigi":37,"./convert":38}],40:[function(require,module,exports){
+module.exports={
+  "_args": [
+    [
+      "bigi",
+      "/home/ian/git/bitcoin/bitcoinjs-lib-browser"
+    ]
+  ],
+  "_from": "bigi@latest",
+  "_id": "bigi@1.4.2",
+  "_inCache": true,
+  "_installable": true,
+  "_location": "/bigi",
+  "_nodeVersion": "6.1.0",
+  "_npmOperationalInternal": {
+    "host": "packages-12-west.internal.npmjs.com",
+    "tmp": "tmp/bigi-1.4.2.tgz_1469584192413_0.6801238611806184"
+  },
+  "_npmUser": {
+    "email": "jprichardson@gmail.com",
+    "name": "jprichardson"
+  },
+  "_npmVersion": "3.8.6",
+  "_phantomChildren": {},
+  "_requested": {
+    "name": "bigi",
+    "raw": "bigi",
+    "rawSpec": "",
+    "scope": null,
+    "spec": "latest",
+    "type": "tag"
+  },
+  "_requiredBy": [
+    "#USER",
+    "/bitcoinjs-lib",
+    "/ecurve"
+  ],
+  "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz",
+  "_shasum": "9c665a95f88b8b08fc05cfd731f561859d725825",
+  "_shrinkwrap": null,
+  "_spec": "bigi",
+  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser",
+  "bugs": {
+    "url": "https://github.com/cryptocoinjs/bigi/issues"
+  },
+  "dependencies": {},
+  "description": "Big integers.",
+  "devDependencies": {
+    "coveralls": "^2.11.2",
+    "istanbul": "^0.3.5",
+    "jshint": "^2.5.1",
+    "mocha": "^2.1.0",
+    "mochify": "^2.1.0"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "9c665a95f88b8b08fc05cfd731f561859d725825",
+    "tarball": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz"
+  },
+  "gitHead": "c25308081c896ff84702303722bf5ecd8b3f78e3",
+  "homepage": "https://github.com/cryptocoinjs/bigi#readme",
+  "keywords": [
+    "cryptography",
+    "math",
+    "bitcoin",
+    "arbitrary",
+    "precision",
+    "arithmetic",
+    "big",
+    "integer",
+    "int",
+    "number",
+    "biginteger",
+    "bigint",
+    "bignumber",
+    "decimal",
+    "float"
+  ],
+  "main": "./lib/index.js",
+  "maintainers": [
+    {
+      "email": "boydb@midnightdesign.ws",
+      "name": "midnightlightning"
+    },
+    {
+      "email": "sidazhang89@gmail.com",
+      "name": "sidazhang"
+    },
+    {
+      "email": "npm@shesek.info",
+      "name": "nadav"
+    },
+    {
+      "email": "jprichardson@gmail.com",
+      "name": "jprichardson"
     }
+  ],
+  "name": "bigi",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/cryptocoinjs/bigi.git"
+  },
+  "scripts": {
+    "browser-test": "mochify --wd -R spec",
+    "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js",
+    "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info",
+    "jshint": "jshint --config jshint.json lib/*.js ; true",
+    "test": "_mocha -- test/*.js",
+    "unit": "mocha"
+  },
+  "testling": {
+    "browsers": [
+      "ie/9..latest",
+      "firefox/latest",
+      "chrome/latest",
+      "safari/6.0..latest",
+      "iphone/6.0..latest",
+      "android-browser/4.2..latest"
+    ],
+    "files": "test/*.js",
+    "harness": "mocha"
+  },
+  "version": "1.4.2"
+}
 
-  };
-
-  // amd
-  if (typeof define !== "undefined" && define !== null && define.amd) {
-    define(function() {
-      return Levenshtein;
-    });
-  }
-  // commonjs
-  else if (typeof module !== "undefined" && module !== null && typeof exports !== "undefined" && module.exports === exports) {
-    module.exports = Levenshtein;
-  }
-  // web worker
-  else if (typeof self !== "undefined" && typeof self.postMessage === 'function' && typeof self.importScripts === 'function') {
-    self.Levenshtein = Levenshtein;
-  }
-  // browser main thread
-  else if (typeof window !== "undefined" && window !== null) {
-    window.Levenshtein = Levenshtein;
-  }
-}());
+},{}],41:[function(require,module,exports){
+// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki
+// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
+// NOTE: SIGHASH byte ignored AND restricted, truncate before use
 
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-55,25],[11,45,15,46,46,16],[13,145,115,6,146,116],[14,74,46,23,75,47],[44,54,24,7,55,25],[59,46,16,1,47,17],[12,151,121,7,152,122],[12,75,47,26,76,48],[39,54,24,14,55,25],[22,45,15,41,46,16],[6,151,121,14,152,122],[6,75,47,34,76,48],[46,54,24,10,55,25],[2,45,15,64,46,16],[17,152,122,4,153,123],[29,74,46,14,75,47],[49,54,24,10,55,25],[24,45,15,46,46,16],[4,152,122,18,153,123],[13,74,46,32,75,47],[48,54,24,14,55,25],[42,45,15,32,46,16],[20,147,117,4,148,118],[40,75,47,7,76,48],[43,54,24,22,55,25],[10,
-45,15,67,46,16],[19,148,118,6,149,119],[18,75,47,31,76,48],[34,54,24,34,55,25],[20,45,15,61,46,16]];p.getRSBlocks=function(a,c){var d=p.getRsBlockTable(a,c);if(void 0==d)throw Error("bad rs block @ typeNumber:"+a+"/errorCorrectLevel:"+c);for(var b=d.length/3,e=[],f=0;f<b;f++)for(var h=d[3*f+0],g=d[3*f+1],j=d[3*f+2],l=0;l<h;l++)e.push(new p(g,j));return e};p.getRsBlockTable=function(a,c){switch(c){case 1:return p.RS_BLOCK_TABLE[4*(a-1)+0];case 0:return p.RS_BLOCK_TABLE[4*(a-1)+1];case 3:return p.RS_BLOCK_TABLE[4*
-(a-1)+2];case 2:return p.RS_BLOCK_TABLE[4*(a-1)+3]}};t.prototype={get:function(a){return 1==(this.buffer[Math.floor(a/8)]>>>7-a%8&1)},put:function(a,c){for(var d=0;d<c;d++)this.putBit(1==(a>>>c-d-1&1))},getLengthInBits:function(){return this.length},putBit:function(a){var c=Math.floor(this.length/8);this.buffer.length<=c&&this.buffer.push(0);a&&(this.buffer[c]|=128>>>this.length%8);this.length++}};"string"===typeof h&&(h={text:h});h=r.extend({},{render:"canvas",width:256,height:256,typeNumber:-1,
-correctLevel:3,background:"#ffffff",foreground:"#000000"},h);return this.each(function(){var a;if("canvas"==h.render){a=new o(h.typeNumber,h.correctLevel);a.addData(h.text);a.make();var c=document.createElement("canvas");c.width=h.width;c.height=h.height;for(var d=c.getContext("2d"),b=h.width/a.getModuleCount(),e=h.height/a.getModuleCount(),f=0;f<a.getModuleCount();f++)for(var i=0;i<a.getModuleCount();i++){d.fillStyle=a.isDark(f,i)?h.foreground:h.background;var g=Math.ceil((i+1)*b)-Math.floor(i*b),
-j=Math.ceil((f+1)*b)-Math.floor(f*b);d.fillRect(Math.round(i*b),Math.round(f*e),g,j)}}else{a=new o(h.typeNumber,h.correctLevel);a.addData(h.text);a.make();c=r("<table></table>").css("width",h.width+"px").css("height",h.height+"px").css("border","0px").css("border-collapse","collapse").css("background-color",h.background);d=h.width/a.getModuleCount();b=h.height/a.getModuleCount();for(e=0;e<a.getModuleCount();e++){f=r("<tr></tr>").css("height",b+"px").appendTo(c);for(i=0;i<a.getModuleCount();i++)r("<td></td>").css("width",
-d+"px").css("background-color",a.isDark(e,i)?h.foreground:h.background).appendTo(f)}}a=c;$(a).appendTo(this)})}})($);
-</script>
-        <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.bitcoinjs = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-(function (global){
-'use strict';
+var Buffer = require('safe-buffer').Buffer
 
-// compare and isBuffer taken from https://github.com/feross/buffer/blob/680e9e5e488f22aac27599a57dc844a6315928dd/index.js
-// original notice:
+function check (buffer) {
+  if (buffer.length < 8) return false
+  if (buffer.length > 72) return false
+  if (buffer[0] !== 0x30) return false
+  if (buffer[1] !== buffer.length - 2) return false
+  if (buffer[2] !== 0x02) return false
 
-/*!
- * The buffer module from node.js, for the browser.
- *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
- * @license  MIT
- */
-function compare(a, b) {
-  if (a === b) {
-    return 0;
-  }
+  var lenR = buffer[3]
+  if (lenR === 0) return false
+  if (5 + lenR >= buffer.length) return false
+  if (buffer[4 + lenR] !== 0x02) return false
 
-  var x = a.length;
-  var y = b.length;
+  var lenS = buffer[5 + lenR]
+  if (lenS === 0) return false
+  if ((6 + lenR + lenS) !== buffer.length) return false
 
-  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
-    if (a[i] !== b[i]) {
-      x = a[i];
-      y = b[i];
-      break;
-    }
-  }
+  if (buffer[4] & 0x80) return false
+  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false
 
-  if (x < y) {
-    return -1;
-  }
-  if (y < x) {
-    return 1;
-  }
-  return 0;
-}
-function isBuffer(b) {
-  if (global.Buffer && typeof global.Buffer.isBuffer === 'function') {
-    return global.Buffer.isBuffer(b);
-  }
-  return !!(b != null && b._isBuffer);
+  if (buffer[lenR + 6] & 0x80) return false
+  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false
+  return true
 }
 
-// based on node assert, original notice:
+function decode (buffer) {
+  if (buffer.length < 8) throw new Error('DER sequence length is too short')
+  if (buffer.length > 72) throw new Error('DER sequence length is too long')
+  if (buffer[0] !== 0x30) throw new Error('Expected DER sequence')
+  if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid')
+  if (buffer[2] !== 0x02) throw new Error('Expected DER integer')
 
-// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
-//
-// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
-//
-// Originally from narwhal.js (http://narwhaljs.org)
-// Copyright (c) 2009 Thomas Robinson <280north.com>
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the 'Software'), to
-// deal in the Software without restriction, including without limitation the
-// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-// sell copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
-// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+  var lenR = buffer[3]
+  if (lenR === 0) throw new Error('R length is zero')
+  if (5 + lenR >= buffer.length) throw new Error('R length is too long')
+  if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)')
 
-var util = require('util/');
-var hasOwn = Object.prototype.hasOwnProperty;
-var pSlice = Array.prototype.slice;
-var functionsHaveNames = (function () {
-  return function foo() {}.name === 'foo';
-}());
-function pToString (obj) {
-  return Object.prototype.toString.call(obj);
-}
-function isView(arrbuf) {
-  if (isBuffer(arrbuf)) {
-    return false;
-  }
-  if (typeof global.ArrayBuffer !== 'function') {
-    return false;
-  }
-  if (typeof ArrayBuffer.isView === 'function') {
-    return ArrayBuffer.isView(arrbuf);
-  }
-  if (!arrbuf) {
-    return false;
-  }
-  if (arrbuf instanceof DataView) {
-    return true;
-  }
-  if (arrbuf.buffer && arrbuf.buffer instanceof ArrayBuffer) {
-    return true;
-  }
-  return false;
-}
-// 1. The assert module provides functions that throw
-// AssertionError's when particular conditions are not met. The
-// assert module must conform to the following interface.
+  var lenS = buffer[5 + lenR]
+  if (lenS === 0) throw new Error('S length is zero')
+  if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid')
 
-var assert = module.exports = ok;
+  if (buffer[4] & 0x80) throw new Error('R value is negative')
+  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded')
 
-// 2. The AssertionError is defined in assert.
-// new assert.AssertionError({ message: message,
-//                             actual: actual,
-//                             expected: expected })
+  if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative')
+  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded')
 
-var regex = /\s*function\s+([^\(\s]*)\s*/;
-// based on https://github.com/ljharb/function.prototype.name/blob/adeeeec8bfcc6068b187d7d9fb3d5bb1d3a30899/implementation.js
-function getName(func) {
-  if (!util.isFunction(func)) {
-    return;
-  }
-  if (functionsHaveNames) {
-    return func.name;
+  // non-BIP66 - extract R, S values
+  return {
+    r: buffer.slice(4, 4 + lenR),
+    s: buffer.slice(6 + lenR)
   }
-  var str = func.toString();
-  var match = str.match(regex);
-  return match && match[1];
 }
-assert.AssertionError = function AssertionError(options) {
-  this.name = 'AssertionError';
-  this.actual = options.actual;
-  this.expected = options.expected;
-  this.operator = options.operator;
-  if (options.message) {
-    this.message = options.message;
-    this.generatedMessage = false;
-  } else {
-    this.message = getMessage(this);
-    this.generatedMessage = true;
-  }
-  var stackStartFunction = options.stackStartFunction || fail;
-  if (Error.captureStackTrace) {
-    Error.captureStackTrace(this, stackStartFunction);
-  } else {
-    // non v8 browsers so we can have a stacktrace
-    var err = new Error();
-    if (err.stack) {
-      var out = err.stack;
 
-      // try to strip useless frames
-      var fn_name = getName(stackStartFunction);
-      var idx = out.indexOf('\n' + fn_name);
-      if (idx >= 0) {
-        // once we have located the function frame
-        // we need to strip out everything before it (and its line)
-        var next_line = out.indexOf('\n', idx + 1);
-        out = out.substring(next_line + 1);
-      }
+/*
+ * Expects r and s to be positive DER integers.
+ *
+ * The DER format uses the most significant bit as a sign bit (& 0x80).
+ * If the significant bit is set AND the integer is positive, a 0x00 is prepended.
+ *
+ * Examples:
+ *
+ *      0 =>     0x00
+ *      1 =>     0x01
+ *     -1 =>     0xff
+ *    127 =>     0x7f
+ *   -127 =>     0x81
+ *    128 =>   0x0080
+ *   -128 =>     0x80
+ *    255 =>   0x00ff
+ *   -255 =>   0xff01
+ *  16300 =>   0x3fac
+ * -16300 =>   0xc054
+ *  62300 => 0x00f35c
+ * -62300 => 0xff0ca4
+*/
+function encode (r, s) {
+  var lenR = r.length
+  var lenS = s.length
+  if (lenR === 0) throw new Error('R length is zero')
+  if (lenS === 0) throw new Error('S length is zero')
+  if (lenR > 33) throw new Error('R length is too long')
+  if (lenS > 33) throw new Error('S length is too long')
+  if (r[0] & 0x80) throw new Error('R value is negative')
+  if (s[0] & 0x80) throw new Error('S value is negative')
+  if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded')
+  if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded')
 
-      this.stack = out;
-    }
-  }
-};
+  var signature = Buffer.allocUnsafe(6 + lenR + lenS)
 
-// assert.AssertionError instanceof Error
-util.inherits(assert.AssertionError, Error);
+  // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
+  signature[0] = 0x30
+  signature[1] = signature.length - 2
+  signature[2] = 0x02
+  signature[3] = r.length
+  r.copy(signature, 4)
+  signature[4 + lenR] = 0x02
+  signature[5 + lenR] = s.length
+  s.copy(signature, 6 + lenR)
 
-function truncate(s, n) {
-  if (typeof s === 'string') {
-    return s.length < n ? s : s.slice(0, n);
-  } else {
-    return s;
-  }
-}
-function inspect(something) {
-  if (functionsHaveNames || !util.isFunction(something)) {
-    return util.inspect(something);
-  }
-  var rawname = getName(something);
-  var name = rawname ? ': ' + rawname : '';
-  return '[Function' +  name + ']';
-}
-function getMessage(self) {
-  return truncate(inspect(self.actual), 128) + ' ' +
-         self.operator + ' ' +
-         truncate(inspect(self.expected), 128);
+  return signature
 }
 
-// At present only the three keys mentioned above are used and
-// understood by the spec. Implementations or sub modules can pass
-// other keys to the AssertionError's constructor - they will be
-// ignored.
-
-// 3. All of the following functions must throw an AssertionError
-// when a corresponding condition is not met, with a message that
-// may be undefined if not provided.  All assertion methods provide
-// both the actual and expected values to the assertion error for
-// display purposes.
-
-function fail(actual, expected, message, operator, stackStartFunction) {
-  throw new assert.AssertionError({
-    message: message,
-    actual: actual,
-    expected: expected,
-    operator: operator,
-    stackStartFunction: stackStartFunction
-  });
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
 }
 
-// EXTENSION! allows for well behaved errors defined elsewhere.
-assert.fail = fail;
+},{"safe-buffer":128}],42:[function(require,module,exports){
+module.exports={
+  "OP_FALSE": 0,
+  "OP_0": 0,
+  "OP_PUSHDATA1": 76,
+  "OP_PUSHDATA2": 77,
+  "OP_PUSHDATA4": 78,
+  "OP_1NEGATE": 79,
+  "OP_RESERVED": 80,
+  "OP_1": 81,
+  "OP_TRUE": 81,
+  "OP_2": 82,
+  "OP_3": 83,
+  "OP_4": 84,
+  "OP_5": 85,
+  "OP_6": 86,
+  "OP_7": 87,
+  "OP_8": 88,
+  "OP_9": 89,
+  "OP_10": 90,
+  "OP_11": 91,
+  "OP_12": 92,
+  "OP_13": 93,
+  "OP_14": 94,
+  "OP_15": 95,
+  "OP_16": 96,
 
-// 4. Pure assertion tests whether a value is truthy, as determined
-// by !!guard.
-// assert.ok(guard, message_opt);
-// This statement is equivalent to assert.equal(true, !!guard,
-// message_opt);. To test strictly for the value true, use
-// assert.strictEqual(true, guard, message_opt);.
+  "OP_NOP": 97,
+  "OP_VER": 98,
+  "OP_IF": 99,
+  "OP_NOTIF": 100,
+  "OP_VERIF": 101,
+  "OP_VERNOTIF": 102,
+  "OP_ELSE": 103,
+  "OP_ENDIF": 104,
+  "OP_VERIFY": 105,
+  "OP_RETURN": 106,
 
-function ok(value, message) {
-  if (!value) fail(value, true, message, '==', assert.ok);
-}
-assert.ok = ok;
+  "OP_TOALTSTACK": 107,
+  "OP_FROMALTSTACK": 108,
+  "OP_2DROP": 109,
+  "OP_2DUP": 110,
+  "OP_3DUP": 111,
+  "OP_2OVER": 112,
+  "OP_2ROT": 113,
+  "OP_2SWAP": 114,
+  "OP_IFDUP": 115,
+  "OP_DEPTH": 116,
+  "OP_DROP": 117,
+  "OP_DUP": 118,
+  "OP_NIP": 119,
+  "OP_OVER": 120,
+  "OP_PICK": 121,
+  "OP_ROLL": 122,
+  "OP_ROT": 123,
+  "OP_SWAP": 124,
+  "OP_TUCK": 125,
 
-// 5. The equality assertion tests shallow, coercive equality with
-// ==.
-// assert.equal(actual, expected, message_opt);
+  "OP_CAT": 126,
+  "OP_SUBSTR": 127,
+  "OP_LEFT": 128,
+  "OP_RIGHT": 129,
+  "OP_SIZE": 130,
 
-assert.equal = function equal(actual, expected, message) {
-  if (actual != expected) fail(actual, expected, message, '==', assert.equal);
-};
+  "OP_INVERT": 131,
+  "OP_AND": 132,
+  "OP_OR": 133,
+  "OP_XOR": 134,
+  "OP_EQUAL": 135,
+  "OP_EQUALVERIFY": 136,
+  "OP_RESERVED1": 137,
+  "OP_RESERVED2": 138,
 
-// 6. The non-equality assertion tests for whether two objects are not equal
-// with != assert.notEqual(actual, expected, message_opt);
+  "OP_1ADD": 139,
+  "OP_1SUB": 140,
+  "OP_2MUL": 141,
+  "OP_2DIV": 142,
+  "OP_NEGATE": 143,
+  "OP_ABS": 144,
+  "OP_NOT": 145,
+  "OP_0NOTEQUAL": 146,
+  "OP_ADD": 147,
+  "OP_SUB": 148,
+  "OP_MUL": 149,
+  "OP_DIV": 150,
+  "OP_MOD": 151,
+  "OP_LSHIFT": 152,
+  "OP_RSHIFT": 153,
 
-assert.notEqual = function notEqual(actual, expected, message) {
-  if (actual == expected) {
-    fail(actual, expected, message, '!=', assert.notEqual);
-  }
-};
+  "OP_BOOLAND": 154,
+  "OP_BOOLOR": 155,
+  "OP_NUMEQUAL": 156,
+  "OP_NUMEQUALVERIFY": 157,
+  "OP_NUMNOTEQUAL": 158,
+  "OP_LESSTHAN": 159,
+  "OP_GREATERTHAN": 160,
+  "OP_LESSTHANOREQUAL": 161,
+  "OP_GREATERTHANOREQUAL": 162,
+  "OP_MIN": 163,
+  "OP_MAX": 164,
 
-// 7. The equivalence assertion tests a deep equality relation.
-// assert.deepEqual(actual, expected, message_opt);
+  "OP_WITHIN": 165,
 
-assert.deepEqual = function deepEqual(actual, expected, message) {
-  if (!_deepEqual(actual, expected, false)) {
-    fail(actual, expected, message, 'deepEqual', assert.deepEqual);
-  }
-};
+  "OP_RIPEMD160": 166,
+  "OP_SHA1": 167,
+  "OP_SHA256": 168,
+  "OP_HASH160": 169,
+  "OP_HASH256": 170,
+  "OP_CODESEPARATOR": 171,
+  "OP_CHECKSIG": 172,
+  "OP_CHECKSIGVERIFY": 173,
+  "OP_CHECKMULTISIG": 174,
+  "OP_CHECKMULTISIGVERIFY": 175,
 
-assert.deepStrictEqual = function deepStrictEqual(actual, expected, message) {
-  if (!_deepEqual(actual, expected, true)) {
-    fail(actual, expected, message, 'deepStrictEqual', assert.deepStrictEqual);
-  }
-};
+  "OP_NOP1": 176,
+  "OP_NOP2": 177,
+  "OP_CHECKLOCKTIMEVERIFY": 177,
 
-function _deepEqual(actual, expected, strict, memos) {
-  // 7.1. All identical values are equivalent, as determined by ===.
-  if (actual === expected) {
-    return true;
-  } else if (isBuffer(actual) && isBuffer(expected)) {
-    return compare(actual, expected) === 0;
+  "OP_NOP3": 178,
+  "OP_NOP4": 179,
+  "OP_NOP5": 180,
+  "OP_NOP6": 181,
+  "OP_NOP7": 182,
+  "OP_NOP8": 183,
+  "OP_NOP9": 184,
+  "OP_NOP10": 185,
 
-  // 7.2. If the expected value is a Date object, the actual value is
-  // equivalent if it is also a Date object that refers to the same time.
-  } else if (util.isDate(actual) && util.isDate(expected)) {
-    return actual.getTime() === expected.getTime();
+  "OP_PUBKEYHASH": 253,
+  "OP_PUBKEY": 254,
+  "OP_INVALIDOPCODE": 255
+}
 
-  // 7.3 If the expected value is a RegExp object, the actual value is
-  // equivalent if it is also a RegExp object with the same source and
-  // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
-  } else if (util.isRegExp(actual) && util.isRegExp(expected)) {
-    return actual.source === expected.source &&
-           actual.global === expected.global &&
-           actual.multiline === expected.multiline &&
-           actual.lastIndex === expected.lastIndex &&
-           actual.ignoreCase === expected.ignoreCase;
+},{}],43:[function(require,module,exports){
+var OPS = require('./index.json')
 
-  // 7.4. Other pairs that do not both pass typeof value == 'object',
-  // equivalence is determined by ==.
-  } else if ((actual === null || typeof actual !== 'object') &&
-             (expected === null || typeof expected !== 'object')) {
-    return strict ? actual === expected : actual == expected;
+var map = {}
+for (var op in OPS) {
+  var code = OPS[op]
+  map[code] = op
+}
 
-  // If both values are instances of typed arrays, wrap their underlying
-  // ArrayBuffers in a Buffer each to increase performance
-  // This optimization requires the arrays to have the same type as checked by
-  // Object.prototype.toString (aka pToString). Never perform binary
-  // comparisons for Float*Arrays, though, since e.g. +0 === -0 but their
-  // bit patterns are not identical.
-  } else if (isView(actual) && isView(expected) &&
-             pToString(actual) === pToString(expected) &&
-             !(actual instanceof Float32Array ||
-               actual instanceof Float64Array)) {
-    return compare(new Uint8Array(actual.buffer),
-                   new Uint8Array(expected.buffer)) === 0;
+module.exports = map
 
-  // 7.5 For all other Object pairs, including Array objects, equivalence is
-  // determined by having the same number of owned properties (as verified
-  // with Object.prototype.hasOwnProperty.call), the same set of keys
-  // (although not necessarily the same order), equivalent values for every
-  // corresponding key, and an identical 'prototype' property. Note: this
-  // accounts for both named and indexed properties on Arrays.
-  } else if (isBuffer(actual) !== isBuffer(expected)) {
-    return false;
-  } else {
-    memos = memos || {actual: [], expected: []};
+},{"./index.json":42}],44:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var bech32 = require('bech32')
+var bs58check = require('bs58check')
+var bscript = require('./script')
+var btemplates = require('./templates')
+var networks = require('./networks')
+var typeforce = require('typeforce')
+var types = require('./types')
 
-    var actualIndex = memos.actual.indexOf(actual);
-    if (actualIndex !== -1) {
-      if (actualIndex === memos.expected.indexOf(expected)) {
-        return true;
-      }
-    }
+function fromBase58Check (address) {
+  var payload = bs58check.decode(address)
 
-    memos.actual.push(actual);
-    memos.expected.push(expected);
+  // TODO: 4.0.0, move to "toOutputScript"
+  if (payload.length < 21) throw new TypeError(address + ' is too short')
+  if (payload.length > 21) throw new TypeError(address + ' is too long')
 
-    return objEquiv(actual, expected, strict, memos);
-  }
-}
+  var version = payload.readUInt8(0)
+  var hash = payload.slice(1)
 
-function isArguments(object) {
-  return Object.prototype.toString.call(object) == '[object Arguments]';
+  return { version: version, hash: hash }
 }
 
-function objEquiv(a, b, strict, actualVisitedObjects) {
-  if (a === null || a === undefined || b === null || b === undefined)
-    return false;
-  // if one is a primitive, the other must be same
-  if (util.isPrimitive(a) || util.isPrimitive(b))
-    return a === b;
-  if (strict && Object.getPrototypeOf(a) !== Object.getPrototypeOf(b))
-    return false;
-  var aIsArgs = isArguments(a);
-  var bIsArgs = isArguments(b);
-  if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
-    return false;
-  if (aIsArgs) {
-    a = pSlice.call(a);
-    b = pSlice.call(b);
-    return _deepEqual(a, b, strict);
-  }
-  var ka = objectKeys(a);
-  var kb = objectKeys(b);
-  var key, i;
-  // having the same number of owned properties (keys incorporates
-  // hasOwnProperty)
-  if (ka.length !== kb.length)
-    return false;
-  //the same set of keys (although not necessarily the same order),
-  ka.sort();
-  kb.sort();
-  //~~~cheap key test
-  for (i = ka.length - 1; i >= 0; i--) {
-    if (ka[i] !== kb[i])
-      return false;
-  }
-  //equivalent values for every corresponding key, and
-  //~~~possibly expensive deep test
-  for (i = ka.length - 1; i >= 0; i--) {
-    key = ka[i];
-    if (!_deepEqual(a[key], b[key], strict, actualVisitedObjects))
-      return false;
+function fromBech32 (address) {
+  var result = bech32.decode(address)
+  var data = bech32.fromWords(result.words.slice(1))
+
+  return {
+    version: result.words[0],
+    prefix: result.prefix,
+    data: Buffer.from(data)
   }
-  return true;
 }
 
-// 8. The non-equivalence assertion tests for any deep inequality.
-// assert.notDeepEqual(actual, expected, message_opt);
+function toBase58Check (hash, version) {
+  typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
 
-assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
-  if (_deepEqual(actual, expected, false)) {
-    fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
-  }
-};
+  var payload = Buffer.allocUnsafe(21)
+  payload.writeUInt8(version, 0)
+  hash.copy(payload, 1)
 
-assert.notDeepStrictEqual = notDeepStrictEqual;
-function notDeepStrictEqual(actual, expected, message) {
-  if (_deepEqual(actual, expected, true)) {
-    fail(actual, expected, message, 'notDeepStrictEqual', notDeepStrictEqual);
-  }
+  return bs58check.encode(payload)
 }
 
+function toBech32 (data, version, prefix) {
+  var words = bech32.toWords(data)
+  words.unshift(version)
 
-// 9. The strict equality assertion tests strict equality, as determined by ===.
-// assert.strictEqual(actual, expected, message_opt);
-
-assert.strictEqual = function strictEqual(actual, expected, message) {
-  if (actual !== expected) {
-    fail(actual, expected, message, '===', assert.strictEqual);
-  }
-};
+  return bech32.encode(prefix, words)
+}
 
-// 10. The strict non-equality assertion tests for strict inequality, as
-// determined by !==.  assert.notStrictEqual(actual, expected, message_opt);
+function fromOutputScript (outputScript, network) {
+  network = network || networks.bitcoin
 
-assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
-  if (actual === expected) {
-    fail(actual, expected, message, '!==', assert.notStrictEqual);
-  }
-};
+  if (btemplates.pubKeyHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(3, 23), network.pubKeyHash)
+  if (btemplates.scriptHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(2, 22), network.scriptHash)
+  if (btemplates.witnessPubKeyHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 22), 0, network.bech32)
+  if (btemplates.witnessScriptHash.output.check(outputScript)) return toBech32(bscript.compile(outputScript).slice(2, 34), 0, network.bech32)
 
-function expectedException(actual, expected) {
-  if (!actual || !expected) {
-    return false;
-  }
+  throw new Error(bscript.toASM(outputScript) + ' has no matching Address')
+}
 
-  if (Object.prototype.toString.call(expected) == '[object RegExp]') {
-    return expected.test(actual);
-  }
+function toOutputScript (address, network) {
+  network = network || networks.bitcoin
 
+  var decode
   try {
-    if (actual instanceof expected) {
-      return true;
-    }
-  } catch (e) {
-    // Ignore.  The instanceof check doesn't work for arrow functions.
-  }
+    decode = fromBase58Check(address)
+  } catch (e) {}
 
-  if (Error.isPrototypeOf(expected)) {
-    return false;
+  if (decode) {
+    if (decode.version === network.pubKeyHash) return btemplates.pubKeyHash.output.encode(decode.hash)
+    if (decode.version === network.scriptHash) return btemplates.scriptHash.output.encode(decode.hash)
+  } else {
+    try {
+      decode = fromBech32(address)
+    } catch (e) {}
+
+    if (decode) {
+      if (decode.prefix !== network.bech32) throw new Error(address + ' has an invalid prefix')
+      if (decode.version === 0) {
+        if (decode.data.length === 20) return btemplates.witnessPubKeyHash.output.encode(decode.data)
+        if (decode.data.length === 32) return btemplates.witnessScriptHash.output.encode(decode.data)
+      }
+    }
   }
 
-  return expected.call({}, actual) === true;
+  throw new Error(address + ' has no matching Script')
 }
 
-function _tryBlock(block) {
-  var error;
-  try {
-    block();
-  } catch (e) {
-    error = e;
-  }
-  return error;
+module.exports = {
+  fromBase58Check: fromBase58Check,
+  fromBech32: fromBech32,
+  fromOutputScript: fromOutputScript,
+  toBase58Check: toBase58Check,
+  toBech32: toBech32,
+  toOutputScript: toOutputScript
 }
 
-function _throws(shouldThrow, block, expected, message) {
-  var actual;
-
-  if (typeof block !== 'function') {
-    throw new TypeError('"block" argument must be a function');
-  }
+},{"./networks":53,"./script":54,"./templates":56,"./types":80,"bech32":36,"bs58check":85,"safe-buffer":128,"typeforce":139}],45:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var bcrypto = require('./crypto')
+var fastMerkleRoot = require('merkle-lib/fastRoot')
+var typeforce = require('typeforce')
+var types = require('./types')
+var varuint = require('varuint-bitcoin')
 
-  if (typeof expected === 'string') {
-    message = expected;
-    expected = null;
-  }
+var Transaction = require('./transaction')
 
-  actual = _tryBlock(block);
+function Block () {
+  this.version = 1
+  this.prevHash = null
+  this.merkleRoot = null
+  this.timestamp = 0
+  this.bits = 0
+  this.nonce = 0
+}
 
-  message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
-            (message ? ' ' + message : '.');
+Block.fromBuffer = function (buffer) {
+  if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)')
 
-  if (shouldThrow && !actual) {
-    fail(actual, expected, 'Missing expected exception' + message);
+  var offset = 0
+  function readSlice (n) {
+    offset += n
+    return buffer.slice(offset - n, offset)
   }
 
-  var userProvidedMessage = typeof message === 'string';
-  var isUnwantedException = !shouldThrow && util.isError(actual);
-  var isUnexpectedException = !shouldThrow && actual && !expected;
-
-  if ((isUnwantedException &&
-      userProvidedMessage &&
-      expectedException(actual, expected)) ||
-      isUnexpectedException) {
-    fail(actual, expected, 'Got unwanted exception' + message);
+  function readUInt32 () {
+    var i = buffer.readUInt32LE(offset)
+    offset += 4
+    return i
   }
 
-  if ((shouldThrow && actual && expected &&
-      !expectedException(actual, expected)) || (!shouldThrow && actual)) {
-    throw actual;
+  function readInt32 () {
+    var i = buffer.readInt32LE(offset)
+    offset += 4
+    return i
   }
-}
 
-// 11. Expected to throw an error:
-// assert.throws(block, Error_opt, message_opt);
-
-assert.throws = function(block, /*optional*/error, /*optional*/message) {
-  _throws(true, block, error, message);
-};
-
-// EXTENSION! This is annoying to write outside this module.
-assert.doesNotThrow = function(block, /*optional*/error, /*optional*/message) {
-  _throws(false, block, error, message);
-};
+  var block = new Block()
+  block.version = readInt32()
+  block.prevHash = readSlice(32)
+  block.merkleRoot = readSlice(32)
+  block.timestamp = readUInt32()
+  block.bits = readUInt32()
+  block.nonce = readUInt32()
 
-assert.ifError = function(err) { if (err) throw err; };
+  if (buffer.length === 80) return block
 
-var objectKeys = Object.keys || function (obj) {
-  var keys = [];
-  for (var key in obj) {
-    if (hasOwn.call(obj, key)) keys.push(key);
+  function readVarInt () {
+    var vi = varuint.decode(buffer, offset)
+    offset += varuint.decode.bytes
+    return vi
   }
-  return keys;
-};
 
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"util/":32}],2:[function(require,module,exports){
-'use strict'
+  function readTransaction () {
+    var tx = Transaction.fromBuffer(buffer.slice(offset), true)
+    offset += tx.byteLength()
+    return tx
+  }
 
-exports.byteLength = byteLength
-exports.toByteArray = toByteArray
-exports.fromByteArray = fromByteArray
+  var nTransactions = readVarInt()
+  block.transactions = []
 
-var lookup = []
-var revLookup = []
-var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
+  for (var i = 0; i < nTransactions; ++i) {
+    var tx = readTransaction()
+    block.transactions.push(tx)
+  }
 
-var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
-for (var i = 0, len = code.length; i < len; ++i) {
-  lookup[i] = code[i]
-  revLookup[code.charCodeAt(i)] = i
+  return block
 }
 
-revLookup['-'.charCodeAt(0)] = 62
-revLookup['_'.charCodeAt(0)] = 63
+Block.prototype.byteLength = function (headersOnly) {
+  if (headersOnly || !this.transactions) return 80
 
-function placeHoldersCount (b64) {
-  var len = b64.length
-  if (len % 4 > 0) {
-    throw new Error('Invalid string. Length must be a multiple of 4')
-  }
+  return 80 + varuint.encodingLength(this.transactions.length) + this.transactions.reduce(function (a, x) {
+    return a + x.byteLength()
+  }, 0)
+}
 
-  // the number of equal signs (place holders)
-  // if there are two placeholders, than the two characters before it
-  // represent one byte
-  // if there is only one, then the three characters before it represent 2 bytes
-  // this is just a cheap hack to not do indexOf twice
-  return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
+Block.fromHex = function (hex) {
+  return Block.fromBuffer(Buffer.from(hex, 'hex'))
 }
 
-function byteLength (b64) {
-  // base64 is 4/3 + up to two characters of the original data
-  return (b64.length * 3 / 4) - placeHoldersCount(b64)
+Block.prototype.getHash = function () {
+  return bcrypto.hash256(this.toBuffer(true))
 }
 
-function toByteArray (b64) {
-  var i, l, tmp, placeHolders, arr
-  var len = b64.length
-  placeHolders = placeHoldersCount(b64)
+Block.prototype.getId = function () {
+  return this.getHash().reverse().toString('hex')
+}
 
-  arr = new Arr((len * 3 / 4) - placeHolders)
+Block.prototype.getUTCDate = function () {
+  var date = new Date(0) // epoch
+  date.setUTCSeconds(this.timestamp)
 
-  // if there are placeholders, only get up to the last complete 4 chars
-  l = placeHolders > 0 ? len - 4 : len
+  return date
+}
 
-  var L = 0
+// TODO: buffer, offset compatibility
+Block.prototype.toBuffer = function (headersOnly) {
+  var buffer = Buffer.allocUnsafe(this.byteLength(headersOnly))
 
-  for (i = 0; i < l; i += 4) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
-    arr[L++] = (tmp >> 16) & 0xFF
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
+  var offset = 0
+  function writeSlice (slice) {
+    slice.copy(buffer, offset)
+    offset += slice.length
   }
 
-  if (placeHolders === 2) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
-    arr[L++] = tmp & 0xFF
-  } else if (placeHolders === 1) {
-    tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
-    arr[L++] = (tmp >> 8) & 0xFF
-    arr[L++] = tmp & 0xFF
+  function writeInt32 (i) {
+    buffer.writeInt32LE(i, offset)
+    offset += 4
+  }
+  function writeUInt32 (i) {
+    buffer.writeUInt32LE(i, offset)
+    offset += 4
   }
 
-  return arr
+  writeInt32(this.version)
+  writeSlice(this.prevHash)
+  writeSlice(this.merkleRoot)
+  writeUInt32(this.timestamp)
+  writeUInt32(this.bits)
+  writeUInt32(this.nonce)
+
+  if (headersOnly || !this.transactions) return buffer
+
+  varuint.encode(this.transactions.length, buffer, offset)
+  offset += varuint.encode.bytes
+
+  this.transactions.forEach(function (tx) {
+    var txSize = tx.byteLength() // TODO: extract from toBuffer?
+    tx.toBuffer(buffer, offset)
+    offset += txSize
+  })
+
+  return buffer
 }
 
-function tripletToBase64 (num) {
-  return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
+Block.prototype.toHex = function (headersOnly) {
+  return this.toBuffer(headersOnly).toString('hex')
 }
 
-function encodeChunk (uint8, start, end) {
-  var tmp
-  var output = []
-  for (var i = start; i < end; i += 3) {
-    tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
-    output.push(tripletToBase64(tmp))
-  }
-  return output.join('')
+Block.calculateTarget = function (bits) {
+  var exponent = ((bits & 0xff000000) >> 24) - 3
+  var mantissa = bits & 0x007fffff
+  var target = Buffer.alloc(32, 0)
+  target.writeUInt32BE(mantissa, 28 - exponent)
+  return target
 }
 
-function fromByteArray (uint8) {
-  var tmp
-  var len = uint8.length
-  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
-  var output = ''
-  var parts = []
-  var maxChunkLength = 16383 // must be multiple of 3
+Block.calculateMerkleRoot = function (transactions) {
+  typeforce([{ getHash: types.Function }], transactions)
+  if (transactions.length === 0) throw TypeError('Cannot compute merkle root for zero transactions')
 
-  // go through the array every three bytes, we'll deal with trailing stuff later
-  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
-    parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
-  }
+  var hashes = transactions.map(function (transaction) {
+    return transaction.getHash()
+  })
 
-  // pad the end with zeros, but make sure to not forget the extra bytes
-  if (extraBytes === 1) {
-    tmp = uint8[len - 1]
-    output += lookup[tmp >> 2]
-    output += lookup[(tmp << 4) & 0x3F]
-    output += '=='
-  } else if (extraBytes === 2) {
-    tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
-    output += lookup[tmp >> 10]
-    output += lookup[(tmp >> 4) & 0x3F]
-    output += lookup[(tmp << 2) & 0x3F]
-    output += '='
-  }
+  return fastMerkleRoot(hashes, bcrypto.hash256)
+}
 
-  parts.push(output)
+Block.prototype.checkMerkleRoot = function () {
+  if (!this.transactions) return false
 
-  return parts.join('')
+  var actualMerkleRoot = Block.calculateMerkleRoot(this.transactions)
+  return this.merkleRoot.compare(actualMerkleRoot) === 0
 }
 
-},{}],3:[function(require,module,exports){
+Block.prototype.checkProofOfWork = function () {
+  var hash = this.getHash().reverse()
+  var target = Block.calculateTarget(this.bits)
 
-},{}],4:[function(require,module,exports){
-/*!
- * The buffer module from node.js, for the browser.
- *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
- * @license  MIT
- */
-/* eslint-disable no-proto */
+  return hash.compare(target) <= 0
+}
 
-'use strict'
+module.exports = Block
 
-var base64 = require('base64-js')
-var ieee754 = require('ieee754')
+},{"./crypto":47,"./transaction":78,"./types":80,"merkle-lib/fastRoot":122,"safe-buffer":128,"typeforce":139,"varuint-bitcoin":141}],46:[function(require,module,exports){
+var pushdata = require('pushdata-bitcoin')
+var varuint = require('varuint-bitcoin')
 
-exports.Buffer = Buffer
-exports.SlowBuffer = SlowBuffer
-exports.INSPECT_MAX_BYTES = 50
+// https://github.com/feross/buffer/blob/master/index.js#L1127
+function verifuint (value, max) {
+  if (typeof value !== 'number') throw new Error('cannot write a non-number as a number')
+  if (value < 0) throw new Error('specified a negative value for writing an unsigned value')
+  if (value > max) throw new Error('RangeError: value out of range')
+  if (Math.floor(value) !== value) throw new Error('value has a fractional component')
+}
 
-var K_MAX_LENGTH = 0x7fffffff
-exports.kMaxLength = K_MAX_LENGTH
+function readUInt64LE (buffer, offset) {
+  var a = buffer.readUInt32LE(offset)
+  var b = buffer.readUInt32LE(offset + 4)
+  b *= 0x100000000
 
-/**
- * If `Buffer.TYPED_ARRAY_SUPPORT`:
- *   === true    Use Uint8Array implementation (fastest)
- *   === false   Print warning and recommend using `buffer` v4.x which has an Object
- *               implementation (most compatible, even IE6)
- *
- * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
- * Opera 11.6+, iOS 4.2+.
- *
- * We report that the browser does not support typed arrays if the are not subclassable
- * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
- * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
- * for __proto__ and has a buggy typed array implementation.
- */
-Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()
+  verifuint(b + a, 0x001fffffffffffff)
 
-if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
-    typeof console.error === 'function') {
-  console.error(
-    'This browser lacks typed array (Uint8Array) support which is required by ' +
-    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
-  )
+  return b + a
 }
 
-function typedArraySupport () {
-  // Can typed array instances can be augmented?
-  try {
-    var arr = new Uint8Array(1)
-    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
-    return arr.foo() === 42
-  } catch (e) {
-    return false
-  }
+function writeUInt64LE (buffer, value, offset) {
+  verifuint(value, 0x001fffffffffffff)
+
+  buffer.writeInt32LE(value & -1, offset)
+  buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4)
+  return offset + 8
 }
 
-function createBuffer (length) {
-  if (length > K_MAX_LENGTH) {
-    throw new RangeError('Invalid typed array length')
+// TODO: remove in 4.0.0?
+function readVarInt (buffer, offset) {
+  var result = varuint.decode(buffer, offset)
+
+  return {
+    number: result,
+    size: varuint.decode.bytes
   }
-  // Return an augmented `Uint8Array` instance
-  var buf = new Uint8Array(length)
-  buf.__proto__ = Buffer.prototype
-  return buf
 }
 
-/**
- * The Buffer constructor returns instances of `Uint8Array` that have their
- * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
- * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
- * and the `Uint8Array` methods. Square bracket notation works as expected -- it
- * returns a single octet.
- *
- * The `Uint8Array` prototype remains unmodified.
- */
+// TODO: remove in 4.0.0?
+function writeVarInt (buffer, number, offset) {
+  varuint.encode(number, buffer, offset)
+  return varuint.encode.bytes
+}
 
-function Buffer (arg, encodingOrOffset, length) {
-  // Common case.
-  if (typeof arg === 'number') {
-    if (typeof encodingOrOffset === 'string') {
-      throw new Error(
-        'If encoding is specified then the first argument must be a string'
-      )
-    }
-    return allocUnsafe(arg)
-  }
-  return from(arg, encodingOrOffset, length)
+module.exports = {
+  pushDataSize: pushdata.encodingLength,
+  readPushDataInt: pushdata.decode,
+  readUInt64LE: readUInt64LE,
+  readVarInt: readVarInt,
+  varIntBuffer: varuint.encode,
+  varIntSize: varuint.encodingLength,
+  writePushDataInt: pushdata.encode,
+  writeUInt64LE: writeUInt64LE,
+  writeVarInt: writeVarInt
 }
 
-// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
-if (typeof Symbol !== 'undefined' && Symbol.species &&
-    Buffer[Symbol.species] === Buffer) {
-  Object.defineProperty(Buffer, Symbol.species, {
-    value: null,
-    configurable: true,
-    enumerable: false,
-    writable: false
-  })
+},{"pushdata-bitcoin":125,"varuint-bitcoin":141}],47:[function(require,module,exports){
+var createHash = require('create-hash')
+
+function ripemd160 (buffer) {
+  return createHash('rmd160').update(buffer).digest()
 }
 
-Buffer.poolSize = 8192 // not used by this implementation
+function sha1 (buffer) {
+  return createHash('sha1').update(buffer).digest()
+}
 
-function from (value, encodingOrOffset, length) {
-  if (typeof value === 'number') {
-    throw new TypeError('"value" argument must not be a number')
-  }
+function sha256 (buffer) {
+  return createHash('sha256').update(buffer).digest()
+}
+
+function hash160 (buffer) {
+  return ripemd160(sha256(buffer))
+}
+
+function hash256 (buffer) {
+  return sha256(sha256(buffer))
+}
+
+module.exports = {
+  hash160: hash160,
+  hash256: hash256,
+  ripemd160: ripemd160,
+  sha1: sha1,
+  sha256: sha256
+}
+
+},{"create-hash":87}],48:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var createHmac = require('create-hmac')
+var typeforce = require('typeforce')
+var types = require('./types')
+
+var BigInteger = require('bigi')
+var ECSignature = require('./ecsignature')
+
+var ZERO = Buffer.alloc(1, 0)
+var ONE = Buffer.alloc(1, 1)
+
+var ecurve = require('ecurve')
+var secp256k1 = ecurve.getCurveByName('secp256k1')
+
+// https://tools.ietf.org/html/rfc6979#section-3.2
+function deterministicGenerateK (hash, x, checkSig) {
+  typeforce(types.tuple(
+    types.Hash256bit,
+    types.Buffer256bit,
+    types.Function
+  ), arguments)
+
+  // Step A, ignored as hash already provided
+  // Step B
+  // Step C
+  var k = Buffer.alloc(32, 0)
+  var v = Buffer.alloc(32, 1)
+
+  // Step D
+  k = createHmac('sha256', k)
+    .update(v)
+    .update(ZERO)
+    .update(x)
+    .update(hash)
+    .digest()
+
+  // Step E
+  v = createHmac('sha256', k).update(v).digest()
+
+  // Step F
+  k = createHmac('sha256', k)
+    .update(v)
+    .update(ONE)
+    .update(x)
+    .update(hash)
+    .digest()
 
-  if (value instanceof ArrayBuffer) {
-    return fromArrayBuffer(value, encodingOrOffset, length)
-  }
+  // Step G
+  v = createHmac('sha256', k).update(v).digest()
 
-  if (typeof value === 'string') {
-    return fromString(value, encodingOrOffset)
-  }
+  // Step H1/H2a, ignored as tlen === qlen (256 bit)
+  // Step H2b
+  v = createHmac('sha256', k).update(v).digest()
 
-  return fromObject(value)
-}
+  var T = BigInteger.fromBuffer(v)
 
-/**
- * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
- * if value is a number.
- * Buffer.from(str[, encoding])
- * Buffer.from(array)
- * Buffer.from(buffer)
- * Buffer.from(arrayBuffer[, byteOffset[, length]])
- **/
-Buffer.from = function (value, encodingOrOffset, length) {
-  return from(value, encodingOrOffset, length)
-}
+  // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA
+  while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) {
+    k = createHmac('sha256', k)
+      .update(v)
+      .update(ZERO)
+      .digest()
 
-// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
-// https://github.com/feross/buffer/pull/148
-Buffer.prototype.__proto__ = Uint8Array.prototype
-Buffer.__proto__ = Uint8Array
+    v = createHmac('sha256', k).update(v).digest()
 
-function assertSize (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('"size" argument must be a number')
-  } else if (size < 0) {
-    throw new RangeError('"size" argument must not be negative')
+    // Step H1/H2a, again, ignored as tlen === qlen (256 bit)
+    // Step H2b again
+    v = createHmac('sha256', k).update(v).digest()
+    T = BigInteger.fromBuffer(v)
   }
-}
 
-function alloc (size, fill, encoding) {
-  assertSize(size)
-  if (size <= 0) {
-    return createBuffer(size)
-  }
-  if (fill !== undefined) {
-    // Only pay attention to encoding if it's a string. This
-    // prevents accidentally sending in a number that would
-    // be interpretted as a start offset.
-    return typeof encoding === 'string'
-      ? createBuffer(size).fill(fill, encoding)
-      : createBuffer(size).fill(fill)
-  }
-  return createBuffer(size)
+  return T
 }
 
-/**
- * Creates a new filled Buffer instance.
- * alloc(size[, fill[, encoding]])
- **/
-Buffer.alloc = function (size, fill, encoding) {
-  return alloc(size, fill, encoding)
-}
+var N_OVER_TWO = secp256k1.n.shiftRight(1)
 
-function allocUnsafe (size) {
-  assertSize(size)
-  return createBuffer(size < 0 ? 0 : checked(size) | 0)
-}
+function sign (hash, d) {
+  typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments)
 
-/**
- * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
- * */
-Buffer.allocUnsafe = function (size) {
-  return allocUnsafe(size)
-}
-/**
- * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
- */
-Buffer.allocUnsafeSlow = function (size) {
-  return allocUnsafe(size)
-}
+  var x = d.toBuffer(32)
+  var e = BigInteger.fromBuffer(hash)
+  var n = secp256k1.n
+  var G = secp256k1.G
 
-function fromString (string, encoding) {
-  if (typeof encoding !== 'string' || encoding === '') {
-    encoding = 'utf8'
-  }
+  var r, s
+  deterministicGenerateK(hash, x, function (k) {
+    var Q = G.multiply(k)
 
-  if (!Buffer.isEncoding(encoding)) {
-    throw new TypeError('"encoding" must be a valid string encoding')
-  }
+    if (secp256k1.isInfinity(Q)) return false
 
-  var length = byteLength(string, encoding) | 0
-  var buf = createBuffer(length)
+    r = Q.affineX.mod(n)
+    if (r.signum() === 0) return false
 
-  var actual = buf.write(string, encoding)
+    s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n)
+    if (s.signum() === 0) return false
 
-  if (actual !== length) {
-    // Writing a hex string, for example, that contains invalid characters will
-    // cause everything after the first invalid character to be ignored. (e.g.
-    // 'abxxcd' will be treated as 'ab')
-    buf = buf.slice(0, actual)
+    return true
+  })
+
+  // enforce low S values, see bip62: 'low s values in signatures'
+  if (s.compareTo(N_OVER_TWO) > 0) {
+    s = n.subtract(s)
   }
 
-  return buf
+  return new ECSignature(r, s)
 }
 
-function fromArrayLike (array) {
-  var length = array.length < 0 ? 0 : checked(array.length) | 0
-  var buf = createBuffer(length)
-  for (var i = 0; i < length; i += 1) {
-    buf[i] = array[i] & 255
-  }
-  return buf
-}
+function verify (hash, signature, Q) {
+  typeforce(types.tuple(
+    types.Hash256bit,
+    types.ECSignature,
+    types.ECPoint
+  ), arguments)
 
-function fromArrayBuffer (array, byteOffset, length) {
-  if (byteOffset < 0 || array.byteLength < byteOffset) {
-    throw new RangeError('\'offset\' is out of bounds')
-  }
+  var n = secp256k1.n
+  var G = secp256k1.G
 
-  if (array.byteLength < byteOffset + (length || 0)) {
-    throw new RangeError('\'length\' is out of bounds')
-  }
+  var r = signature.r
+  var s = signature.s
 
-  var buf
-  if (byteOffset === undefined && length === undefined) {
-    buf = new Uint8Array(array)
-  } else if (length === undefined) {
-    buf = new Uint8Array(array, byteOffset)
-  } else {
-    buf = new Uint8Array(array, byteOffset, length)
-  }
+  // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1]
+  if (r.signum() <= 0 || r.compareTo(n) >= 0) return false
+  if (s.signum() <= 0 || s.compareTo(n) >= 0) return false
 
-  // Return an augmented `Uint8Array` instance
-  buf.__proto__ = Buffer.prototype
-  return buf
-}
+  // 1.4.2 H = Hash(M), already done by the user
+  // 1.4.3 e = H
+  var e = BigInteger.fromBuffer(hash)
 
-function fromObject (obj) {
-  if (Buffer.isBuffer(obj)) {
-    var len = checked(obj.length) | 0
-    var buf = createBuffer(len)
+  // Compute s^-1
+  var sInv = s.modInverse(n)
 
-    if (buf.length === 0) {
-      return buf
-    }
+  // 1.4.4 Compute u1 = es^−1 mod n
+  //               u2 = rs^−1 mod n
+  var u1 = e.multiply(sInv).mod(n)
+  var u2 = r.multiply(sInv).mod(n)
 
-    obj.copy(buf, 0, 0, len)
-    return buf
-  }
+  // 1.4.5 Compute R = (xR, yR)
+  //               R = u1G + u2Q
+  var R = G.multiplyTwo(u1, Q, u2)
 
-  if (obj) {
-    if (isArrayBufferView(obj) || 'length' in obj) {
-      if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
-        return createBuffer(0)
-      }
-      return fromArrayLike(obj)
-    }
+  // 1.4.5 (cont.) Enforce R is not at infinity
+  if (secp256k1.isInfinity(R)) return false
 
-    if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
-      return fromArrayLike(obj.data)
-    }
-  }
+  // 1.4.6 Convert the field element R.x to an integer
+  var xR = R.affineX
 
-  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
-}
+  // 1.4.7 Set v = xR mod n
+  var v = xR.mod(n)
 
-function checked (length) {
-  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
-  // length is NaN (which is otherwise coerced to zero.)
-  if (length >= K_MAX_LENGTH) {
-    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
-                         'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes')
-  }
-  return length | 0
+  // 1.4.8 If v = r, output "valid", and if v != r, output "invalid"
+  return v.equals(r)
 }
 
-function SlowBuffer (length) {
-  if (+length != length) { // eslint-disable-line eqeqeq
-    length = 0
-  }
-  return Buffer.alloc(+length)
-}
+module.exports = {
+  deterministicGenerateK: deterministicGenerateK,
+  sign: sign,
+  verify: verify,
 
-Buffer.isBuffer = function isBuffer (b) {
-  return b != null && b._isBuffer === true
+  // TODO: remove
+  __curve: secp256k1
 }
 
-Buffer.compare = function compare (a, b) {
-  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
-    throw new TypeError('Arguments must be Buffers')
-  }
+},{"./ecsignature":50,"./types":80,"bigi":39,"create-hmac":90,"ecurve":94,"safe-buffer":128,"typeforce":139}],49:[function(require,module,exports){
+var baddress = require('./address')
+var bcrypto = require('./crypto')
+var ecdsa = require('./ecdsa')
+var randomBytes = require('randombytes')
+var typeforce = require('typeforce')
+var types = require('./types')
+var wif = require('wif')
 
-  if (a === b) return 0
+var NETWORKS = require('./networks')
+var BigInteger = require('bigi')
 
-  var x = a.length
-  var y = b.length
+var ecurve = require('ecurve')
+var secp256k1 = ecdsa.__curve
 
-  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
-    if (a[i] !== b[i]) {
-      x = a[i]
-      y = b[i]
-      break
-    }
+function ECPair (d, Q, options) {
+  if (options) {
+    typeforce({
+      compressed: types.maybe(types.Boolean),
+      network: types.maybe(types.Network)
+    }, options)
   }
 
-  if (x < y) return -1
-  if (y < x) return 1
-  return 0
-}
+  options = options || {}
 
-Buffer.isEncoding = function isEncoding (encoding) {
-  switch (String(encoding).toLowerCase()) {
-    case 'hex':
-    case 'utf8':
-    case 'utf-8':
-    case 'ascii':
-    case 'latin1':
-    case 'binary':
-    case 'base64':
-    case 'ucs2':
-    case 'ucs-2':
-    case 'utf16le':
-    case 'utf-16le':
-      return true
-    default:
-      return false
-  }
-}
+  if (d) {
+    if (d.signum() <= 0) throw new Error('Private key must be greater than 0')
+    if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order')
+    if (Q) throw new TypeError('Unexpected publicKey parameter')
 
-Buffer.concat = function concat (list, length) {
-  if (!Array.isArray(list)) {
-    throw new TypeError('"list" argument must be an Array of Buffers')
-  }
+    this.d = d
+  } else {
+    typeforce(types.ECPoint, Q)
 
-  if (list.length === 0) {
-    return Buffer.alloc(0)
+    this.__Q = Q
   }
 
-  var i
-  if (length === undefined) {
-    length = 0
-    for (i = 0; i < list.length; ++i) {
-      length += list[i].length
-    }
-  }
+  this.compressed = options.compressed === undefined ? true : options.compressed
+  this.network = options.network || NETWORKS.bitcoin
+}
 
-  var buffer = Buffer.allocUnsafe(length)
-  var pos = 0
-  for (i = 0; i < list.length; ++i) {
-    var buf = list[i]
-    if (!Buffer.isBuffer(buf)) {
-      throw new TypeError('"list" argument must be an Array of Buffers')
+Object.defineProperty(ECPair.prototype, 'Q', {
+  get: function () {
+    if (!this.__Q && this.d) {
+      this.__Q = secp256k1.G.multiply(this.d)
     }
-    buf.copy(buffer, pos)
-    pos += buf.length
-  }
-  return buffer
-}
 
-function byteLength (string, encoding) {
-  if (Buffer.isBuffer(string)) {
-    return string.length
-  }
-  if (isArrayBufferView(string) || string instanceof ArrayBuffer) {
-    return string.byteLength
-  }
-  if (typeof string !== 'string') {
-    string = '' + string
+    return this.__Q
   }
+})
 
-  var len = string.length
-  if (len === 0) return 0
+ECPair.fromPublicKeyBuffer = function (buffer, network) {
+  var Q = ecurve.Point.decodeFrom(secp256k1, buffer)
 
-  // Use a for loop to avoid recursion
-  var loweredCase = false
-  for (;;) {
-    switch (encoding) {
-      case 'ascii':
-      case 'latin1':
-      case 'binary':
-        return len
-      case 'utf8':
-      case 'utf-8':
-      case undefined:
-        return utf8ToBytes(string).length
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return len * 2
-      case 'hex':
-        return len >>> 1
-      case 'base64':
-        return base64ToBytes(string).length
-      default:
-        if (loweredCase) return utf8ToBytes(string).length // assume utf8
-        encoding = ('' + encoding).toLowerCase()
-        loweredCase = true
-    }
-  }
+  return new ECPair(null, Q, {
+    compressed: Q.compressed,
+    network: network
+  })
 }
-Buffer.byteLength = byteLength
-
-function slowToString (encoding, start, end) {
-  var loweredCase = false
-
-  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
-  // property of a typed array.
 
-  // This behaves neither like String nor Uint8Array in that we set start/end
-  // to their upper/lower bounds if the value passed is out of range.
-  // undefined is handled specially as per ECMA-262 6th Edition,
-  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
-  if (start === undefined || start < 0) {
-    start = 0
-  }
-  // Return early if start > this.length. Done here to prevent potential uint32
-  // coercion fail below.
-  if (start > this.length) {
-    return ''
-  }
+ECPair.fromWIF = function (string, network) {
+  var decoded = wif.decode(string)
+  var version = decoded.version
 
-  if (end === undefined || end > this.length) {
-    end = this.length
-  }
+  // list of networks?
+  if (types.Array(network)) {
+    network = network.filter(function (x) {
+      return version === x.wif
+    }).pop()
 
-  if (end <= 0) {
-    return ''
-  }
+    if (!network) throw new Error('Unknown network version')
 
-  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
-  end >>>= 0
-  start >>>= 0
+  // otherwise, assume a network object (or default to bitcoin)
+  } else {
+    network = network || NETWORKS.bitcoin
 
-  if (end <= start) {
-    return ''
+    if (version !== network.wif) throw new Error('Invalid network version')
   }
 
-  if (!encoding) encoding = 'utf8'
-
-  while (true) {
-    switch (encoding) {
-      case 'hex':
-        return hexSlice(this, start, end)
-
-      case 'utf8':
-      case 'utf-8':
-        return utf8Slice(this, start, end)
-
-      case 'ascii':
-        return asciiSlice(this, start, end)
-
-      case 'latin1':
-      case 'binary':
-        return latin1Slice(this, start, end)
-
-      case 'base64':
-        return base64Slice(this, start, end)
-
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return utf16leSlice(this, start, end)
+  var d = BigInteger.fromBuffer(decoded.privateKey)
 
-      default:
-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
-        encoding = (encoding + '').toLowerCase()
-        loweredCase = true
-    }
-  }
+  return new ECPair(d, null, {
+    compressed: decoded.compressed,
+    network: network
+  })
 }
 
-// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
-// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
-// reliably in a browserify context because there could be multiple different
-// copies of the 'buffer' package in use. This method works even for Buffer
-// instances that were created from another copy of the `buffer` package.
-// See: https://github.com/feross/buffer/issues/154
-Buffer.prototype._isBuffer = true
+ECPair.makeRandom = function (options) {
+  options = options || {}
 
-function swap (b, n, m) {
-  var i = b[n]
-  b[n] = b[m]
-  b[m] = i
-}
+  var rng = options.rng || randomBytes
 
-Buffer.prototype.swap16 = function swap16 () {
-  var len = this.length
-  if (len % 2 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 16-bits')
-  }
-  for (var i = 0; i < len; i += 2) {
-    swap(this, i, i + 1)
-  }
-  return this
-}
+  var d
+  do {
+    var buffer = rng(32)
+    typeforce(types.Buffer256bit, buffer)
 
-Buffer.prototype.swap32 = function swap32 () {
-  var len = this.length
-  if (len % 4 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 32-bits')
-  }
-  for (var i = 0; i < len; i += 4) {
-    swap(this, i, i + 3)
-    swap(this, i + 1, i + 2)
-  }
-  return this
+    d = BigInteger.fromBuffer(buffer)
+  } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0)
+
+  return new ECPair(d, null, options)
 }
 
-Buffer.prototype.swap64 = function swap64 () {
-  var len = this.length
-  if (len % 8 !== 0) {
-    throw new RangeError('Buffer size must be a multiple of 64-bits')
-  }
-  for (var i = 0; i < len; i += 8) {
-    swap(this, i, i + 7)
-    swap(this, i + 1, i + 6)
-    swap(this, i + 2, i + 5)
-    swap(this, i + 3, i + 4)
-  }
-  return this
+ECPair.prototype.getAddress = function () {
+  return baddress.toBase58Check(bcrypto.hash160(this.getPublicKeyBuffer()), this.getNetwork().pubKeyHash)
 }
 
-Buffer.prototype.toString = function toString () {
-  var length = this.length
-  if (length === 0) return ''
-  if (arguments.length === 0) return utf8Slice(this, 0, length)
-  return slowToString.apply(this, arguments)
+ECPair.prototype.getNetwork = function () {
+  return this.network
 }
 
-Buffer.prototype.equals = function equals (b) {
-  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
-  if (this === b) return true
-  return Buffer.compare(this, b) === 0
+ECPair.prototype.getPublicKeyBuffer = function () {
+  return this.Q.getEncoded(this.compressed)
 }
 
-Buffer.prototype.inspect = function inspect () {
-  var str = ''
-  var max = exports.INSPECT_MAX_BYTES
-  if (this.length > 0) {
-    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
-    if (this.length > max) str += ' ... '
-  }
-  return '<Buffer ' + str + '>'
+ECPair.prototype.sign = function (hash) {
+  if (!this.d) throw new Error('Missing private key')
+
+  return ecdsa.sign(hash, this.d)
 }
 
-Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
-  if (!Buffer.isBuffer(target)) {
-    throw new TypeError('Argument must be a Buffer')
-  }
+ECPair.prototype.toWIF = function () {
+  if (!this.d) throw new Error('Missing private key')
 
-  if (start === undefined) {
-    start = 0
-  }
-  if (end === undefined) {
-    end = target ? target.length : 0
-  }
-  if (thisStart === undefined) {
-    thisStart = 0
-  }
-  if (thisEnd === undefined) {
-    thisEnd = this.length
-  }
+  return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed)
+}
 
-  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
-    throw new RangeError('out of range index')
-  }
+ECPair.prototype.verify = function (hash, signature) {
+  return ecdsa.verify(hash, signature, this.Q)
+}
 
-  if (thisStart >= thisEnd && start >= end) {
-    return 0
-  }
-  if (thisStart >= thisEnd) {
-    return -1
-  }
-  if (start >= end) {
-    return 1
-  }
+module.exports = ECPair
 
-  start >>>= 0
-  end >>>= 0
-  thisStart >>>= 0
-  thisEnd >>>= 0
+},{"./address":44,"./crypto":47,"./ecdsa":48,"./networks":53,"./types":80,"bigi":39,"ecurve":94,"randombytes":126,"typeforce":139,"wif":142}],50:[function(require,module,exports){
+(function (Buffer){
+var bip66 = require('bip66')
+var typeforce = require('typeforce')
+var types = require('./types')
 
-  if (this === target) return 0
+var BigInteger = require('bigi')
 
-  var x = thisEnd - thisStart
-  var y = end - start
-  var len = Math.min(x, y)
+function ECSignature (r, s) {
+  typeforce(types.tuple(types.BigInt, types.BigInt), arguments)
 
-  var thisCopy = this.slice(thisStart, thisEnd)
-  var targetCopy = target.slice(start, end)
+  this.r = r
+  this.s = s
+}
 
-  for (var i = 0; i < len; ++i) {
-    if (thisCopy[i] !== targetCopy[i]) {
-      x = thisCopy[i]
-      y = targetCopy[i]
-      break
-    }
-  }
+ECSignature.parseCompact = function (buffer) {
+  typeforce(types.BufferN(65), buffer)
 
-  if (x < y) return -1
-  if (y < x) return 1
-  return 0
-}
+  var flagByte = buffer.readUInt8(0) - 27
+  if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter')
 
-// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
-// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
-//
-// Arguments:
-// - buffer - a Buffer to search
-// - val - a string, Buffer, or number
-// - byteOffset - an index into `buffer`; will be clamped to an int32
-// - encoding - an optional encoding, relevant is val is a string
-// - dir - true for indexOf, false for lastIndexOf
-function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
-  // Empty buffer means no match
-  if (buffer.length === 0) return -1
+  var compressed = !!(flagByte & 4)
+  var recoveryParam = flagByte & 3
+  var signature = ECSignature.fromRSBuffer(buffer.slice(1))
 
-  // Normalize byteOffset
-  if (typeof byteOffset === 'string') {
-    encoding = byteOffset
-    byteOffset = 0
-  } else if (byteOffset > 0x7fffffff) {
-    byteOffset = 0x7fffffff
-  } else if (byteOffset < -0x80000000) {
-    byteOffset = -0x80000000
-  }
-  byteOffset = +byteOffset  // Coerce to Number.
-  if (numberIsNaN(byteOffset)) {
-    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
-    byteOffset = dir ? 0 : (buffer.length - 1)
+  return {
+    compressed: compressed,
+    i: recoveryParam,
+    signature: signature
   }
+}
 
-  // Normalize byteOffset: negative offsets start from the end of the buffer
-  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
-  if (byteOffset >= buffer.length) {
-    if (dir) return -1
-    else byteOffset = buffer.length - 1
-  } else if (byteOffset < 0) {
-    if (dir) byteOffset = 0
-    else return -1
-  }
+ECSignature.fromRSBuffer = function (buffer) {
+  typeforce(types.BufferN(64), buffer)
 
-  // Normalize val
-  if (typeof val === 'string') {
-    val = Buffer.from(val, encoding)
-  }
+  var r = BigInteger.fromBuffer(buffer.slice(0, 32))
+  var s = BigInteger.fromBuffer(buffer.slice(32, 64))
+  return new ECSignature(r, s)
+}
 
-  // Finally, search either indexOf (if dir is true) or lastIndexOf
-  if (Buffer.isBuffer(val)) {
-    // Special case: looking for empty string/buffer always fails
-    if (val.length === 0) {
-      return -1
-    }
-    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
-  } else if (typeof val === 'number') {
-    val = val & 0xFF // Search for a byte value [0-255]
-    if (typeof Uint8Array.prototype.indexOf === 'function') {
-      if (dir) {
-        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
-      } else {
-        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
-      }
-    }
-    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
-  }
+ECSignature.fromDER = function (buffer) {
+  var decode = bip66.decode(buffer)
+  var r = BigInteger.fromDERInteger(decode.r)
+  var s = BigInteger.fromDERInteger(decode.s)
 
-  throw new TypeError('val must be string, number or Buffer')
+  return new ECSignature(r, s)
 }
 
-function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
-  var indexSize = 1
-  var arrLength = arr.length
-  var valLength = val.length
+// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed)
+ECSignature.parseScriptSignature = function (buffer) {
+  var hashType = buffer.readUInt8(buffer.length - 1)
+  var hashTypeMod = hashType & ~0x80
 
-  if (encoding !== undefined) {
-    encoding = String(encoding).toLowerCase()
-    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
-        encoding === 'utf16le' || encoding === 'utf-16le') {
-      if (arr.length < 2 || val.length < 2) {
-        return -1
-      }
-      indexSize = 2
-      arrLength /= 2
-      valLength /= 2
-      byteOffset /= 2
-    }
-  }
+  if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType)
 
-  function read (buf, i) {
-    if (indexSize === 1) {
-      return buf[i]
-    } else {
-      return buf.readUInt16BE(i * indexSize)
-    }
+  return {
+    signature: ECSignature.fromDER(buffer.slice(0, -1)),
+    hashType: hashType
   }
+}
 
-  var i
-  if (dir) {
-    var foundIndex = -1
-    for (i = byteOffset; i < arrLength; i++) {
-      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
-        if (foundIndex === -1) foundIndex = i
-        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
-      } else {
-        if (foundIndex !== -1) i -= i - foundIndex
-        foundIndex = -1
-      }
-    }
-  } else {
-    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
-    for (i = byteOffset; i >= 0; i--) {
-      var found = true
-      for (var j = 0; j < valLength; j++) {
-        if (read(arr, i + j) !== read(val, j)) {
-          found = false
-          break
-        }
-      }
-      if (found) return i
-    }
+ECSignature.prototype.toCompact = function (i, compressed) {
+  if (compressed) {
+    i += 4
   }
 
-  return -1
-}
+  i += 27
 
-Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
-  return this.indexOf(val, byteOffset, encoding) !== -1
+  var buffer = Buffer.alloc(65)
+  buffer.writeUInt8(i, 0)
+  this.toRSBuffer(buffer, 1)
+  return buffer
 }
 
-Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
-  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
+ECSignature.prototype.toDER = function () {
+  var r = Buffer.from(this.r.toDERInteger())
+  var s = Buffer.from(this.s.toDERInteger())
+
+  return bip66.encode(r, s)
 }
 
-Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
-  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
+ECSignature.prototype.toRSBuffer = function (buffer, offset) {
+  buffer = buffer || Buffer.alloc(64)
+  this.r.toBuffer(32).copy(buffer, offset)
+  this.s.toBuffer(32).copy(buffer, offset + 32)
+  return buffer
 }
 
-function hexWrite (buf, string, offset, length) {
-  offset = Number(offset) || 0
-  var remaining = buf.length - offset
-  if (!length) {
-    length = remaining
-  } else {
-    length = Number(length)
-    if (length > remaining) {
-      length = remaining
-    }
-  }
+ECSignature.prototype.toScriptSignature = function (hashType) {
+  var hashTypeMod = hashType & ~0x80
+  if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType)
 
-  // must be an even number of digits
-  var strLen = string.length
-  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
+  var hashTypeBuffer = Buffer.alloc(1)
+  hashTypeBuffer.writeUInt8(hashType, 0)
 
-  if (length > strLen / 2) {
-    length = strLen / 2
-  }
-  for (var i = 0; i < length; ++i) {
-    var parsed = parseInt(string.substr(i * 2, 2), 16)
-    if (numberIsNaN(parsed)) return i
-    buf[offset + i] = parsed
-  }
-  return i
+  return Buffer.concat([this.toDER(), hashTypeBuffer])
 }
 
-function utf8Write (buf, string, offset, length) {
-  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
-}
+module.exports = ECSignature
 
-function asciiWrite (buf, string, offset, length) {
-  return blitBuffer(asciiToBytes(string), buf, offset, length)
-}
+}).call(this,require("buffer").Buffer)
+},{"./types":80,"bigi":39,"bip66":41,"buffer":5,"typeforce":139}],51:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var base58check = require('bs58check')
+var bcrypto = require('./crypto')
+var createHmac = require('create-hmac')
+var typeforce = require('typeforce')
+var types = require('./types')
+var NETWORKS = require('./networks')
 
-function latin1Write (buf, string, offset, length) {
-  return asciiWrite(buf, string, offset, length)
-}
+var BigInteger = require('bigi')
+var ECPair = require('./ecpair')
 
-function base64Write (buf, string, offset, length) {
-  return blitBuffer(base64ToBytes(string), buf, offset, length)
-}
+var ecurve = require('ecurve')
+var curve = ecurve.getCurveByName('secp256k1')
 
-function ucs2Write (buf, string, offset, length) {
-  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
+function HDNode (keyPair, chainCode) {
+  typeforce(types.tuple('ECPair', types.Buffer256bit), arguments)
+
+  if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs')
+
+  this.keyPair = keyPair
+  this.chainCode = chainCode
+  this.depth = 0
+  this.index = 0
+  this.parentFingerprint = 0x00000000
 }
 
-Buffer.prototype.write = function write (string, offset, length, encoding) {
-  // Buffer#write(string)
-  if (offset === undefined) {
-    encoding = 'utf8'
-    length = this.length
-    offset = 0
-  // Buffer#write(string, encoding)
-  } else if (length === undefined && typeof offset === 'string') {
-    encoding = offset
-    length = this.length
-    offset = 0
-  // Buffer#write(string, offset[, length][, encoding])
-  } else if (isFinite(offset)) {
-    offset = offset >>> 0
-    if (isFinite(length)) {
-      length = length >>> 0
-      if (encoding === undefined) encoding = 'utf8'
-    } else {
-      encoding = length
-      length = undefined
-    }
-  } else {
-    throw new Error(
-      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
-    )
-  }
+HDNode.HIGHEST_BIT = 0x80000000
+HDNode.LENGTH = 78
+HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8')
 
-  var remaining = this.length - offset
-  if (length === undefined || length > remaining) length = remaining
+HDNode.fromSeedBuffer = function (seed, network) {
+  typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments)
 
-  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
-    throw new RangeError('Attempt to write outside buffer bounds')
-  }
+  if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits')
+  if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits')
 
-  if (!encoding) encoding = 'utf8'
+  var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest()
+  var IL = I.slice(0, 32)
+  var IR = I.slice(32)
 
-  var loweredCase = false
-  for (;;) {
-    switch (encoding) {
-      case 'hex':
-        return hexWrite(this, string, offset, length)
+  // In case IL is 0 or >= n, the master key is invalid
+  // This is handled by the ECPair constructor
+  var pIL = BigInteger.fromBuffer(IL)
+  var keyPair = new ECPair(pIL, null, {
+    network: network
+  })
 
-      case 'utf8':
-      case 'utf-8':
-        return utf8Write(this, string, offset, length)
+  return new HDNode(keyPair, IR)
+}
 
-      case 'ascii':
-        return asciiWrite(this, string, offset, length)
+HDNode.fromSeedHex = function (hex, network) {
+  return HDNode.fromSeedBuffer(Buffer.from(hex, 'hex'), network)
+}
 
-      case 'latin1':
-      case 'binary':
-        return latin1Write(this, string, offset, length)
+HDNode.fromBase58 = function (string, networks) {
+  var buffer = base58check.decode(string)
+  if (buffer.length !== 78) throw new Error('Invalid buffer length')
 
-      case 'base64':
-        // Warning: maxLength not taken into account in base64Write
-        return base64Write(this, string, offset, length)
+  // 4 bytes: version bytes
+  var version = buffer.readUInt32BE(0)
+  var network
 
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return ucs2Write(this, string, offset, length)
+  // list of networks?
+  if (Array.isArray(networks)) {
+    network = networks.filter(function (x) {
+      return version === x.bip32.private ||
+             version === x.bip32.public
+    }).pop()
 
-      default:
-        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
-        encoding = ('' + encoding).toLowerCase()
-        loweredCase = true
-    }
-  }
-}
+    if (!network) throw new Error('Unknown network version')
 
-Buffer.prototype.toJSON = function toJSON () {
-  return {
-    type: 'Buffer',
-    data: Array.prototype.slice.call(this._arr || this, 0)
+  // otherwise, assume a network object (or default to bitcoin)
+  } else {
+    network = networks || NETWORKS.bitcoin
   }
-}
 
-function base64Slice (buf, start, end) {
-  if (start === 0 && end === buf.length) {
-    return base64.fromByteArray(buf)
-  } else {
-    return base64.fromByteArray(buf.slice(start, end))
+  if (version !== network.bip32.private &&
+    version !== network.bip32.public) throw new Error('Invalid network version')
+
+  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ...
+  var depth = buffer[4]
+
+  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
+  var parentFingerprint = buffer.readUInt32BE(5)
+  if (depth === 0) {
+    if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint')
   }
-}
 
-function utf8Slice (buf, start, end) {
-  end = Math.min(buf.length, end)
-  var res = []
+  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
+  // This is encoded in MSB order. (0x00000000 if master key)
+  var index = buffer.readUInt32BE(9)
+  if (depth === 0 && index !== 0) throw new Error('Invalid index')
 
-  var i = start
-  while (i < end) {
-    var firstByte = buf[i]
-    var codePoint = null
-    var bytesPerSequence = (firstByte > 0xEF) ? 4
-      : (firstByte > 0xDF) ? 3
-      : (firstByte > 0xBF) ? 2
-      : 1
+  // 32 bytes: the chain code
+  var chainCode = buffer.slice(13, 45)
+  var keyPair
 
-    if (i + bytesPerSequence <= end) {
-      var secondByte, thirdByte, fourthByte, tempCodePoint
+  // 33 bytes: private key data (0x00 + k)
+  if (version === network.bip32.private) {
+    if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key')
 
-      switch (bytesPerSequence) {
-        case 1:
-          if (firstByte < 0x80) {
-            codePoint = firstByte
-          }
-          break
-        case 2:
-          secondByte = buf[i + 1]
-          if ((secondByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
-            if (tempCodePoint > 0x7F) {
-              codePoint = tempCodePoint
-            }
-          }
-          break
-        case 3:
-          secondByte = buf[i + 1]
-          thirdByte = buf[i + 2]
-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
-            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
-              codePoint = tempCodePoint
-            }
-          }
-          break
-        case 4:
-          secondByte = buf[i + 1]
-          thirdByte = buf[i + 2]
-          fourthByte = buf[i + 3]
-          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
-            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
-            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
-              codePoint = tempCodePoint
-            }
-          }
-      }
-    }
+    var d = BigInteger.fromBuffer(buffer.slice(46, 78))
+    keyPair = new ECPair(d, null, { network: network })
 
-    if (codePoint === null) {
-      // we did not generate a valid codePoint so insert a
-      // replacement char (U+FFFD) and advance only 1 byte
-      codePoint = 0xFFFD
-      bytesPerSequence = 1
-    } else if (codePoint > 0xFFFF) {
-      // encode to utf16 (surrogate pair dance)
-      codePoint -= 0x10000
-      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
-      codePoint = 0xDC00 | codePoint & 0x3FF
-    }
+  // 33 bytes: public key data (0x02 + X or 0x03 + X)
+  } else {
+    var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78))
+    // Q.compressed is assumed, if somehow this assumption is broken, `new HDNode` will throw
+
+    // Verify that the X coordinate in the public point corresponds to a point on the curve.
+    // If not, the extended public key is invalid.
+    curve.validate(Q)
+
+    keyPair = new ECPair(null, Q, { network: network })
+  }
+
+  var hd = new HDNode(keyPair, chainCode)
+  hd.depth = depth
+  hd.index = index
+  hd.parentFingerprint = parentFingerprint
+
+  return hd
+}
 
-    res.push(codePoint)
-    i += bytesPerSequence
-  }
+HDNode.prototype.getAddress = function () {
+  return this.keyPair.getAddress()
+}
 
-  return decodeCodePointsArray(res)
+HDNode.prototype.getIdentifier = function () {
+  return bcrypto.hash160(this.keyPair.getPublicKeyBuffer())
 }
 
-// Based on http://stackoverflow.com/a/22747272/680742, the browser with
-// the lowest limit is Chrome, with 0x10000 args.
-// We go 1 magnitude less, for safety
-var MAX_ARGUMENTS_LENGTH = 0x1000
+HDNode.prototype.getFingerprint = function () {
+  return this.getIdentifier().slice(0, 4)
+}
 
-function decodeCodePointsArray (codePoints) {
-  var len = codePoints.length
-  if (len <= MAX_ARGUMENTS_LENGTH) {
-    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
-  }
+HDNode.prototype.getNetwork = function () {
+  return this.keyPair.getNetwork()
+}
 
-  // Decode in chunks to avoid "call stack size exceeded".
-  var res = ''
-  var i = 0
-  while (i < len) {
-    res += String.fromCharCode.apply(
-      String,
-      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
-    )
-  }
-  return res
+HDNode.prototype.getPublicKeyBuffer = function () {
+  return this.keyPair.getPublicKeyBuffer()
 }
 
-function asciiSlice (buf, start, end) {
-  var ret = ''
-  end = Math.min(buf.length, end)
+HDNode.prototype.neutered = function () {
+  var neuteredKeyPair = new ECPair(null, this.keyPair.Q, {
+    network: this.keyPair.network
+  })
 
-  for (var i = start; i < end; ++i) {
-    ret += String.fromCharCode(buf[i] & 0x7F)
-  }
-  return ret
+  var neutered = new HDNode(neuteredKeyPair, this.chainCode)
+  neutered.depth = this.depth
+  neutered.index = this.index
+  neutered.parentFingerprint = this.parentFingerprint
+
+  return neutered
 }
 
-function latin1Slice (buf, start, end) {
-  var ret = ''
-  end = Math.min(buf.length, end)
+HDNode.prototype.sign = function (hash) {
+  return this.keyPair.sign(hash)
+}
 
-  for (var i = start; i < end; ++i) {
-    ret += String.fromCharCode(buf[i])
-  }
-  return ret
+HDNode.prototype.verify = function (hash, signature) {
+  return this.keyPair.verify(hash, signature)
 }
 
-function hexSlice (buf, start, end) {
-  var len = buf.length
+HDNode.prototype.toBase58 = function (__isPrivate) {
+  if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0')
 
-  if (!start || start < 0) start = 0
-  if (!end || end < 0 || end > len) end = len
+  // Version
+  var network = this.keyPair.network
+  var version = (!this.isNeutered()) ? network.bip32.private : network.bip32.public
+  var buffer = Buffer.allocUnsafe(78)
 
-  var out = ''
-  for (var i = start; i < end; ++i) {
-    out += toHex(buf[i])
-  }
-  return out
-}
+  // 4 bytes: version bytes
+  buffer.writeUInt32BE(version, 0)
 
-function utf16leSlice (buf, start, end) {
-  var bytes = buf.slice(start, end)
-  var res = ''
-  for (var i = 0; i < bytes.length; i += 2) {
-    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
-  }
-  return res
-}
+  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ....
+  buffer.writeUInt8(this.depth, 4)
 
-Buffer.prototype.slice = function slice (start, end) {
-  var len = this.length
-  start = ~~start
-  end = end === undefined ? len : ~~end
+  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
+  buffer.writeUInt32BE(this.parentFingerprint, 5)
 
-  if (start < 0) {
-    start += len
-    if (start < 0) start = 0
-  } else if (start > len) {
-    start = len
-  }
+  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
+  // This is encoded in big endian. (0x00000000 if master key)
+  buffer.writeUInt32BE(this.index, 9)
 
-  if (end < 0) {
-    end += len
-    if (end < 0) end = 0
-  } else if (end > len) {
-    end = len
-  }
+  // 32 bytes: the chain code
+  this.chainCode.copy(buffer, 13)
 
-  if (end < start) end = start
+  // 33 bytes: the public key or private key data
+  if (!this.isNeutered()) {
+    // 0x00 + k for private keys
+    buffer.writeUInt8(0, 45)
+    this.keyPair.d.toBuffer(32).copy(buffer, 46)
 
-  var newBuf = this.subarray(start, end)
-  // Return an augmented `Uint8Array` instance
-  newBuf.__proto__ = Buffer.prototype
-  return newBuf
-}
+  // 33 bytes: the public key
+  } else {
+    // X9.62 encoding for public keys
+    this.keyPair.getPublicKeyBuffer().copy(buffer, 45)
+  }
 
-/*
- * Need to make sure that buffer isn't trying to write out of bounds.
- */
-function checkOffset (offset, ext, length) {
-  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
-  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
+  return base58check.encode(buffer)
 }
 
-Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions
+HDNode.prototype.derive = function (index) {
+  typeforce(types.UInt32, index)
 
-  var val = this[offset]
-  var mul = 1
-  var i = 0
-  while (++i < byteLength && (mul *= 0x100)) {
-    val += this[offset + i] * mul
+  var isHardened = index >= HDNode.HIGHEST_BIT
+  var data = Buffer.allocUnsafe(37)
+
+  // Hardened child
+  if (isHardened) {
+    if (this.isNeutered()) throw new TypeError('Could not derive hardened child key')
+
+    // data = 0x00 || ser256(kpar) || ser32(index)
+    data[0] = 0x00
+    this.keyPair.d.toBuffer(32).copy(data, 1)
+    data.writeUInt32BE(index, 33)
+
+  // Normal child
+  } else {
+    // data = serP(point(kpar)) || ser32(index)
+    //      = serP(Kpar) || ser32(index)
+    this.keyPair.getPublicKeyBuffer().copy(data, 0)
+    data.writeUInt32BE(index, 33)
   }
 
-  return val
-}
+  var I = createHmac('sha512', this.chainCode).update(data).digest()
+  var IL = I.slice(0, 32)
+  var IR = I.slice(32)
 
-Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    checkOffset(offset, byteLength, this.length)
+  var pIL = BigInteger.fromBuffer(IL)
+
+  // In case parse256(IL) >= n, proceed with the next value for i
+  if (pIL.compareTo(curve.n) >= 0) {
+    return this.derive(index + 1)
   }
 
-  var val = this[offset + --byteLength]
-  var mul = 1
-  while (byteLength > 0 && (mul *= 0x100)) {
-    val += this[offset + --byteLength] * mul
+  // Private parent key -> private child key
+  var derivedKeyPair
+  if (!this.isNeutered()) {
+    // ki = parse256(IL) + kpar (mod n)
+    var ki = pIL.add(this.keyPair.d).mod(curve.n)
+
+    // In case ki == 0, proceed with the next value for i
+    if (ki.signum() === 0) {
+      return this.derive(index + 1)
+    }
+
+    derivedKeyPair = new ECPair(ki, null, {
+      network: this.keyPair.network
+    })
+
+  // Public parent key -> public child key
+  } else {
+    // Ki = point(parse256(IL)) + Kpar
+    //    = G*IL + Kpar
+    var Ki = curve.G.multiply(pIL).add(this.keyPair.Q)
+
+    // In case Ki is the point at infinity, proceed with the next value for i
+    if (curve.isInfinity(Ki)) {
+      return this.derive(index + 1)
+    }
+
+    derivedKeyPair = new ECPair(null, Ki, {
+      network: this.keyPair.network
+    })
   }
 
-  return val
-}
+  var hd = new HDNode(derivedKeyPair, IR)
+  hd.depth = this.depth + 1
+  hd.index = index
+  hd.parentFingerprint = this.getFingerprint().readUInt32BE(0)
 
-Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 1, this.length)
-  return this[offset]
+  return hd
 }
 
-Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  return this[offset] | (this[offset + 1] << 8)
+HDNode.prototype.deriveHardened = function (index) {
+  typeforce(types.UInt31, index)
+
+  // Only derives hardened private keys by default
+  return this.derive(index + HDNode.HIGHEST_BIT)
 }
 
-Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  return (this[offset] << 8) | this[offset + 1]
+// Private === not neutered
+// Public === neutered
+HDNode.prototype.isNeutered = function () {
+  return !(this.keyPair.d)
 }
 
-Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+HDNode.prototype.derivePath = function (path) {
+  typeforce(types.BIP32Path, path)
 
-  return ((this[offset]) |
-      (this[offset + 1] << 8) |
-      (this[offset + 2] << 16)) +
-      (this[offset + 3] * 0x1000000)
-}
+  var splitPath = path.split('/')
+  if (splitPath[0] === 'm') {
+    if (this.parentFingerprint) {
+      throw new Error('Not a master node')
+    }
 
-Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+    splitPath = splitPath.slice(1)
+  }
 
-  return (this[offset] * 0x1000000) +
-    ((this[offset + 1] << 16) |
-    (this[offset + 2] << 8) |
-    this[offset + 3])
+  return splitPath.reduce(function (prevHd, indexStr) {
+    var index
+    if (indexStr.slice(-1) === "'") {
+      index = parseInt(indexStr.slice(0, -1), 10)
+      return prevHd.deriveHardened(index)
+    } else {
+      index = parseInt(indexStr, 10)
+      return prevHd.derive(index)
+    }
+  }, this)
 }
 
-Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+module.exports = HDNode
 
-  var val = this[offset]
-  var mul = 1
-  var i = 0
-  while (++i < byteLength && (mul *= 0x100)) {
-    val += this[offset + i] * mul
-  }
-  mul *= 0x80
+},{"./crypto":47,"./ecpair":49,"./networks":53,"./types":80,"bigi":39,"bs58check":85,"create-hmac":90,"ecurve":94,"safe-buffer":128,"typeforce":139}],52:[function(require,module,exports){
+var script = require('./script')
 
-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+var templates = require('./templates')
+for (var key in templates) {
+  script[key] = templates[key]
+}
 
-  return val
+module.exports = {
+  bufferutils: require('./bufferutils'), // TODO: remove in 4.0.0
+
+  Block: require('./block'),
+  ECPair: require('./ecpair'),
+  ECSignature: require('./ecsignature'),
+  HDNode: require('./hdnode'),
+  Transaction: require('./transaction'),
+  TransactionBuilder: require('./transaction_builder'),
+
+  address: require('./address'),
+  crypto: require('./crypto'),
+  networks: require('./networks'),
+  opcodes: require('bitcoin-ops'),
+  script: script
 }
 
-Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) checkOffset(offset, byteLength, this.length)
+},{"./address":44,"./block":45,"./bufferutils":46,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./hdnode":51,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./transaction_builder":79,"bitcoin-ops":42}],53:[function(require,module,exports){
+// https://en.bitcoin.it/wiki/List_of_address_prefixes
+// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731
 
-  var i = byteLength
-  var mul = 1
-  var val = this[offset + --i]
-  while (i > 0 && (mul *= 0x100)) {
-    val += this[offset + --i] * mul
+module.exports = {
+  bitcoin: {
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'bc',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4
+    },
+    pubKeyHash: 0x00,
+    scriptHash: 0x05,
+    wif: 0x80
+  },
+  testnet: {
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'tb',
+    bip32: {
+      public: 0x043587cf,
+      private: 0x04358394
+    },
+    pubKeyHash: 0x6f,
+    scriptHash: 0xc4,
+    wif: 0xef
+  },
+  litecoin: {
+    messagePrefix: '\x19Litecoin Signed Message:\n',
+    bip32: {
+      public: 0x019da462,
+      private: 0x019d9cfe
+    },
+    pubKeyHash: 0x30,
+    scriptHash: 0x32,
+    wif: 0xb0
   }
-  mul *= 0x80
+}
 
-  if (val >= mul) val -= Math.pow(2, 8 * byteLength)
+},{}],54:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var bip66 = require('bip66')
+var pushdata = require('pushdata-bitcoin')
+var typeforce = require('typeforce')
+var types = require('./types')
+var scriptNumber = require('./script_number')
 
-  return val
-}
+var OPS = require('bitcoin-ops')
+var REVERSE_OPS = require('bitcoin-ops/map')
+var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
 
-Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 1, this.length)
-  if (!(this[offset] & 0x80)) return (this[offset])
-  return ((0xff - this[offset] + 1) * -1)
+function isOPInt (value) {
+  return types.Number(value) &&
+    ((value === OPS.OP_0) ||
+    (value >= OPS.OP_1 && value <= OPS.OP_16) ||
+    (value === OPS.OP_1NEGATE))
 }
 
-Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  var val = this[offset] | (this[offset + 1] << 8)
-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+function isPushOnlyChunk (value) {
+  return types.Buffer(value) || isOPInt(value)
 }
 
-Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 2, this.length)
-  var val = this[offset + 1] | (this[offset] << 8)
-  return (val & 0x8000) ? val | 0xFFFF0000 : val
+function isPushOnly (value) {
+  return types.Array(value) && value.every(isPushOnlyChunk)
 }
 
-Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
-
-  return (this[offset]) |
-    (this[offset + 1] << 8) |
-    (this[offset + 2] << 16) |
-    (this[offset + 3] << 24)
+function asMinimalOP (buffer) {
+  if (buffer.length === 0) return OPS.OP_0
+  if (buffer.length !== 1) return
+  if (buffer[0] >= 1 && buffer[0] <= 16) return OP_INT_BASE + buffer[0]
+  if (buffer[0] === 0x81) return OPS.OP_1NEGATE
 }
 
-Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
+function compile (chunks) {
+  // TODO: remove me
+  if (Buffer.isBuffer(chunks)) return chunks
 
-  return (this[offset] << 24) |
-    (this[offset + 1] << 16) |
-    (this[offset + 2] << 8) |
-    (this[offset + 3])
-}
+  typeforce(types.Array, chunks)
 
-Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
-  return ieee754.read(this, offset, true, 23, 4)
-}
+  var bufferSize = chunks.reduce(function (accum, chunk) {
+    // data chunk
+    if (Buffer.isBuffer(chunk)) {
+      // adhere to BIP62.3, minimal push policy
+      if (chunk.length === 1 && asMinimalOP(chunk) !== undefined) {
+        return accum + 1
+      }
 
-Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 4, this.length)
-  return ieee754.read(this, offset, false, 23, 4)
-}
+      return accum + pushdata.encodingLength(chunk.length) + chunk.length
+    }
 
-Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 8, this.length)
-  return ieee754.read(this, offset, true, 52, 8)
-}
+    // opcode
+    return accum + 1
+  }, 0.0)
 
-Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
-  offset = offset >>> 0
-  if (!noAssert) checkOffset(offset, 8, this.length)
-  return ieee754.read(this, offset, false, 52, 8)
-}
+  var buffer = Buffer.allocUnsafe(bufferSize)
+  var offset = 0
 
-function checkInt (buf, value, offset, ext, max, min) {
-  if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
-  if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
-  if (offset + ext > buf.length) throw new RangeError('Index out of range')
-}
+  chunks.forEach(function (chunk) {
+    // data chunk
+    if (Buffer.isBuffer(chunk)) {
+      // adhere to BIP62.3, minimal push policy
+      var opcode = asMinimalOP(chunk)
+      if (opcode !== undefined) {
+        buffer.writeUInt8(opcode, offset)
+        offset += 1
+        return
+      }
 
-Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    var maxBytes = Math.pow(2, 8 * byteLength) - 1
-    checkInt(this, value, offset, byteLength, maxBytes, 0)
-  }
+      offset += pushdata.encode(buffer, chunk.length, offset)
+      chunk.copy(buffer, offset)
+      offset += chunk.length
 
-  var mul = 1
-  var i = 0
-  this[offset] = value & 0xFF
-  while (++i < byteLength && (mul *= 0x100)) {
-    this[offset + i] = (value / mul) & 0xFF
-  }
+    // opcode
+    } else {
+      buffer.writeUInt8(chunk, offset)
+      offset += 1
+    }
+  })
 
-  return offset + byteLength
+  if (offset !== buffer.length) throw new Error('Could not decode chunks')
+  return buffer
 }
 
-Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  byteLength = byteLength >>> 0
-  if (!noAssert) {
-    var maxBytes = Math.pow(2, 8 * byteLength) - 1
-    checkInt(this, value, offset, byteLength, maxBytes, 0)
-  }
+function decompile (buffer) {
+  // TODO: remove me
+  if (types.Array(buffer)) return buffer
 
-  var i = byteLength - 1
-  var mul = 1
-  this[offset + i] = value & 0xFF
-  while (--i >= 0 && (mul *= 0x100)) {
-    this[offset + i] = (value / mul) & 0xFF
-  }
+  typeforce(types.Buffer, buffer)
 
-  return offset + byteLength
-}
+  var chunks = []
+  var i = 0
 
-Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
-  this[offset] = (value & 0xff)
-  return offset + 1
-}
+  while (i < buffer.length) {
+    var opcode = buffer[i]
 
-Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  return offset + 2
-}
+    // data chunk
+    if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) {
+      var d = pushdata.decode(buffer, i)
 
-Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
-  return offset + 2
-}
+      // did reading a pushDataInt fail? empty script
+      if (d === null) return []
+      i += d.size
 
-Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
-  this[offset + 3] = (value >>> 24)
-  this[offset + 2] = (value >>> 16)
-  this[offset + 1] = (value >>> 8)
-  this[offset] = (value & 0xff)
-  return offset + 4
-}
+      // attempt to read too much data? empty script
+      if (i + d.number > buffer.length) return []
 
-Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
-  this[offset] = (value >>> 24)
-  this[offset + 1] = (value >>> 16)
-  this[offset + 2] = (value >>> 8)
-  this[offset + 3] = (value & 0xff)
-  return offset + 4
-}
+      var data = buffer.slice(i, i + d.number)
+      i += d.number
 
-Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
+      // decompile minimally
+      var op = asMinimalOP(data)
+      if (op !== undefined) {
+        chunks.push(op)
+      } else {
+        chunks.push(data)
+      }
 
-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
-  }
+    // opcode
+    } else {
+      chunks.push(opcode)
 
-  var i = 0
-  var mul = 1
-  var sub = 0
-  this[offset] = value & 0xFF
-  while (++i < byteLength && (mul *= 0x100)) {
-    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
-      sub = 1
+      i += 1
     }
-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
   }
 
-  return offset + byteLength
+  return chunks
 }
 
-Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    var limit = Math.pow(2, (8 * byteLength) - 1)
-
-    checkInt(this, value, offset, byteLength, limit - 1, -limit)
+function toASM (chunks) {
+  if (Buffer.isBuffer(chunks)) {
+    chunks = decompile(chunks)
   }
 
-  var i = byteLength - 1
-  var mul = 1
-  var sub = 0
-  this[offset + i] = value & 0xFF
-  while (--i >= 0 && (mul *= 0x100)) {
-    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
-      sub = 1
+  return chunks.map(function (chunk) {
+    // data?
+    if (Buffer.isBuffer(chunk)) {
+      var op = asMinimalOP(chunk)
+      if (op === undefined) return chunk.toString('hex')
+      chunk = op
     }
-    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
-  }
 
-  return offset + byteLength
+    // opcode!
+    return REVERSE_OPS[chunk]
+  }).join(' ')
 }
 
-Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
-  if (value < 0) value = 0xff + value + 1
-  this[offset] = (value & 0xff)
-  return offset + 1
-}
+function fromASM (asm) {
+  typeforce(types.String, asm)
 
-Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  return offset + 2
-}
+  return compile(asm.split(' ').map(function (chunkStr) {
+    // opcode?
+    if (OPS[chunkStr] !== undefined) return OPS[chunkStr]
+    typeforce(types.Hex, chunkStr)
 
-Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
-  this[offset] = (value >>> 8)
-  this[offset + 1] = (value & 0xff)
-  return offset + 2
+    // data!
+    return Buffer.from(chunkStr, 'hex')
+  }))
 }
 
-Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
-  this[offset] = (value & 0xff)
-  this[offset + 1] = (value >>> 8)
-  this[offset + 2] = (value >>> 16)
-  this[offset + 3] = (value >>> 24)
-  return offset + 4
-}
+function toStack (chunks) {
+  chunks = decompile(chunks)
+  typeforce(isPushOnly, chunks)
 
-Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
-  if (value < 0) value = 0xffffffff + value + 1
-  this[offset] = (value >>> 24)
-  this[offset + 1] = (value >>> 16)
-  this[offset + 2] = (value >>> 8)
-  this[offset + 3] = (value & 0xff)
-  return offset + 4
-}
+  return chunks.map(function (op) {
+    if (Buffer.isBuffer(op)) return op
+    if (op === OPS.OP_0) return Buffer.allocUnsafe(0)
 
-function checkIEEE754 (buf, value, offset, ext, max, min) {
-  if (offset + ext > buf.length) throw new RangeError('Index out of range')
-  if (offset < 0) throw new RangeError('Index out of range')
+    return scriptNumber.encode(op - OP_INT_BASE)
+  })
 }
 
-function writeFloat (buf, value, offset, littleEndian, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
+function isCanonicalPubKey (buffer) {
+  if (!Buffer.isBuffer(buffer)) return false
+  if (buffer.length < 33) return false
+
+  switch (buffer[0]) {
+    case 0x02:
+    case 0x03:
+      return buffer.length === 33
+    case 0x04:
+      return buffer.length === 65
   }
-  ieee754.write(buf, value, offset, littleEndian, 23, 4)
-  return offset + 4
-}
 
-Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
-  return writeFloat(this, value, offset, true, noAssert)
+  return false
 }
 
-Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
-  return writeFloat(this, value, offset, false, noAssert)
-}
+function isDefinedHashType (hashType) {
+  var hashTypeMod = hashType & ~0x80
 
-function writeDouble (buf, value, offset, littleEndian, noAssert) {
-  value = +value
-  offset = offset >>> 0
-  if (!noAssert) {
-    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
-  }
-  ieee754.write(buf, value, offset, littleEndian, 52, 8)
-  return offset + 8
+// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE
+  return hashTypeMod > 0x00 && hashTypeMod < 0x04
 }
 
-Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
-  return writeDouble(this, value, offset, true, noAssert)
-}
+function isCanonicalSignature (buffer) {
+  if (!Buffer.isBuffer(buffer)) return false
+  if (!isDefinedHashType(buffer[buffer.length - 1])) return false
 
-Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
-  return writeDouble(this, value, offset, false, noAssert)
+  return bip66.check(buffer.slice(0, -1))
 }
 
-// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
-Buffer.prototype.copy = function copy (target, targetStart, start, end) {
-  if (!start) start = 0
-  if (!end && end !== 0) end = this.length
-  if (targetStart >= target.length) targetStart = target.length
-  if (!targetStart) targetStart = 0
-  if (end > 0 && end < start) end = start
+module.exports = {
+  compile: compile,
+  decompile: decompile,
+  fromASM: fromASM,
+  toASM: toASM,
+  toStack: toStack,
 
-  // Copy 0 bytes; we're done
-  if (end === start) return 0
-  if (target.length === 0 || this.length === 0) return 0
+  number: require('./script_number'),
 
-  // Fatal error conditions
-  if (targetStart < 0) {
-    throw new RangeError('targetStart out of bounds')
-  }
-  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
-  if (end < 0) throw new RangeError('sourceEnd out of bounds')
+  isCanonicalPubKey: isCanonicalPubKey,
+  isCanonicalSignature: isCanonicalSignature,
+  isPushOnly: isPushOnly,
+  isDefinedHashType: isDefinedHashType
+}
 
-  // Are we oob?
-  if (end > this.length) end = this.length
-  if (target.length - targetStart < end - start) {
-    end = target.length - targetStart + start
-  }
+},{"./script_number":55,"./types":80,"bip66":41,"bitcoin-ops":42,"bitcoin-ops/map":43,"pushdata-bitcoin":125,"safe-buffer":128,"typeforce":139}],55:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
 
-  var len = end - start
-  var i
+function decode (buffer, maxLength, minimal) {
+  maxLength = maxLength || 4
+  minimal = minimal === undefined ? true : minimal
 
-  if (this === target && start < targetStart && targetStart < end) {
-    // descending copy from end
-    for (i = len - 1; i >= 0; --i) {
-      target[i + targetStart] = this[i + start]
-    }
-  } else if (len < 1000) {
-    // ascending copy from start
-    for (i = 0; i < len; ++i) {
-      target[i + targetStart] = this[i + start]
+  var length = buffer.length
+  if (length === 0) return 0
+  if (length > maxLength) throw new TypeError('Script number overflow')
+  if (minimal) {
+    if ((buffer[length - 1] & 0x7f) === 0) {
+      if (length <= 1 || (buffer[length - 2] & 0x80) === 0) throw new Error('Non-minimally encoded script number')
     }
-  } else {
-    Uint8Array.prototype.set.call(
-      target,
-      this.subarray(start, start + len),
-      targetStart
-    )
   }
 
-  return len
-}
+  // 40-bit
+  if (length === 5) {
+    var a = buffer.readUInt32LE(0)
+    var b = buffer.readUInt8(4)
 
-// Usage:
-//    buffer.fill(number[, offset[, end]])
-//    buffer.fill(buffer[, offset[, end]])
-//    buffer.fill(string[, offset[, end]][, encoding])
-Buffer.prototype.fill = function fill (val, start, end, encoding) {
-  // Handle string cases:
-  if (typeof val === 'string') {
-    if (typeof start === 'string') {
-      encoding = start
-      start = 0
-      end = this.length
-    } else if (typeof end === 'string') {
-      encoding = end
-      end = this.length
-    }
-    if (val.length === 1) {
-      var code = val.charCodeAt(0)
-      if (code < 256) {
-        val = code
-      }
-    }
-    if (encoding !== undefined && typeof encoding !== 'string') {
-      throw new TypeError('encoding must be a string')
-    }
-    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
-      throw new TypeError('Unknown encoding: ' + encoding)
-    }
-  } else if (typeof val === 'number') {
-    val = val & 255
+    if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a)
+    return (b * 0x100000000) + a
   }
 
-  // Invalid ranges are not set to a default, so can range check early.
-  if (start < 0 || this.length < start || this.length < end) {
-    throw new RangeError('Out of range index')
-  }
+  var result = 0
 
-  if (end <= start) {
-    return this
+  // 32-bit / 24-bit / 16-bit / 8-bit
+  for (var i = 0; i < length; ++i) {
+    result |= buffer[i] << (8 * i)
   }
 
-  start = start >>> 0
-  end = end === undefined ? this.length : end >>> 0
+  if (buffer[length - 1] & 0x80) return -(result & ~(0x80 << (8 * (length - 1))))
+  return result
+}
 
-  if (!val) val = 0
+function scriptNumSize (i) {
+  return i > 0x7fffffff ? 5
+  : i > 0x7fffff ? 4
+  : i > 0x7fff ? 3
+  : i > 0x7f ? 2
+  : i > 0x00 ? 1
+  : 0
+}
 
-  var i
-  if (typeof val === 'number') {
-    for (i = start; i < end; ++i) {
-      this[i] = val
-    }
-  } else {
-    var bytes = Buffer.isBuffer(val)
-      ? val
-      : new Buffer(val, encoding)
-    var len = bytes.length
-    for (i = 0; i < end - start; ++i) {
-      this[i + start] = bytes[i % len]
-    }
+function encode (number) {
+  var value = Math.abs(number)
+  var size = scriptNumSize(value)
+  var buffer = Buffer.allocUnsafe(size)
+  var negative = number < 0
+
+  for (var i = 0; i < size; ++i) {
+    buffer.writeUInt8(value & 0xff, i)
+    value >>= 8
   }
 
-  return this
+  if (buffer[size - 1] & 0x80) {
+    buffer.writeUInt8(negative ? 0x80 : 0x00, size - 1)
+  } else if (negative) {
+    buffer[size - 1] |= 0x80
+  }
+
+  return buffer
 }
 
-// HELPER FUNCTIONS
-// ================
+module.exports = {
+  decode: decode,
+  encode: encode
+}
 
-var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g
+},{"safe-buffer":128}],56:[function(require,module,exports){
+var decompile = require('../script').decompile
+var multisig = require('./multisig')
+var nullData = require('./nulldata')
+var pubKey = require('./pubkey')
+var pubKeyHash = require('./pubkeyhash')
+var scriptHash = require('./scripthash')
+var witnessPubKeyHash = require('./witnesspubkeyhash')
+var witnessScriptHash = require('./witnessscripthash')
+var witnessCommitment = require('./witnesscommitment')
 
-function base64clean (str) {
-  // Node strips out invalid characters like \n and \t from the string, base64-js does not
-  str = str.trim().replace(INVALID_BASE64_RE, '')
-  // Node converts strings with length < 2 to ''
-  if (str.length < 2) return ''
-  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
-  while (str.length % 4 !== 0) {
-    str = str + '='
-  }
-  return str
+var types = {
+  MULTISIG: 'multisig',
+  NONSTANDARD: 'nonstandard',
+  NULLDATA: 'nulldata',
+  P2PK: 'pubkey',
+  P2PKH: 'pubkeyhash',
+  P2SH: 'scripthash',
+  P2WPKH: 'witnesspubkeyhash',
+  P2WSH: 'witnessscripthash',
+  WITNESS_COMMITMENT: 'witnesscommitment'
 }
 
-function toHex (n) {
-  if (n < 16) return '0' + n.toString(16)
-  return n.toString(16)
+function classifyOutput (script) {
+  if (witnessPubKeyHash.output.check(script)) return types.P2WPKH
+  if (witnessScriptHash.output.check(script)) return types.P2WSH
+  if (pubKeyHash.output.check(script)) return types.P2PKH
+  if (scriptHash.output.check(script)) return types.P2SH
+
+  // XXX: optimization, below functions .decompile before use
+  var chunks = decompile(script)
+  if (multisig.output.check(chunks)) return types.MULTISIG
+  if (pubKey.output.check(chunks)) return types.P2PK
+  if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT
+  if (nullData.output.check(chunks)) return types.NULLDATA
+
+  return types.NONSTANDARD
 }
 
-function utf8ToBytes (string, units) {
-  units = units || Infinity
-  var codePoint
-  var length = string.length
-  var leadSurrogate = null
-  var bytes = []
+function classifyInput (script, allowIncomplete) {
+  // XXX: optimization, below functions .decompile before use
+  var chunks = decompile(script)
 
-  for (var i = 0; i < length; ++i) {
-    codePoint = string.charCodeAt(i)
+  if (pubKeyHash.input.check(chunks)) return types.P2PKH
+  if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH
+  if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG
+  if (pubKey.input.check(chunks)) return types.P2PK
 
-    // is surrogate component
-    if (codePoint > 0xD7FF && codePoint < 0xE000) {
-      // last char was a lead
-      if (!leadSurrogate) {
-        // no lead yet
-        if (codePoint > 0xDBFF) {
-          // unexpected trail
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        } else if (i + 1 === length) {
-          // unpaired lead
-          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-          continue
-        }
+  return types.NONSTANDARD
+}
 
-        // valid lead
-        leadSurrogate = codePoint
+function classifyWitness (script, allowIncomplete) {
+  // XXX: optimization, below functions .decompile before use
+  var chunks = decompile(script)
 
-        continue
-      }
+  if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH
+  if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH
 
-      // 2 leads in a row
-      if (codePoint < 0xDC00) {
-        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-        leadSurrogate = codePoint
-        continue
-      }
+  return types.NONSTANDARD
+}
 
-      // valid surrogate pair
-      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
-    } else if (leadSurrogate) {
-      // valid bmp char, but last char was a lead
-      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
-    }
+module.exports = {
+  classifyInput: classifyInput,
+  classifyOutput: classifyOutput,
+  classifyWitness: classifyWitness,
+  multisig: multisig,
+  nullData: nullData,
+  pubKey: pubKey,
+  pubKeyHash: pubKeyHash,
+  scriptHash: scriptHash,
+  witnessPubKeyHash: witnessPubKeyHash,
+  witnessScriptHash: witnessScriptHash,
+  witnessCommitment: witnessCommitment,
+  types: types
+}
 
-    leadSurrogate = null
+},{"../script":54,"./multisig":57,"./nulldata":60,"./pubkey":61,"./pubkeyhash":64,"./scripthash":67,"./witnesscommitment":70,"./witnesspubkeyhash":72,"./witnessscripthash":75}],57:[function(require,module,exports){
+module.exports = {
+  input: require('./input'),
+  output: require('./output')
+}
 
-    // encode utf8
-    if (codePoint < 0x80) {
-      if ((units -= 1) < 0) break
-      bytes.push(codePoint)
-    } else if (codePoint < 0x800) {
-      if ((units -= 2) < 0) break
-      bytes.push(
-        codePoint >> 0x6 | 0xC0,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x10000) {
-      if ((units -= 3) < 0) break
-      bytes.push(
-        codePoint >> 0xC | 0xE0,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else if (codePoint < 0x110000) {
-      if ((units -= 4) < 0) break
-      bytes.push(
-        codePoint >> 0x12 | 0xF0,
-        codePoint >> 0xC & 0x3F | 0x80,
-        codePoint >> 0x6 & 0x3F | 0x80,
-        codePoint & 0x3F | 0x80
-      )
-    } else {
-      throw new Error('Invalid code point')
-    }
-  }
+},{"./input":58,"./output":59}],58:[function(require,module,exports){
+// OP_0 [signatures ...]
 
-  return bytes
+var Buffer = require('safe-buffer').Buffer
+var bscript = require('../../script')
+var p2mso = require('./output')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
+
+function partialSignature (value) {
+  return value === OPS.OP_0 || bscript.isCanonicalSignature(value)
 }
 
-function asciiToBytes (str) {
-  var byteArray = []
-  for (var i = 0; i < str.length; ++i) {
-    // Node's code seems to be doing this and not & 0x7F..
-    byteArray.push(str.charCodeAt(i) & 0xFF)
+function check (script, allowIncomplete) {
+  var chunks = bscript.decompile(script)
+  if (chunks.length < 2) return false
+  if (chunks[0] !== OPS.OP_0) return false
+
+  if (allowIncomplete) {
+    return chunks.slice(1).every(partialSignature)
   }
-  return byteArray
+
+  return chunks.slice(1).every(bscript.isCanonicalSignature)
 }
+check.toJSON = function () { return 'multisig input' }
 
-function utf16leToBytes (str, units) {
-  var c, hi, lo
-  var byteArray = []
-  for (var i = 0; i < str.length; ++i) {
-    if ((units -= 2) < 0) break
+var EMPTY_BUFFER = Buffer.allocUnsafe(0)
 
-    c = str.charCodeAt(i)
-    hi = c >> 8
-    lo = c % 256
-    byteArray.push(lo)
-    byteArray.push(hi)
+function encodeStack (signatures, scriptPubKey) {
+  typeforce([partialSignature], signatures)
+
+  if (scriptPubKey) {
+    var scriptData = p2mso.decode(scriptPubKey)
+
+    if (signatures.length < scriptData.m) {
+      throw new TypeError('Not enough signatures provided')
+    }
+
+    if (signatures.length > scriptData.pubKeys.length) {
+      throw new TypeError('Too many signatures provided')
+    }
   }
 
-  return byteArray
+  return [].concat(EMPTY_BUFFER, signatures.map(function (sig) {
+    if (sig === OPS.OP_0) {
+      return EMPTY_BUFFER
+    }
+    return sig
+  }))
 }
 
-function base64ToBytes (str) {
-  return base64.toByteArray(base64clean(str))
+function encode (signatures, scriptPubKey) {
+  return bscript.compile(encodeStack(signatures, scriptPubKey))
 }
 
-function blitBuffer (src, dst, offset, length) {
-  for (var i = 0; i < length; ++i) {
-    if ((i + offset >= dst.length) || (i >= src.length)) break
-    dst[i + offset] = src[i]
-  }
-  return i
+function decodeStack (stack, allowIncomplete) {
+  typeforce(check, stack, allowIncomplete)
+  return stack.slice(1)
 }
 
-// Node 0.10 supports `ArrayBuffer` but lacks `ArrayBuffer.isView`
-function isArrayBufferView (obj) {
-  return (typeof ArrayBuffer.isView === 'function') && ArrayBuffer.isView(obj)
+function decode (buffer, allowIncomplete) {
+  var stack = bscript.decompile(buffer)
+  return decodeStack(stack, allowIncomplete)
 }
 
-function numberIsNaN (obj) {
-  return obj !== obj // eslint-disable-line no-self-compare
+module.exports = {
+  check: check,
+  decode: decode,
+  decodeStack: decodeStack,
+  encode: encode,
+  encodeStack: encodeStack
 }
 
-},{"base64-js":2,"ieee754":7}],5:[function(require,module,exports){
-(function (Buffer){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+},{"../../script":54,"./output":59,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],59:[function(require,module,exports){
+// m [pubKeys ...] n OP_CHECKMULTISIG
 
-// NOTE: These type checking functions intentionally don't use `instanceof`
-// because it is fragile and can be easily faked with `Object.create()`.
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
+var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
 
-function isArray(arg) {
-  if (Array.isArray) {
-    return Array.isArray(arg);
-  }
-  return objectToString(arg) === '[object Array]';
-}
-exports.isArray = isArray;
+function check (script, allowIncomplete) {
+  var chunks = bscript.decompile(script)
 
-function isBoolean(arg) {
-  return typeof arg === 'boolean';
-}
-exports.isBoolean = isBoolean;
+  if (chunks.length < 4) return false
+  if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false
+  if (!types.Number(chunks[0])) return false
+  if (!types.Number(chunks[chunks.length - 2])) return false
+  var m = chunks[0] - OP_INT_BASE
+  var n = chunks[chunks.length - 2] - OP_INT_BASE
 
-function isNull(arg) {
-  return arg === null;
-}
-exports.isNull = isNull;
+  if (m <= 0) return false
+  if (n > 16) return false
+  if (m > n) return false
+  if (n !== chunks.length - 3) return false
+  if (allowIncomplete) return true
 
-function isNullOrUndefined(arg) {
-  return arg == null;
+  var keys = chunks.slice(1, -2)
+  return keys.every(bscript.isCanonicalPubKey)
 }
-exports.isNullOrUndefined = isNullOrUndefined;
+check.toJSON = function () { return 'multi-sig output' }
 
-function isNumber(arg) {
-  return typeof arg === 'number';
-}
-exports.isNumber = isNumber;
+function encode (m, pubKeys) {
+  typeforce({
+    m: types.Number,
+    pubKeys: [bscript.isCanonicalPubKey]
+  }, {
+    m: m,
+    pubKeys: pubKeys
+  })
 
-function isString(arg) {
-  return typeof arg === 'string';
-}
-exports.isString = isString;
+  var n = pubKeys.length
+  if (n < m) throw new TypeError('Not enough pubKeys provided')
 
-function isSymbol(arg) {
-  return typeof arg === 'symbol';
+  return bscript.compile([].concat(
+    OP_INT_BASE + m,
+    pubKeys,
+    OP_INT_BASE + n,
+    OPS.OP_CHECKMULTISIG
+  ))
 }
-exports.isSymbol = isSymbol;
 
-function isUndefined(arg) {
-  return arg === void 0;
-}
-exports.isUndefined = isUndefined;
+function decode (buffer, allowIncomplete) {
+  var chunks = bscript.decompile(buffer)
+  typeforce(check, chunks, allowIncomplete)
 
-function isRegExp(re) {
-  return objectToString(re) === '[object RegExp]';
+  return {
+    m: chunks[0] - OP_INT_BASE,
+    pubKeys: chunks.slice(1, -2)
+  }
 }
-exports.isRegExp = isRegExp;
 
-function isObject(arg) {
-  return typeof arg === 'object' && arg !== null;
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
 }
-exports.isObject = isObject;
 
-function isDate(d) {
-  return objectToString(d) === '[object Date]';
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],60:[function(require,module,exports){
+// OP_RETURN {data}
+
+var bscript = require('../script')
+var types = require('../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
+
+function check (script) {
+  var buffer = bscript.compile(script)
+
+  return buffer.length > 1 &&
+    buffer[0] === OPS.OP_RETURN
 }
-exports.isDate = isDate;
+check.toJSON = function () { return 'null data output' }
 
-function isError(e) {
-  return (objectToString(e) === '[object Error]' || e instanceof Error);
+function encode (data) {
+  typeforce(types.Buffer, data)
+
+  return bscript.compile([OPS.OP_RETURN, data])
 }
-exports.isError = isError;
 
-function isFunction(arg) {
-  return typeof arg === 'function';
+function decode (buffer) {
+  typeforce(check, buffer)
+
+  return buffer.slice(2)
 }
-exports.isFunction = isFunction;
 
-function isPrimitive(arg) {
-  return arg === null ||
-         typeof arg === 'boolean' ||
-         typeof arg === 'number' ||
-         typeof arg === 'string' ||
-         typeof arg === 'symbol' ||  // ES6 symbol
-         typeof arg === 'undefined';
+module.exports = {
+  output: {
+    check: check,
+    decode: decode,
+    encode: encode
+  }
 }
-exports.isPrimitive = isPrimitive;
 
-exports.isBuffer = Buffer.isBuffer;
+},{"../script":54,"../types":80,"bitcoin-ops":42,"typeforce":139}],61:[function(require,module,exports){
+arguments[4][57][0].apply(exports,arguments)
+},{"./input":62,"./output":63,"dup":57}],62:[function(require,module,exports){
+// {signature}
 
-function objectToString(o) {
-  return Object.prototype.toString.call(o);
-}
+var bscript = require('../../script')
+var typeforce = require('typeforce')
 
-}).call(this,{"isBuffer":require("../../is-buffer/index.js")})
-},{"../../is-buffer/index.js":9}],6:[function(require,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+function check (script) {
+  var chunks = bscript.decompile(script)
 
-function EventEmitter() {
-  this._events = this._events || {};
-  this._maxListeners = this._maxListeners || undefined;
+  return chunks.length === 1 &&
+    bscript.isCanonicalSignature(chunks[0])
 }
-module.exports = EventEmitter;
-
-// Backwards-compat with node 0.10.x
-EventEmitter.EventEmitter = EventEmitter;
+check.toJSON = function () { return 'pubKey input' }
 
-EventEmitter.prototype._events = undefined;
-EventEmitter.prototype._maxListeners = undefined;
+function encodeStack (signature) {
+  typeforce(bscript.isCanonicalSignature, signature)
+  return [signature]
+}
 
-// By default EventEmitters will print a warning if more than 10 listeners are
-// added to it. This is a useful default which helps finding memory leaks.
-EventEmitter.defaultMaxListeners = 10;
+function encode (signature) {
+  return bscript.compile(encodeStack(signature))
+}
 
-// Obviously not all Emitters should be limited to 10. This function allows
-// that to be increased. Set to zero for unlimited.
-EventEmitter.prototype.setMaxListeners = function(n) {
-  if (!isNumber(n) || n < 0 || isNaN(n))
-    throw TypeError('n must be a positive number');
-  this._maxListeners = n;
-  return this;
-};
+function decodeStack (stack) {
+  typeforce(check, stack)
+  return stack[0]
+}
 
-EventEmitter.prototype.emit = function(type) {
-  var er, handler, len, args, i, listeners;
+function decode (buffer) {
+  var stack = bscript.decompile(buffer)
+  return decodeStack(stack)
+}
 
-  if (!this._events)
-    this._events = {};
+module.exports = {
+  check: check,
+  decode: decode,
+  decodeStack: decodeStack,
+  encode: encode,
+  encodeStack: encodeStack
+}
 
-  // If there is no 'error' event listener then throw.
-  if (type === 'error') {
-    if (!this._events.error ||
-        (isObject(this._events.error) && !this._events.error.length)) {
-      er = arguments[1];
-      if (er instanceof Error) {
-        throw er; // Unhandled 'error' event
-      } else {
-        // At least give some kind of context to the user
-        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
-        err.context = er;
-        throw err;
-      }
-    }
-  }
+},{"../../script":54,"typeforce":139}],63:[function(require,module,exports){
+// {pubKey} OP_CHECKSIG
 
-  handler = this._events[type];
+var bscript = require('../../script')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
 
-  if (isUndefined(handler))
-    return false;
+function check (script) {
+  var chunks = bscript.decompile(script)
 
-  if (isFunction(handler)) {
-    switch (arguments.length) {
-      // fast cases
-      case 1:
-        handler.call(this);
-        break;
-      case 2:
-        handler.call(this, arguments[1]);
-        break;
-      case 3:
-        handler.call(this, arguments[1], arguments[2]);
-        break;
-      // slower
-      default:
-        args = Array.prototype.slice.call(arguments, 1);
-        handler.apply(this, args);
-    }
-  } else if (isObject(handler)) {
-    args = Array.prototype.slice.call(arguments, 1);
-    listeners = handler.slice();
-    len = listeners.length;
-    for (i = 0; i < len; i++)
-      listeners[i].apply(this, args);
-  }
+  return chunks.length === 2 &&
+    bscript.isCanonicalPubKey(chunks[0]) &&
+    chunks[1] === OPS.OP_CHECKSIG
+}
+check.toJSON = function () { return 'pubKey output' }
 
-  return true;
-};
+function encode (pubKey) {
+  typeforce(bscript.isCanonicalPubKey, pubKey)
 
-EventEmitter.prototype.addListener = function(type, listener) {
-  var m;
+  return bscript.compile([pubKey, OPS.OP_CHECKSIG])
+}
 
-  if (!isFunction(listener))
-    throw TypeError('listener must be a function');
+function decode (buffer) {
+  var chunks = bscript.decompile(buffer)
+  typeforce(check, chunks)
 
-  if (!this._events)
-    this._events = {};
+  return chunks[0]
+}
 
-  // To avoid recursion in the case that type === "newListener"! Before
-  // adding it to the listeners, first emit "newListener".
-  if (this._events.newListener)
-    this.emit('newListener', type,
-              isFunction(listener.listener) ?
-              listener.listener : listener);
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
+}
 
-  if (!this._events[type])
-    // Optimize the case of one listener. Don't need the extra array object.
-    this._events[type] = listener;
-  else if (isObject(this._events[type]))
-    // If we've already got an array, just append.
-    this._events[type].push(listener);
-  else
-    // Adding the second element, need to change to array.
-    this._events[type] = [this._events[type], listener];
+},{"../../script":54,"bitcoin-ops":42,"typeforce":139}],64:[function(require,module,exports){
+arguments[4][57][0].apply(exports,arguments)
+},{"./input":65,"./output":66,"dup":57}],65:[function(require,module,exports){
+// {signature} {pubKey}
 
-  // Check for listener leak
-  if (isObject(this._events[type]) && !this._events[type].warned) {
-    if (!isUndefined(this._maxListeners)) {
-      m = this._maxListeners;
-    } else {
-      m = EventEmitter.defaultMaxListeners;
-    }
+var bscript = require('../../script')
+var typeforce = require('typeforce')
 
-    if (m && m > 0 && this._events[type].length > m) {
-      this._events[type].warned = true;
-      console.error('(node) warning: possible EventEmitter memory ' +
-                    'leak detected. %d listeners added. ' +
-                    'Use emitter.setMaxListeners() to increase limit.',
-                    this._events[type].length);
-      if (typeof console.trace === 'function') {
-        // not supported in IE 10
-        console.trace();
-      }
-    }
-  }
+function check (script) {
+  var chunks = bscript.decompile(script)
 
-  return this;
-};
+  return chunks.length === 2 &&
+    bscript.isCanonicalSignature(chunks[0]) &&
+    bscript.isCanonicalPubKey(chunks[1])
+}
+check.toJSON = function () { return 'pubKeyHash input' }
 
-EventEmitter.prototype.on = EventEmitter.prototype.addListener;
+function encodeStack (signature, pubKey) {
+  typeforce({
+    signature: bscript.isCanonicalSignature,
+    pubKey: bscript.isCanonicalPubKey
+  }, {
+    signature: signature,
+    pubKey: pubKey
+  })
 
-EventEmitter.prototype.once = function(type, listener) {
-  if (!isFunction(listener))
-    throw TypeError('listener must be a function');
+  return [signature, pubKey]
+}
 
-  var fired = false;
+function encode (signature, pubKey) {
+  return bscript.compile(encodeStack(signature, pubKey))
+}
 
-  function g() {
-    this.removeListener(type, g);
+function decodeStack (stack) {
+  typeforce(check, stack)
 
-    if (!fired) {
-      fired = true;
-      listener.apply(this, arguments);
-    }
+  return {
+    signature: stack[0],
+    pubKey: stack[1]
   }
+}
 
-  g.listener = listener;
-  this.on(type, g);
+function decode (buffer) {
+  var stack = bscript.decompile(buffer)
+  return decodeStack(stack)
+}
 
-  return this;
-};
+module.exports = {
+  check: check,
+  decode: decode,
+  decodeStack: decodeStack,
+  encode: encode,
+  encodeStack: encodeStack
+}
 
-// emits a 'removeListener' event iff the listener was removed
-EventEmitter.prototype.removeListener = function(type, listener) {
-  var list, position, length, i;
+},{"../../script":54,"typeforce":139}],66:[function(require,module,exports){
+// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
 
-  if (!isFunction(listener))
-    throw TypeError('listener must be a function');
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
 
-  if (!this._events || !this._events[type])
-    return this;
+function check (script) {
+  var buffer = bscript.compile(script)
 
-  list = this._events[type];
-  length = list.length;
-  position = -1;
+  return buffer.length === 25 &&
+    buffer[0] === OPS.OP_DUP &&
+    buffer[1] === OPS.OP_HASH160 &&
+    buffer[2] === 0x14 &&
+    buffer[23] === OPS.OP_EQUALVERIFY &&
+    buffer[24] === OPS.OP_CHECKSIG
+}
+check.toJSON = function () { return 'pubKeyHash output' }
 
-  if (list === listener ||
-      (isFunction(list.listener) && list.listener === listener)) {
-    delete this._events[type];
-    if (this._events.removeListener)
-      this.emit('removeListener', type, listener);
+function encode (pubKeyHash) {
+  typeforce(types.Hash160bit, pubKeyHash)
+
+  return bscript.compile([
+    OPS.OP_DUP,
+    OPS.OP_HASH160,
+    pubKeyHash,
+    OPS.OP_EQUALVERIFY,
+    OPS.OP_CHECKSIG
+  ])
+}
 
-  } else if (isObject(list)) {
-    for (i = length; i-- > 0;) {
-      if (list[i] === listener ||
-          (list[i].listener && list[i].listener === listener)) {
-        position = i;
-        break;
-      }
-    }
+function decode (buffer) {
+  typeforce(check, buffer)
 
-    if (position < 0)
-      return this;
+  return buffer.slice(3, 23)
+}
 
-    if (list.length === 1) {
-      list.length = 0;
-      delete this._events[type];
-    } else {
-      list.splice(position, 1);
-    }
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
+}
 
-    if (this._events.removeListener)
-      this.emit('removeListener', type, listener);
-  }
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],67:[function(require,module,exports){
+arguments[4][57][0].apply(exports,arguments)
+},{"./input":68,"./output":69,"dup":57}],68:[function(require,module,exports){
+// <scriptSig> {serialized scriptPubKey script}
 
-  return this;
-};
+var Buffer = require('safe-buffer').Buffer
+var bscript = require('../../script')
+var typeforce = require('typeforce')
 
-EventEmitter.prototype.removeAllListeners = function(type) {
-  var key, listeners;
+var p2ms = require('../multisig/')
+var p2pk = require('../pubkey/')
+var p2pkh = require('../pubkeyhash/')
+var p2wpkho = require('../witnesspubkeyhash/output')
+var p2wsho = require('../witnessscripthash/output')
 
-  if (!this._events)
-    return this;
+function check (script, allowIncomplete) {
+  var chunks = bscript.decompile(script)
+  if (chunks.length < 1) return false
 
-  // not listening for removeListener, no need to emit
-  if (!this._events.removeListener) {
-    if (arguments.length === 0)
-      this._events = {};
-    else if (this._events[type])
-      delete this._events[type];
-    return this;
-  }
+  var lastChunk = chunks[chunks.length - 1]
+  if (!Buffer.isBuffer(lastChunk)) return false
 
-  // emit removeListener for all listeners on all events
-  if (arguments.length === 0) {
-    for (key in this._events) {
-      if (key === 'removeListener') continue;
-      this.removeAllListeners(key);
-    }
-    this.removeAllListeners('removeListener');
-    this._events = {};
-    return this;
-  }
+  var scriptSigChunks = bscript.decompile(bscript.compile(chunks.slice(0, -1)))
+  var redeemScriptChunks = bscript.decompile(lastChunk)
 
-  listeners = this._events[type];
+  // is redeemScript a valid script?
+  if (redeemScriptChunks.length === 0) return false
 
-  if (isFunction(listeners)) {
-    this.removeListener(type, listeners);
-  } else if (listeners) {
-    // LIFO order
-    while (listeners.length)
-      this.removeListener(type, listeners[listeners.length - 1]);
+  // is redeemScriptSig push only?
+  if (!bscript.isPushOnly(scriptSigChunks)) return false
+
+  // is witness?
+  if (chunks.length === 1) {
+    return p2wsho.check(redeemScriptChunks) ||
+      p2wpkho.check(redeemScriptChunks)
   }
-  delete this._events[type];
 
-  return this;
-};
+  // match types
+  if (p2pkh.input.check(scriptSigChunks) &&
+    p2pkh.output.check(redeemScriptChunks)) return true
 
-EventEmitter.prototype.listeners = function(type) {
-  var ret;
-  if (!this._events || !this._events[type])
-    ret = [];
-  else if (isFunction(this._events[type]))
-    ret = [this._events[type]];
-  else
-    ret = this._events[type].slice();
-  return ret;
-};
+  if (p2ms.input.check(scriptSigChunks, allowIncomplete) &&
+    p2ms.output.check(redeemScriptChunks)) return true
 
-EventEmitter.prototype.listenerCount = function(type) {
-  if (this._events) {
-    var evlistener = this._events[type];
+  if (p2pk.input.check(scriptSigChunks) &&
+    p2pk.output.check(redeemScriptChunks)) return true
 
-    if (isFunction(evlistener))
-      return 1;
-    else if (evlistener)
-      return evlistener.length;
-  }
-  return 0;
-};
+  return false
+}
+check.toJSON = function () { return 'scriptHash input' }
 
-EventEmitter.listenerCount = function(emitter, type) {
-  return emitter.listenerCount(type);
-};
+function encodeStack (redeemScriptStack, redeemScript) {
+  var serializedScriptPubKey = bscript.compile(redeemScript)
 
-function isFunction(arg) {
-  return typeof arg === 'function';
+  return [].concat(redeemScriptStack, serializedScriptPubKey)
 }
 
-function isNumber(arg) {
-  return typeof arg === 'number';
+function encode (redeemScriptSig, redeemScript) {
+  var redeemScriptStack = bscript.decompile(redeemScriptSig)
+
+  return bscript.compile(encodeStack(redeemScriptStack, redeemScript))
 }
 
-function isObject(arg) {
-  return typeof arg === 'object' && arg !== null;
+function decodeStack (stack) {
+  typeforce(check, stack)
+
+  return {
+    redeemScriptStack: stack.slice(0, -1),
+    redeemScript: stack[stack.length - 1]
+  }
 }
 
-function isUndefined(arg) {
-  return arg === void 0;
+function decode (buffer) {
+  var stack = bscript.decompile(buffer)
+  var result = decodeStack(stack)
+  result.redeemScriptSig = bscript.compile(result.redeemScriptStack)
+  delete result.redeemScriptStack
+  return result
 }
 
-},{}],7:[function(require,module,exports){
-exports.read = function (buffer, offset, isLE, mLen, nBytes) {
-  var e, m
-  var eLen = nBytes * 8 - mLen - 1
-  var eMax = (1 << eLen) - 1
-  var eBias = eMax >> 1
-  var nBits = -7
-  var i = isLE ? (nBytes - 1) : 0
-  var d = isLE ? -1 : 1
-  var s = buffer[offset + i]
+module.exports = {
+  check: check,
+  decode: decode,
+  decodeStack: decodeStack,
+  encode: encode,
+  encodeStack: encodeStack
+}
 
-  i += d
+},{"../../script":54,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"../witnesspubkeyhash/output":74,"../witnessscripthash/output":77,"safe-buffer":128,"typeforce":139}],69:[function(require,module,exports){
+// OP_HASH160 {scriptHash} OP_EQUAL
 
-  e = s & ((1 << (-nBits)) - 1)
-  s >>= (-nBits)
-  nBits += eLen
-  for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
 
-  m = e & ((1 << (-nBits)) - 1)
-  e >>= (-nBits)
-  nBits += mLen
-  for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
+function check (script) {
+  var buffer = bscript.compile(script)
 
-  if (e === 0) {
-    e = 1 - eBias
-  } else if (e === eMax) {
-    return m ? NaN : ((s ? -1 : 1) * Infinity)
-  } else {
-    m = m + Math.pow(2, mLen)
-    e = e - eBias
-  }
-  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
+  return buffer.length === 23 &&
+    buffer[0] === OPS.OP_HASH160 &&
+    buffer[1] === 0x14 &&
+    buffer[22] === OPS.OP_EQUAL
 }
+check.toJSON = function () { return 'scriptHash output' }
 
-exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
-  var e, m, c
-  var eLen = nBytes * 8 - mLen - 1
-  var eMax = (1 << eLen) - 1
-  var eBias = eMax >> 1
-  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
-  var i = isLE ? 0 : (nBytes - 1)
-  var d = isLE ? 1 : -1
-  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
-
-  value = Math.abs(value)
-
-  if (isNaN(value) || value === Infinity) {
-    m = isNaN(value) ? 1 : 0
-    e = eMax
-  } else {
-    e = Math.floor(Math.log(value) / Math.LN2)
-    if (value * (c = Math.pow(2, -e)) < 1) {
-      e--
-      c *= 2
-    }
-    if (e + eBias >= 1) {
-      value += rt / c
-    } else {
-      value += rt * Math.pow(2, 1 - eBias)
-    }
-    if (value * c >= 2) {
-      e++
-      c /= 2
-    }
+function encode (scriptHash) {
+  typeforce(types.Hash160bit, scriptHash)
 
-    if (e + eBias >= eMax) {
-      m = 0
-      e = eMax
-    } else if (e + eBias >= 1) {
-      m = (value * c - 1) * Math.pow(2, mLen)
-      e = e + eBias
-    } else {
-      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
-      e = 0
-    }
-  }
+  return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL])
+}
 
-  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
+function decode (buffer) {
+  typeforce(check, buffer)
 
-  e = (e << mLen) | m
-  eLen += mLen
-  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
+  return buffer.slice(2, 22)
+}
 
-  buffer[offset + i - d] |= s * 128
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
 }
 
-},{}],8:[function(require,module,exports){
-if (typeof Object.create === 'function') {
-  // implementation from standard node.js 'util' module
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    ctor.prototype = Object.create(superCtor.prototype, {
-      constructor: {
-        value: ctor,
-        enumerable: false,
-        writable: true,
-        configurable: true
-      }
-    });
-  };
-} else {
-  // old school shim for old browsers
-  module.exports = function inherits(ctor, superCtor) {
-    ctor.super_ = superCtor
-    var TempCtor = function () {}
-    TempCtor.prototype = superCtor.prototype
-    ctor.prototype = new TempCtor()
-    ctor.prototype.constructor = ctor
-  }
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],70:[function(require,module,exports){
+module.exports = {
+  output: require('./output')
 }
 
-},{}],9:[function(require,module,exports){
-/*!
- * Determine if an object is a Buffer
- *
- * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
- * @license  MIT
- */
+},{"./output":71}],71:[function(require,module,exports){
+// OP_RETURN {aa21a9ed} {commitment}
 
-// The _isBuffer check is for Safari 5-7 support, because it's missing
-// Object.prototype.constructor. Remove this eventually
-module.exports = function (obj) {
-  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
-}
+var Buffer = require('safe-buffer').Buffer
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
 
-function isBuffer (obj) {
-  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
-}
+var HEADER = Buffer.from('aa21a9ed', 'hex')
 
-// For Node v0.10 support. Remove this eventually.
-function isSlowBuffer (obj) {
-  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
+function check (script) {
+  var buffer = bscript.compile(script)
+
+  return buffer.length > 37 &&
+    buffer[0] === OPS.OP_RETURN &&
+    buffer[1] === 0x24 &&
+    buffer.slice(2, 6).equals(HEADER)
 }
 
-},{}],10:[function(require,module,exports){
-var toString = {}.toString;
+check.toJSON = function () { return 'Witness commitment output' }
 
-module.exports = Array.isArray || function (arr) {
-  return toString.call(arr) == '[object Array]';
-};
+function encode (commitment) {
+  typeforce(types.Hash256bit, commitment)
 
-},{}],11:[function(require,module,exports){
-(function (process){
-'use strict';
+  var buffer = Buffer.allocUnsafe(36)
+  HEADER.copy(buffer, 0)
+  commitment.copy(buffer, 4)
 
-if (!process.version ||
-    process.version.indexOf('v0.') === 0 ||
-    process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
-  module.exports = nextTick;
-} else {
-  module.exports = process.nextTick;
+  return bscript.compile([OPS.OP_RETURN, buffer])
 }
 
-function nextTick(fn, arg1, arg2, arg3) {
-  if (typeof fn !== 'function') {
-    throw new TypeError('"callback" argument must be a function');
-  }
-  var len = arguments.length;
-  var args, i;
-  switch (len) {
-  case 0:
-  case 1:
-    return process.nextTick(fn);
-  case 2:
-    return process.nextTick(function afterTickOne() {
-      fn.call(null, arg1);
-    });
-  case 3:
-    return process.nextTick(function afterTickTwo() {
-      fn.call(null, arg1, arg2);
-    });
-  case 4:
-    return process.nextTick(function afterTickThree() {
-      fn.call(null, arg1, arg2, arg3);
-    });
-  default:
-    args = new Array(len - 1);
-    i = 0;
-    while (i < args.length) {
-      args[i++] = arguments[i];
-    }
-    return process.nextTick(function afterTick() {
-      fn.apply(null, args);
-    });
-  }
+function decode (buffer) {
+  typeforce(check, buffer)
+
+  return bscript.decompile(buffer)[1].slice(4, 36)
 }
 
-}).call(this,require('_process'))
-},{"_process":12}],12:[function(require,module,exports){
-// shim for using process in browser
-var process = module.exports = {};
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
+}
 
-// cached from whatever global is present so that test runners that stub it
-// don't break things.  But we need to wrap it in a try catch in case it is
-// wrapped in strict mode code which doesn't define any globals.  It's inside a
-// function because try/catches deoptimize in certain engines.
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],72:[function(require,module,exports){
+arguments[4][57][0].apply(exports,arguments)
+},{"./input":73,"./output":74,"dup":57}],73:[function(require,module,exports){
+// {signature} {pubKey}
 
-var cachedSetTimeout;
-var cachedClearTimeout;
+var bscript = require('../../script')
+var typeforce = require('typeforce')
 
-function defaultSetTimout() {
-    throw new Error('setTimeout has not been defined');
-}
-function defaultClearTimeout () {
-    throw new Error('clearTimeout has not been defined');
+function isCompressedCanonicalPubKey (pubKey) {
+  return bscript.isCanonicalPubKey(pubKey) && pubKey.length === 33
 }
-(function () {
-    try {
-        if (typeof setTimeout === 'function') {
-            cachedSetTimeout = setTimeout;
-        } else {
-            cachedSetTimeout = defaultSetTimout;
-        }
-    } catch (e) {
-        cachedSetTimeout = defaultSetTimout;
-    }
-    try {
-        if (typeof clearTimeout === 'function') {
-            cachedClearTimeout = clearTimeout;
-        } else {
-            cachedClearTimeout = defaultClearTimeout;
-        }
-    } catch (e) {
-        cachedClearTimeout = defaultClearTimeout;
-    }
-} ())
-function runTimeout(fun) {
-    if (cachedSetTimeout === setTimeout) {
-        //normal enviroments in sane situations
-        return setTimeout(fun, 0);
-    }
-    // if setTimeout wasn't available but was latter defined
-    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
-        cachedSetTimeout = setTimeout;
-        return setTimeout(fun, 0);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedSetTimeout(fun, 0);
-    } catch(e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
-            return cachedSetTimeout.call(null, fun, 0);
-        } catch(e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
-            return cachedSetTimeout.call(this, fun, 0);
-        }
-    }
 
+function check (script) {
+  var chunks = bscript.decompile(script)
 
+  return chunks.length === 2 &&
+    bscript.isCanonicalSignature(chunks[0]) &&
+    isCompressedCanonicalPubKey(chunks[1])
 }
-function runClearTimeout(marker) {
-    if (cachedClearTimeout === clearTimeout) {
-        //normal enviroments in sane situations
-        return clearTimeout(marker);
-    }
-    // if clearTimeout wasn't available but was latter defined
-    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
-        cachedClearTimeout = clearTimeout;
-        return clearTimeout(marker);
-    }
-    try {
-        // when when somebody has screwed with setTimeout but no I.E. maddness
-        return cachedClearTimeout(marker);
-    } catch (e){
-        try {
-            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
-            return cachedClearTimeout.call(null, marker);
-        } catch (e){
-            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
-            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
-            return cachedClearTimeout.call(this, marker);
-        }
-    }
+check.toJSON = function () { return 'witnessPubKeyHash input' }
+
+function encodeStack (signature, pubKey) {
+  typeforce({
+    signature: bscript.isCanonicalSignature,
+    pubKey: isCompressedCanonicalPubKey
+  }, {
+    signature: signature,
+    pubKey: pubKey
+  })
 
+  return [signature, pubKey]
+}
 
+function decodeStack (stack) {
+  typeforce(check, stack)
 
+  return {
+    signature: stack[0],
+    pubKey: stack[1]
+  }
 }
-var queue = [];
-var draining = false;
-var currentQueue;
-var queueIndex = -1;
 
-function cleanUpNextTick() {
-    if (!draining || !currentQueue) {
-        return;
-    }
-    draining = false;
-    if (currentQueue.length) {
-        queue = currentQueue.concat(queue);
-    } else {
-        queueIndex = -1;
-    }
-    if (queue.length) {
-        drainQueue();
-    }
+module.exports = {
+  check: check,
+  decodeStack: decodeStack,
+  encodeStack: encodeStack
 }
 
-function drainQueue() {
-    if (draining) {
-        return;
-    }
-    var timeout = runTimeout(cleanUpNextTick);
-    draining = true;
+},{"../../script":54,"typeforce":139}],74:[function(require,module,exports){
+// OP_0 {pubKeyHash}
 
-    var len = queue.length;
-    while(len) {
-        currentQueue = queue;
-        queue = [];
-        while (++queueIndex < len) {
-            if (currentQueue) {
-                currentQueue[queueIndex].run();
-            }
-        }
-        queueIndex = -1;
-        len = queue.length;
-    }
-    currentQueue = null;
-    draining = false;
-    runClearTimeout(timeout);
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
+
+function check (script) {
+  var buffer = bscript.compile(script)
+
+  return buffer.length === 22 &&
+    buffer[0] === OPS.OP_0 &&
+    buffer[1] === 0x14
+}
+check.toJSON = function () { return 'Witness pubKeyHash output' }
+
+function encode (pubKeyHash) {
+  typeforce(types.Hash160bit, pubKeyHash)
+
+  return bscript.compile([OPS.OP_0, pubKeyHash])
 }
 
-process.nextTick = function (fun) {
-    var args = new Array(arguments.length - 1);
-    if (arguments.length > 1) {
-        for (var i = 1; i < arguments.length; i++) {
-            args[i - 1] = arguments[i];
-        }
-    }
-    queue.push(new Item(fun, args));
-    if (queue.length === 1 && !draining) {
-        runTimeout(drainQueue);
-    }
-};
+function decode (buffer) {
+  typeforce(check, buffer)
 
-// v8 likes predictible objects
-function Item(fun, array) {
-    this.fun = fun;
-    this.array = array;
+  return buffer.slice(2)
 }
-Item.prototype.run = function () {
-    this.fun.apply(null, this.array);
-};
-process.title = 'browser';
-process.browser = true;
-process.env = {};
-process.argv = [];
-process.version = ''; // empty string to avoid regexp issues
-process.versions = {};
 
-function noop() {}
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
+}
 
-process.on = noop;
-process.addListener = noop;
-process.once = noop;
-process.off = noop;
-process.removeListener = noop;
-process.removeAllListeners = noop;
-process.emit = noop;
-process.prependListener = noop;
-process.prependOnceListener = noop;
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],75:[function(require,module,exports){
+arguments[4][57][0].apply(exports,arguments)
+},{"./input":76,"./output":77,"dup":57}],76:[function(require,module,exports){
+(function (Buffer){
+// <scriptSig> {serialized scriptPubKey script}
 
-process.listeners = function (name) { return [] }
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
 
-process.binding = function (name) {
-    throw new Error('process.binding is not supported');
-};
+var p2ms = require('../multisig/')
+var p2pk = require('../pubkey/')
+var p2pkh = require('../pubkeyhash/')
 
-process.cwd = function () { return '/' };
-process.chdir = function (dir) {
-    throw new Error('process.chdir is not supported');
-};
-process.umask = function() { return 0; };
+function check (chunks, allowIncomplete) {
+  typeforce(types.Array, chunks)
+  if (chunks.length < 1) return false
 
-},{}],13:[function(require,module,exports){
-module.exports = require('./lib/_stream_duplex.js');
+  var witnessScript = chunks[chunks.length - 1]
+  if (!Buffer.isBuffer(witnessScript)) return false
 
-},{"./lib/_stream_duplex.js":14}],14:[function(require,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+  var witnessScriptChunks = bscript.decompile(witnessScript)
 
-// a duplex stream is just a stream that is both readable and writable.
-// Since JS doesn't have multiple prototypal inheritance, this class
-// prototypally inherits from Readable, and then parasitically from
-// Writable.
+  // is witnessScript a valid script?
+  if (witnessScriptChunks.length === 0) return false
 
-'use strict';
+  var witnessRawScriptSig = bscript.compile(chunks.slice(0, -1))
 
-/*<replacement>*/
+  // match types
+  if (p2pkh.input.check(witnessRawScriptSig) &&
+    p2pkh.output.check(witnessScriptChunks)) return true
 
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
+  if (p2ms.input.check(witnessRawScriptSig, allowIncomplete) &&
+    p2ms.output.check(witnessScriptChunks)) return true
 
-/*<replacement>*/
-var objectKeys = Object.keys || function (obj) {
-  var keys = [];
-  for (var key in obj) {
-    keys.push(key);
-  }return keys;
-};
-/*</replacement>*/
+  if (p2pk.input.check(witnessRawScriptSig) &&
+    p2pk.output.check(witnessScriptChunks)) return true
 
-module.exports = Duplex;
+  return false
+}
+check.toJSON = function () { return 'witnessScriptHash input' }
 
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
+function encodeStack (witnessData, witnessScript) {
+  typeforce({
+    witnessData: [types.Buffer],
+    witnessScript: types.Buffer
+  }, {
+    witnessData: witnessData,
+    witnessScript: witnessScript
+  })
 
-var Readable = require('./_stream_readable');
-var Writable = require('./_stream_writable');
+  return [].concat(witnessData, witnessScript)
+}
 
-util.inherits(Duplex, Readable);
+function decodeStack (chunks) {
+  typeforce(check, chunks)
+  return {
+    witnessData: chunks.slice(0, -1),
+    witnessScript: chunks[chunks.length - 1]
+  }
+}
 
-var keys = objectKeys(Writable.prototype);
-for (var v = 0; v < keys.length; v++) {
-  var method = keys[v];
-  if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
+module.exports = {
+  check: check,
+  decodeStack: decodeStack,
+  encodeStack: encodeStack
 }
 
-function Duplex(options) {
-  if (!(this instanceof Duplex)) return new Duplex(options);
+}).call(this,{"isBuffer":require("../../../../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
+},{"../../../../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"../../script":54,"../../types":80,"../multisig/":57,"../pubkey/":61,"../pubkeyhash/":64,"typeforce":139}],77:[function(require,module,exports){
+// OP_0 {scriptHash}
 
-  Readable.call(this, options);
-  Writable.call(this, options);
+var bscript = require('../../script')
+var types = require('../../types')
+var typeforce = require('typeforce')
+var OPS = require('bitcoin-ops')
 
-  if (options && options.readable === false) this.readable = false;
+function check (script) {
+  var buffer = bscript.compile(script)
 
-  if (options && options.writable === false) this.writable = false;
+  return buffer.length === 34 &&
+    buffer[0] === OPS.OP_0 &&
+    buffer[1] === 0x20
+}
+check.toJSON = function () { return 'Witness scriptHash output' }
 
-  this.allowHalfOpen = true;
-  if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
+function encode (scriptHash) {
+  typeforce(types.Hash256bit, scriptHash)
 
-  this.once('end', onend);
+  return bscript.compile([OPS.OP_0, scriptHash])
 }
 
-// the no-half-open enforcer
-function onend() {
-  // if we allow half-open state, or if the writable side ended,
-  // then we're ok.
-  if (this.allowHalfOpen || this._writableState.ended) return;
+function decode (buffer) {
+  typeforce(check, buffer)
 
-  // no more data can be written.
-  // But allow more writes to happen in this tick.
-  processNextTick(onEndNT, this);
+  return buffer.slice(2)
 }
 
-function onEndNT(self) {
-  self.end();
+module.exports = {
+  check: check,
+  decode: decode,
+  encode: encode
 }
 
-Object.defineProperty(Duplex.prototype, 'destroyed', {
-  get: function () {
-    if (this._readableState === undefined || this._writableState === undefined) {
-      return false;
-    }
-    return this._readableState.destroyed && this._writableState.destroyed;
-  },
-  set: function (value) {
-    // we ignore the value if the stream
-    // has not been initialized yet
-    if (this._readableState === undefined || this._writableState === undefined) {
-      return;
-    }
+},{"../../script":54,"../../types":80,"bitcoin-ops":42,"typeforce":139}],78:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var bcrypto = require('./crypto')
+var bscript = require('./script')
+var bufferutils = require('./bufferutils')
+var opcodes = require('bitcoin-ops')
+var typeforce = require('typeforce')
+var types = require('./types')
+var varuint = require('varuint-bitcoin')
 
-    // backward compatibility, the user is explicitly
-    // managing destroyed
-    this._readableState.destroyed = value;
-    this._writableState.destroyed = value;
-  }
-});
+function varSliceSize (someScript) {
+  var length = someScript.length
 
-Duplex.prototype._destroy = function (err, cb) {
-  this.push(null);
-  this.end();
+  return varuint.encodingLength(length) + length
+}
 
-  processNextTick(cb, err);
-};
+function vectorSize (someVector) {
+  var length = someVector.length
 
-function forEach(xs, f) {
-  for (var i = 0, l = xs.length; i < l; i++) {
-    f(xs[i], i);
-  }
+  return varuint.encodingLength(length) + someVector.reduce(function (sum, witness) {
+    return sum + varSliceSize(witness)
+  }, 0)
 }
-},{"./_stream_readable":16,"./_stream_writable":18,"core-util-is":5,"inherits":8,"process-nextick-args":11}],15:[function(require,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-// a passthrough stream.
-// basically just the most minimal sort of Transform stream.
-// Every written chunk gets output as-is.
+function Transaction () {
+  this.version = 1
+  this.locktime = 0
+  this.ins = []
+  this.outs = []
+}
 
-'use strict';
+Transaction.DEFAULT_SEQUENCE = 0xffffffff
+Transaction.SIGHASH_ALL = 0x01
+Transaction.SIGHASH_NONE = 0x02
+Transaction.SIGHASH_SINGLE = 0x03
+Transaction.SIGHASH_ANYONECANPAY = 0x80
+Transaction.ADVANCED_TRANSACTION_MARKER = 0x00
+Transaction.ADVANCED_TRANSACTION_FLAG = 0x01
 
-module.exports = PassThrough;
+var EMPTY_SCRIPT = Buffer.allocUnsafe(0)
+var EMPTY_WITNESS = []
+var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
+var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
+var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex')
+var BLANK_OUTPUT = {
+  script: EMPTY_SCRIPT,
+  valueBuffer: VALUE_UINT64_MAX
+}
 
-var Transform = require('./_stream_transform');
+Transaction.fromBuffer = function (buffer, __noStrict) {
+  var offset = 0
+  function readSlice (n) {
+    offset += n
+    return buffer.slice(offset - n, offset)
+  }
 
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
+  function readUInt32 () {
+    var i = buffer.readUInt32LE(offset)
+    offset += 4
+    return i
+  }
 
-util.inherits(PassThrough, Transform);
+  function readInt32 () {
+    var i = buffer.readInt32LE(offset)
+    offset += 4
+    return i
+  }
 
-function PassThrough(options) {
-  if (!(this instanceof PassThrough)) return new PassThrough(options);
+  function readUInt64 () {
+    var i = bufferutils.readUInt64LE(buffer, offset)
+    offset += 8
+    return i
+  }
 
-  Transform.call(this, options);
-}
+  function readVarInt () {
+    var vi = varuint.decode(buffer, offset)
+    offset += varuint.decode.bytes
+    return vi
+  }
 
-PassThrough.prototype._transform = function (chunk, encoding, cb) {
-  cb(null, chunk);
-};
-},{"./_stream_transform":17,"core-util-is":5,"inherits":8}],16:[function(require,module,exports){
-(function (process,global){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+  function readVarSlice () {
+    return readSlice(readVarInt())
+  }
 
-'use strict';
+  function readVector () {
+    var count = readVarInt()
+    var vector = []
+    for (var i = 0; i < count; i++) vector.push(readVarSlice())
+    return vector
+  }
 
-/*<replacement>*/
+  var tx = new Transaction()
+  tx.version = readInt32()
 
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
+  var marker = buffer.readUInt8(offset)
+  var flag = buffer.readUInt8(offset + 1)
 
-module.exports = Readable;
+  var hasWitnesses = false
+  if (marker === Transaction.ADVANCED_TRANSACTION_MARKER &&
+      flag === Transaction.ADVANCED_TRANSACTION_FLAG) {
+    offset += 2
+    hasWitnesses = true
+  }
 
-/*<replacement>*/
-var isArray = require('isarray');
-/*</replacement>*/
+  var vinLen = readVarInt()
+  for (var i = 0; i < vinLen; ++i) {
+    tx.ins.push({
+      hash: readSlice(32),
+      index: readUInt32(),
+      script: readVarSlice(),
+      sequence: readUInt32(),
+      witness: EMPTY_WITNESS
+    })
+  }
 
-/*<replacement>*/
-var Duplex;
-/*</replacement>*/
+  var voutLen = readVarInt()
+  for (i = 0; i < voutLen; ++i) {
+    tx.outs.push({
+      value: readUInt64(),
+      script: readVarSlice()
+    })
+  }
 
-Readable.ReadableState = ReadableState;
+  if (hasWitnesses) {
+    for (i = 0; i < vinLen; ++i) {
+      tx.ins[i].witness = readVector()
+    }
 
-/*<replacement>*/
-var EE = require('events').EventEmitter;
+    // was this pointless?
+    if (!tx.hasWitnesses()) throw new Error('Transaction has superfluous witness data')
+  }
 
-var EElistenerCount = function (emitter, type) {
-  return emitter.listeners(type).length;
-};
-/*</replacement>*/
+  tx.locktime = readUInt32()
 
-/*<replacement>*/
-var Stream = require('./internal/streams/stream');
-/*</replacement>*/
+  if (__noStrict) return tx
+  if (offset !== buffer.length) throw new Error('Transaction has unexpected data')
 
-// TODO(bmeurer): Change this back to const once hole checks are
-// properly optimized away early in Ignition+TurboFan.
-/*<replacement>*/
-var Buffer = require('safe-buffer').Buffer;
-var OurUint8Array = global.Uint8Array || function () {};
-function _uint8ArrayToBuffer(chunk) {
-  return Buffer.from(chunk);
-}
-function _isUint8Array(obj) {
-  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+  return tx
 }
-/*</replacement>*/
-
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
 
-/*<replacement>*/
-var debugUtil = require('util');
-var debug = void 0;
-if (debugUtil && debugUtil.debuglog) {
-  debug = debugUtil.debuglog('stream');
-} else {
-  debug = function () {};
+Transaction.fromHex = function (hex) {
+  return Transaction.fromBuffer(Buffer.from(hex, 'hex'))
 }
-/*</replacement>*/
 
-var BufferList = require('./internal/streams/BufferList');
-var destroyImpl = require('./internal/streams/destroy');
-var StringDecoder;
+Transaction.isCoinbaseHash = function (buffer) {
+  typeforce(types.Hash256bit, buffer)
+  for (var i = 0; i < 32; ++i) {
+    if (buffer[i] !== 0) return false
+  }
+  return true
+}
 
-util.inherits(Readable, Stream);
+Transaction.prototype.isCoinbase = function () {
+  return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash)
+}
 
-var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];
+Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) {
+  typeforce(types.tuple(
+    types.Hash256bit,
+    types.UInt32,
+    types.maybe(types.UInt32),
+    types.maybe(types.Buffer)
+  ), arguments)
 
-function prependListener(emitter, event, fn) {
-  // Sadly this is not cacheable as some libraries bundle their own
-  // event emitter implementation with them.
-  if (typeof emitter.prependListener === 'function') {
-    return emitter.prependListener(event, fn);
-  } else {
-    // This is a hack to make sure that our error handler is attached before any
-    // userland ones.  NEVER DO THIS. This is here only because this code needs
-    // to continue to work with older versions of Node.js that do not include
-    // the prependListener() method. The goal is to eventually remove this hack.
-    if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
+  if (types.Null(sequence)) {
+    sequence = Transaction.DEFAULT_SEQUENCE
   }
+
+  // Add the input and return the input's index
+  return (this.ins.push({
+    hash: hash,
+    index: index,
+    script: scriptSig || EMPTY_SCRIPT,
+    sequence: sequence,
+    witness: EMPTY_WITNESS
+  }) - 1)
 }
 
-function ReadableState(options, stream) {
-  Duplex = Duplex || require('./_stream_duplex');
+Transaction.prototype.addOutput = function (scriptPubKey, value) {
+  typeforce(types.tuple(types.Buffer, types.Satoshi), arguments)
 
-  options = options || {};
+  // Add the output and return the output's index
+  return (this.outs.push({
+    script: scriptPubKey,
+    value: value
+  }) - 1)
+}
 
-  // object stream flag. Used to make read(n) ignore n and to
-  // make all the buffer merging and length checks go away
-  this.objectMode = !!options.objectMode;
+Transaction.prototype.hasWitnesses = function () {
+  return this.ins.some(function (x) {
+    return x.witness.length !== 0
+  })
+}
 
-  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
+Transaction.prototype.weight = function () {
+  var base = this.__byteLength(false)
+  var total = this.__byteLength(true)
+  return base * 3 + total
+}
 
-  // the point at which it stops calling _read() to fill the buffer
-  // Note: 0 is a valid value, means "don't call _read preemptively ever"
-  var hwm = options.highWaterMark;
-  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
-  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
+Transaction.prototype.virtualSize = function () {
+  return Math.ceil(this.weight() / 4)
+}
 
-  // cast to ints.
-  this.highWaterMark = Math.floor(this.highWaterMark);
+Transaction.prototype.byteLength = function () {
+  return this.__byteLength(true)
+}
 
-  // A linked list is used to store data chunks instead of an array because the
-  // linked list can remove elements from the beginning faster than
-  // array.shift()
-  this.buffer = new BufferList();
-  this.length = 0;
-  this.pipes = null;
-  this.pipesCount = 0;
-  this.flowing = null;
-  this.ended = false;
-  this.endEmitted = false;
-  this.reading = false;
+Transaction.prototype.__byteLength = function (__allowWitness) {
+  var hasWitnesses = __allowWitness && this.hasWitnesses()
 
-  // a flag to be able to tell if the event 'readable'/'data' is emitted
-  // immediately, or on a later tick.  We set this to true at first, because
-  // any actions that shouldn't happen until "later" should generally also
-  // not happen before the first read call.
-  this.sync = true;
+  return (
+    (hasWitnesses ? 10 : 8) +
+    varuint.encodingLength(this.ins.length) +
+    varuint.encodingLength(this.outs.length) +
+    this.ins.reduce(function (sum, input) { return sum + 40 + varSliceSize(input.script) }, 0) +
+    this.outs.reduce(function (sum, output) { return sum + 8 + varSliceSize(output.script) }, 0) +
+    (hasWitnesses ? this.ins.reduce(function (sum, input) { return sum + vectorSize(input.witness) }, 0) : 0)
+  )
+}
 
-  // whenever we return null, then we set a flag to say
-  // that we're awaiting a 'readable' event emission.
-  this.needReadable = false;
-  this.emittedReadable = false;
-  this.readableListening = false;
-  this.resumeScheduled = false;
+Transaction.prototype.clone = function () {
+  var newTx = new Transaction()
+  newTx.version = this.version
+  newTx.locktime = this.locktime
 
-  // has it been destroyed
-  this.destroyed = false;
+  newTx.ins = this.ins.map(function (txIn) {
+    return {
+      hash: txIn.hash,
+      index: txIn.index,
+      script: txIn.script,
+      sequence: txIn.sequence,
+      witness: txIn.witness
+    }
+  })
 
-  // Crypto is kind of old and crusty.  Historically, its default string
-  // encoding is 'binary' so we have to make this configurable.
-  // Everything else in the universe uses 'utf8', though.
-  this.defaultEncoding = options.defaultEncoding || 'utf8';
+  newTx.outs = this.outs.map(function (txOut) {
+    return {
+      script: txOut.script,
+      value: txOut.value
+    }
+  })
 
-  // the number of writers that are awaiting a drain event in .pipe()s
-  this.awaitDrain = 0;
+  return newTx
+}
 
-  // if true, a maybeReadMore has been scheduled
-  this.readingMore = false;
+/**
+ * Hash transaction for signing a specific input.
+ *
+ * Bitcoin uses a different hash for each signed transaction input.
+ * This method copies the transaction, makes the necessary changes based on the
+ * hashType, and then hashes the result.
+ * This hash can then be used to sign the provided transaction input.
+ */
+Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) {
+  typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments)
 
-  this.decoder = null;
-  this.encoding = null;
-  if (options.encoding) {
-    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
-    this.decoder = new StringDecoder(options.encoding);
-    this.encoding = options.encoding;
-  }
-}
+  // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29
+  if (inIndex >= this.ins.length) return ONE
 
-function Readable(options) {
-  Duplex = Duplex || require('./_stream_duplex');
+  // ignore OP_CODESEPARATOR
+  var ourScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) {
+    return x !== opcodes.OP_CODESEPARATOR
+  }))
 
-  if (!(this instanceof Readable)) return new Readable(options);
+  var txTmp = this.clone()
 
-  this._readableState = new ReadableState(options, this);
+  // SIGHASH_NONE: ignore all outputs? (wildcard payee)
+  if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) {
+    txTmp.outs = []
 
-  // legacy
-  this.readable = true;
+    // ignore sequence numbers (except at inIndex)
+    txTmp.ins.forEach(function (input, i) {
+      if (i === inIndex) return
 
-  if (options) {
-    if (typeof options.read === 'function') this._read = options.read;
+      input.sequence = 0
+    })
 
-    if (typeof options.destroy === 'function') this._destroy = options.destroy;
-  }
+  // SIGHASH_SINGLE: ignore all outputs, except at the same index?
+  } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) {
+    // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60
+    if (inIndex >= this.outs.length) return ONE
 
-  Stream.call(this);
-}
+    // truncate outputs after
+    txTmp.outs.length = inIndex + 1
 
-Object.defineProperty(Readable.prototype, 'destroyed', {
-  get: function () {
-    if (this._readableState === undefined) {
-      return false;
-    }
-    return this._readableState.destroyed;
-  },
-  set: function (value) {
-    // we ignore the value if the stream
-    // has not been initialized yet
-    if (!this._readableState) {
-      return;
+    // "blank" outputs before
+    for (var i = 0; i < inIndex; i++) {
+      txTmp.outs[i] = BLANK_OUTPUT
     }
 
-    // backward compatibility, the user is explicitly
-    // managing destroyed
-    this._readableState.destroyed = value;
-  }
-});
+    // ignore sequence numbers (except at inIndex)
+    txTmp.ins.forEach(function (input, y) {
+      if (y === inIndex) return
 
-Readable.prototype.destroy = destroyImpl.destroy;
-Readable.prototype._undestroy = destroyImpl.undestroy;
-Readable.prototype._destroy = function (err, cb) {
-  this.push(null);
-  cb(err);
-};
+      input.sequence = 0
+    })
+  }
 
-// Manually shove something into the read() buffer.
-// This returns true if the highWaterMark has not been hit yet,
-// similar to how Writable.write() returns true if you should
-// write() some more.
-Readable.prototype.push = function (chunk, encoding) {
-  var state = this._readableState;
-  var skipChunkCheck;
+  // SIGHASH_ANYONECANPAY: ignore inputs entirely?
+  if (hashType & Transaction.SIGHASH_ANYONECANPAY) {
+    txTmp.ins = [txTmp.ins[inIndex]]
+    txTmp.ins[0].script = ourScript
 
-  if (!state.objectMode) {
-    if (typeof chunk === 'string') {
-      encoding = encoding || state.defaultEncoding;
-      if (encoding !== state.encoding) {
-        chunk = Buffer.from(chunk, encoding);
-        encoding = '';
-      }
-      skipChunkCheck = true;
-    }
+  // SIGHASH_ALL: only ignore input scripts
   } else {
-    skipChunkCheck = true;
+    // "blank" others input scripts
+    txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT })
+    txTmp.ins[inIndex].script = ourScript
   }
 
-  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
-};
+  // serialize and hash
+  var buffer = Buffer.allocUnsafe(txTmp.__byteLength(false) + 4)
+  buffer.writeInt32LE(hashType, buffer.length - 4)
+  txTmp.__toBuffer(buffer, 0, false)
 
-// Unshift should *always* be something directly out of read()
-Readable.prototype.unshift = function (chunk) {
-  return readableAddChunk(this, chunk, null, true, false);
-};
+  return bcrypto.hash256(buffer)
+}
 
-function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
-  var state = stream._readableState;
-  if (chunk === null) {
-    state.reading = false;
-    onEofChunk(stream, state);
-  } else {
-    var er;
-    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
-    if (er) {
-      stream.emit('error', er);
-    } else if (state.objectMode || chunk && chunk.length > 0) {
-      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
-        chunk = _uint8ArrayToBuffer(chunk);
-      }
-
-      if (addToFront) {
-        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
-      } else if (state.ended) {
-        stream.emit('error', new Error('stream.push() after EOF'));
-      } else {
-        state.reading = false;
-        if (state.decoder && !encoding) {
-          chunk = state.decoder.write(chunk);
-          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
-        } else {
-          addChunk(stream, state, chunk, false);
-        }
-      }
-    } else if (!addToFront) {
-      state.reading = false;
-    }
+Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, value, hashType) {
+  typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments)
+
+  var tbuffer, toffset
+  function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) }
+  function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) }
+  function writeUInt64 (i) { toffset = bufferutils.writeUInt64LE(tbuffer, i, toffset) }
+  function writeVarInt (i) {
+    varuint.encode(i, tbuffer, toffset)
+    toffset += varuint.encode.bytes
   }
+  function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) }
 
-  return needMoreData(state);
-}
+  var hashOutputs = ZERO
+  var hashPrevouts = ZERO
+  var hashSequence = ZERO
 
-function addChunk(stream, state, chunk, addToFront) {
-  if (state.flowing && state.length === 0 && !state.sync) {
-    stream.emit('data', chunk);
-    stream.read(0);
-  } else {
-    // update the buffer info.
-    state.length += state.objectMode ? 1 : chunk.length;
-    if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
+  if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) {
+    tbuffer = Buffer.allocUnsafe(36 * this.ins.length)
+    toffset = 0
 
-    if (state.needReadable) emitReadable(stream);
-  }
-  maybeReadMore(stream, state);
-}
+    this.ins.forEach(function (txIn) {
+      writeSlice(txIn.hash)
+      writeUInt32(txIn.index)
+    })
 
-function chunkInvalid(state, chunk) {
-  var er;
-  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
-    er = new TypeError('Invalid non-string/buffer chunk');
+    hashPrevouts = bcrypto.hash256(tbuffer)
   }
-  return er;
-}
-
-// if it's past the high water mark, we can push in some more.
-// Also, if we have no data yet, we can stand some
-// more bytes.  This is to work around cases where hwm=0,
-// such as the repl.  Also, if the push() triggered a
-// readable event, and the user called read(largeNumber) such that
-// needReadable was set, then we ought to push more, so that another
-// 'readable' event will be triggered.
-function needMoreData(state) {
-  return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
-}
 
-Readable.prototype.isPaused = function () {
-  return this._readableState.flowing === false;
-};
+  if (!(hashType & Transaction.SIGHASH_ANYONECANPAY) &&
+       (hashType & 0x1f) !== Transaction.SIGHASH_SINGLE &&
+       (hashType & 0x1f) !== Transaction.SIGHASH_NONE) {
+    tbuffer = Buffer.allocUnsafe(4 * this.ins.length)
+    toffset = 0
 
-// backwards compatibility.
-Readable.prototype.setEncoding = function (enc) {
-  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
-  this._readableState.decoder = new StringDecoder(enc);
-  this._readableState.encoding = enc;
-  return this;
-};
+    this.ins.forEach(function (txIn) {
+      writeUInt32(txIn.sequence)
+    })
 
-// Don't raise the hwm > 8MB
-var MAX_HWM = 0x800000;
-function computeNewHighWaterMark(n) {
-  if (n >= MAX_HWM) {
-    n = MAX_HWM;
-  } else {
-    // Get the next highest power of 2 to prevent increasing hwm excessively in
-    // tiny amounts
-    n--;
-    n |= n >>> 1;
-    n |= n >>> 2;
-    n |= n >>> 4;
-    n |= n >>> 8;
-    n |= n >>> 16;
-    n++;
+    hashSequence = bcrypto.hash256(tbuffer)
   }
-  return n;
-}
 
-// This function is designed to be inlinable, so please take care when making
-// changes to the function body.
-function howMuchToRead(n, state) {
-  if (n <= 0 || state.length === 0 && state.ended) return 0;
-  if (state.objectMode) return 1;
-  if (n !== n) {
-    // Only flow one buffer at a time
-    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
-  }
-  // If we're asking for more than the current hwm, then raise the hwm.
-  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
-  if (n <= state.length) return n;
-  // Don't have enough
-  if (!state.ended) {
-    state.needReadable = true;
-    return 0;
-  }
-  return state.length;
-}
+  if ((hashType & 0x1f) !== Transaction.SIGHASH_SINGLE &&
+      (hashType & 0x1f) !== Transaction.SIGHASH_NONE) {
+    var txOutsSize = this.outs.reduce(function (sum, output) {
+      return sum + 8 + varSliceSize(output.script)
+    }, 0)
 
-// you can override either this method, or the async _read(n) below.
-Readable.prototype.read = function (n) {
-  debug('read', n);
-  n = parseInt(n, 10);
-  var state = this._readableState;
-  var nOrig = n;
+    tbuffer = Buffer.allocUnsafe(txOutsSize)
+    toffset = 0
 
-  if (n !== 0) state.emittedReadable = false;
+    this.outs.forEach(function (out) {
+      writeUInt64(out.value)
+      writeVarSlice(out.script)
+    })
 
-  // if we're doing read(0) to trigger a readable event, but we
-  // already have a bunch of data in the buffer, then just trigger
-  // the 'readable' event and move on.
-  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
-    debug('read: emitReadable', state.length, state.ended);
-    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
-    return null;
-  }
+    hashOutputs = bcrypto.hash256(tbuffer)
+  } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE && inIndex < this.outs.length) {
+    var output = this.outs[inIndex]
 
-  n = howMuchToRead(n, state);
+    tbuffer = Buffer.allocUnsafe(8 + varSliceSize(output.script))
+    toffset = 0
+    writeUInt64(output.value)
+    writeVarSlice(output.script)
 
-  // if we've ended, and we're now clear, then finish it up.
-  if (n === 0 && state.ended) {
-    if (state.length === 0) endReadable(this);
-    return null;
+    hashOutputs = bcrypto.hash256(tbuffer)
   }
 
-  // All the actual chunk generation logic needs to be
-  // *below* the call to _read.  The reason is that in certain
-  // synthetic stream cases, such as passthrough streams, _read
-  // may be a completely synchronous operation which may change
-  // the state of the read buffer, providing enough data when
-  // before there was *not* enough.
-  //
-  // So, the steps are:
-  // 1. Figure out what the state of things will be after we do
-  // a read from the buffer.
-  //
-  // 2. If that resulting state will trigger a _read, then call _read.
-  // Note that this may be asynchronous, or synchronous.  Yes, it is
-  // deeply ugly to write APIs this way, but that still doesn't mean
-  // that the Readable class should behave improperly, as streams are
-  // designed to be sync/async agnostic.
-  // Take note if the _read call is sync or async (ie, if the read call
-  // has returned yet), so that we know whether or not it's safe to emit
-  // 'readable' etc.
-  //
-  // 3. Actually pull the requested chunks out of the buffer and return.
+  tbuffer = Buffer.allocUnsafe(156 + varSliceSize(prevOutScript))
+  toffset = 0
 
-  // if we need a readable event, then we need to do some reading.
-  var doRead = state.needReadable;
-  debug('need readable', doRead);
+  var input = this.ins[inIndex]
+  writeUInt32(this.version)
+  writeSlice(hashPrevouts)
+  writeSlice(hashSequence)
+  writeSlice(input.hash)
+  writeUInt32(input.index)
+  writeVarSlice(prevOutScript)
+  writeUInt64(value)
+  writeUInt32(input.sequence)
+  writeSlice(hashOutputs)
+  writeUInt32(this.locktime)
+  writeUInt32(hashType)
+  return bcrypto.hash256(tbuffer)
+}
 
-  // if we currently have less than the highWaterMark, then also read some
-  if (state.length === 0 || state.length - n < state.highWaterMark) {
-    doRead = true;
-    debug('length less than watermark', doRead);
-  }
+Transaction.prototype.getHash = function () {
+  return bcrypto.hash256(this.__toBuffer(undefined, undefined, false))
+}
 
-  // however, if we've ended, then there's no point, and if we're already
-  // reading, then it's unnecessary.
-  if (state.ended || state.reading) {
-    doRead = false;
-    debug('reading or ended', doRead);
-  } else if (doRead) {
-    debug('do read');
-    state.reading = true;
-    state.sync = true;
-    // if the length is currently zero, then we *need* a readable event.
-    if (state.length === 0) state.needReadable = true;
-    // call internal read method
-    this._read(state.highWaterMark);
-    state.sync = false;
-    // If _read pushed data synchronously, then `reading` will be false,
-    // and we need to re-evaluate how much data we can return to the user.
-    if (!state.reading) n = howMuchToRead(nOrig, state);
-  }
+Transaction.prototype.getId = function () {
+  // transaction hash's are displayed in reverse order
+  return this.getHash().reverse().toString('hex')
+}
 
-  var ret;
-  if (n > 0) ret = fromList(n, state);else ret = null;
+Transaction.prototype.toBuffer = function (buffer, initialOffset) {
+  return this.__toBuffer(buffer, initialOffset, true)
+}
 
-  if (ret === null) {
-    state.needReadable = true;
-    n = 0;
-  } else {
-    state.length -= n;
+Transaction.prototype.__toBuffer = function (buffer, initialOffset, __allowWitness) {
+  if (!buffer) buffer = Buffer.allocUnsafe(this.__byteLength(__allowWitness))
+
+  var offset = initialOffset || 0
+  function writeSlice (slice) { offset += slice.copy(buffer, offset) }
+  function writeUInt8 (i) { offset = buffer.writeUInt8(i, offset) }
+  function writeUInt32 (i) { offset = buffer.writeUInt32LE(i, offset) }
+  function writeInt32 (i) { offset = buffer.writeInt32LE(i, offset) }
+  function writeUInt64 (i) { offset = bufferutils.writeUInt64LE(buffer, i, offset) }
+  function writeVarInt (i) {
+    varuint.encode(i, buffer, offset)
+    offset += varuint.encode.bytes
   }
+  function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) }
+  function writeVector (vector) { writeVarInt(vector.length); vector.forEach(writeVarSlice) }
 
-  if (state.length === 0) {
-    // If we have nothing in the buffer, then we want to know
-    // as soon as we *do* get something into the buffer.
-    if (!state.ended) state.needReadable = true;
+  writeInt32(this.version)
 
-    // If we tried to read() past the EOF, then emit end on the next tick.
-    if (nOrig !== n && state.ended) endReadable(this);
+  var hasWitnesses = __allowWitness && this.hasWitnesses()
+
+  if (hasWitnesses) {
+    writeUInt8(Transaction.ADVANCED_TRANSACTION_MARKER)
+    writeUInt8(Transaction.ADVANCED_TRANSACTION_FLAG)
   }
 
-  if (ret !== null) this.emit('data', ret);
+  writeVarInt(this.ins.length)
 
-  return ret;
-};
+  this.ins.forEach(function (txIn) {
+    writeSlice(txIn.hash)
+    writeUInt32(txIn.index)
+    writeVarSlice(txIn.script)
+    writeUInt32(txIn.sequence)
+  })
 
-function onEofChunk(stream, state) {
-  if (state.ended) return;
-  if (state.decoder) {
-    var chunk = state.decoder.end();
-    if (chunk && chunk.length) {
-      state.buffer.push(chunk);
-      state.length += state.objectMode ? 1 : chunk.length;
+  writeVarInt(this.outs.length)
+  this.outs.forEach(function (txOut) {
+    if (!txOut.valueBuffer) {
+      writeUInt64(txOut.value)
+    } else {
+      writeSlice(txOut.valueBuffer)
     }
-  }
-  state.ended = true;
 
-  // emit 'readable' now to make sure it gets picked up.
-  emitReadable(stream);
-}
+    writeVarSlice(txOut.script)
+  })
 
-// Don't emit readable right away in sync mode, because this can trigger
-// another read() call => stack overflow.  This way, it might trigger
-// a nextTick recursion warning, but that's not so bad.
-function emitReadable(stream) {
-  var state = stream._readableState;
-  state.needReadable = false;
-  if (!state.emittedReadable) {
-    debug('emitReadable', state.flowing);
-    state.emittedReadable = true;
-    if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
+  if (hasWitnesses) {
+    this.ins.forEach(function (input) {
+      writeVector(input.witness)
+    })
   }
+
+  writeUInt32(this.locktime)
+
+  // avoid slicing unless necessary
+  if (initialOffset !== undefined) return buffer.slice(initialOffset, offset)
+  return buffer
 }
 
-function emitReadable_(stream) {
-  debug('emit readable');
-  stream.emit('readable');
-  flow(stream);
+Transaction.prototype.toHex = function () {
+  return this.toBuffer().toString('hex')
 }
 
-// at this point, the user has presumably seen the 'readable' event,
-// and called read() to consume some data.  that may have triggered
-// in turn another _read(n) call, in which case reading = true if
-// it's in progress.
-// However, if we're not ended, or reading, and the length < hwm,
-// then go ahead and try to read some more preemptively.
-function maybeReadMore(stream, state) {
-  if (!state.readingMore) {
-    state.readingMore = true;
-    processNextTick(maybeReadMore_, stream, state);
-  }
+Transaction.prototype.setInputScript = function (index, scriptSig) {
+  typeforce(types.tuple(types.Number, types.Buffer), arguments)
+
+  this.ins[index].script = scriptSig
 }
 
-function maybeReadMore_(stream, state) {
-  var len = state.length;
-  while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
-    debug('maybeReadMore read 0');
-    stream.read(0);
-    if (len === state.length)
-      // didn't get any data, stop spinning.
-      break;else len = state.length;
-  }
-  state.readingMore = false;
+Transaction.prototype.setWitness = function (index, witness) {
+  typeforce(types.tuple(types.Number, [types.Buffer]), arguments)
+
+  this.ins[index].witness = witness
 }
 
-// abstract method.  to be overridden in specific implementation classes.
-// call cb(er, data) where data is <= n in length.
-// for virtual (non-string, non-buffer) streams, "length" is somewhat
-// arbitrary, and perhaps not very meaningful.
-Readable.prototype._read = function (n) {
-  this.emit('error', new Error('_read() is not implemented'));
-};
+module.exports = Transaction
 
-Readable.prototype.pipe = function (dest, pipeOpts) {
-  var src = this;
-  var state = this._readableState;
+},{"./bufferutils":46,"./crypto":47,"./script":54,"./types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139,"varuint-bitcoin":141}],79:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var baddress = require('./address')
+var bcrypto = require('./crypto')
+var bscript = require('./script')
+var btemplates = require('./templates')
+var networks = require('./networks')
+var ops = require('bitcoin-ops')
+var typeforce = require('typeforce')
+var types = require('./types')
+var scriptTypes = btemplates.types
+var SIGNABLE = [btemplates.types.P2PKH, btemplates.types.P2PK, btemplates.types.MULTISIG]
+var P2SH = SIGNABLE.concat([btemplates.types.P2WPKH, btemplates.types.P2WSH])
 
-  switch (state.pipesCount) {
-    case 0:
-      state.pipes = dest;
-      break;
-    case 1:
-      state.pipes = [state.pipes, dest];
-      break;
-    default:
-      state.pipes.push(dest);
-      break;
-  }
-  state.pipesCount += 1;
-  debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
+var ECPair = require('./ecpair')
+var ECSignature = require('./ecsignature')
+var Transaction = require('./transaction')
 
-  var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
+function supportedType (type) {
+  return SIGNABLE.indexOf(type) !== -1
+}
 
-  var endFn = doEnd ? onend : unpipe;
-  if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
+function supportedP2SHType (type) {
+  return P2SH.indexOf(type) !== -1
+}
 
-  dest.on('unpipe', onunpipe);
-  function onunpipe(readable, unpipeInfo) {
-    debug('onunpipe');
-    if (readable === src) {
-      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
-        unpipeInfo.hasUnpiped = true;
-        cleanup();
+function extractChunks (type, chunks, script) {
+  var pubKeys = []
+  var signatures = []
+  switch (type) {
+    case scriptTypes.P2PKH:
+      // if (redeemScript) throw new Error('Nonstandard... P2SH(P2PKH)')
+      pubKeys = chunks.slice(1)
+      signatures = chunks.slice(0, 1)
+      break
+
+    case scriptTypes.P2PK:
+      pubKeys[0] = script ? btemplates.pubKey.output.decode(script) : undefined
+      signatures = chunks.slice(0, 1)
+      break
+
+    case scriptTypes.MULTISIG:
+      if (script) {
+        var multisig = btemplates.multisig.output.decode(script)
+        pubKeys = multisig.pubKeys
       }
-    }
+
+      signatures = chunks.slice(1).map(function (chunk) {
+        return chunk.length === 0 ? undefined : chunk
+      })
+      break
   }
 
-  function onend() {
-    debug('onend');
-    dest.end();
+  return {
+    pubKeys: pubKeys,
+    signatures: signatures
   }
+}
+function expandInput (scriptSig, witnessStack) {
+  if (scriptSig.length === 0 && witnessStack.length === 0) return {}
 
-  // when the dest drains, it reduces the awaitDrain counter
-  // on the source.  This would be more elegant with a .once()
-  // handler in flow(), but adding and removing repeatedly is
-  // too slow.
-  var ondrain = pipeOnDrain(src);
-  dest.on('drain', ondrain);
+  var prevOutScript
+  var prevOutType
+  var scriptType
+  var script
+  var redeemScript
+  var witnessScript
+  var witnessScriptType
+  var redeemScriptType
+  var witness = false
+  var p2wsh = false
+  var p2sh = false
+  var witnessProgram
+  var chunks
 
-  var cleanedUp = false;
-  function cleanup() {
-    debug('cleanup');
-    // cleanup event handlers once the pipe is broken
-    dest.removeListener('close', onclose);
-    dest.removeListener('finish', onfinish);
-    dest.removeListener('drain', ondrain);
-    dest.removeListener('error', onerror);
-    dest.removeListener('unpipe', onunpipe);
-    src.removeListener('end', onend);
-    src.removeListener('end', unpipe);
-    src.removeListener('data', ondata);
+  var scriptSigChunks = bscript.decompile(scriptSig)
+  var sigType = btemplates.classifyInput(scriptSigChunks, true)
+  if (sigType === scriptTypes.P2SH) {
+    p2sh = true
+    redeemScript = scriptSigChunks[scriptSigChunks.length - 1]
+    redeemScriptType = btemplates.classifyOutput(redeemScript)
+    prevOutScript = btemplates.scriptHash.output.encode(bcrypto.hash160(redeemScript))
+    prevOutType = scriptTypes.P2SH
+    script = redeemScript
+  }
 
-    cleanedUp = true;
+  var classifyWitness = btemplates.classifyWitness(witnessStack, true)
+  if (classifyWitness === scriptTypes.P2WSH) {
+    witnessScript = witnessStack[witnessStack.length - 1]
+    witnessScriptType = btemplates.classifyOutput(witnessScript)
+    p2wsh = true
+    witness = true
+    if (scriptSig.length === 0) {
+      prevOutScript = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript))
+      prevOutType = scriptTypes.P2WSH
+      if (redeemScript !== undefined) {
+        throw new Error('Redeem script given when unnecessary')
+      }
+      // bare witness
+    } else {
+      if (!redeemScript) {
+        throw new Error('No redeemScript provided for P2WSH, but scriptSig non-empty')
+      }
+      witnessProgram = btemplates.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript))
+      if (!redeemScript.equals(witnessProgram)) {
+        throw new Error('Redeem script didn\'t match witnessScript')
+      }
+    }
 
-    // if the reader is waiting for a drain event from this
-    // specific writer, then it would cause it to never start
-    // flowing again.
-    // So, if this is awaiting a drain, then we just call it now.
-    // If we don't know, then assume that we are waiting for one.
-    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
-  }
+    if (!supportedType(btemplates.classifyOutput(witnessScript))) {
+      throw new Error('unsupported witness script')
+    }
 
-  // If the user pushes more data while we're writing to dest then we'll end up
-  // in ondata again. However, we only want to increase awaitDrain once because
-  // dest will only emit one 'drain' event for the multiple writes.
-  // => Introduce a guard on increasing awaitDrain.
-  var increasedAwaitDrain = false;
-  src.on('data', ondata);
-  function ondata(chunk) {
-    debug('ondata');
-    increasedAwaitDrain = false;
-    var ret = dest.write(chunk);
-    if (false === ret && !increasedAwaitDrain) {
-      // If the user unpiped during `dest.write()`, it is possible
-      // to get stuck in a permanently paused state if that write
-      // also returned false.
-      // => Check whether `dest` is still a piping destination.
-      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
-        debug('false write response, pause', src._readableState.awaitDrain);
-        src._readableState.awaitDrain++;
-        increasedAwaitDrain = true;
+    script = witnessScript
+    scriptType = witnessScriptType
+    chunks = witnessStack.slice(0, -1)
+  } else if (classifyWitness === scriptTypes.P2WPKH) {
+    witness = true
+    var key = witnessStack[witnessStack.length - 1]
+    var keyHash = bcrypto.hash160(key)
+    if (scriptSig.length === 0) {
+      prevOutScript = btemplates.witnessPubKeyHash.output.encode(keyHash)
+      prevOutType = scriptTypes.P2WPKH
+      if (typeof redeemScript !== 'undefined') {
+        throw new Error('Redeem script given when unnecessary')
+      }
+    } else {
+      if (!redeemScript) {
+        throw new Error('No redeemScript provided for P2WPKH, but scriptSig wasn\'t empty')
+      }
+      witnessProgram = btemplates.witnessPubKeyHash.output.encode(keyHash)
+      if (!redeemScript.equals(witnessProgram)) {
+        throw new Error('Redeem script did not have the right witness program')
       }
-      src.pause();
     }
-  }
 
-  // if the dest has an error, then stop piping into it.
-  // however, don't suppress the throwing behavior for this.
-  function onerror(er) {
-    debug('onerror', er);
-    unpipe();
-    dest.removeListener('error', onerror);
-    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
+    scriptType = scriptTypes.P2PKH
+    chunks = witnessStack
+  } else if (redeemScript) {
+    if (!supportedP2SHType(redeemScriptType)) {
+      throw new Error('Bad redeemscript!')
+    }
+
+    script = redeemScript
+    scriptType = redeemScriptType
+    chunks = scriptSigChunks.slice(0, -1)
+  } else {
+    prevOutType = scriptType = btemplates.classifyInput(scriptSig)
+    chunks = scriptSigChunks
   }
 
-  // Make sure our error handler is attached before userland ones.
-  prependListener(dest, 'error', onerror);
+  var expanded = extractChunks(scriptType, chunks, script)
 
-  // Both close and finish should trigger unpipe, but only once.
-  function onclose() {
-    dest.removeListener('finish', onfinish);
-    unpipe();
+  var result = {
+    pubKeys: expanded.pubKeys,
+    signatures: expanded.signatures,
+    prevOutScript: prevOutScript,
+    prevOutType: prevOutType,
+    signType: scriptType,
+    signScript: script,
+    witness: Boolean(witness)
   }
-  dest.once('close', onclose);
-  function onfinish() {
-    debug('onfinish');
-    dest.removeListener('close', onclose);
-    unpipe();
+
+  if (p2sh) {
+    result.redeemScript = redeemScript
+    result.redeemScriptType = redeemScriptType
   }
-  dest.once('finish', onfinish);
 
-  function unpipe() {
-    debug('unpipe');
-    src.unpipe(dest);
+  if (p2wsh) {
+    result.witnessScript = witnessScript
+    result.witnessScriptType = witnessScriptType
   }
 
-  // tell the dest that it's being piped to
-  dest.emit('pipe', src);
+  return result
+}
 
-  // start the flow if it hasn't been started already.
-  if (!state.flowing) {
-    debug('pipe resume');
-    src.resume();
-  }
+// could be done in expandInput, but requires the original Transaction for hashForSignature
+function fixMultisigOrder (input, transaction, vin) {
+  if (input.redeemScriptType !== scriptTypes.MULTISIG || !input.redeemScript) return
+  if (input.pubKeys.length === input.signatures.length) return
 
-  return dest;
-};
+  var unmatched = input.signatures.concat()
 
-function pipeOnDrain(src) {
-  return function () {
-    var state = src._readableState;
-    debug('pipeOnDrain', state.awaitDrain);
-    if (state.awaitDrain) state.awaitDrain--;
-    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
-      state.flowing = true;
-      flow(src);
-    }
-  };
-}
+  input.signatures = input.pubKeys.map(function (pubKey) {
+    var keyPair = ECPair.fromPublicKeyBuffer(pubKey)
+    var match
 
-Readable.prototype.unpipe = function (dest) {
-  var state = this._readableState;
-  var unpipeInfo = { hasUnpiped: false };
+    // check for a signature
+    unmatched.some(function (signature, i) {
+      // skip if undefined || OP_0
+      if (!signature) return false
 
-  // if we're not piping anywhere, then do nothing.
-  if (state.pipesCount === 0) return this;
+      // TODO: avoid O(n) hashForSignature
+      var parsed = ECSignature.parseScriptSignature(signature)
+      var hash = transaction.hashForSignature(vin, input.redeemScript, parsed.hashType)
 
-  // just one destination.  most common case.
-  if (state.pipesCount === 1) {
-    // passed in one, but it's not the right one.
-    if (dest && dest !== state.pipes) return this;
+      // skip if signature does not match pubKey
+      if (!keyPair.verify(hash, parsed.signature)) return false
 
-    if (!dest) dest = state.pipes;
+      // remove matched signature from unmatched
+      unmatched[i] = undefined
+      match = signature
 
-    // got a match.
-    state.pipes = null;
-    state.pipesCount = 0;
-    state.flowing = false;
-    if (dest) dest.emit('unpipe', this, unpipeInfo);
-    return this;
-  }
+      return true
+    })
 
-  // slow case. multiple pipe destinations.
+    return match
+  })
+}
 
-  if (!dest) {
-    // remove all.
-    var dests = state.pipes;
-    var len = state.pipesCount;
-    state.pipes = null;
-    state.pipesCount = 0;
-    state.flowing = false;
+function expandOutput (script, scriptType, ourPubKey) {
+  typeforce(types.Buffer, script)
 
-    for (var i = 0; i < len; i++) {
-      dests[i].emit('unpipe', this, unpipeInfo);
-    }return this;
+  var scriptChunks = bscript.decompile(script)
+  if (!scriptType) {
+    scriptType = btemplates.classifyOutput(script)
   }
 
-  // try to find the right one.
-  var index = indexOf(state.pipes, dest);
-  if (index === -1) return this;
-
-  state.pipes.splice(index, 1);
-  state.pipesCount -= 1;
-  if (state.pipesCount === 1) state.pipes = state.pipes[0];
+  var pubKeys = []
 
-  dest.emit('unpipe', this, unpipeInfo);
+  switch (scriptType) {
+    // does our hash160(pubKey) match the output scripts?
+    case scriptTypes.P2PKH:
+      if (!ourPubKey) break
 
-  return this;
-};
+      var pkh1 = scriptChunks[2]
+      var pkh2 = bcrypto.hash160(ourPubKey)
+      if (pkh1.equals(pkh2)) pubKeys = [ourPubKey]
+      break
 
-// set up data events if they are asked for
-// Ensure readable listeners eventually get something
-Readable.prototype.on = function (ev, fn) {
-  var res = Stream.prototype.on.call(this, ev, fn);
+    // does our hash160(pubKey) match the output scripts?
+    case scriptTypes.P2WPKH:
+      if (!ourPubKey) break
 
-  if (ev === 'data') {
-    // Start flowing on next tick if stream isn't explicitly paused
-    if (this._readableState.flowing !== false) this.resume();
-  } else if (ev === 'readable') {
-    var state = this._readableState;
-    if (!state.endEmitted && !state.readableListening) {
-      state.readableListening = state.needReadable = true;
-      state.emittedReadable = false;
-      if (!state.reading) {
-        processNextTick(nReadingNextTick, this);
-      } else if (state.length) {
-        emitReadable(this);
-      }
-    }
-  }
+      var wpkh1 = scriptChunks[1]
+      var wpkh2 = bcrypto.hash160(ourPubKey)
+      if (wpkh1.equals(wpkh2)) pubKeys = [ourPubKey]
+      break
 
-  return res;
-};
-Readable.prototype.addListener = Readable.prototype.on;
+    case scriptTypes.P2PK:
+      pubKeys = scriptChunks.slice(0, 1)
+      break
 
-function nReadingNextTick(self) {
-  debug('readable nexttick read 0');
-  self.read(0);
-}
+    case scriptTypes.MULTISIG:
+      pubKeys = scriptChunks.slice(1, -2)
+      break
 
-// pause() and resume() are remnants of the legacy readable stream API
-// If the user uses them, then switch into old mode.
-Readable.prototype.resume = function () {
-  var state = this._readableState;
-  if (!state.flowing) {
-    debug('resume');
-    state.flowing = true;
-    resume(this, state);
+    default: return { scriptType: scriptType }
   }
-  return this;
-};
 
-function resume(stream, state) {
-  if (!state.resumeScheduled) {
-    state.resumeScheduled = true;
-    processNextTick(resume_, stream, state);
+  return {
+    pubKeys: pubKeys,
+    scriptType: scriptType,
+    signatures: pubKeys.map(function () { return undefined })
   }
 }
 
-function resume_(stream, state) {
-  if (!state.reading) {
-    debug('resume read 0');
-    stream.read(0);
-  }
+function checkP2SHInput (input, redeemScriptHash) {
+  if (input.prevOutType) {
+    if (input.prevOutType !== scriptTypes.P2SH) throw new Error('PrevOutScript must be P2SH')
 
-  state.resumeScheduled = false;
-  state.awaitDrain = 0;
-  stream.emit('resume');
-  flow(stream);
-  if (state.flowing && !state.reading) stream.read(0);
+    var prevOutScriptScriptHash = bscript.decompile(input.prevOutScript)[1]
+    if (!prevOutScriptScriptHash.equals(redeemScriptHash)) throw new Error('Inconsistent hash160(RedeemScript)')
+  }
 }
 
-Readable.prototype.pause = function () {
-  debug('call pause flowing=%j', this._readableState.flowing);
-  if (false !== this._readableState.flowing) {
-    debug('pause');
-    this._readableState.flowing = false;
-    this.emit('pause');
-  }
-  return this;
-};
+function checkP2WSHInput (input, witnessScriptHash) {
+  if (input.prevOutType) {
+    if (input.prevOutType !== scriptTypes.P2WSH) throw new Error('PrevOutScript must be P2WSH')
 
-function flow(stream) {
-  var state = stream._readableState;
-  debug('flow', state.flowing);
-  while (state.flowing && stream.read() !== null) {}
+    var scriptHash = bscript.decompile(input.prevOutScript)[1]
+    if (!scriptHash.equals(witnessScriptHash)) throw new Error('Inconsistent sha25(WitnessScript)')
+  }
 }
 
-// wrap an old-style stream as the async data source.
-// This is *not* part of the readable stream interface.
-// It is an ugly unfortunate mess of history.
-Readable.prototype.wrap = function (stream) {
-  var state = this._readableState;
-  var paused = false;
-
-  var self = this;
-  stream.on('end', function () {
-    debug('wrapped end');
-    if (state.decoder && !state.ended) {
-      var chunk = state.decoder.end();
-      if (chunk && chunk.length) self.push(chunk);
-    }
+function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScript) {
+  var expanded
+  var prevOutType
+  var prevOutScript
 
-    self.push(null);
-  });
+  var p2sh = false
+  var p2shType
+  var redeemScriptHash
 
-  stream.on('data', function (chunk) {
-    debug('wrapped data');
-    if (state.decoder) chunk = state.decoder.write(chunk);
+  var witness = false
+  var p2wsh = false
+  var witnessType
+  var witnessScriptHash
 
-    // don't skip over falsy values in objectMode
-    if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
+  var signType
+  var signScript
 
-    var ret = self.push(chunk);
-    if (!ret) {
-      paused = true;
-      stream.pause();
-    }
-  });
+  if (redeemScript && witnessScript) {
+    redeemScriptHash = bcrypto.hash160(redeemScript)
+    witnessScriptHash = bcrypto.sha256(witnessScript)
+    checkP2SHInput(input, redeemScriptHash)
 
-  // proxy all the other methods.
-  // important when wrapping filters and duplexes.
-  for (var i in stream) {
-    if (this[i] === undefined && typeof stream[i] === 'function') {
-      this[i] = function (method) {
-        return function () {
-          return stream[method].apply(stream, arguments);
-        };
-      }(i);
-    }
-  }
+    if (!redeemScript.equals(btemplates.witnessScriptHash.output.encode(witnessScriptHash))) throw new Error('Witness script inconsistent with redeem script')
 
-  // proxy certain important events.
-  for (var n = 0; n < kProxyEvents.length; n++) {
-    stream.on(kProxyEvents[n], self.emit.bind(self, kProxyEvents[n]));
-  }
+    expanded = expandOutput(witnessScript, undefined, kpPubKey)
+    if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"')
 
-  // when we try to consume some more bytes, simply unpause the
-  // underlying stream.
-  self._read = function (n) {
-    debug('wrapped _read', n);
-    if (paused) {
-      paused = false;
-      stream.resume();
-    }
-  };
+    prevOutType = btemplates.types.P2SH
+    prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash)
+    p2sh = witness = p2wsh = true
+    p2shType = btemplates.types.P2WSH
+    signType = witnessType = expanded.scriptType
+    signScript = witnessScript
+  } else if (redeemScript) {
+    redeemScriptHash = bcrypto.hash160(redeemScript)
+    checkP2SHInput(input, redeemScriptHash)
 
-  return self;
-};
+    expanded = expandOutput(redeemScript, undefined, kpPubKey)
+    if (!expanded.pubKeys) throw new Error('RedeemScript not supported "' + bscript.toASM(redeemScript) + '"')
 
-// exposed for testing purposes only.
-Readable._fromList = fromList;
+    prevOutType = btemplates.types.P2SH
+    prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash)
+    p2sh = true
+    signType = p2shType = expanded.scriptType
+    signScript = redeemScript
+    witness = signType === btemplates.types.P2WPKH
+  } else if (witnessScript) {
+    witnessScriptHash = bcrypto.sha256(witnessScript)
+    checkP2WSHInput(input, witnessScriptHash)
 
-// Pluck off n bytes from an array of buffers.
-// Length is the combined lengths of all the buffers in the list.
-// This function is designed to be inlinable, so please take care when making
-// changes to the function body.
-function fromList(n, state) {
-  // nothing buffered
-  if (state.length === 0) return null;
+    expanded = expandOutput(witnessScript, undefined, kpPubKey)
+    if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"')
 
-  var ret;
-  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
-    // read it all, truncate the list
-    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
-    state.buffer.clear();
-  } else {
-    // read part of list
-    ret = fromListPartial(n, state.buffer, state.decoder);
-  }
+    prevOutType = btemplates.types.P2WSH
+    prevOutScript = btemplates.witnessScriptHash.output.encode(witnessScriptHash)
+    witness = p2wsh = true
+    signType = witnessType = expanded.scriptType
+    signScript = witnessScript
+  } else if (input.prevOutType) {
+    // embedded scripts are not possible without a redeemScript
+    if (input.prevOutType === scriptTypes.P2SH ||
+      input.prevOutType === scriptTypes.P2WSH) {
+      throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript')
+    }
 
-  return ret;
-}
+    prevOutType = input.prevOutType
+    prevOutScript = input.prevOutScript
+    expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey)
+    if (!expanded.pubKeys) return
 
-// Extracts only enough buffered data to satisfy the amount requested.
-// This function is designed to be inlinable, so please take care when making
-// changes to the function body.
-function fromListPartial(n, list, hasStrings) {
-  var ret;
-  if (n < list.head.data.length) {
-    // slice is the same for buffers and strings
-    ret = list.head.data.slice(0, n);
-    list.head.data = list.head.data.slice(n);
-  } else if (n === list.head.data.length) {
-    // first chunk is a perfect match
-    ret = list.shift();
+    witness = (input.prevOutType === scriptTypes.P2WPKH)
+    signType = prevOutType
+    signScript = prevOutScript
   } else {
-    // result spans more than one buffer
-    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
-  }
-  return ret;
-}
+    prevOutScript = btemplates.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey))
+    expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey)
 
-// Copies a specified amount of characters from the list of buffered data
-// chunks.
-// This function is designed to be inlinable, so please take care when making
-// changes to the function body.
-function copyFromBufferString(n, list) {
-  var p = list.head;
-  var c = 1;
-  var ret = p.data;
-  n -= ret.length;
-  while (p = p.next) {
-    var str = p.data;
-    var nb = n > str.length ? str.length : n;
-    if (nb === str.length) ret += str;else ret += str.slice(0, n);
-    n -= nb;
-    if (n === 0) {
-      if (nb === str.length) {
-        ++c;
-        if (p.next) list.head = p.next;else list.head = list.tail = null;
-      } else {
-        list.head = p;
-        p.data = str.slice(nb);
-      }
-      break;
-    }
-    ++c;
+    prevOutType = scriptTypes.P2PKH
+    witness = false
+    signType = prevOutType
+    signScript = prevOutScript
   }
-  list.length -= c;
-  return ret;
+
+  if (signType === scriptTypes.P2WPKH) {
+    signScript = btemplates.pubKeyHash.output.encode(btemplates.witnessPubKeyHash.output.decode(signScript))
+  }
+
+  if (p2sh) {
+    input.redeemScript = redeemScript
+    input.redeemScriptType = p2shType
+  }
+
+  if (p2wsh) {
+    input.witnessScript = witnessScript
+    input.witnessScriptType = witnessType
+  }
+
+  input.pubKeys = expanded.pubKeys
+  input.signatures = expanded.signatures
+  input.signScript = signScript
+  input.signType = signType
+  input.prevOutScript = prevOutScript
+  input.prevOutType = prevOutType
+  input.witness = witness
 }
 
-// Copies a specified amount of bytes from the list of buffered data chunks.
-// This function is designed to be inlinable, so please take care when making
-// changes to the function body.
-function copyFromBuffer(n, list) {
-  var ret = Buffer.allocUnsafe(n);
-  var p = list.head;
-  var c = 1;
-  p.data.copy(ret);
-  n -= p.data.length;
-  while (p = p.next) {
-    var buf = p.data;
-    var nb = n > buf.length ? buf.length : n;
-    buf.copy(ret, ret.length - n, 0, nb);
-    n -= nb;
-    if (n === 0) {
-      if (nb === buf.length) {
-        ++c;
-        if (p.next) list.head = p.next;else list.head = list.tail = null;
-      } else {
-        list.head = p;
-        p.data = buf.slice(nb);
+function buildStack (type, signatures, pubKeys, allowIncomplete) {
+  if (type === scriptTypes.P2PKH) {
+    if (signatures.length === 1 && Buffer.isBuffer(signatures[0]) && pubKeys.length === 1) return btemplates.pubKeyHash.input.encodeStack(signatures[0], pubKeys[0])
+  } else if (type === scriptTypes.P2PK) {
+    if (signatures.length === 1 && Buffer.isBuffer(signatures[0])) return btemplates.pubKey.input.encodeStack(signatures[0])
+  } else if (type === scriptTypes.MULTISIG) {
+    if (signatures.length > 0) {
+      signatures = signatures.map(function (signature) {
+        return signature || ops.OP_0
+      })
+      if (!allowIncomplete) {
+        // remove blank signatures
+        signatures = signatures.filter(function (x) { return x !== ops.OP_0 })
       }
-      break;
+
+      return btemplates.multisig.input.encodeStack(signatures)
     }
-    ++c;
+  } else {
+    throw new Error('Not yet supported')
   }
-  list.length -= c;
-  return ret;
+
+  if (!allowIncomplete) throw new Error('Not enough signatures provided')
+  return []
 }
 
-function endReadable(stream) {
-  var state = stream._readableState;
+function buildInput (input, allowIncomplete) {
+  var scriptType = input.prevOutType
+  var sig = []
+  var witness = []
 
-  // If we get here before consuming all the bytes, then that is a
-  // bug in node.  Should never happen.
-  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
+  if (supportedType(scriptType)) {
+    sig = buildStack(scriptType, input.signatures, input.pubKeys, allowIncomplete)
+  }
 
-  if (!state.endEmitted) {
-    state.ended = true;
-    processNextTick(endReadableNT, state, stream);
+  var p2sh = false
+  if (scriptType === btemplates.types.P2SH) {
+    // We can remove this error later when we have a guarantee prepareInput
+    // rejects unsignable scripts - it MUST be signable at this point.
+    if (!allowIncomplete && !supportedP2SHType(input.redeemScriptType)) {
+      throw new Error('Impossible to sign this type')
+    }
+
+    if (supportedType(input.redeemScriptType)) {
+      sig = buildStack(input.redeemScriptType, input.signatures, input.pubKeys, allowIncomplete)
+    }
+
+    // If it wasn't SIGNABLE, it's witness, defer to that
+    if (input.redeemScriptType) {
+      p2sh = true
+      scriptType = input.redeemScriptType
+    }
   }
-}
 
-function endReadableNT(state, stream) {
-  // Check that we didn't get one last unshift.
-  if (!state.endEmitted && state.length === 0) {
-    state.endEmitted = true;
-    stream.readable = false;
-    stream.emit('end');
+  switch (scriptType) {
+    // P2WPKH is a special case of P2PKH
+    case btemplates.types.P2WPKH:
+      witness = buildStack(btemplates.types.P2PKH, input.signatures, input.pubKeys, allowIncomplete)
+      break
+
+    case btemplates.types.P2WSH:
+      // We can remove this check later
+      if (!allowIncomplete && !supportedType(input.witnessScriptType)) {
+        throw new Error('Impossible to sign this type')
+      }
+
+      if (supportedType(input.witnessScriptType)) {
+        witness = buildStack(input.witnessScriptType, input.signatures, input.pubKeys, allowIncomplete)
+        witness.push(input.witnessScript)
+        scriptType = input.witnessScriptType
+      }
+
+      break
   }
-}
 
-function forEach(xs, f) {
-  for (var i = 0, l = xs.length; i < l; i++) {
-    f(xs[i], i);
+  // append redeemScript if necessary
+  if (p2sh) {
+    sig.push(input.redeemScript)
   }
-}
 
-function indexOf(xs, x) {
-  for (var i = 0, l = xs.length; i < l; i++) {
-    if (xs[i] === x) return i;
+  return {
+    type: scriptType,
+    script: bscript.compile(sig),
+    witness: witness
   }
-  return -1;
 }
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./_stream_duplex":14,"./internal/streams/BufferList":19,"./internal/streams/destroy":20,"./internal/streams/stream":21,"_process":12,"core-util-is":5,"events":6,"inherits":8,"isarray":10,"process-nextick-args":11,"safe-buffer":26,"string_decoder/":28,"util":3}],17:[function(require,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-// a transform stream is a readable/writable stream where you do
-// something with the data.  Sometimes it's called a "filter",
-// but that's not a great name for it, since that implies a thing where
-// some bits pass through, and others are simply ignored.  (That would
-// be a valid example of a transform, of course.)
-//
-// While the output is causally related to the input, it's not a
-// necessarily symmetric or synchronous transformation.  For example,
-// a zlib stream might take multiple plain-text writes(), and then
-// emit a single compressed chunk some time in the future.
-//
-// Here's how this works:
-//
-// The Transform stream has all the aspects of the readable and writable
-// stream classes.  When you write(chunk), that calls _write(chunk,cb)
-// internally, and returns false if there's a lot of pending writes
-// buffered up.  When you call read(), that calls _read(n) until
-// there's enough pending readable data buffered up.
-//
-// In a transform stream, the written data is placed in a buffer.  When
-// _read(n) is called, it transforms the queued up data, calling the
-// buffered _write cb's as it consumes chunks.  If consuming a single
-// written chunk would result in multiple output chunks, then the first
-// outputted bit calls the readcb, and subsequent chunks just go into
-// the read buffer, and will cause it to emit 'readable' if necessary.
-//
-// This way, back-pressure is actually determined by the reading side,
-// since _read has to be called to start processing a new chunk.  However,
-// a pathological inflate type of transform can cause excessive buffering
-// here.  For example, imagine a stream where every byte of input is
-// interpreted as an integer from 0-255, and then results in that many
-// bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
-// 1kb of data being output.  In this case, you could write a very small
-// amount of input, and end up with a very large amount of output.  In
-// such a pathological inflating mechanism, there'd be no way to tell
-// the system to stop doing the transform.  A single 4MB write could
-// cause the system to run out of memory.
-//
-// However, even in such a pathological case, only a single written chunk
-// would be consumed, and then the rest would wait (un-transformed) until
-// the results of the previous transformed chunk were consumed.
 
-'use strict';
+function TransactionBuilder (network, maximumFeeRate) {
+  this.prevTxMap = {}
+  this.network = network || networks.bitcoin
 
-module.exports = Transform;
+  // WARNING: This is __NOT__ to be relied on, its just another potential safety mechanism (safety in-depth)
+  this.maximumFeeRate = maximumFeeRate || 1000
 
-var Duplex = require('./_stream_duplex');
+  this.inputs = []
+  this.tx = new Transaction()
+}
 
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
+TransactionBuilder.prototype.setLockTime = function (locktime) {
+  typeforce(types.UInt32, locktime)
 
-util.inherits(Transform, Duplex);
+  // if any signatures exist, throw
+  if (this.inputs.some(function (input) {
+    if (!input.signatures) return false
 
-function TransformState(stream) {
-  this.afterTransform = function (er, data) {
-    return afterTransform(stream, er, data);
-  };
+    return input.signatures.some(function (s) { return s })
+  })) {
+    throw new Error('No, this would invalidate signatures')
+  }
 
-  this.needTransform = false;
-  this.transforming = false;
-  this.writecb = null;
-  this.writechunk = null;
-  this.writeencoding = null;
+  this.tx.locktime = locktime
 }
 
-function afterTransform(stream, er, data) {
-  var ts = stream._transformState;
-  ts.transforming = false;
+TransactionBuilder.prototype.setVersion = function (version) {
+  typeforce(types.UInt32, version)
 
-  var cb = ts.writecb;
+  // XXX: this might eventually become more complex depending on what the versions represent
+  this.tx.version = version
+}
 
-  if (!cb) {
-    return stream.emit('error', new Error('write callback called multiple times'));
-  }
+TransactionBuilder.fromTransaction = function (transaction, network) {
+  var txb = new TransactionBuilder(network)
 
-  ts.writechunk = null;
-  ts.writecb = null;
+  // Copy transaction fields
+  txb.setVersion(transaction.version)
+  txb.setLockTime(transaction.locktime)
 
-  if (data !== null && data !== undefined) stream.push(data);
+  // Copy outputs (done first to avoid signature invalidation)
+  transaction.outs.forEach(function (txOut) {
+    txb.addOutput(txOut.script, txOut.value)
+  })
 
-  cb(er);
+  // Copy inputs
+  transaction.ins.forEach(function (txIn) {
+    txb.__addInputUnsafe(txIn.hash, txIn.index, {
+      sequence: txIn.sequence,
+      script: txIn.script,
+      witness: txIn.witness
+    })
+  })
 
-  var rs = stream._readableState;
-  rs.reading = false;
-  if (rs.needReadable || rs.length < rs.highWaterMark) {
-    stream._read(rs.highWaterMark);
-  }
-}
+  // fix some things not possible through the public API
+  txb.inputs.forEach(function (input, i) {
+    fixMultisigOrder(input, transaction, i)
+  })
 
-function Transform(options) {
-  if (!(this instanceof Transform)) return new Transform(options);
+  return txb
+}
 
-  Duplex.call(this, options);
+TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) {
+  if (!this.__canModifyInputs()) {
+    throw new Error('No, this would invalidate signatures')
+  }
 
-  this._transformState = new TransformState(this);
+  var value
 
-  var stream = this;
+  // is it a hex string?
+  if (typeof txHash === 'string') {
+    // transaction hashs's are displayed in reverse order, un-reverse it
+    txHash = Buffer.from(txHash, 'hex').reverse()
 
-  // start out asking for a readable event once data is transformed.
-  this._readableState.needReadable = true;
+  // is it a Transaction object?
+  } else if (txHash instanceof Transaction) {
+    var txOut = txHash.outs[vout]
+    prevOutScript = txOut.script
+    value = txOut.value
 
-  // we have implemented the _read method, and done the other things
-  // that Readable wants before the first _read call, so unset the
-  // sync guard flag.
-  this._readableState.sync = false;
+    txHash = txHash.getHash()
+  }
 
-  if (options) {
-    if (typeof options.transform === 'function') this._transform = options.transform;
+  return this.__addInputUnsafe(txHash, vout, {
+    sequence: sequence,
+    prevOutScript: prevOutScript,
+    value: value
+  })
+}
 
-    if (typeof options.flush === 'function') this._flush = options.flush;
+TransactionBuilder.prototype.__addInputUnsafe = function (txHash, vout, options) {
+  if (Transaction.isCoinbaseHash(txHash)) {
+    throw new Error('coinbase inputs not supported')
   }
 
-  // When the writable side finishes, then flush out anything remaining.
-  this.once('prefinish', function () {
-    if (typeof this._flush === 'function') this._flush(function (er, data) {
-      done(stream, er, data);
-    });else done(stream);
-  });
-}
+  var prevTxOut = txHash.toString('hex') + ':' + vout
+  if (this.prevTxMap[prevTxOut] !== undefined) throw new Error('Duplicate TxOut: ' + prevTxOut)
 
-Transform.prototype.push = function (chunk, encoding) {
-  this._transformState.needTransform = false;
-  return Duplex.prototype.push.call(this, chunk, encoding);
-};
+  var input = {}
 
-// This is the part where you do stuff!
-// override this function in implementation classes.
-// 'chunk' is an input chunk.
-//
-// Call `push(newChunk)` to pass along transformed output
-// to the readable side.  You may call 'push' zero or more times.
-//
-// Call `cb(err)` when you are done with this chunk.  If you pass
-// an error, then that'll put the hurt on the whole operation.  If you
-// never call cb(), then you'll never get another chunk.
-Transform.prototype._transform = function (chunk, encoding, cb) {
-  throw new Error('_transform() is not implemented');
-};
+  // derive what we can from the scriptSig
+  if (options.script !== undefined) {
+    input = expandInput(options.script, options.witness || [])
+  }
 
-Transform.prototype._write = function (chunk, encoding, cb) {
-  var ts = this._transformState;
-  ts.writecb = cb;
-  ts.writechunk = chunk;
-  ts.writeencoding = encoding;
-  if (!ts.transforming) {
-    var rs = this._readableState;
-    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
+  // if an input value was given, retain it
+  if (options.value !== undefined) {
+    input.value = options.value
   }
-};
 
-// Doesn't matter what the args are here.
-// _transform does all the work.
-// That we got here means that the readable side wants more data.
-Transform.prototype._read = function (n) {
-  var ts = this._transformState;
+  // derive what we can from the previous transactions output script
+  if (!input.prevOutScript && options.prevOutScript) {
+    var prevOutType
 
-  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
-    ts.transforming = true;
-    this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
-  } else {
-    // mark that we need a transform, so that any data that comes in
-    // will get processed, now that we've asked for it.
-    ts.needTransform = true;
-  }
-};
+    if (!input.pubKeys && !input.signatures) {
+      var expanded = expandOutput(options.prevOutScript)
 
-Transform.prototype._destroy = function (err, cb) {
-  var _this = this;
+      if (expanded.pubKeys) {
+        input.pubKeys = expanded.pubKeys
+        input.signatures = expanded.signatures
+      }
 
-  Duplex.prototype._destroy.call(this, err, function (err2) {
-    cb(err2);
-    _this.emit('close');
-  });
-};
+      prevOutType = expanded.scriptType
+    }
 
-function done(stream, er, data) {
-  if (er) return stream.emit('error', er);
+    input.prevOutScript = options.prevOutScript
+    input.prevOutType = prevOutType || btemplates.classifyOutput(options.prevOutScript)
+  }
 
-  if (data !== null && data !== undefined) stream.push(data);
+  var vin = this.tx.addInput(txHash, vout, options.sequence, options.scriptSig)
+  this.inputs[vin] = input
+  this.prevTxMap[prevTxOut] = vin
+  return vin
+}
 
-  // if there's nothing in the write buffer, then that means
-  // that nothing more will ever be provided
-  var ws = stream._writableState;
-  var ts = stream._transformState;
+TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) {
+  if (!this.__canModifyOutputs()) {
+    throw new Error('No, this would invalidate signatures')
+  }
 
-  if (ws.length) throw new Error('Calling transform done when ws.length != 0');
+  // Attempt to get a script if it's a base58 address string
+  if (typeof scriptPubKey === 'string') {
+    scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network)
+  }
 
-  if (ts.transforming) throw new Error('Calling transform done when still transforming');
+  return this.tx.addOutput(scriptPubKey, value)
+}
 
-  return stream.push(null);
+TransactionBuilder.prototype.build = function () {
+  return this.__build(false)
+}
+TransactionBuilder.prototype.buildIncomplete = function () {
+  return this.__build(true)
 }
-},{"./_stream_duplex":14,"core-util-is":5,"inherits":8}],18:[function(require,module,exports){
-(function (process,global){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-// A bit simpler than readable streams.
-// Implement an async ._write(chunk, encoding, cb), and it'll handle all
-// the drain event emission and buffering.
+TransactionBuilder.prototype.__build = function (allowIncomplete) {
+  if (!allowIncomplete) {
+    if (!this.tx.ins.length) throw new Error('Transaction has no inputs')
+    if (!this.tx.outs.length) throw new Error('Transaction has no outputs')
+  }
 
-'use strict';
+  var tx = this.tx.clone()
+  // Create script signatures from inputs
+  this.inputs.forEach(function (input, i) {
+    var scriptType = input.witnessScriptType || input.redeemScriptType || input.prevOutType
+    if (!scriptType && !allowIncomplete) throw new Error('Transaction is not complete')
+    var result = buildInput(input, allowIncomplete)
 
-/*<replacement>*/
+    // skip if no result
+    if (!allowIncomplete) {
+      if (!supportedType(result.type) && result.type !== btemplates.types.P2WPKH) {
+        throw new Error(result.type + ' not supported')
+      }
+    }
 
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
+    tx.setInputScript(i, result.script)
+    tx.setWitness(i, result.witness)
+  })
 
-module.exports = Writable;
+  if (!allowIncomplete) {
+    // do not rely on this, its merely a last resort
+    if (this.__overMaximumFees(tx.virtualSize())) {
+      throw new Error('Transaction has absurd fees')
+    }
+  }
 
-/* <replacement> */
-function WriteReq(chunk, encoding, cb) {
-  this.chunk = chunk;
-  this.encoding = encoding;
-  this.callback = cb;
-  this.next = null;
+  return tx
 }
 
-// It seems a linked list but it is not
-// there will be only 2 of these for each stream
-function CorkedRequest(state) {
-  var _this = this;
-
-  this.next = null;
-  this.entry = null;
-  this.finish = function () {
-    onCorkedFinish(_this, state);
-  };
+function canSign (input) {
+  return input.prevOutScript !== undefined &&
+    input.signScript !== undefined &&
+    input.pubKeys !== undefined &&
+    input.signatures !== undefined &&
+    input.signatures.length === input.pubKeys.length &&
+    input.pubKeys.length > 0 &&
+    (
+      input.witness === false ||
+      (input.witness === true && input.value !== undefined)
+    )
 }
-/* </replacement> */
 
-/*<replacement>*/
-var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
-/*</replacement>*/
+TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashType, witnessValue, witnessScript) {
+  // TODO: remove keyPair.network matching in 4.0.0
+  if (keyPair.network && keyPair.network !== this.network) throw new TypeError('Inconsistent network')
+  if (!this.inputs[vin]) throw new Error('No input at index: ' + vin)
+  hashType = hashType || Transaction.SIGHASH_ALL
 
-/*<replacement>*/
-var Duplex;
-/*</replacement>*/
+  var input = this.inputs[vin]
 
-Writable.WritableState = WritableState;
+  // if redeemScript was previously provided, enforce consistency
+  if (input.redeemScript !== undefined &&
+      redeemScript &&
+      !input.redeemScript.equals(redeemScript)) {
+    throw new Error('Inconsistent redeemScript')
+  }
 
-/*<replacement>*/
-var util = require('core-util-is');
-util.inherits = require('inherits');
-/*</replacement>*/
+  var kpPubKey = keyPair.publicKey || keyPair.getPublicKeyBuffer()
+  if (!canSign(input)) {
+    if (witnessValue !== undefined) {
+      if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue')
+      typeforce(types.Satoshi, witnessValue)
+      input.value = witnessValue
+    }
+
+    if (!canSign(input)) prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript)
+    if (!canSign(input)) throw Error(input.prevOutType + ' not supported')
+  }
+
+  // ready to sign
+  var signatureHash
+  if (input.witness) {
+    signatureHash = this.tx.hashForWitnessV0(vin, input.signScript, input.value, hashType)
+  } else {
+    signatureHash = this.tx.hashForSignature(vin, input.signScript, hashType)
+  }
 
-/*<replacement>*/
-var internalUtil = {
-  deprecate: require('util-deprecate')
-};
-/*</replacement>*/
+  // enforce in order signing of public keys
+  var signed = input.pubKeys.some(function (pubKey, i) {
+    if (!kpPubKey.equals(pubKey)) return false
+    if (input.signatures[i]) throw new Error('Signature already exists')
+    if (kpPubKey.length !== 33 &&
+      input.signType === scriptTypes.P2WPKH) throw new Error('BIP143 rejects uncompressed public keys in P2WPKH or P2WSH')
 
-/*<replacement>*/
-var Stream = require('./internal/streams/stream');
-/*</replacement>*/
+    var signature = keyPair.sign(signatureHash)
+    if (Buffer.isBuffer(signature)) signature = ECSignature.fromRSBuffer(signature)
 
-/*<replacement>*/
-var Buffer = require('safe-buffer').Buffer;
-var OurUint8Array = global.Uint8Array || function () {};
-function _uint8ArrayToBuffer(chunk) {
-  return Buffer.from(chunk);
+    input.signatures[i] = signature.toScriptSignature(hashType)
+    return true
+  })
+
+  if (!signed) throw new Error('Key pair cannot sign for this input')
 }
-function _isUint8Array(obj) {
-  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
+
+function signatureHashType (buffer) {
+  return buffer.readUInt8(buffer.length - 1)
 }
-/*</replacement>*/
 
-var destroyImpl = require('./internal/streams/destroy');
+TransactionBuilder.prototype.__canModifyInputs = function () {
+  return this.inputs.every(function (input) {
+    // any signatures?
+    if (input.signatures === undefined) return true
 
-util.inherits(Writable, Stream);
+    return input.signatures.every(function (signature) {
+      if (!signature) return true
+      var hashType = signatureHashType(signature)
 
-function nop() {}
+      // if SIGHASH_ANYONECANPAY is set, signatures would not
+      // be invalidated by more inputs
+      return hashType & Transaction.SIGHASH_ANYONECANPAY
+    })
+  })
+}
 
-function WritableState(options, stream) {
-  Duplex = Duplex || require('./_stream_duplex');
+TransactionBuilder.prototype.__canModifyOutputs = function () {
+  var nInputs = this.tx.ins.length
+  var nOutputs = this.tx.outs.length
 
-  options = options || {};
+  return this.inputs.every(function (input) {
+    if (input.signatures === undefined) return true
 
-  // object stream flag to indicate whether or not this stream
-  // contains buffers or objects.
-  this.objectMode = !!options.objectMode;
+    return input.signatures.every(function (signature) {
+      if (!signature) return true
+      var hashType = signatureHashType(signature)
 
-  if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
+      var hashTypeMod = hashType & 0x1f
+      if (hashTypeMod === Transaction.SIGHASH_NONE) return true
+      if (hashTypeMod === Transaction.SIGHASH_SINGLE) {
+        // if SIGHASH_SINGLE is set, and nInputs > nOutputs
+        // some signatures would be invalidated by the addition
+        // of more outputs
+        return nInputs <= nOutputs
+      }
+    })
+  })
+}
 
-  // the point at which write() starts returning false
-  // Note: 0 is a valid value, means that we always return false if
-  // the entire buffer is not flushed immediately on write()
-  var hwm = options.highWaterMark;
-  var defaultHwm = this.objectMode ? 16 : 16 * 1024;
-  this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
+TransactionBuilder.prototype.__overMaximumFees = function (bytes) {
+  // not all inputs will have .value defined
+  var incoming = this.inputs.reduce(function (a, x) { return a + (x.value >>> 0) }, 0)
 
-  // cast to ints.
-  this.highWaterMark = Math.floor(this.highWaterMark);
+  // but all outputs do, and if we have any input value
+  // we can immediately determine if the outputs are too small
+  var outgoing = this.tx.outs.reduce(function (a, x) { return a + x.value }, 0)
+  var fee = incoming - outgoing
+  var feeRate = fee / bytes
 
-  // if _final has been called
-  this.finalCalled = false;
+  return feeRate > this.maximumFeeRate
+}
 
-  // drain event flag.
-  this.needDrain = false;
-  // at the start of calling end()
-  this.ending = false;
-  // when end() has been called, and returned
-  this.ended = false;
-  // when 'finish' is emitted
-  this.finished = false;
+module.exports = TransactionBuilder
 
-  // has it been destroyed
-  this.destroyed = false;
+},{"./address":44,"./crypto":47,"./ecpair":49,"./ecsignature":50,"./networks":53,"./script":54,"./templates":56,"./transaction":78,"./types":80,"bitcoin-ops":42,"safe-buffer":128,"typeforce":139}],80:[function(require,module,exports){
+var typeforce = require('typeforce')
 
-  // should we decode strings into buffers before passing to _write?
-  // this is here so that some node-core streams can optimize string
-  // handling at a lower level.
-  var noDecode = options.decodeStrings === false;
-  this.decodeStrings = !noDecode;
+var UINT31_MAX = Math.pow(2, 31) - 1
+function UInt31 (value) {
+  return typeforce.UInt32(value) && value <= UINT31_MAX
+}
 
-  // Crypto is kind of old and crusty.  Historically, its default string
-  // encoding is 'binary' so we have to make this configurable.
-  // Everything else in the universe uses 'utf8', though.
-  this.defaultEncoding = options.defaultEncoding || 'utf8';
+function BIP32Path (value) {
+  return typeforce.String(value) && value.match(/^(m\/)?(\d+'?\/)*\d+'?$/)
+}
+BIP32Path.toJSON = function () { return 'BIP32 derivation path' }
 
-  // not an actual buffer we keep track of, but a measurement
-  // of how much we're waiting to get pushed to some underlying
-  // socket or file.
-  this.length = 0;
+var SATOSHI_MAX = 21 * 1e14
+function Satoshi (value) {
+  return typeforce.UInt53(value) && value <= SATOSHI_MAX
+}
 
-  // a flag to see when we're in the middle of a write.
-  this.writing = false;
+// external dependent types
+var BigInt = typeforce.quacksLike('BigInteger')
+var ECPoint = typeforce.quacksLike('Point')
 
-  // when true all writes will be buffered until .uncork() call
-  this.corked = 0;
+// exposed, external API
+var ECSignature = typeforce.compile({ r: BigInt, s: BigInt })
+var Network = typeforce.compile({
+  messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String),
+  bip32: {
+    public: typeforce.UInt32,
+    private: typeforce.UInt32
+  },
+  pubKeyHash: typeforce.UInt8,
+  scriptHash: typeforce.UInt8,
+  wif: typeforce.UInt8
+})
 
-  // a flag to be able to tell if the onwrite cb is called immediately,
-  // or on a later tick.  We set this to true at first, because any
-  // actions that shouldn't happen until "later" should generally also
-  // not happen before the first write call.
-  this.sync = true;
+// extend typeforce types with ours
+var types = {
+  BigInt: BigInt,
+  BIP32Path: BIP32Path,
+  Buffer256bit: typeforce.BufferN(32),
+  ECPoint: ECPoint,
+  ECSignature: ECSignature,
+  Hash160bit: typeforce.BufferN(20),
+  Hash256bit: typeforce.BufferN(32),
+  Network: Network,
+  Satoshi: Satoshi,
+  UInt31: UInt31
+}
 
-  // a flag to know if we're processing previously buffered items, which
-  // may call the _write() callback in the same tick, so that we don't
-  // end up in an overlapped onwrite situation.
-  this.bufferProcessing = false;
+for (var typeName in typeforce) {
+  types[typeName] = typeforce[typeName]
+}
 
-  // the callback that's passed to _write(chunk,cb)
-  this.onwrite = function (er) {
-    onwrite(stream, er);
-  };
+module.exports = types
 
-  // the callback that the user supplies to write(chunk,encoding,cb)
-  this.writecb = null;
+},{"typeforce":139}],81:[function(require,module,exports){
+(function (module, exports) {
+  'use strict';
 
-  // the amount that is being written when _write is called.
-  this.writelen = 0;
+  // Utils
+  function assert (val, msg) {
+    if (!val) throw new Error(msg || 'Assertion failed');
+  }
 
-  this.bufferedRequest = null;
-  this.lastBufferedRequest = null;
+  // Could use `inherits` module, but don't want to move from single file
+  // architecture yet.
+  function inherits (ctor, superCtor) {
+    ctor.super_ = superCtor;
+    var TempCtor = function () {};
+    TempCtor.prototype = superCtor.prototype;
+    ctor.prototype = new TempCtor();
+    ctor.prototype.constructor = ctor;
+  }
 
-  // number of pending user-supplied write callbacks
-  // this must be 0 before 'finish' can be emitted
-  this.pendingcb = 0;
+  // BN
 
-  // emit prefinish if the only thing we're waiting for is _write cbs
-  // This is relevant for synchronous Transform streams
-  this.prefinished = false;
+  function BN (number, base, endian) {
+    if (BN.isBN(number)) {
+      return number;
+    }
 
-  // True if the error was already emitted and should not be thrown again
-  this.errorEmitted = false;
+    this.negative = 0;
+    this.words = null;
+    this.length = 0;
 
-  // count buffered requests
-  this.bufferedRequestCount = 0;
+    // Reduction context
+    this.red = null;
 
-  // allocate the first CorkedRequest, there is always
-  // one allocated and free to use, and we maintain at most two
-  this.corkedRequestsFree = new CorkedRequest(this);
-}
+    if (number !== null) {
+      if (base === 'le' || base === 'be') {
+        endian = base;
+        base = 10;
+      }
 
-WritableState.prototype.getBuffer = function getBuffer() {
-  var current = this.bufferedRequest;
-  var out = [];
-  while (current) {
-    out.push(current);
-    current = current.next;
+      this._init(number || 0, base || 10, endian || 'be');
+    }
+  }
+  if (typeof module === 'object') {
+    module.exports = BN;
+  } else {
+    exports.BN = BN;
   }
-  return out;
-};
 
-(function () {
-  try {
-    Object.defineProperty(WritableState.prototype, 'buffer', {
-      get: internalUtil.deprecate(function () {
-        return this.getBuffer();
-      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
-    });
-  } catch (_) {}
-})();
+  BN.BN = BN;
+  BN.wordSize = 26;
 
-// Test _writableState for inheritance to account for Duplex streams,
-// whose prototype chain only points to Readable.
-var realHasInstance;
-if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
-  realHasInstance = Function.prototype[Symbol.hasInstance];
-  Object.defineProperty(Writable, Symbol.hasInstance, {
-    value: function (object) {
-      if (realHasInstance.call(this, object)) return true;
+  var Buffer;
+  try {
+    Buffer = require('buf' + 'fer').Buffer;
+  } catch (e) {
+  }
 
-      return object && object._writableState instanceof WritableState;
+  BN.isBN = function isBN (num) {
+    if (num instanceof BN) {
+      return true;
     }
-  });
-} else {
-  realHasInstance = function (object) {
-    return object instanceof this;
-  };
-}
 
-function Writable(options) {
-  Duplex = Duplex || require('./_stream_duplex');
+    return num !== null && typeof num === 'object' &&
+      num.constructor.wordSize === BN.wordSize && Array.isArray(num.words);
+  };
 
-  // Writable ctor is applied to Duplexes, too.
-  // `realHasInstance` is necessary because using plain `instanceof`
-  // would return false, as no `_writableState` property is attached.
+  BN.max = function max (left, right) {
+    if (left.cmp(right) > 0) return left;
+    return right;
+  };
 
-  // Trying to use the custom `instanceof` for Writable here will also break the
-  // Node.js LazyTransform implementation, which has a non-trivial getter for
-  // `_writableState` that would lead to infinite recursion.
-  if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {
-    return new Writable(options);
-  }
+  BN.min = function min (left, right) {
+    if (left.cmp(right) < 0) return left;
+    return right;
+  };
 
-  this._writableState = new WritableState(options, this);
+  BN.prototype._init = function init (number, base, endian) {
+    if (typeof number === 'number') {
+      return this._initNumber(number, base, endian);
+    }
 
-  // legacy.
-  this.writable = true;
+    if (typeof number === 'object') {
+      return this._initArray(number, base, endian);
+    }
 
-  if (options) {
-    if (typeof options.write === 'function') this._write = options.write;
+    if (base === 'hex') {
+      base = 16;
+    }
+    assert(base === (base | 0) && base >= 2 && base <= 36);
 
-    if (typeof options.writev === 'function') this._writev = options.writev;
+    number = number.toString().replace(/\s+/g, '');
+    var start = 0;
+    if (number[0] === '-') {
+      start++;
+    }
 
-    if (typeof options.destroy === 'function') this._destroy = options.destroy;
+    if (base === 16) {
+      this._parseHex(number, start);
+    } else {
+      this._parseBase(number, base, start);
+    }
 
-    if (typeof options.final === 'function') this._final = options.final;
-  }
+    if (number[0] === '-') {
+      this.negative = 1;
+    }
 
-  Stream.call(this);
-}
+    this.strip();
 
-// Otherwise people can pipe Writable streams, which is just wrong.
-Writable.prototype.pipe = function () {
-  this.emit('error', new Error('Cannot pipe, not readable'));
-};
+    if (endian !== 'le') return;
 
-function writeAfterEnd(stream, cb) {
-  var er = new Error('write after end');
-  // TODO: defer error events consistently everywhere, not just the cb
-  stream.emit('error', er);
-  processNextTick(cb, er);
-}
+    this._initArray(this.toArray(), base, endian);
+  };
 
-// Checks that a user-supplied chunk is valid, especially for the particular
-// mode the stream is in. Currently this means that `null` is never accepted
-// and undefined/non-string values are only allowed in object mode.
-function validChunk(stream, state, chunk, cb) {
-  var valid = true;
-  var er = false;
+  BN.prototype._initNumber = function _initNumber (number, base, endian) {
+    if (number < 0) {
+      this.negative = 1;
+      number = -number;
+    }
+    if (number < 0x4000000) {
+      this.words = [ number & 0x3ffffff ];
+      this.length = 1;
+    } else if (number < 0x10000000000000) {
+      this.words = [
+        number & 0x3ffffff,
+        (number / 0x4000000) & 0x3ffffff
+      ];
+      this.length = 2;
+    } else {
+      assert(number < 0x20000000000000); // 2 ^ 53 (unsafe)
+      this.words = [
+        number & 0x3ffffff,
+        (number / 0x4000000) & 0x3ffffff,
+        1
+      ];
+      this.length = 3;
+    }
 
-  if (chunk === null) {
-    er = new TypeError('May not write null values to stream');
-  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
-    er = new TypeError('Invalid non-string/buffer chunk');
-  }
-  if (er) {
-    stream.emit('error', er);
-    processNextTick(cb, er);
-    valid = false;
-  }
-  return valid;
-}
+    if (endian !== 'le') return;
 
-Writable.prototype.write = function (chunk, encoding, cb) {
-  var state = this._writableState;
-  var ret = false;
-  var isBuf = _isUint8Array(chunk) && !state.objectMode;
+    // Reverse the bytes
+    this._initArray(this.toArray(), base, endian);
+  };
 
-  if (isBuf && !Buffer.isBuffer(chunk)) {
-    chunk = _uint8ArrayToBuffer(chunk);
-  }
+  BN.prototype._initArray = function _initArray (number, base, endian) {
+    // Perhaps a Uint8Array
+    assert(typeof number.length === 'number');
+    if (number.length <= 0) {
+      this.words = [ 0 ];
+      this.length = 1;
+      return this;
+    }
 
-  if (typeof encoding === 'function') {
-    cb = encoding;
-    encoding = null;
-  }
+    this.length = Math.ceil(number.length / 3);
+    this.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      this.words[i] = 0;
+    }
 
-  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
+    var j, w;
+    var off = 0;
+    if (endian === 'be') {
+      for (i = number.length - 1, j = 0; i >= 0; i -= 3) {
+        w = number[i] | (number[i - 1] << 8) | (number[i - 2] << 16);
+        this.words[j] |= (w << off) & 0x3ffffff;
+        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+        off += 24;
+        if (off >= 26) {
+          off -= 26;
+          j++;
+        }
+      }
+    } else if (endian === 'le') {
+      for (i = 0, j = 0; i < number.length; i += 3) {
+        w = number[i] | (number[i + 1] << 8) | (number[i + 2] << 16);
+        this.words[j] |= (w << off) & 0x3ffffff;
+        this.words[j + 1] = (w >>> (26 - off)) & 0x3ffffff;
+        off += 24;
+        if (off >= 26) {
+          off -= 26;
+          j++;
+        }
+      }
+    }
+    return this.strip();
+  };
 
-  if (typeof cb !== 'function') cb = nop;
+  function parseHex (str, start, end) {
+    var r = 0;
+    var len = Math.min(str.length, end);
+    for (var i = start; i < len; i++) {
+      var c = str.charCodeAt(i) - 48;
 
-  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
-    state.pendingcb++;
-    ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);
-  }
+      r <<= 4;
 
-  return ret;
-};
+      // 'a' - 'f'
+      if (c >= 49 && c <= 54) {
+        r |= c - 49 + 0xa;
 
-Writable.prototype.cork = function () {
-  var state = this._writableState;
+      // 'A' - 'F'
+      } else if (c >= 17 && c <= 22) {
+        r |= c - 17 + 0xa;
 
-  state.corked++;
-};
+      // '0' - '9'
+      } else {
+        r |= c & 0xf;
+      }
+    }
+    return r;
+  }
 
-Writable.prototype.uncork = function () {
-  var state = this._writableState;
+  BN.prototype._parseHex = function _parseHex (number, start) {
+    // Create possibly bigger array to ensure that it fits the number
+    this.length = Math.ceil((number.length - start) / 6);
+    this.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      this.words[i] = 0;
+    }
 
-  if (state.corked) {
-    state.corked--;
+    var j, w;
+    // Scan 24-bit chunks and add them to the number
+    var off = 0;
+    for (i = number.length - 6, j = 0; i >= start; i -= 6) {
+      w = parseHex(number, i, i + 6);
+      this.words[j] |= (w << off) & 0x3ffffff;
+      // NOTE: `0x3fffff` is intentional here, 26bits max shift + 24bit hex limb
+      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+      off += 24;
+      if (off >= 26) {
+        off -= 26;
+        j++;
+      }
+    }
+    if (i + 6 !== start) {
+      w = parseHex(number, start, i + 6);
+      this.words[j] |= (w << off) & 0x3ffffff;
+      this.words[j + 1] |= w >>> (26 - off) & 0x3fffff;
+    }
+    this.strip();
+  };
 
-    if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
-  }
-};
+  function parseBase (str, start, end, mul) {
+    var r = 0;
+    var len = Math.min(str.length, end);
+    for (var i = start; i < len; i++) {
+      var c = str.charCodeAt(i) - 48;
 
-Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
-  // node::ParseEncoding() requires lower case.
-  if (typeof encoding === 'string') encoding = encoding.toLowerCase();
-  if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
-  this._writableState.defaultEncoding = encoding;
-  return this;
-};
+      r *= mul;
 
-function decodeChunk(state, chunk, encoding) {
-  if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
-    chunk = Buffer.from(chunk, encoding);
-  }
-  return chunk;
-}
+      // 'a'
+      if (c >= 49) {
+        r += c - 49 + 0xa;
 
-// if we're already writing something, then just put this
-// in the queue, and wait our turn.  Otherwise, call _write
-// If we return false, then we need a drain event, so set that flag.
-function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {
-  if (!isBuf) {
-    var newChunk = decodeChunk(state, chunk, encoding);
-    if (chunk !== newChunk) {
-      isBuf = true;
-      encoding = 'buffer';
-      chunk = newChunk;
+      // 'A'
+      } else if (c >= 17) {
+        r += c - 17 + 0xa;
+
+      // '0' - '9'
+      } else {
+        r += c;
+      }
     }
+    return r;
   }
-  var len = state.objectMode ? 1 : chunk.length;
 
-  state.length += len;
-
-  var ret = state.length < state.highWaterMark;
-  // we must ensure that previous needDrain will not be reset to false.
-  if (!ret) state.needDrain = true;
+  BN.prototype._parseBase = function _parseBase (number, base, start) {
+    // Initialize as zero
+    this.words = [ 0 ];
+    this.length = 1;
 
-  if (state.writing || state.corked) {
-    var last = state.lastBufferedRequest;
-    state.lastBufferedRequest = {
-      chunk: chunk,
-      encoding: encoding,
-      isBuf: isBuf,
-      callback: cb,
-      next: null
-    };
-    if (last) {
-      last.next = state.lastBufferedRequest;
-    } else {
-      state.bufferedRequest = state.lastBufferedRequest;
+    // Find length of limb in base
+    for (var limbLen = 0, limbPow = 1; limbPow <= 0x3ffffff; limbPow *= base) {
+      limbLen++;
     }
-    state.bufferedRequestCount += 1;
-  } else {
-    doWrite(stream, state, false, len, chunk, encoding, cb);
-  }
+    limbLen--;
+    limbPow = (limbPow / base) | 0;
 
-  return ret;
-}
+    var total = number.length - start;
+    var mod = total % limbLen;
+    var end = Math.min(total, total - mod) + start;
 
-function doWrite(stream, state, writev, len, chunk, encoding, cb) {
-  state.writelen = len;
-  state.writecb = cb;
-  state.writing = true;
-  state.sync = true;
-  if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
-  state.sync = false;
-}
+    var word = 0;
+    for (var i = start; i < end; i += limbLen) {
+      word = parseBase(number, i, i + limbLen, base);
 
-function onwriteError(stream, state, sync, er, cb) {
-  --state.pendingcb;
+      this.imuln(limbPow);
+      if (this.words[0] + word < 0x4000000) {
+        this.words[0] += word;
+      } else {
+        this._iaddn(word);
+      }
+    }
 
-  if (sync) {
-    // defer the callback if we are being called synchronously
-    // to avoid piling up things on the stack
-    processNextTick(cb, er);
-    // this can emit finish, and it will always happen
-    // after error
-    processNextTick(finishMaybe, stream, state);
-    stream._writableState.errorEmitted = true;
-    stream.emit('error', er);
-  } else {
-    // the caller expect this to happen before if
-    // it is async
-    cb(er);
-    stream._writableState.errorEmitted = true;
-    stream.emit('error', er);
-    // this can emit finish, but finish must
-    // always follow error
-    finishMaybe(stream, state);
-  }
-}
+    if (mod !== 0) {
+      var pow = 1;
+      word = parseBase(number, i, number.length, base);
 
-function onwriteStateUpdate(state) {
-  state.writing = false;
-  state.writecb = null;
-  state.length -= state.writelen;
-  state.writelen = 0;
-}
+      for (i = 0; i < mod; i++) {
+        pow *= base;
+      }
 
-function onwrite(stream, er) {
-  var state = stream._writableState;
-  var sync = state.sync;
-  var cb = state.writecb;
+      this.imuln(pow);
+      if (this.words[0] + word < 0x4000000) {
+        this.words[0] += word;
+      } else {
+        this._iaddn(word);
+      }
+    }
+  };
 
-  onwriteStateUpdate(state);
+  BN.prototype.copy = function copy (dest) {
+    dest.words = new Array(this.length);
+    for (var i = 0; i < this.length; i++) {
+      dest.words[i] = this.words[i];
+    }
+    dest.length = this.length;
+    dest.negative = this.negative;
+    dest.red = this.red;
+  };
 
-  if (er) onwriteError(stream, state, sync, er, cb);else {
-    // Check if we're actually ready to finish, but don't emit yet
-    var finished = needFinish(state);
+  BN.prototype.clone = function clone () {
+    var r = new BN(null);
+    this.copy(r);
+    return r;
+  };
 
-    if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
-      clearBuffer(stream, state);
+  BN.prototype._expand = function _expand (size) {
+    while (this.length < size) {
+      this.words[this.length++] = 0;
     }
+    return this;
+  };
 
-    if (sync) {
-      /*<replacement>*/
-      asyncWrite(afterWrite, stream, state, finished, cb);
-      /*</replacement>*/
-    } else {
-      afterWrite(stream, state, finished, cb);
+  // Remove leading `0` from `this`
+  BN.prototype.strip = function strip () {
+    while (this.length > 1 && this.words[this.length - 1] === 0) {
+      this.length--;
     }
-  }
-}
+    return this._normSign();
+  };
 
-function afterWrite(stream, state, finished, cb) {
-  if (!finished) onwriteDrain(stream, state);
-  state.pendingcb--;
-  cb();
-  finishMaybe(stream, state);
-}
+  BN.prototype._normSign = function _normSign () {
+    // -0 = 0
+    if (this.length === 1 && this.words[0] === 0) {
+      this.negative = 0;
+    }
+    return this;
+  };
 
-// Must force callback to be called on nextTick, so that we don't
-// emit 'drain' before the write() consumer gets the 'false' return
-// value, and has a chance to attach a 'drain' listener.
-function onwriteDrain(stream, state) {
-  if (state.length === 0 && state.needDrain) {
-    state.needDrain = false;
-    stream.emit('drain');
-  }
-}
+  BN.prototype.inspect = function inspect () {
+    return (this.red ? '<BN-R: ' : '<BN: ') + this.toString(16) + '>';
+  };
 
-// if there's something in the buffer waiting, then process it
-function clearBuffer(stream, state) {
-  state.bufferProcessing = true;
-  var entry = state.bufferedRequest;
+  /*
 
-  if (stream._writev && entry && entry.next) {
-    // Fast case, write everything using _writev()
-    var l = state.bufferedRequestCount;
-    var buffer = new Array(l);
-    var holder = state.corkedRequestsFree;
-    holder.entry = entry;
+  var zeros = [];
+  var groupSizes = [];
+  var groupBases = [];
 
-    var count = 0;
-    var allBuffers = true;
-    while (entry) {
-      buffer[count] = entry;
-      if (!entry.isBuf) allBuffers = false;
-      entry = entry.next;
-      count += 1;
+  var s = '';
+  var i = -1;
+  while (++i < BN.wordSize) {
+    zeros[i] = s;
+    s += '0';
+  }
+  groupSizes[0] = 0;
+  groupSizes[1] = 0;
+  groupBases[0] = 0;
+  groupBases[1] = 0;
+  var base = 2 - 1;
+  while (++base < 36 + 1) {
+    var groupSize = 0;
+    var groupBase = 1;
+    while (groupBase < (1 << BN.wordSize) / base) {
+      groupBase *= base;
+      groupSize += 1;
     }
-    buffer.allBuffers = allBuffers;
+    groupSizes[base] = groupSize;
+    groupBases[base] = groupBase;
+  }
 
-    doWrite(stream, state, true, state.length, buffer, '', holder.finish);
+  */
 
-    // doWrite is almost always async, defer these to save a bit of time
-    // as the hot path ends with doWrite
-    state.pendingcb++;
-    state.lastBufferedRequest = null;
-    if (holder.next) {
-      state.corkedRequestsFree = holder.next;
-      holder.next = null;
-    } else {
-      state.corkedRequestsFree = new CorkedRequest(state);
+  var zeros = [
+    '',
+    '0',
+    '00',
+    '000',
+    '0000',
+    '00000',
+    '000000',
+    '0000000',
+    '00000000',
+    '000000000',
+    '0000000000',
+    '00000000000',
+    '000000000000',
+    '0000000000000',
+    '00000000000000',
+    '000000000000000',
+    '0000000000000000',
+    '00000000000000000',
+    '000000000000000000',
+    '0000000000000000000',
+    '00000000000000000000',
+    '000000000000000000000',
+    '0000000000000000000000',
+    '00000000000000000000000',
+    '000000000000000000000000',
+    '0000000000000000000000000'
+  ];
+
+  var groupSizes = [
+    0, 0,
+    25, 16, 12, 11, 10, 9, 8,
+    8, 7, 7, 7, 7, 6, 6,
+    6, 6, 6, 6, 6, 5, 5,
+    5, 5, 5, 5, 5, 5, 5,
+    5, 5, 5, 5, 5, 5, 5
+  ];
+
+  var groupBases = [
+    0, 0,
+    33554432, 43046721, 16777216, 48828125, 60466176, 40353607, 16777216,
+    43046721, 10000000, 19487171, 35831808, 62748517, 7529536, 11390625,
+    16777216, 24137569, 34012224, 47045881, 64000000, 4084101, 5153632,
+    6436343, 7962624, 9765625, 11881376, 14348907, 17210368, 20511149,
+    24300000, 28629151, 33554432, 39135393, 45435424, 52521875, 60466176
+  ];
+
+  BN.prototype.toString = function toString (base, padding) {
+    base = base || 10;
+    padding = padding | 0 || 1;
+
+    var out;
+    if (base === 16 || base === 'hex') {
+      out = '';
+      var off = 0;
+      var carry = 0;
+      for (var i = 0; i < this.length; i++) {
+        var w = this.words[i];
+        var word = (((w << off) | carry) & 0xffffff).toString(16);
+        carry = (w >>> (24 - off)) & 0xffffff;
+        if (carry !== 0 || i !== this.length - 1) {
+          out = zeros[6 - word.length] + word + out;
+        } else {
+          out = word + out;
+        }
+        off += 2;
+        if (off >= 26) {
+          off -= 26;
+          i--;
+        }
+      }
+      if (carry !== 0) {
+        out = carry.toString(16) + out;
+      }
+      while (out.length % padding !== 0) {
+        out = '0' + out;
+      }
+      if (this.negative !== 0) {
+        out = '-' + out;
+      }
+      return out;
     }
-  } else {
-    // Slow case, write chunks one-by-one
-    while (entry) {
-      var chunk = entry.chunk;
-      var encoding = entry.encoding;
-      var cb = entry.callback;
-      var len = state.objectMode ? 1 : chunk.length;
 
-      doWrite(stream, state, false, len, chunk, encoding, cb);
-      entry = entry.next;
-      // if we didn't call the onwrite immediately, then
-      // it means that we need to wait until it does.
-      // also, that means that the chunk and cb are currently
-      // being processed, so move the buffer counter past them.
-      if (state.writing) {
-        break;
+    if (base === (base | 0) && base >= 2 && base <= 36) {
+      // var groupSize = Math.floor(BN.wordSize * Math.LN2 / Math.log(base));
+      var groupSize = groupSizes[base];
+      // var groupBase = Math.pow(base, groupSize);
+      var groupBase = groupBases[base];
+      out = '';
+      var c = this.clone();
+      c.negative = 0;
+      while (!c.isZero()) {
+        var r = c.modn(groupBase).toString(base);
+        c = c.idivn(groupBase);
+
+        if (!c.isZero()) {
+          out = zeros[groupSize - r.length] + r + out;
+        } else {
+          out = r + out;
+        }
+      }
+      if (this.isZero()) {
+        out = '0' + out;
+      }
+      while (out.length % padding !== 0) {
+        out = '0' + out;
+      }
+      if (this.negative !== 0) {
+        out = '-' + out;
       }
+      return out;
     }
 
-    if (entry === null) state.lastBufferedRequest = null;
-  }
+    assert(false, 'Base should be between 2 and 36');
+  };
 
-  state.bufferedRequestCount = 0;
-  state.bufferedRequest = entry;
-  state.bufferProcessing = false;
-}
+  BN.prototype.toNumber = function toNumber () {
+    var ret = this.words[0];
+    if (this.length === 2) {
+      ret += this.words[1] * 0x4000000;
+    } else if (this.length === 3 && this.words[2] === 0x01) {
+      // NOTE: at this stage it is known that the top bit is set
+      ret += 0x10000000000000 + (this.words[1] * 0x4000000);
+    } else if (this.length > 2) {
+      assert(false, 'Number can only safely store up to 53 bits');
+    }
+    return (this.negative !== 0) ? -ret : ret;
+  };
 
-Writable.prototype._write = function (chunk, encoding, cb) {
-  cb(new Error('_write() is not implemented'));
-};
+  BN.prototype.toJSON = function toJSON () {
+    return this.toString(16);
+  };
 
-Writable.prototype._writev = null;
+  BN.prototype.toBuffer = function toBuffer (endian, length) {
+    assert(typeof Buffer !== 'undefined');
+    return this.toArrayLike(Buffer, endian, length);
+  };
 
-Writable.prototype.end = function (chunk, encoding, cb) {
-  var state = this._writableState;
+  BN.prototype.toArray = function toArray (endian, length) {
+    return this.toArrayLike(Array, endian, length);
+  };
 
-  if (typeof chunk === 'function') {
-    cb = chunk;
-    chunk = null;
-    encoding = null;
-  } else if (typeof encoding === 'function') {
-    cb = encoding;
-    encoding = null;
-  }
+  BN.prototype.toArrayLike = function toArrayLike (ArrayType, endian, length) {
+    var byteLength = this.byteLength();
+    var reqLength = length || Math.max(1, byteLength);
+    assert(byteLength <= reqLength, 'byte array longer than desired length');
+    assert(reqLength > 0, 'Requested array length <= 0');
 
-  if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
+    this.strip();
+    var littleEndian = endian === 'le';
+    var res = new ArrayType(reqLength);
 
-  // .end() fully uncorks
-  if (state.corked) {
-    state.corked = 1;
-    this.uncork();
-  }
+    var b, i;
+    var q = this.clone();
+    if (!littleEndian) {
+      // Assume big-endian
+      for (i = 0; i < reqLength - byteLength; i++) {
+        res[i] = 0;
+      }
 
-  // ignore unnecessary end() calls.
-  if (!state.ending && !state.finished) endWritable(this, state, cb);
-};
+      for (i = 0; !q.isZero(); i++) {
+        b = q.andln(0xff);
+        q.iushrn(8);
 
-function needFinish(state) {
-  return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
-}
-function callFinal(stream, state) {
-  stream._final(function (err) {
-    state.pendingcb--;
-    if (err) {
-      stream.emit('error', err);
-    }
-    state.prefinished = true;
-    stream.emit('prefinish');
-    finishMaybe(stream, state);
-  });
-}
-function prefinish(stream, state) {
-  if (!state.prefinished && !state.finalCalled) {
-    if (typeof stream._final === 'function') {
-      state.pendingcb++;
-      state.finalCalled = true;
-      processNextTick(callFinal, stream, state);
+        res[reqLength - i - 1] = b;
+      }
     } else {
-      state.prefinished = true;
-      stream.emit('prefinish');
-    }
-  }
-}
+      for (i = 0; !q.isZero(); i++) {
+        b = q.andln(0xff);
+        q.iushrn(8);
 
-function finishMaybe(stream, state) {
-  var need = needFinish(state);
-  if (need) {
-    prefinish(stream, state);
-    if (state.pendingcb === 0) {
-      state.finished = true;
-      stream.emit('finish');
+        res[i] = b;
+      }
+
+      for (; i < reqLength; i++) {
+        res[i] = 0;
+      }
     }
-  }
-  return need;
-}
 
-function endWritable(stream, state, cb) {
-  state.ending = true;
-  finishMaybe(stream, state);
-  if (cb) {
-    if (state.finished) processNextTick(cb);else stream.once('finish', cb);
-  }
-  state.ended = true;
-  stream.writable = false;
-}
+    return res;
+  };
 
-function onCorkedFinish(corkReq, state, err) {
-  var entry = corkReq.entry;
-  corkReq.entry = null;
-  while (entry) {
-    var cb = entry.callback;
-    state.pendingcb--;
-    cb(err);
-    entry = entry.next;
-  }
-  if (state.corkedRequestsFree) {
-    state.corkedRequestsFree.next = corkReq;
+  if (Math.clz32) {
+    BN.prototype._countBits = function _countBits (w) {
+      return 32 - Math.clz32(w);
+    };
   } else {
-    state.corkedRequestsFree = corkReq;
+    BN.prototype._countBits = function _countBits (w) {
+      var t = w;
+      var r = 0;
+      if (t >= 0x1000) {
+        r += 13;
+        t >>>= 13;
+      }
+      if (t >= 0x40) {
+        r += 7;
+        t >>>= 7;
+      }
+      if (t >= 0x8) {
+        r += 4;
+        t >>>= 4;
+      }
+      if (t >= 0x02) {
+        r += 2;
+        t >>>= 2;
+      }
+      return r + t;
+    };
   }
-}
 
-Object.defineProperty(Writable.prototype, 'destroyed', {
-  get: function () {
-    if (this._writableState === undefined) {
-      return false;
+  BN.prototype._zeroBits = function _zeroBits (w) {
+    // Short-cut
+    if (w === 0) return 26;
+
+    var t = w;
+    var r = 0;
+    if ((t & 0x1fff) === 0) {
+      r += 13;
+      t >>>= 13;
     }
-    return this._writableState.destroyed;
-  },
-  set: function (value) {
-    // we ignore the value if the stream
-    // has not been initialized yet
-    if (!this._writableState) {
-      return;
+    if ((t & 0x7f) === 0) {
+      r += 7;
+      t >>>= 7;
     }
+    if ((t & 0xf) === 0) {
+      r += 4;
+      t >>>= 4;
+    }
+    if ((t & 0x3) === 0) {
+      r += 2;
+      t >>>= 2;
+    }
+    if ((t & 0x1) === 0) {
+      r++;
+    }
+    return r;
+  };
 
-    // backward compatibility, the user is explicitly
-    // managing destroyed
-    this._writableState.destroyed = value;
-  }
-});
-
-Writable.prototype.destroy = destroyImpl.destroy;
-Writable.prototype._undestroy = destroyImpl.undestroy;
-Writable.prototype._destroy = function (err, cb) {
-  this.end();
-  cb(err);
-};
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./_stream_duplex":14,"./internal/streams/destroy":20,"./internal/streams/stream":21,"_process":12,"core-util-is":5,"inherits":8,"process-nextick-args":11,"safe-buffer":26,"util-deprecate":29}],19:[function(require,module,exports){
-'use strict';
-
-/*<replacement>*/
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+  // Return number of used bits in a BN
+  BN.prototype.bitLength = function bitLength () {
+    var w = this.words[this.length - 1];
+    var hi = this._countBits(w);
+    return (this.length - 1) * 26 + hi;
+  };
 
-var Buffer = require('safe-buffer').Buffer;
-/*</replacement>*/
+  function toBitArray (num) {
+    var w = new Array(num.bitLength());
 
-function copyBuffer(src, target, offset) {
-  src.copy(target, offset);
-}
+    for (var bit = 0; bit < w.length; bit++) {
+      var off = (bit / 26) | 0;
+      var wbit = bit % 26;
 
-module.exports = function () {
-  function BufferList() {
-    _classCallCheck(this, BufferList);
+      w[bit] = (num.words[off] & (1 << wbit)) >>> wbit;
+    }
 
-    this.head = null;
-    this.tail = null;
-    this.length = 0;
+    return w;
   }
 
-  BufferList.prototype.push = function push(v) {
-    var entry = { data: v, next: null };
-    if (this.length > 0) this.tail.next = entry;else this.head = entry;
-    this.tail = entry;
-    ++this.length;
-  };
-
-  BufferList.prototype.unshift = function unshift(v) {
-    var entry = { data: v, next: this.head };
-    if (this.length === 0) this.tail = entry;
-    this.head = entry;
-    ++this.length;
-  };
+  // Number of trailing zero bits
+  BN.prototype.zeroBits = function zeroBits () {
+    if (this.isZero()) return 0;
 
-  BufferList.prototype.shift = function shift() {
-    if (this.length === 0) return;
-    var ret = this.head.data;
-    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
-    --this.length;
-    return ret;
+    var r = 0;
+    for (var i = 0; i < this.length; i++) {
+      var b = this._zeroBits(this.words[i]);
+      r += b;
+      if (b !== 26) break;
+    }
+    return r;
   };
 
-  BufferList.prototype.clear = function clear() {
-    this.head = this.tail = null;
-    this.length = 0;
+  BN.prototype.byteLength = function byteLength () {
+    return Math.ceil(this.bitLength() / 8);
   };
 
-  BufferList.prototype.join = function join(s) {
-    if (this.length === 0) return '';
-    var p = this.head;
-    var ret = '' + p.data;
-    while (p = p.next) {
-      ret += s + p.data;
-    }return ret;
+  BN.prototype.toTwos = function toTwos (width) {
+    if (this.negative !== 0) {
+      return this.abs().inotn(width).iaddn(1);
+    }
+    return this.clone();
   };
 
-  BufferList.prototype.concat = function concat(n) {
-    if (this.length === 0) return Buffer.alloc(0);
-    if (this.length === 1) return this.head.data;
-    var ret = Buffer.allocUnsafe(n >>> 0);
-    var p = this.head;
-    var i = 0;
-    while (p) {
-      copyBuffer(p.data, ret, i);
-      i += p.data.length;
-      p = p.next;
+  BN.prototype.fromTwos = function fromTwos (width) {
+    if (this.testn(width - 1)) {
+      return this.notn(width).iaddn(1).ineg();
     }
-    return ret;
+    return this.clone();
   };
 
-  return BufferList;
-}();
-},{"safe-buffer":26}],20:[function(require,module,exports){
-'use strict';
-
-/*<replacement>*/
-
-var processNextTick = require('process-nextick-args');
-/*</replacement>*/
-
-// undocumented cb() API, needed for core, not for public API
-function destroy(err, cb) {
-  var _this = this;
+  BN.prototype.isNeg = function isNeg () {
+    return this.negative !== 0;
+  };
 
-  var readableDestroyed = this._readableState && this._readableState.destroyed;
-  var writableDestroyed = this._writableState && this._writableState.destroyed;
+  // Return negative clone of `this`
+  BN.prototype.neg = function neg () {
+    return this.clone().ineg();
+  };
 
-  if (readableDestroyed || writableDestroyed) {
-    if (cb) {
-      cb(err);
-    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
-      processNextTick(emitErrorNT, this, err);
+  BN.prototype.ineg = function ineg () {
+    if (!this.isZero()) {
+      this.negative ^= 1;
     }
-    return;
-  }
-
-  // we set destroyed to true before firing error callbacks in order
-  // to make it re-entrance safe in case destroy() is called within callbacks
 
-  if (this._readableState) {
-    this._readableState.destroyed = true;
-  }
-
-  // if this is a duplex stream mark the writable part as destroyed as well
-  if (this._writableState) {
-    this._writableState.destroyed = true;
-  }
+    return this;
+  };
 
-  this._destroy(err || null, function (err) {
-    if (!cb && err) {
-      processNextTick(emitErrorNT, _this, err);
-      if (_this._writableState) {
-        _this._writableState.errorEmitted = true;
-      }
-    } else if (cb) {
-      cb(err);
+  // Or `num` with `this` in-place
+  BN.prototype.iuor = function iuor (num) {
+    while (this.length < num.length) {
+      this.words[this.length++] = 0;
     }
-  });
-}
-
-function undestroy() {
-  if (this._readableState) {
-    this._readableState.destroyed = false;
-    this._readableState.reading = false;
-    this._readableState.ended = false;
-    this._readableState.endEmitted = false;
-  }
 
-  if (this._writableState) {
-    this._writableState.destroyed = false;
-    this._writableState.ended = false;
-    this._writableState.ending = false;
-    this._writableState.finished = false;
-    this._writableState.errorEmitted = false;
-  }
-}
+    for (var i = 0; i < num.length; i++) {
+      this.words[i] = this.words[i] | num.words[i];
+    }
 
-function emitErrorNT(self, err) {
-  self.emit('error', err);
-}
+    return this.strip();
+  };
 
-module.exports = {
-  destroy: destroy,
-  undestroy: undestroy
-};
-},{"process-nextick-args":11}],21:[function(require,module,exports){
-module.exports = require('events').EventEmitter;
+  BN.prototype.ior = function ior (num) {
+    assert((this.negative | num.negative) === 0);
+    return this.iuor(num);
+  };
 
-},{"events":6}],22:[function(require,module,exports){
-module.exports = require('./readable').PassThrough
+  // Or `num` with `this`
+  BN.prototype.or = function or (num) {
+    if (this.length > num.length) return this.clone().ior(num);
+    return num.clone().ior(this);
+  };
 
-},{"./readable":23}],23:[function(require,module,exports){
-exports = module.exports = require('./lib/_stream_readable.js');
-exports.Stream = exports;
-exports.Readable = exports;
-exports.Writable = require('./lib/_stream_writable.js');
-exports.Duplex = require('./lib/_stream_duplex.js');
-exports.Transform = require('./lib/_stream_transform.js');
-exports.PassThrough = require('./lib/_stream_passthrough.js');
+  BN.prototype.uor = function uor (num) {
+    if (this.length > num.length) return this.clone().iuor(num);
+    return num.clone().iuor(this);
+  };
 
-},{"./lib/_stream_duplex.js":14,"./lib/_stream_passthrough.js":15,"./lib/_stream_readable.js":16,"./lib/_stream_transform.js":17,"./lib/_stream_writable.js":18}],24:[function(require,module,exports){
-module.exports = require('./readable').Transform
+  // And `num` with `this` in-place
+  BN.prototype.iuand = function iuand (num) {
+    // b = min-length(num, this)
+    var b;
+    if (this.length > num.length) {
+      b = num;
+    } else {
+      b = this;
+    }
 
-},{"./readable":23}],25:[function(require,module,exports){
-module.exports = require('./lib/_stream_writable.js');
+    for (var i = 0; i < b.length; i++) {
+      this.words[i] = this.words[i] & num.words[i];
+    }
 
-},{"./lib/_stream_writable.js":18}],26:[function(require,module,exports){
-/* eslint-disable node/no-deprecated-api */
-var buffer = require('buffer')
-var Buffer = buffer.Buffer
+    this.length = b.length;
 
-// alternative to using Object.keys for old browsers
-function copyProps (src, dst) {
-  for (var key in src) {
-    dst[key] = src[key]
-  }
-}
-if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
-  module.exports = buffer
-} else {
-  // Copy properties from require('buffer')
-  copyProps(buffer, exports)
-  exports.Buffer = SafeBuffer
-}
+    return this.strip();
+  };
 
-function SafeBuffer (arg, encodingOrOffset, length) {
-  return Buffer(arg, encodingOrOffset, length)
-}
+  BN.prototype.iand = function iand (num) {
+    assert((this.negative | num.negative) === 0);
+    return this.iuand(num);
+  };
 
-// Copy static methods from Buffer
-copyProps(Buffer, SafeBuffer)
+  // And `num` with `this`
+  BN.prototype.and = function and (num) {
+    if (this.length > num.length) return this.clone().iand(num);
+    return num.clone().iand(this);
+  };
 
-SafeBuffer.from = function (arg, encodingOrOffset, length) {
-  if (typeof arg === 'number') {
-    throw new TypeError('Argument must not be a number')
-  }
-  return Buffer(arg, encodingOrOffset, length)
-}
+  BN.prototype.uand = function uand (num) {
+    if (this.length > num.length) return this.clone().iuand(num);
+    return num.clone().iuand(this);
+  };
 
-SafeBuffer.alloc = function (size, fill, encoding) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  var buf = Buffer(size)
-  if (fill !== undefined) {
-    if (typeof encoding === 'string') {
-      buf.fill(fill, encoding)
+  // Xor `num` with `this` in-place
+  BN.prototype.iuxor = function iuxor (num) {
+    // a.length > b.length
+    var a;
+    var b;
+    if (this.length > num.length) {
+      a = this;
+      b = num;
     } else {
-      buf.fill(fill)
+      a = num;
+      b = this;
     }
-  } else {
-    buf.fill(0)
-  }
-  return buf
-}
 
-SafeBuffer.allocUnsafe = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return Buffer(size)
-}
+    for (var i = 0; i < b.length; i++) {
+      this.words[i] = a.words[i] ^ b.words[i];
+    }
 
-SafeBuffer.allocUnsafeSlow = function (size) {
-  if (typeof size !== 'number') {
-    throw new TypeError('Argument must be a number')
-  }
-  return buffer.SlowBuffer(size)
-}
+    if (this !== a) {
+      for (; i < a.length; i++) {
+        this.words[i] = a.words[i];
+      }
+    }
 
-},{"buffer":4}],27:[function(require,module,exports){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
+    this.length = a.length;
 
-module.exports = Stream;
+    return this.strip();
+  };
 
-var EE = require('events').EventEmitter;
-var inherits = require('inherits');
+  BN.prototype.ixor = function ixor (num) {
+    assert((this.negative | num.negative) === 0);
+    return this.iuxor(num);
+  };
 
-inherits(Stream, EE);
-Stream.Readable = require('readable-stream/readable.js');
-Stream.Writable = require('readable-stream/writable.js');
-Stream.Duplex = require('readable-stream/duplex.js');
-Stream.Transform = require('readable-stream/transform.js');
-Stream.PassThrough = require('readable-stream/passthrough.js');
+  // Xor `num` with `this`
+  BN.prototype.xor = function xor (num) {
+    if (this.length > num.length) return this.clone().ixor(num);
+    return num.clone().ixor(this);
+  };
 
-// Backwards-compat with node 0.4.x
-Stream.Stream = Stream;
+  BN.prototype.uxor = function uxor (num) {
+    if (this.length > num.length) return this.clone().iuxor(num);
+    return num.clone().iuxor(this);
+  };
 
+  // Not ``this`` with ``width`` bitwidth
+  BN.prototype.inotn = function inotn (width) {
+    assert(typeof width === 'number' && width >= 0);
 
+    var bytesNeeded = Math.ceil(width / 26) | 0;
+    var bitsLeft = width % 26;
 
-// old-style streams.  Note that the pipe method (the only relevant
-// part of this class) is overridden in the Readable class.
+    // Extend the buffer with leading zeroes
+    this._expand(bytesNeeded);
 
-function Stream() {
-  EE.call(this);
-}
+    if (bitsLeft > 0) {
+      bytesNeeded--;
+    }
 
-Stream.prototype.pipe = function(dest, options) {
-  var source = this;
+    // Handle complete words
+    for (var i = 0; i < bytesNeeded; i++) {
+      this.words[i] = ~this.words[i] & 0x3ffffff;
+    }
 
-  function ondata(chunk) {
-    if (dest.writable) {
-      if (false === dest.write(chunk) && source.pause) {
-        source.pause();
-      }
+    // Handle the residue
+    if (bitsLeft > 0) {
+      this.words[i] = ~this.words[i] & (0x3ffffff >> (26 - bitsLeft));
     }
-  }
 
-  source.on('data', ondata);
+    // And remove leading zeroes
+    return this.strip();
+  };
 
-  function ondrain() {
-    if (source.readable && source.resume) {
-      source.resume();
-    }
-  }
+  BN.prototype.notn = function notn (width) {
+    return this.clone().inotn(width);
+  };
 
-  dest.on('drain', ondrain);
+  // Set `bit` of `this`
+  BN.prototype.setn = function setn (bit, val) {
+    assert(typeof bit === 'number' && bit >= 0);
 
-  // If the 'end' option is not supplied, dest.end() will be called when
-  // source gets the 'end' or 'close' events.  Only dest.end() once.
-  if (!dest._isStdio && (!options || options.end !== false)) {
-    source.on('end', onend);
-    source.on('close', onclose);
-  }
+    var off = (bit / 26) | 0;
+    var wbit = bit % 26;
 
-  var didOnEnd = false;
-  function onend() {
-    if (didOnEnd) return;
-    didOnEnd = true;
+    this._expand(off + 1);
 
-    dest.end();
-  }
+    if (val) {
+      this.words[off] = this.words[off] | (1 << wbit);
+    } else {
+      this.words[off] = this.words[off] & ~(1 << wbit);
+    }
 
+    return this.strip();
+  };
 
-  function onclose() {
-    if (didOnEnd) return;
-    didOnEnd = true;
+  // Add `num` to `this` in-place
+  BN.prototype.iadd = function iadd (num) {
+    var r;
 
-    if (typeof dest.destroy === 'function') dest.destroy();
-  }
+    // negative + positive
+    if (this.negative !== 0 && num.negative === 0) {
+      this.negative = 0;
+      r = this.isub(num);
+      this.negative ^= 1;
+      return this._normSign();
 
-  // don't leave dangling pipes when there are errors.
-  function onerror(er) {
-    cleanup();
-    if (EE.listenerCount(this, 'error') === 0) {
-      throw er; // Unhandled stream error in pipe.
+    // positive + negative
+    } else if (this.negative === 0 && num.negative !== 0) {
+      num.negative = 0;
+      r = this.isub(num);
+      num.negative = 1;
+      return r._normSign();
     }
-  }
 
-  source.on('error', onerror);
-  dest.on('error', onerror);
+    // a.length > b.length
+    var a, b;
+    if (this.length > num.length) {
+      a = this;
+      b = num;
+    } else {
+      a = num;
+      b = this;
+    }
 
-  // remove all the event listeners that were added.
-  function cleanup() {
-    source.removeListener('data', ondata);
-    dest.removeListener('drain', ondrain);
+    var carry = 0;
+    for (var i = 0; i < b.length; i++) {
+      r = (a.words[i] | 0) + (b.words[i] | 0) + carry;
+      this.words[i] = r & 0x3ffffff;
+      carry = r >>> 26;
+    }
+    for (; carry !== 0 && i < a.length; i++) {
+      r = (a.words[i] | 0) + carry;
+      this.words[i] = r & 0x3ffffff;
+      carry = r >>> 26;
+    }
 
-    source.removeListener('end', onend);
-    source.removeListener('close', onclose);
+    this.length = a.length;
+    if (carry !== 0) {
+      this.words[this.length] = carry;
+      this.length++;
+    // Copy the rest of the words
+    } else if (a !== this) {
+      for (; i < a.length; i++) {
+        this.words[i] = a.words[i];
+      }
+    }
 
-    source.removeListener('error', onerror);
-    dest.removeListener('error', onerror);
+    return this;
+  };
 
-    source.removeListener('end', cleanup);
-    source.removeListener('close', cleanup);
+  // Add `num` to `this`
+  BN.prototype.add = function add (num) {
+    var res;
+    if (num.negative !== 0 && this.negative === 0) {
+      num.negative = 0;
+      res = this.sub(num);
+      num.negative ^= 1;
+      return res;
+    } else if (num.negative === 0 && this.negative !== 0) {
+      this.negative = 0;
+      res = num.sub(this);
+      this.negative = 1;
+      return res;
+    }
 
-    dest.removeListener('close', cleanup);
-  }
+    if (this.length > num.length) return this.clone().iadd(num);
 
-  source.on('end', cleanup);
-  source.on('close', cleanup);
+    return num.clone().iadd(this);
+  };
 
-  dest.on('close', cleanup);
+  // Subtract `num` from `this` in-place
+  BN.prototype.isub = function isub (num) {
+    // this - (-num) = this + num
+    if (num.negative !== 0) {
+      num.negative = 0;
+      var r = this.iadd(num);
+      num.negative = 1;
+      return r._normSign();
 
-  dest.emit('pipe', source);
+    // -this - num = -(this + num)
+    } else if (this.negative !== 0) {
+      this.negative = 0;
+      this.iadd(num);
+      this.negative = 1;
+      return this._normSign();
+    }
 
-  // Allow for unix-like usage: A.pipe(B).pipe(C)
-  return dest;
-};
+    // At this point both numbers are positive
+    var cmp = this.cmp(num);
 
-},{"events":6,"inherits":8,"readable-stream/duplex.js":13,"readable-stream/passthrough.js":22,"readable-stream/readable.js":23,"readable-stream/transform.js":24,"readable-stream/writable.js":25}],28:[function(require,module,exports){
-'use strict';
+    // Optimization - zeroify
+    if (cmp === 0) {
+      this.negative = 0;
+      this.length = 1;
+      this.words[0] = 0;
+      return this;
+    }
 
-var Buffer = require('safe-buffer').Buffer;
+    // a > b
+    var a, b;
+    if (cmp > 0) {
+      a = this;
+      b = num;
+    } else {
+      a = num;
+      b = this;
+    }
 
-var isEncoding = Buffer.isEncoding || function (encoding) {
-  encoding = '' + encoding;
-  switch (encoding && encoding.toLowerCase()) {
-    case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':
-      return true;
-    default:
-      return false;
-  }
-};
+    var carry = 0;
+    for (var i = 0; i < b.length; i++) {
+      r = (a.words[i] | 0) - (b.words[i] | 0) + carry;
+      carry = r >> 26;
+      this.words[i] = r & 0x3ffffff;
+    }
+    for (; carry !== 0 && i < a.length; i++) {
+      r = (a.words[i] | 0) + carry;
+      carry = r >> 26;
+      this.words[i] = r & 0x3ffffff;
+    }
 
-function _normalizeEncoding(enc) {
-  if (!enc) return 'utf8';
-  var retried;
-  while (true) {
-    switch (enc) {
-      case 'utf8':
-      case 'utf-8':
-        return 'utf8';
-      case 'ucs2':
-      case 'ucs-2':
-      case 'utf16le':
-      case 'utf-16le':
-        return 'utf16le';
-      case 'latin1':
-      case 'binary':
-        return 'latin1';
-      case 'base64':
-      case 'ascii':
-      case 'hex':
-        return enc;
-      default:
-        if (retried) return; // undefined
-        enc = ('' + enc).toLowerCase();
-        retried = true;
+    // Copy rest of the words
+    if (carry === 0 && i < a.length && a !== this) {
+      for (; i < a.length; i++) {
+        this.words[i] = a.words[i];
+      }
+    }
+
+    this.length = Math.max(this.length, i);
+
+    if (a !== this) {
+      this.negative = 1;
     }
-  }
-};
 
-// Do not cache `Buffer.isEncoding` when checking encoding names as some
-// modules monkey-patch it to support additional encodings
-function normalizeEncoding(enc) {
-  var nenc = _normalizeEncoding(enc);
-  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
-  return nenc || enc;
-}
+    return this.strip();
+  };
 
-// StringDecoder provides an interface for efficiently splitting a series of
-// buffers into a series of JS strings without breaking apart multi-byte
-// characters.
-exports.StringDecoder = StringDecoder;
-function StringDecoder(encoding) {
-  this.encoding = normalizeEncoding(encoding);
-  var nb;
-  switch (this.encoding) {
-    case 'utf16le':
-      this.text = utf16Text;
-      this.end = utf16End;
-      nb = 4;
-      break;
-    case 'utf8':
-      this.fillLast = utf8FillLast;
-      nb = 4;
-      break;
-    case 'base64':
-      this.text = base64Text;
-      this.end = base64End;
-      nb = 3;
-      break;
-    default:
-      this.write = simpleWrite;
-      this.end = simpleEnd;
-      return;
-  }
-  this.lastNeed = 0;
-  this.lastTotal = 0;
-  this.lastChar = Buffer.allocUnsafe(nb);
-}
+  // Subtract `num` from `this`
+  BN.prototype.sub = function sub (num) {
+    return this.clone().isub(num);
+  };
 
-StringDecoder.prototype.write = function (buf) {
-  if (buf.length === 0) return '';
-  var r;
-  var i;
-  if (this.lastNeed) {
-    r = this.fillLast(buf);
-    if (r === undefined) return '';
-    i = this.lastNeed;
-    this.lastNeed = 0;
-  } else {
-    i = 0;
-  }
-  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
-  return r || '';
-};
+  function smallMulTo (self, num, out) {
+    out.negative = num.negative ^ self.negative;
+    var len = (self.length + num.length) | 0;
+    out.length = len;
+    len = (len - 1) | 0;
 
-StringDecoder.prototype.end = utf8End;
+    // Peel one iteration (compiler can't do it, because of code complexity)
+    var a = self.words[0] | 0;
+    var b = num.words[0] | 0;
+    var r = a * b;
 
-// Returns only complete characters in a Buffer
-StringDecoder.prototype.text = utf8Text;
+    var lo = r & 0x3ffffff;
+    var carry = (r / 0x4000000) | 0;
+    out.words[0] = lo;
 
-// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
-StringDecoder.prototype.fillLast = function (buf) {
-  if (this.lastNeed <= buf.length) {
-    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
-    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
+    for (var k = 1; k < len; k++) {
+      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+      // note that ncarry could be >= 0x3ffffff
+      var ncarry = carry >>> 26;
+      var rword = carry & 0x3ffffff;
+      var maxJ = Math.min(k, num.length - 1);
+      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
+        var i = (k - j) | 0;
+        a = self.words[i] | 0;
+        b = num.words[j] | 0;
+        r = a * b + rword;
+        ncarry += (r / 0x4000000) | 0;
+        rword = r & 0x3ffffff;
+      }
+      out.words[k] = rword | 0;
+      carry = ncarry | 0;
+    }
+    if (carry !== 0) {
+      out.words[k] = carry | 0;
+    } else {
+      out.length--;
+    }
+
+    return out.strip();
   }
-  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
-  this.lastNeed -= buf.length;
-};
 
-// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
-// continuation byte.
-function utf8CheckByte(byte) {
-  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
-  return -1;
-}
+  // TODO(indutny): it may be reasonable to omit it for users who don't need
+  // to work with 256-bit numbers, otherwise it gives 20% improvement for 256-bit
+  // multiplication (like elliptic secp256k1).
+  var comb10MulTo = function comb10MulTo (self, num, out) {
+    var a = self.words;
+    var b = num.words;
+    var o = out.words;
+    var c = 0;
+    var lo;
+    var mid;
+    var hi;
+    var a0 = a[0] | 0;
+    var al0 = a0 & 0x1fff;
+    var ah0 = a0 >>> 13;
+    var a1 = a[1] | 0;
+    var al1 = a1 & 0x1fff;
+    var ah1 = a1 >>> 13;
+    var a2 = a[2] | 0;
+    var al2 = a2 & 0x1fff;
+    var ah2 = a2 >>> 13;
+    var a3 = a[3] | 0;
+    var al3 = a3 & 0x1fff;
+    var ah3 = a3 >>> 13;
+    var a4 = a[4] | 0;
+    var al4 = a4 & 0x1fff;
+    var ah4 = a4 >>> 13;
+    var a5 = a[5] | 0;
+    var al5 = a5 & 0x1fff;
+    var ah5 = a5 >>> 13;
+    var a6 = a[6] | 0;
+    var al6 = a6 & 0x1fff;
+    var ah6 = a6 >>> 13;
+    var a7 = a[7] | 0;
+    var al7 = a7 & 0x1fff;
+    var ah7 = a7 >>> 13;
+    var a8 = a[8] | 0;
+    var al8 = a8 & 0x1fff;
+    var ah8 = a8 >>> 13;
+    var a9 = a[9] | 0;
+    var al9 = a9 & 0x1fff;
+    var ah9 = a9 >>> 13;
+    var b0 = b[0] | 0;
+    var bl0 = b0 & 0x1fff;
+    var bh0 = b0 >>> 13;
+    var b1 = b[1] | 0;
+    var bl1 = b1 & 0x1fff;
+    var bh1 = b1 >>> 13;
+    var b2 = b[2] | 0;
+    var bl2 = b2 & 0x1fff;
+    var bh2 = b2 >>> 13;
+    var b3 = b[3] | 0;
+    var bl3 = b3 & 0x1fff;
+    var bh3 = b3 >>> 13;
+    var b4 = b[4] | 0;
+    var bl4 = b4 & 0x1fff;
+    var bh4 = b4 >>> 13;
+    var b5 = b[5] | 0;
+    var bl5 = b5 & 0x1fff;
+    var bh5 = b5 >>> 13;
+    var b6 = b[6] | 0;
+    var bl6 = b6 & 0x1fff;
+    var bh6 = b6 >>> 13;
+    var b7 = b[7] | 0;
+    var bl7 = b7 & 0x1fff;
+    var bh7 = b7 >>> 13;
+    var b8 = b[8] | 0;
+    var bl8 = b8 & 0x1fff;
+    var bh8 = b8 >>> 13;
+    var b9 = b[9] | 0;
+    var bl9 = b9 & 0x1fff;
+    var bh9 = b9 >>> 13;
 
-// Checks at most 3 bytes at the end of a Buffer in order to detect an
-// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
-// needed to complete the UTF-8 character (if applicable) are returned.
-function utf8CheckIncomplete(self, buf, i) {
-  var j = buf.length - 1;
-  if (j < i) return 0;
-  var nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) self.lastNeed = nb - 1;
-    return nb;
-  }
-  if (--j < i) return 0;
-  nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) self.lastNeed = nb - 2;
-    return nb;
-  }
-  if (--j < i) return 0;
-  nb = utf8CheckByte(buf[j]);
-  if (nb >= 0) {
-    if (nb > 0) {
-      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
+    out.negative = self.negative ^ num.negative;
+    out.length = 19;
+    /* k = 0 */
+    lo = Math.imul(al0, bl0);
+    mid = Math.imul(al0, bh0);
+    mid = (mid + Math.imul(ah0, bl0)) | 0;
+    hi = Math.imul(ah0, bh0);
+    var w0 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w0 >>> 26)) | 0;
+    w0 &= 0x3ffffff;
+    /* k = 1 */
+    lo = Math.imul(al1, bl0);
+    mid = Math.imul(al1, bh0);
+    mid = (mid + Math.imul(ah1, bl0)) | 0;
+    hi = Math.imul(ah1, bh0);
+    lo = (lo + Math.imul(al0, bl1)) | 0;
+    mid = (mid + Math.imul(al0, bh1)) | 0;
+    mid = (mid + Math.imul(ah0, bl1)) | 0;
+    hi = (hi + Math.imul(ah0, bh1)) | 0;
+    var w1 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w1 >>> 26)) | 0;
+    w1 &= 0x3ffffff;
+    /* k = 2 */
+    lo = Math.imul(al2, bl0);
+    mid = Math.imul(al2, bh0);
+    mid = (mid + Math.imul(ah2, bl0)) | 0;
+    hi = Math.imul(ah2, bh0);
+    lo = (lo + Math.imul(al1, bl1)) | 0;
+    mid = (mid + Math.imul(al1, bh1)) | 0;
+    mid = (mid + Math.imul(ah1, bl1)) | 0;
+    hi = (hi + Math.imul(ah1, bh1)) | 0;
+    lo = (lo + Math.imul(al0, bl2)) | 0;
+    mid = (mid + Math.imul(al0, bh2)) | 0;
+    mid = (mid + Math.imul(ah0, bl2)) | 0;
+    hi = (hi + Math.imul(ah0, bh2)) | 0;
+    var w2 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w2 >>> 26)) | 0;
+    w2 &= 0x3ffffff;
+    /* k = 3 */
+    lo = Math.imul(al3, bl0);
+    mid = Math.imul(al3, bh0);
+    mid = (mid + Math.imul(ah3, bl0)) | 0;
+    hi = Math.imul(ah3, bh0);
+    lo = (lo + Math.imul(al2, bl1)) | 0;
+    mid = (mid + Math.imul(al2, bh1)) | 0;
+    mid = (mid + Math.imul(ah2, bl1)) | 0;
+    hi = (hi + Math.imul(ah2, bh1)) | 0;
+    lo = (lo + Math.imul(al1, bl2)) | 0;
+    mid = (mid + Math.imul(al1, bh2)) | 0;
+    mid = (mid + Math.imul(ah1, bl2)) | 0;
+    hi = (hi + Math.imul(ah1, bh2)) | 0;
+    lo = (lo + Math.imul(al0, bl3)) | 0;
+    mid = (mid + Math.imul(al0, bh3)) | 0;
+    mid = (mid + Math.imul(ah0, bl3)) | 0;
+    hi = (hi + Math.imul(ah0, bh3)) | 0;
+    var w3 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w3 >>> 26)) | 0;
+    w3 &= 0x3ffffff;
+    /* k = 4 */
+    lo = Math.imul(al4, bl0);
+    mid = Math.imul(al4, bh0);
+    mid = (mid + Math.imul(ah4, bl0)) | 0;
+    hi = Math.imul(ah4, bh0);
+    lo = (lo + Math.imul(al3, bl1)) | 0;
+    mid = (mid + Math.imul(al3, bh1)) | 0;
+    mid = (mid + Math.imul(ah3, bl1)) | 0;
+    hi = (hi + Math.imul(ah3, bh1)) | 0;
+    lo = (lo + Math.imul(al2, bl2)) | 0;
+    mid = (mid + Math.imul(al2, bh2)) | 0;
+    mid = (mid + Math.imul(ah2, bl2)) | 0;
+    hi = (hi + Math.imul(ah2, bh2)) | 0;
+    lo = (lo + Math.imul(al1, bl3)) | 0;
+    mid = (mid + Math.imul(al1, bh3)) | 0;
+    mid = (mid + Math.imul(ah1, bl3)) | 0;
+    hi = (hi + Math.imul(ah1, bh3)) | 0;
+    lo = (lo + Math.imul(al0, bl4)) | 0;
+    mid = (mid + Math.imul(al0, bh4)) | 0;
+    mid = (mid + Math.imul(ah0, bl4)) | 0;
+    hi = (hi + Math.imul(ah0, bh4)) | 0;
+    var w4 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w4 >>> 26)) | 0;
+    w4 &= 0x3ffffff;
+    /* k = 5 */
+    lo = Math.imul(al5, bl0);
+    mid = Math.imul(al5, bh0);
+    mid = (mid + Math.imul(ah5, bl0)) | 0;
+    hi = Math.imul(ah5, bh0);
+    lo = (lo + Math.imul(al4, bl1)) | 0;
+    mid = (mid + Math.imul(al4, bh1)) | 0;
+    mid = (mid + Math.imul(ah4, bl1)) | 0;
+    hi = (hi + Math.imul(ah4, bh1)) | 0;
+    lo = (lo + Math.imul(al3, bl2)) | 0;
+    mid = (mid + Math.imul(al3, bh2)) | 0;
+    mid = (mid + Math.imul(ah3, bl2)) | 0;
+    hi = (hi + Math.imul(ah3, bh2)) | 0;
+    lo = (lo + Math.imul(al2, bl3)) | 0;
+    mid = (mid + Math.imul(al2, bh3)) | 0;
+    mid = (mid + Math.imul(ah2, bl3)) | 0;
+    hi = (hi + Math.imul(ah2, bh3)) | 0;
+    lo = (lo + Math.imul(al1, bl4)) | 0;
+    mid = (mid + Math.imul(al1, bh4)) | 0;
+    mid = (mid + Math.imul(ah1, bl4)) | 0;
+    hi = (hi + Math.imul(ah1, bh4)) | 0;
+    lo = (lo + Math.imul(al0, bl5)) | 0;
+    mid = (mid + Math.imul(al0, bh5)) | 0;
+    mid = (mid + Math.imul(ah0, bl5)) | 0;
+    hi = (hi + Math.imul(ah0, bh5)) | 0;
+    var w5 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w5 >>> 26)) | 0;
+    w5 &= 0x3ffffff;
+    /* k = 6 */
+    lo = Math.imul(al6, bl0);
+    mid = Math.imul(al6, bh0);
+    mid = (mid + Math.imul(ah6, bl0)) | 0;
+    hi = Math.imul(ah6, bh0);
+    lo = (lo + Math.imul(al5, bl1)) | 0;
+    mid = (mid + Math.imul(al5, bh1)) | 0;
+    mid = (mid + Math.imul(ah5, bl1)) | 0;
+    hi = (hi + Math.imul(ah5, bh1)) | 0;
+    lo = (lo + Math.imul(al4, bl2)) | 0;
+    mid = (mid + Math.imul(al4, bh2)) | 0;
+    mid = (mid + Math.imul(ah4, bl2)) | 0;
+    hi = (hi + Math.imul(ah4, bh2)) | 0;
+    lo = (lo + Math.imul(al3, bl3)) | 0;
+    mid = (mid + Math.imul(al3, bh3)) | 0;
+    mid = (mid + Math.imul(ah3, bl3)) | 0;
+    hi = (hi + Math.imul(ah3, bh3)) | 0;
+    lo = (lo + Math.imul(al2, bl4)) | 0;
+    mid = (mid + Math.imul(al2, bh4)) | 0;
+    mid = (mid + Math.imul(ah2, bl4)) | 0;
+    hi = (hi + Math.imul(ah2, bh4)) | 0;
+    lo = (lo + Math.imul(al1, bl5)) | 0;
+    mid = (mid + Math.imul(al1, bh5)) | 0;
+    mid = (mid + Math.imul(ah1, bl5)) | 0;
+    hi = (hi + Math.imul(ah1, bh5)) | 0;
+    lo = (lo + Math.imul(al0, bl6)) | 0;
+    mid = (mid + Math.imul(al0, bh6)) | 0;
+    mid = (mid + Math.imul(ah0, bl6)) | 0;
+    hi = (hi + Math.imul(ah0, bh6)) | 0;
+    var w6 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w6 >>> 26)) | 0;
+    w6 &= 0x3ffffff;
+    /* k = 7 */
+    lo = Math.imul(al7, bl0);
+    mid = Math.imul(al7, bh0);
+    mid = (mid + Math.imul(ah7, bl0)) | 0;
+    hi = Math.imul(ah7, bh0);
+    lo = (lo + Math.imul(al6, bl1)) | 0;
+    mid = (mid + Math.imul(al6, bh1)) | 0;
+    mid = (mid + Math.imul(ah6, bl1)) | 0;
+    hi = (hi + Math.imul(ah6, bh1)) | 0;
+    lo = (lo + Math.imul(al5, bl2)) | 0;
+    mid = (mid + Math.imul(al5, bh2)) | 0;
+    mid = (mid + Math.imul(ah5, bl2)) | 0;
+    hi = (hi + Math.imul(ah5, bh2)) | 0;
+    lo = (lo + Math.imul(al4, bl3)) | 0;
+    mid = (mid + Math.imul(al4, bh3)) | 0;
+    mid = (mid + Math.imul(ah4, bl3)) | 0;
+    hi = (hi + Math.imul(ah4, bh3)) | 0;
+    lo = (lo + Math.imul(al3, bl4)) | 0;
+    mid = (mid + Math.imul(al3, bh4)) | 0;
+    mid = (mid + Math.imul(ah3, bl4)) | 0;
+    hi = (hi + Math.imul(ah3, bh4)) | 0;
+    lo = (lo + Math.imul(al2, bl5)) | 0;
+    mid = (mid + Math.imul(al2, bh5)) | 0;
+    mid = (mid + Math.imul(ah2, bl5)) | 0;
+    hi = (hi + Math.imul(ah2, bh5)) | 0;
+    lo = (lo + Math.imul(al1, bl6)) | 0;
+    mid = (mid + Math.imul(al1, bh6)) | 0;
+    mid = (mid + Math.imul(ah1, bl6)) | 0;
+    hi = (hi + Math.imul(ah1, bh6)) | 0;
+    lo = (lo + Math.imul(al0, bl7)) | 0;
+    mid = (mid + Math.imul(al0, bh7)) | 0;
+    mid = (mid + Math.imul(ah0, bl7)) | 0;
+    hi = (hi + Math.imul(ah0, bh7)) | 0;
+    var w7 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w7 >>> 26)) | 0;
+    w7 &= 0x3ffffff;
+    /* k = 8 */
+    lo = Math.imul(al8, bl0);
+    mid = Math.imul(al8, bh0);
+    mid = (mid + Math.imul(ah8, bl0)) | 0;
+    hi = Math.imul(ah8, bh0);
+    lo = (lo + Math.imul(al7, bl1)) | 0;
+    mid = (mid + Math.imul(al7, bh1)) | 0;
+    mid = (mid + Math.imul(ah7, bl1)) | 0;
+    hi = (hi + Math.imul(ah7, bh1)) | 0;
+    lo = (lo + Math.imul(al6, bl2)) | 0;
+    mid = (mid + Math.imul(al6, bh2)) | 0;
+    mid = (mid + Math.imul(ah6, bl2)) | 0;
+    hi = (hi + Math.imul(ah6, bh2)) | 0;
+    lo = (lo + Math.imul(al5, bl3)) | 0;
+    mid = (mid + Math.imul(al5, bh3)) | 0;
+    mid = (mid + Math.imul(ah5, bl3)) | 0;
+    hi = (hi + Math.imul(ah5, bh3)) | 0;
+    lo = (lo + Math.imul(al4, bl4)) | 0;
+    mid = (mid + Math.imul(al4, bh4)) | 0;
+    mid = (mid + Math.imul(ah4, bl4)) | 0;
+    hi = (hi + Math.imul(ah4, bh4)) | 0;
+    lo = (lo + Math.imul(al3, bl5)) | 0;
+    mid = (mid + Math.imul(al3, bh5)) | 0;
+    mid = (mid + Math.imul(ah3, bl5)) | 0;
+    hi = (hi + Math.imul(ah3, bh5)) | 0;
+    lo = (lo + Math.imul(al2, bl6)) | 0;
+    mid = (mid + Math.imul(al2, bh6)) | 0;
+    mid = (mid + Math.imul(ah2, bl6)) | 0;
+    hi = (hi + Math.imul(ah2, bh6)) | 0;
+    lo = (lo + Math.imul(al1, bl7)) | 0;
+    mid = (mid + Math.imul(al1, bh7)) | 0;
+    mid = (mid + Math.imul(ah1, bl7)) | 0;
+    hi = (hi + Math.imul(ah1, bh7)) | 0;
+    lo = (lo + Math.imul(al0, bl8)) | 0;
+    mid = (mid + Math.imul(al0, bh8)) | 0;
+    mid = (mid + Math.imul(ah0, bl8)) | 0;
+    hi = (hi + Math.imul(ah0, bh8)) | 0;
+    var w8 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w8 >>> 26)) | 0;
+    w8 &= 0x3ffffff;
+    /* k = 9 */
+    lo = Math.imul(al9, bl0);
+    mid = Math.imul(al9, bh0);
+    mid = (mid + Math.imul(ah9, bl0)) | 0;
+    hi = Math.imul(ah9, bh0);
+    lo = (lo + Math.imul(al8, bl1)) | 0;
+    mid = (mid + Math.imul(al8, bh1)) | 0;
+    mid = (mid + Math.imul(ah8, bl1)) | 0;
+    hi = (hi + Math.imul(ah8, bh1)) | 0;
+    lo = (lo + Math.imul(al7, bl2)) | 0;
+    mid = (mid + Math.imul(al7, bh2)) | 0;
+    mid = (mid + Math.imul(ah7, bl2)) | 0;
+    hi = (hi + Math.imul(ah7, bh2)) | 0;
+    lo = (lo + Math.imul(al6, bl3)) | 0;
+    mid = (mid + Math.imul(al6, bh3)) | 0;
+    mid = (mid + Math.imul(ah6, bl3)) | 0;
+    hi = (hi + Math.imul(ah6, bh3)) | 0;
+    lo = (lo + Math.imul(al5, bl4)) | 0;
+    mid = (mid + Math.imul(al5, bh4)) | 0;
+    mid = (mid + Math.imul(ah5, bl4)) | 0;
+    hi = (hi + Math.imul(ah5, bh4)) | 0;
+    lo = (lo + Math.imul(al4, bl5)) | 0;
+    mid = (mid + Math.imul(al4, bh5)) | 0;
+    mid = (mid + Math.imul(ah4, bl5)) | 0;
+    hi = (hi + Math.imul(ah4, bh5)) | 0;
+    lo = (lo + Math.imul(al3, bl6)) | 0;
+    mid = (mid + Math.imul(al3, bh6)) | 0;
+    mid = (mid + Math.imul(ah3, bl6)) | 0;
+    hi = (hi + Math.imul(ah3, bh6)) | 0;
+    lo = (lo + Math.imul(al2, bl7)) | 0;
+    mid = (mid + Math.imul(al2, bh7)) | 0;
+    mid = (mid + Math.imul(ah2, bl7)) | 0;
+    hi = (hi + Math.imul(ah2, bh7)) | 0;
+    lo = (lo + Math.imul(al1, bl8)) | 0;
+    mid = (mid + Math.imul(al1, bh8)) | 0;
+    mid = (mid + Math.imul(ah1, bl8)) | 0;
+    hi = (hi + Math.imul(ah1, bh8)) | 0;
+    lo = (lo + Math.imul(al0, bl9)) | 0;
+    mid = (mid + Math.imul(al0, bh9)) | 0;
+    mid = (mid + Math.imul(ah0, bl9)) | 0;
+    hi = (hi + Math.imul(ah0, bh9)) | 0;
+    var w9 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w9 >>> 26)) | 0;
+    w9 &= 0x3ffffff;
+    /* k = 10 */
+    lo = Math.imul(al9, bl1);
+    mid = Math.imul(al9, bh1);
+    mid = (mid + Math.imul(ah9, bl1)) | 0;
+    hi = Math.imul(ah9, bh1);
+    lo = (lo + Math.imul(al8, bl2)) | 0;
+    mid = (mid + Math.imul(al8, bh2)) | 0;
+    mid = (mid + Math.imul(ah8, bl2)) | 0;
+    hi = (hi + Math.imul(ah8, bh2)) | 0;
+    lo = (lo + Math.imul(al7, bl3)) | 0;
+    mid = (mid + Math.imul(al7, bh3)) | 0;
+    mid = (mid + Math.imul(ah7, bl3)) | 0;
+    hi = (hi + Math.imul(ah7, bh3)) | 0;
+    lo = (lo + Math.imul(al6, bl4)) | 0;
+    mid = (mid + Math.imul(al6, bh4)) | 0;
+    mid = (mid + Math.imul(ah6, bl4)) | 0;
+    hi = (hi + Math.imul(ah6, bh4)) | 0;
+    lo = (lo + Math.imul(al5, bl5)) | 0;
+    mid = (mid + Math.imul(al5, bh5)) | 0;
+    mid = (mid + Math.imul(ah5, bl5)) | 0;
+    hi = (hi + Math.imul(ah5, bh5)) | 0;
+    lo = (lo + Math.imul(al4, bl6)) | 0;
+    mid = (mid + Math.imul(al4, bh6)) | 0;
+    mid = (mid + Math.imul(ah4, bl6)) | 0;
+    hi = (hi + Math.imul(ah4, bh6)) | 0;
+    lo = (lo + Math.imul(al3, bl7)) | 0;
+    mid = (mid + Math.imul(al3, bh7)) | 0;
+    mid = (mid + Math.imul(ah3, bl7)) | 0;
+    hi = (hi + Math.imul(ah3, bh7)) | 0;
+    lo = (lo + Math.imul(al2, bl8)) | 0;
+    mid = (mid + Math.imul(al2, bh8)) | 0;
+    mid = (mid + Math.imul(ah2, bl8)) | 0;
+    hi = (hi + Math.imul(ah2, bh8)) | 0;
+    lo = (lo + Math.imul(al1, bl9)) | 0;
+    mid = (mid + Math.imul(al1, bh9)) | 0;
+    mid = (mid + Math.imul(ah1, bl9)) | 0;
+    hi = (hi + Math.imul(ah1, bh9)) | 0;
+    var w10 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w10 >>> 26)) | 0;
+    w10 &= 0x3ffffff;
+    /* k = 11 */
+    lo = Math.imul(al9, bl2);
+    mid = Math.imul(al9, bh2);
+    mid = (mid + Math.imul(ah9, bl2)) | 0;
+    hi = Math.imul(ah9, bh2);
+    lo = (lo + Math.imul(al8, bl3)) | 0;
+    mid = (mid + Math.imul(al8, bh3)) | 0;
+    mid = (mid + Math.imul(ah8, bl3)) | 0;
+    hi = (hi + Math.imul(ah8, bh3)) | 0;
+    lo = (lo + Math.imul(al7, bl4)) | 0;
+    mid = (mid + Math.imul(al7, bh4)) | 0;
+    mid = (mid + Math.imul(ah7, bl4)) | 0;
+    hi = (hi + Math.imul(ah7, bh4)) | 0;
+    lo = (lo + Math.imul(al6, bl5)) | 0;
+    mid = (mid + Math.imul(al6, bh5)) | 0;
+    mid = (mid + Math.imul(ah6, bl5)) | 0;
+    hi = (hi + Math.imul(ah6, bh5)) | 0;
+    lo = (lo + Math.imul(al5, bl6)) | 0;
+    mid = (mid + Math.imul(al5, bh6)) | 0;
+    mid = (mid + Math.imul(ah5, bl6)) | 0;
+    hi = (hi + Math.imul(ah5, bh6)) | 0;
+    lo = (lo + Math.imul(al4, bl7)) | 0;
+    mid = (mid + Math.imul(al4, bh7)) | 0;
+    mid = (mid + Math.imul(ah4, bl7)) | 0;
+    hi = (hi + Math.imul(ah4, bh7)) | 0;
+    lo = (lo + Math.imul(al3, bl8)) | 0;
+    mid = (mid + Math.imul(al3, bh8)) | 0;
+    mid = (mid + Math.imul(ah3, bl8)) | 0;
+    hi = (hi + Math.imul(ah3, bh8)) | 0;
+    lo = (lo + Math.imul(al2, bl9)) | 0;
+    mid = (mid + Math.imul(al2, bh9)) | 0;
+    mid = (mid + Math.imul(ah2, bl9)) | 0;
+    hi = (hi + Math.imul(ah2, bh9)) | 0;
+    var w11 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w11 >>> 26)) | 0;
+    w11 &= 0x3ffffff;
+    /* k = 12 */
+    lo = Math.imul(al9, bl3);
+    mid = Math.imul(al9, bh3);
+    mid = (mid + Math.imul(ah9, bl3)) | 0;
+    hi = Math.imul(ah9, bh3);
+    lo = (lo + Math.imul(al8, bl4)) | 0;
+    mid = (mid + Math.imul(al8, bh4)) | 0;
+    mid = (mid + Math.imul(ah8, bl4)) | 0;
+    hi = (hi + Math.imul(ah8, bh4)) | 0;
+    lo = (lo + Math.imul(al7, bl5)) | 0;
+    mid = (mid + Math.imul(al7, bh5)) | 0;
+    mid = (mid + Math.imul(ah7, bl5)) | 0;
+    hi = (hi + Math.imul(ah7, bh5)) | 0;
+    lo = (lo + Math.imul(al6, bl6)) | 0;
+    mid = (mid + Math.imul(al6, bh6)) | 0;
+    mid = (mid + Math.imul(ah6, bl6)) | 0;
+    hi = (hi + Math.imul(ah6, bh6)) | 0;
+    lo = (lo + Math.imul(al5, bl7)) | 0;
+    mid = (mid + Math.imul(al5, bh7)) | 0;
+    mid = (mid + Math.imul(ah5, bl7)) | 0;
+    hi = (hi + Math.imul(ah5, bh7)) | 0;
+    lo = (lo + Math.imul(al4, bl8)) | 0;
+    mid = (mid + Math.imul(al4, bh8)) | 0;
+    mid = (mid + Math.imul(ah4, bl8)) | 0;
+    hi = (hi + Math.imul(ah4, bh8)) | 0;
+    lo = (lo + Math.imul(al3, bl9)) | 0;
+    mid = (mid + Math.imul(al3, bh9)) | 0;
+    mid = (mid + Math.imul(ah3, bl9)) | 0;
+    hi = (hi + Math.imul(ah3, bh9)) | 0;
+    var w12 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w12 >>> 26)) | 0;
+    w12 &= 0x3ffffff;
+    /* k = 13 */
+    lo = Math.imul(al9, bl4);
+    mid = Math.imul(al9, bh4);
+    mid = (mid + Math.imul(ah9, bl4)) | 0;
+    hi = Math.imul(ah9, bh4);
+    lo = (lo + Math.imul(al8, bl5)) | 0;
+    mid = (mid + Math.imul(al8, bh5)) | 0;
+    mid = (mid + Math.imul(ah8, bl5)) | 0;
+    hi = (hi + Math.imul(ah8, bh5)) | 0;
+    lo = (lo + Math.imul(al7, bl6)) | 0;
+    mid = (mid + Math.imul(al7, bh6)) | 0;
+    mid = (mid + Math.imul(ah7, bl6)) | 0;
+    hi = (hi + Math.imul(ah7, bh6)) | 0;
+    lo = (lo + Math.imul(al6, bl7)) | 0;
+    mid = (mid + Math.imul(al6, bh7)) | 0;
+    mid = (mid + Math.imul(ah6, bl7)) | 0;
+    hi = (hi + Math.imul(ah6, bh7)) | 0;
+    lo = (lo + Math.imul(al5, bl8)) | 0;
+    mid = (mid + Math.imul(al5, bh8)) | 0;
+    mid = (mid + Math.imul(ah5, bl8)) | 0;
+    hi = (hi + Math.imul(ah5, bh8)) | 0;
+    lo = (lo + Math.imul(al4, bl9)) | 0;
+    mid = (mid + Math.imul(al4, bh9)) | 0;
+    mid = (mid + Math.imul(ah4, bl9)) | 0;
+    hi = (hi + Math.imul(ah4, bh9)) | 0;
+    var w13 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w13 >>> 26)) | 0;
+    w13 &= 0x3ffffff;
+    /* k = 14 */
+    lo = Math.imul(al9, bl5);
+    mid = Math.imul(al9, bh5);
+    mid = (mid + Math.imul(ah9, bl5)) | 0;
+    hi = Math.imul(ah9, bh5);
+    lo = (lo + Math.imul(al8, bl6)) | 0;
+    mid = (mid + Math.imul(al8, bh6)) | 0;
+    mid = (mid + Math.imul(ah8, bl6)) | 0;
+    hi = (hi + Math.imul(ah8, bh6)) | 0;
+    lo = (lo + Math.imul(al7, bl7)) | 0;
+    mid = (mid + Math.imul(al7, bh7)) | 0;
+    mid = (mid + Math.imul(ah7, bl7)) | 0;
+    hi = (hi + Math.imul(ah7, bh7)) | 0;
+    lo = (lo + Math.imul(al6, bl8)) | 0;
+    mid = (mid + Math.imul(al6, bh8)) | 0;
+    mid = (mid + Math.imul(ah6, bl8)) | 0;
+    hi = (hi + Math.imul(ah6, bh8)) | 0;
+    lo = (lo + Math.imul(al5, bl9)) | 0;
+    mid = (mid + Math.imul(al5, bh9)) | 0;
+    mid = (mid + Math.imul(ah5, bl9)) | 0;
+    hi = (hi + Math.imul(ah5, bh9)) | 0;
+    var w14 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w14 >>> 26)) | 0;
+    w14 &= 0x3ffffff;
+    /* k = 15 */
+    lo = Math.imul(al9, bl6);
+    mid = Math.imul(al9, bh6);
+    mid = (mid + Math.imul(ah9, bl6)) | 0;
+    hi = Math.imul(ah9, bh6);
+    lo = (lo + Math.imul(al8, bl7)) | 0;
+    mid = (mid + Math.imul(al8, bh7)) | 0;
+    mid = (mid + Math.imul(ah8, bl7)) | 0;
+    hi = (hi + Math.imul(ah8, bh7)) | 0;
+    lo = (lo + Math.imul(al7, bl8)) | 0;
+    mid = (mid + Math.imul(al7, bh8)) | 0;
+    mid = (mid + Math.imul(ah7, bl8)) | 0;
+    hi = (hi + Math.imul(ah7, bh8)) | 0;
+    lo = (lo + Math.imul(al6, bl9)) | 0;
+    mid = (mid + Math.imul(al6, bh9)) | 0;
+    mid = (mid + Math.imul(ah6, bl9)) | 0;
+    hi = (hi + Math.imul(ah6, bh9)) | 0;
+    var w15 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w15 >>> 26)) | 0;
+    w15 &= 0x3ffffff;
+    /* k = 16 */
+    lo = Math.imul(al9, bl7);
+    mid = Math.imul(al9, bh7);
+    mid = (mid + Math.imul(ah9, bl7)) | 0;
+    hi = Math.imul(ah9, bh7);
+    lo = (lo + Math.imul(al8, bl8)) | 0;
+    mid = (mid + Math.imul(al8, bh8)) | 0;
+    mid = (mid + Math.imul(ah8, bl8)) | 0;
+    hi = (hi + Math.imul(ah8, bh8)) | 0;
+    lo = (lo + Math.imul(al7, bl9)) | 0;
+    mid = (mid + Math.imul(al7, bh9)) | 0;
+    mid = (mid + Math.imul(ah7, bl9)) | 0;
+    hi = (hi + Math.imul(ah7, bh9)) | 0;
+    var w16 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w16 >>> 26)) | 0;
+    w16 &= 0x3ffffff;
+    /* k = 17 */
+    lo = Math.imul(al9, bl8);
+    mid = Math.imul(al9, bh8);
+    mid = (mid + Math.imul(ah9, bl8)) | 0;
+    hi = Math.imul(ah9, bh8);
+    lo = (lo + Math.imul(al8, bl9)) | 0;
+    mid = (mid + Math.imul(al8, bh9)) | 0;
+    mid = (mid + Math.imul(ah8, bl9)) | 0;
+    hi = (hi + Math.imul(ah8, bh9)) | 0;
+    var w17 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w17 >>> 26)) | 0;
+    w17 &= 0x3ffffff;
+    /* k = 18 */
+    lo = Math.imul(al9, bl9);
+    mid = Math.imul(al9, bh9);
+    mid = (mid + Math.imul(ah9, bl9)) | 0;
+    hi = Math.imul(ah9, bh9);
+    var w18 = (((c + lo) | 0) + ((mid & 0x1fff) << 13)) | 0;
+    c = (((hi + (mid >>> 13)) | 0) + (w18 >>> 26)) | 0;
+    w18 &= 0x3ffffff;
+    o[0] = w0;
+    o[1] = w1;
+    o[2] = w2;
+    o[3] = w3;
+    o[4] = w4;
+    o[5] = w5;
+    o[6] = w6;
+    o[7] = w7;
+    o[8] = w8;
+    o[9] = w9;
+    o[10] = w10;
+    o[11] = w11;
+    o[12] = w12;
+    o[13] = w13;
+    o[14] = w14;
+    o[15] = w15;
+    o[16] = w16;
+    o[17] = w17;
+    o[18] = w18;
+    if (c !== 0) {
+      o[19] = c;
+      out.length++;
     }
-    return nb;
-  }
-  return 0;
-}
+    return out;
+  };
 
-// Validates as many continuation bytes for a multi-byte UTF-8 character as
-// needed or are available. If we see a non-continuation byte where we expect
-// one, we "replace" the validated continuation bytes we've seen so far with
-// UTF-8 replacement characters ('\ufffd'), to match v8's UTF-8 decoding
-// behavior. The continuation byte check is included three times in the case
-// where all of the continuation bytes for a character exist in the same buffer.
-// It is also done this way as a slight performance increase instead of using a
-// loop.
-function utf8CheckExtraBytes(self, buf, p) {
-  if ((buf[0] & 0xC0) !== 0x80) {
-    self.lastNeed = 0;
-    return '\ufffd'.repeat(p);
-  }
-  if (self.lastNeed > 1 && buf.length > 1) {
-    if ((buf[1] & 0xC0) !== 0x80) {
-      self.lastNeed = 1;
-      return '\ufffd'.repeat(p + 1);
-    }
-    if (self.lastNeed > 2 && buf.length > 2) {
-      if ((buf[2] & 0xC0) !== 0x80) {
-        self.lastNeed = 2;
-        return '\ufffd'.repeat(p + 2);
-      }
-    }
+  // Polyfill comb
+  if (!Math.imul) {
+    comb10MulTo = smallMulTo;
   }
-}
 
-// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
-function utf8FillLast(buf) {
-  var p = this.lastTotal - this.lastNeed;
-  var r = utf8CheckExtraBytes(this, buf, p);
-  if (r !== undefined) return r;
-  if (this.lastNeed <= buf.length) {
-    buf.copy(this.lastChar, p, 0, this.lastNeed);
-    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
-  }
-  buf.copy(this.lastChar, p, 0, buf.length);
-  this.lastNeed -= buf.length;
-}
+  function bigMulTo (self, num, out) {
+    out.negative = num.negative ^ self.negative;
+    out.length = self.length + num.length;
 
-// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
-// partial character, the character's bytes are buffered until the required
-// number of bytes are available.
-function utf8Text(buf, i) {
-  var total = utf8CheckIncomplete(this, buf, i);
-  if (!this.lastNeed) return buf.toString('utf8', i);
-  this.lastTotal = total;
-  var end = buf.length - (total - this.lastNeed);
-  buf.copy(this.lastChar, 0, end);
-  return buf.toString('utf8', i, end);
-}
+    var carry = 0;
+    var hncarry = 0;
+    for (var k = 0; k < out.length - 1; k++) {
+      // Sum all words with the same `i + j = k` and accumulate `ncarry`,
+      // note that ncarry could be >= 0x3ffffff
+      var ncarry = hncarry;
+      hncarry = 0;
+      var rword = carry & 0x3ffffff;
+      var maxJ = Math.min(k, num.length - 1);
+      for (var j = Math.max(0, k - self.length + 1); j <= maxJ; j++) {
+        var i = k - j;
+        var a = self.words[i] | 0;
+        var b = num.words[j] | 0;
+        var r = a * b;
 
-// For UTF-8, a replacement character for each buffered byte of a (partial)
-// character needs to be added to the output.
-function utf8End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) return r + '\ufffd'.repeat(this.lastTotal - this.lastNeed);
-  return r;
-}
+        var lo = r & 0x3ffffff;
+        ncarry = (ncarry + ((r / 0x4000000) | 0)) | 0;
+        lo = (lo + rword) | 0;
+        rword = lo & 0x3ffffff;
+        ncarry = (ncarry + (lo >>> 26)) | 0;
 
-// UTF-16LE typically needs two bytes per character, but even if we have an even
-// number of bytes available, we need to check if we end on a leading/high
-// surrogate. In that case, we need to wait for the next two bytes in order to
-// decode the last character properly.
-function utf16Text(buf, i) {
-  if ((buf.length - i) % 2 === 0) {
-    var r = buf.toString('utf16le', i);
-    if (r) {
-      var c = r.charCodeAt(r.length - 1);
-      if (c >= 0xD800 && c <= 0xDBFF) {
-        this.lastNeed = 2;
-        this.lastTotal = 4;
-        this.lastChar[0] = buf[buf.length - 2];
-        this.lastChar[1] = buf[buf.length - 1];
-        return r.slice(0, -1);
+        hncarry += ncarry >>> 26;
+        ncarry &= 0x3ffffff;
       }
+      out.words[k] = rword;
+      carry = ncarry;
+      ncarry = hncarry;
     }
-    return r;
-  }
-  this.lastNeed = 1;
-  this.lastTotal = 2;
-  this.lastChar[0] = buf[buf.length - 1];
-  return buf.toString('utf16le', i, buf.length - 1);
-}
-
-// For UTF-16LE we do not explicitly append special replacement characters if we
-// end on a partial character, we simply let v8 handle that.
-function utf16End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) {
-    var end = this.lastTotal - this.lastNeed;
-    return r + this.lastChar.toString('utf16le', 0, end);
-  }
-  return r;
-}
-
-function base64Text(buf, i) {
-  var n = (buf.length - i) % 3;
-  if (n === 0) return buf.toString('base64', i);
-  this.lastNeed = 3 - n;
-  this.lastTotal = 3;
-  if (n === 1) {
-    this.lastChar[0] = buf[buf.length - 1];
-  } else {
-    this.lastChar[0] = buf[buf.length - 2];
-    this.lastChar[1] = buf[buf.length - 1];
-  }
-  return buf.toString('base64', i, buf.length - n);
-}
-
-function base64End(buf) {
-  var r = buf && buf.length ? this.write(buf) : '';
-  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
-  return r;
-}
-
-// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
-function simpleWrite(buf) {
-  return buf.toString(this.encoding);
-}
-
-function simpleEnd(buf) {
-  return buf && buf.length ? this.write(buf) : '';
-}
-},{"safe-buffer":26}],29:[function(require,module,exports){
-(function (global){
-
-/**
- * Module exports.
- */
-
-module.exports = deprecate;
-
-/**
- * Mark that a method should not be used.
- * Returns a modified function which warns once by default.
- *
- * If `localStorage.noDeprecation = true` is set, then it is a no-op.
- *
- * If `localStorage.throwDeprecation = true` is set, then deprecated functions
- * will throw an Error when invoked.
- *
- * If `localStorage.traceDeprecation = true` is set, then deprecated functions
- * will invoke `console.trace()` instead of `console.error()`.
- *
- * @param {Function} fn - the function to deprecate
- * @param {String} msg - the string to print to the console when `fn` is invoked
- * @returns {Function} a new "deprecated" version of `fn`
- * @api public
- */
-
-function deprecate (fn, msg) {
-  if (config('noDeprecation')) {
-    return fn;
-  }
-
-  var warned = false;
-  function deprecated() {
-    if (!warned) {
-      if (config('throwDeprecation')) {
-        throw new Error(msg);
-      } else if (config('traceDeprecation')) {
-        console.trace(msg);
-      } else {
-        console.warn(msg);
-      }
-      warned = true;
+    if (carry !== 0) {
+      out.words[k] = carry;
+    } else {
+      out.length--;
     }
-    return fn.apply(this, arguments);
-  }
-
-  return deprecated;
-}
-
-/**
- * Checks `localStorage` for boolean values for the given `name`.
- *
- * @param {String} name
- * @returns {Boolean}
- * @api private
- */
 
-function config (name) {
-  // accessing global.localStorage can trigger a DOMException in sandboxed iframes
-  try {
-    if (!global.localStorage) return false;
-  } catch (_) {
-    return false;
+    return out.strip();
   }
-  var val = global.localStorage[name];
-  if (null == val) return false;
-  return String(val).toLowerCase() === 'true';
-}
-
-}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{}],30:[function(require,module,exports){
-arguments[4][8][0].apply(exports,arguments)
-},{"dup":8}],31:[function(require,module,exports){
-module.exports = function isBuffer(arg) {
-  return arg && typeof arg === 'object'
-    && typeof arg.copy === 'function'
-    && typeof arg.fill === 'function'
-    && typeof arg.readUInt8 === 'function';
-}
-},{}],32:[function(require,module,exports){
-(function (process,global){
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-var formatRegExp = /%[sdj%]/g;
-exports.format = function(f) {
-  if (!isString(f)) {
-    var objects = [];
-    for (var i = 0; i < arguments.length; i++) {
-      objects.push(inspect(arguments[i]));
-    }
-    return objects.join(' ');
+  function jumboMulTo (self, num, out) {
+    var fftm = new FFTM();
+    return fftm.mulp(self, num, out);
   }
 
-  var i = 1;
-  var args = arguments;
-  var len = args.length;
-  var str = String(f).replace(formatRegExp, function(x) {
-    if (x === '%%') return '%';
-    if (i >= len) return x;
-    switch (x) {
-      case '%s': return String(args[i++]);
-      case '%d': return Number(args[i++]);
-      case '%j':
-        try {
-          return JSON.stringify(args[i++]);
-        } catch (_) {
-          return '[Circular]';
-        }
-      default:
-        return x;
-    }
-  });
-  for (var x = args[i]; i < len; x = args[++i]) {
-    if (isNull(x) || !isObject(x)) {
-      str += ' ' + x;
+  BN.prototype.mulTo = function mulTo (num, out) {
+    var res;
+    var len = this.length + num.length;
+    if (this.length === 10 && num.length === 10) {
+      res = comb10MulTo(this, num, out);
+    } else if (len < 63) {
+      res = smallMulTo(this, num, out);
+    } else if (len < 1024) {
+      res = bigMulTo(this, num, out);
     } else {
-      str += ' ' + inspect(x);
-    }
-  }
-  return str;
-};
-
-
-// Mark that a method should not be used.
-// Returns a modified function which warns once by default.
-// If --no-deprecation is set, then it is a no-op.
-exports.deprecate = function(fn, msg) {
-  // Allow for deprecating things in the process of starting up.
-  if (isUndefined(global.process)) {
-    return function() {
-      return exports.deprecate(fn, msg).apply(this, arguments);
-    };
-  }
+      res = jumboMulTo(this, num, out);
+    }
 
-  if (process.noDeprecation === true) {
-    return fn;
+    return res;
+  };
+
+  // Cooley-Tukey algorithm for FFT
+  // slightly revisited to rely on looping instead of recursion
+
+  function FFTM (x, y) {
+    this.x = x;
+    this.y = y;
   }
 
-  var warned = false;
-  function deprecated() {
-    if (!warned) {
-      if (process.throwDeprecation) {
-        throw new Error(msg);
-      } else if (process.traceDeprecation) {
-        console.trace(msg);
-      } else {
-        console.error(msg);
-      }
-      warned = true;
+  FFTM.prototype.makeRBT = function makeRBT (N) {
+    var t = new Array(N);
+    var l = BN.prototype._countBits(N) - 1;
+    for (var i = 0; i < N; i++) {
+      t[i] = this.revBin(i, l, N);
     }
-    return fn.apply(this, arguments);
-  }
 
-  return deprecated;
-};
+    return t;
+  };
 
+  // Returns binary-reversed representation of `x`
+  FFTM.prototype.revBin = function revBin (x, l, N) {
+    if (x === 0 || x === N - 1) return x;
 
-var debugs = {};
-var debugEnviron;
-exports.debuglog = function(set) {
-  if (isUndefined(debugEnviron))
-    debugEnviron = process.env.NODE_DEBUG || '';
-  set = set.toUpperCase();
-  if (!debugs[set]) {
-    if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
-      var pid = process.pid;
-      debugs[set] = function() {
-        var msg = exports.format.apply(exports, arguments);
-        console.error('%s %d: %s', set, pid, msg);
-      };
-    } else {
-      debugs[set] = function() {};
+    var rb = 0;
+    for (var i = 0; i < l; i++) {
+      rb |= (x & 1) << (l - i - 1);
+      x >>= 1;
     }
-  }
-  return debugs[set];
-};
 
-
-/**
- * Echos the value of a value. Trys to print the value out
- * in the best way possible given the different types.
- *
- * @param {Object} obj The object to print out.
- * @param {Object} opts Optional options object that alters the output.
- */
-/* legacy: obj, showHidden, depth, colors*/
-function inspect(obj, opts) {
-  // default options
-  var ctx = {
-    seen: [],
-    stylize: stylizeNoColor
+    return rb;
   };
-  // legacy...
-  if (arguments.length >= 3) ctx.depth = arguments[2];
-  if (arguments.length >= 4) ctx.colors = arguments[3];
-  if (isBoolean(opts)) {
-    // legacy...
-    ctx.showHidden = opts;
-  } else if (opts) {
-    // got an "options" object
-    exports._extend(ctx, opts);
-  }
-  // set default options
-  if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
-  if (isUndefined(ctx.depth)) ctx.depth = 2;
-  if (isUndefined(ctx.colors)) ctx.colors = false;
-  if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
-  if (ctx.colors) ctx.stylize = stylizeWithColor;
-  return formatValue(ctx, obj, ctx.depth);
-}
-exports.inspect = inspect;
 
+  // Performs "tweedling" phase, therefore 'emulating'
+  // behaviour of the recursive algorithm
+  FFTM.prototype.permute = function permute (rbt, rws, iws, rtws, itws, N) {
+    for (var i = 0; i < N; i++) {
+      rtws[i] = rws[rbt[i]];
+      itws[i] = iws[rbt[i]];
+    }
+  };
 
-// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
-inspect.colors = {
-  'bold' : [1, 22],
-  'italic' : [3, 23],
-  'underline' : [4, 24],
-  'inverse' : [7, 27],
-  'white' : [37, 39],
-  'grey' : [90, 39],
-  'black' : [30, 39],
-  'blue' : [34, 39],
-  'cyan' : [36, 39],
-  'green' : [32, 39],
-  'magenta' : [35, 39],
-  'red' : [31, 39],
-  'yellow' : [33, 39]
-};
+  FFTM.prototype.transform = function transform (rws, iws, rtws, itws, N, rbt) {
+    this.permute(rbt, rws, iws, rtws, itws, N);
 
-// Don't use 'blue' not visible on cmd.exe
-inspect.styles = {
-  'special': 'cyan',
-  'number': 'yellow',
-  'boolean': 'yellow',
-  'undefined': 'grey',
-  'null': 'bold',
-  'string': 'green',
-  'date': 'magenta',
-  // "name": intentionally not styling
-  'regexp': 'red'
-};
+    for (var s = 1; s < N; s <<= 1) {
+      var l = s << 1;
 
+      var rtwdf = Math.cos(2 * Math.PI / l);
+      var itwdf = Math.sin(2 * Math.PI / l);
 
-function stylizeWithColor(str, styleType) {
-  var style = inspect.styles[styleType];
+      for (var p = 0; p < N; p += l) {
+        var rtwdf_ = rtwdf;
+        var itwdf_ = itwdf;
 
-  if (style) {
-    return '\u001b[' + inspect.colors[style][0] + 'm' + str +
-           '\u001b[' + inspect.colors[style][1] + 'm';
-  } else {
-    return str;
-  }
-}
+        for (var j = 0; j < s; j++) {
+          var re = rtws[p + j];
+          var ie = itws[p + j];
 
+          var ro = rtws[p + j + s];
+          var io = itws[p + j + s];
 
-function stylizeNoColor(str, styleType) {
-  return str;
-}
+          var rx = rtwdf_ * ro - itwdf_ * io;
 
+          io = rtwdf_ * io + itwdf_ * ro;
+          ro = rx;
 
-function arrayToHash(array) {
-  var hash = {};
+          rtws[p + j] = re + ro;
+          itws[p + j] = ie + io;
 
-  array.forEach(function(val, idx) {
-    hash[val] = true;
-  });
+          rtws[p + j + s] = re - ro;
+          itws[p + j + s] = ie - io;
 
-  return hash;
-}
+          /* jshint maxdepth : false */
+          if (j !== l) {
+            rx = rtwdf * rtwdf_ - itwdf * itwdf_;
 
+            itwdf_ = rtwdf * itwdf_ + itwdf * rtwdf_;
+            rtwdf_ = rx;
+          }
+        }
+      }
+    }
+  };
 
-function formatValue(ctx, value, recurseTimes) {
-  // Provide a hook for user-specified inspect functions.
-  // Check that value is an object with an inspect function on it
-  if (ctx.customInspect &&
-      value &&
-      isFunction(value.inspect) &&
-      // Filter out the util module, it's inspect function is special
-      value.inspect !== exports.inspect &&
-      // Also filter out any prototype objects using the circular check.
-      !(value.constructor && value.constructor.prototype === value)) {
-    var ret = value.inspect(recurseTimes, ctx);
-    if (!isString(ret)) {
-      ret = formatValue(ctx, ret, recurseTimes);
+  FFTM.prototype.guessLen13b = function guessLen13b (n, m) {
+    var N = Math.max(m, n) | 1;
+    var odd = N & 1;
+    var i = 0;
+    for (N = N / 2 | 0; N; N = N >>> 1) {
+      i++;
     }
-    return ret;
-  }
 
-  // Primitive types cannot have properties
-  var primitive = formatPrimitive(ctx, value);
-  if (primitive) {
-    return primitive;
-  }
+    return 1 << i + 1 + odd;
+  };
 
-  // Look up the keys of the object.
-  var keys = Object.keys(value);
-  var visibleKeys = arrayToHash(keys);
+  FFTM.prototype.conjugate = function conjugate (rws, iws, N) {
+    if (N <= 1) return;
 
-  if (ctx.showHidden) {
-    keys = Object.getOwnPropertyNames(value);
-  }
+    for (var i = 0; i < N / 2; i++) {
+      var t = rws[i];
 
-  // IE doesn't make error fields non-enumerable
-  // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
-  if (isError(value)
-      && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
-    return formatError(value);
-  }
+      rws[i] = rws[N - i - 1];
+      rws[N - i - 1] = t;
 
-  // Some type of object without properties can be shortcutted.
-  if (keys.length === 0) {
-    if (isFunction(value)) {
-      var name = value.name ? ': ' + value.name : '';
-      return ctx.stylize('[Function' + name + ']', 'special');
-    }
-    if (isRegExp(value)) {
-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
-    }
-    if (isDate(value)) {
-      return ctx.stylize(Date.prototype.toString.call(value), 'date');
-    }
-    if (isError(value)) {
-      return formatError(value);
+      t = iws[i];
+
+      iws[i] = -iws[N - i - 1];
+      iws[N - i - 1] = -t;
     }
-  }
+  };
 
-  var base = '', array = false, braces = ['{', '}'];
+  FFTM.prototype.normalize13b = function normalize13b (ws, N) {
+    var carry = 0;
+    for (var i = 0; i < N / 2; i++) {
+      var w = Math.round(ws[2 * i + 1] / N) * 0x2000 +
+        Math.round(ws[2 * i] / N) +
+        carry;
 
-  // Make Array say that they are Array
-  if (isArray(value)) {
-    array = true;
-    braces = ['[', ']'];
-  }
+      ws[i] = w & 0x3ffffff;
 
-  // Make functions say that they are functions
-  if (isFunction(value)) {
-    var n = value.name ? ': ' + value.name : '';
-    base = ' [Function' + n + ']';
-  }
+      if (w < 0x4000000) {
+        carry = 0;
+      } else {
+        carry = w / 0x4000000 | 0;
+      }
+    }
 
-  // Make RegExps say that they are RegExps
-  if (isRegExp(value)) {
-    base = ' ' + RegExp.prototype.toString.call(value);
-  }
+    return ws;
+  };
 
-  // Make dates with properties first say the date
-  if (isDate(value)) {
-    base = ' ' + Date.prototype.toUTCString.call(value);
-  }
+  FFTM.prototype.convert13b = function convert13b (ws, len, rws, N) {
+    var carry = 0;
+    for (var i = 0; i < len; i++) {
+      carry = carry + (ws[i] | 0);
 
-  // Make error with message first say the error
-  if (isError(value)) {
-    base = ' ' + formatError(value);
-  }
+      rws[2 * i] = carry & 0x1fff; carry = carry >>> 13;
+      rws[2 * i + 1] = carry & 0x1fff; carry = carry >>> 13;
+    }
 
-  if (keys.length === 0 && (!array || value.length == 0)) {
-    return braces[0] + base + braces[1];
-  }
+    // Pad with zeroes
+    for (i = 2 * len; i < N; ++i) {
+      rws[i] = 0;
+    }
 
-  if (recurseTimes < 0) {
-    if (isRegExp(value)) {
-      return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
-    } else {
-      return ctx.stylize('[Object]', 'special');
+    assert(carry === 0);
+    assert((carry & ~0x1fff) === 0);
+  };
+
+  FFTM.prototype.stub = function stub (N) {
+    var ph = new Array(N);
+    for (var i = 0; i < N; i++) {
+      ph[i] = 0;
     }
-  }
 
-  ctx.seen.push(value);
+    return ph;
+  };
 
-  var output;
-  if (array) {
-    output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
-  } else {
-    output = keys.map(function(key) {
-      return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
-    });
-  }
+  FFTM.prototype.mulp = function mulp (x, y, out) {
+    var N = 2 * this.guessLen13b(x.length, y.length);
 
-  ctx.seen.pop();
+    var rbt = this.makeRBT(N);
 
-  return reduceToSingleString(output, base, braces);
-}
+    var _ = this.stub(N);
 
+    var rws = new Array(N);
+    var rwst = new Array(N);
+    var iwst = new Array(N);
 
-function formatPrimitive(ctx, value) {
-  if (isUndefined(value))
-    return ctx.stylize('undefined', 'undefined');
-  if (isString(value)) {
-    var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
-                                             .replace(/'/g, "\\'")
-                                             .replace(/\\"/g, '"') + '\'';
-    return ctx.stylize(simple, 'string');
-  }
-  if (isNumber(value))
-    return ctx.stylize('' + value, 'number');
-  if (isBoolean(value))
-    return ctx.stylize('' + value, 'boolean');
-  // For some reason typeof null is "object", so special case here.
-  if (isNull(value))
-    return ctx.stylize('null', 'null');
-}
+    var nrws = new Array(N);
+    var nrwst = new Array(N);
+    var niwst = new Array(N);
 
+    var rmws = out.words;
+    rmws.length = N;
 
-function formatError(value) {
-  return '[' + Error.prototype.toString.call(value) + ']';
-}
+    this.convert13b(x.words, x.length, rws, N);
+    this.convert13b(y.words, y.length, nrws, N);
 
+    this.transform(rws, _, rwst, iwst, N, rbt);
+    this.transform(nrws, _, nrwst, niwst, N, rbt);
 
-function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
-  var output = [];
-  for (var i = 0, l = value.length; i < l; ++i) {
-    if (hasOwnProperty(value, String(i))) {
-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
-          String(i), true));
-    } else {
-      output.push('');
-    }
-  }
-  keys.forEach(function(key) {
-    if (!key.match(/^\d+$/)) {
-      output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
-          key, true));
+    for (var i = 0; i < N; i++) {
+      var rx = rwst[i] * nrwst[i] - iwst[i] * niwst[i];
+      iwst[i] = rwst[i] * niwst[i] + iwst[i] * nrwst[i];
+      rwst[i] = rx;
     }
-  });
-  return output;
-}
 
+    this.conjugate(rwst, iwst, N);
+    this.transform(rwst, iwst, rmws, _, N, rbt);
+    this.conjugate(rmws, _, N);
+    this.normalize13b(rmws, N);
+
+    out.negative = x.negative ^ y.negative;
+    out.length = x.length + y.length;
+    return out.strip();
+  };
 
-function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
-  var name, str, desc;
-  desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
-  if (desc.get) {
-    if (desc.set) {
-      str = ctx.stylize('[Getter/Setter]', 'special');
-    } else {
-      str = ctx.stylize('[Getter]', 'special');
-    }
-  } else {
-    if (desc.set) {
-      str = ctx.stylize('[Setter]', 'special');
-    }
-  }
-  if (!hasOwnProperty(visibleKeys, key)) {
-    name = '[' + key + ']';
-  }
-  if (!str) {
-    if (ctx.seen.indexOf(desc.value) < 0) {
-      if (isNull(recurseTimes)) {
-        str = formatValue(ctx, desc.value, null);
-      } else {
-        str = formatValue(ctx, desc.value, recurseTimes - 1);
-      }
-      if (str.indexOf('\n') > -1) {
-        if (array) {
-          str = str.split('\n').map(function(line) {
-            return '  ' + line;
-          }).join('\n').substr(2);
-        } else {
-          str = '\n' + str.split('\n').map(function(line) {
-            return '   ' + line;
-          }).join('\n');
-        }
-      }
-    } else {
-      str = ctx.stylize('[Circular]', 'special');
-    }
-  }
-  if (isUndefined(name)) {
-    if (array && key.match(/^\d+$/)) {
-      return str;
-    }
-    name = JSON.stringify('' + key);
-    if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
-      name = name.substr(1, name.length - 2);
-      name = ctx.stylize(name, 'name');
-    } else {
-      name = name.replace(/'/g, "\\'")
-                 .replace(/\\"/g, '"')
-                 .replace(/(^"|"$)/g, "'");
-      name = ctx.stylize(name, 'string');
-    }
-  }
+  // Multiply `this` by `num`
+  BN.prototype.mul = function mul (num) {
+    var out = new BN(null);
+    out.words = new Array(this.length + num.length);
+    return this.mulTo(num, out);
+  };
 
-  return name + ': ' + str;
-}
+  // Multiply employing FFT
+  BN.prototype.mulf = function mulf (num) {
+    var out = new BN(null);
+    out.words = new Array(this.length + num.length);
+    return jumboMulTo(this, num, out);
+  };
 
+  // In-place Multiplication
+  BN.prototype.imul = function imul (num) {
+    return this.clone().mulTo(num, this);
+  };
 
-function reduceToSingleString(output, base, braces) {
-  var numLinesEst = 0;
-  var length = output.reduce(function(prev, cur) {
-    numLinesEst++;
-    if (cur.indexOf('\n') >= 0) numLinesEst++;
-    return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
-  }, 0);
+  BN.prototype.imuln = function imuln (num) {
+    assert(typeof num === 'number');
+    assert(num < 0x4000000);
 
-  if (length > 60) {
-    return braces[0] +
-           (base === '' ? '' : base + '\n ') +
-           ' ' +
-           output.join(',\n  ') +
-           ' ' +
-           braces[1];
-  }
+    // Carry
+    var carry = 0;
+    for (var i = 0; i < this.length; i++) {
+      var w = (this.words[i] | 0) * num;
+      var lo = (w & 0x3ffffff) + (carry & 0x3ffffff);
+      carry >>= 26;
+      carry += (w / 0x4000000) | 0;
+      // NOTE: lo is 27bit maximum
+      carry += lo >>> 26;
+      this.words[i] = lo & 0x3ffffff;
+    }
 
-  return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
-}
+    if (carry !== 0) {
+      this.words[i] = carry;
+      this.length++;
+    }
 
+    return this;
+  };
 
-// NOTE: These type checking functions intentionally don't use `instanceof`
-// because it is fragile and can be easily faked with `Object.create()`.
-function isArray(ar) {
-  return Array.isArray(ar);
-}
-exports.isArray = isArray;
+  BN.prototype.muln = function muln (num) {
+    return this.clone().imuln(num);
+  };
+
+  // `this` * `this`
+  BN.prototype.sqr = function sqr () {
+    return this.mul(this);
+  };
 
-function isBoolean(arg) {
-  return typeof arg === 'boolean';
-}
-exports.isBoolean = isBoolean;
+  // `this` * `this` in-place
+  BN.prototype.isqr = function isqr () {
+    return this.imul(this.clone());
+  };
 
-function isNull(arg) {
-  return arg === null;
-}
-exports.isNull = isNull;
+  // Math.pow(`this`, `num`)
+  BN.prototype.pow = function pow (num) {
+    var w = toBitArray(num);
+    if (w.length === 0) return new BN(1);
 
-function isNullOrUndefined(arg) {
-  return arg == null;
-}
-exports.isNullOrUndefined = isNullOrUndefined;
+    // Skip leading zeroes
+    var res = this;
+    for (var i = 0; i < w.length; i++, res = res.sqr()) {
+      if (w[i] !== 0) break;
+    }
 
-function isNumber(arg) {
-  return typeof arg === 'number';
-}
-exports.isNumber = isNumber;
+    if (++i < w.length) {
+      for (var q = res.sqr(); i < w.length; i++, q = q.sqr()) {
+        if (w[i] === 0) continue;
 
-function isString(arg) {
-  return typeof arg === 'string';
-}
-exports.isString = isString;
+        res = res.mul(q);
+      }
+    }
 
-function isSymbol(arg) {
-  return typeof arg === 'symbol';
-}
-exports.isSymbol = isSymbol;
+    return res;
+  };
 
-function isUndefined(arg) {
-  return arg === void 0;
-}
-exports.isUndefined = isUndefined;
+  // Shift-left in-place
+  BN.prototype.iushln = function iushln (bits) {
+    assert(typeof bits === 'number' && bits >= 0);
+    var r = bits % 26;
+    var s = (bits - r) / 26;
+    var carryMask = (0x3ffffff >>> (26 - r)) << (26 - r);
+    var i;
 
-function isRegExp(re) {
-  return isObject(re) && objectToString(re) === '[object RegExp]';
-}
-exports.isRegExp = isRegExp;
+    if (r !== 0) {
+      var carry = 0;
 
-function isObject(arg) {
-  return typeof arg === 'object' && arg !== null;
-}
-exports.isObject = isObject;
+      for (i = 0; i < this.length; i++) {
+        var newCarry = this.words[i] & carryMask;
+        var c = ((this.words[i] | 0) - newCarry) << r;
+        this.words[i] = c | carry;
+        carry = newCarry >>> (26 - r);
+      }
 
-function isDate(d) {
-  return isObject(d) && objectToString(d) === '[object Date]';
-}
-exports.isDate = isDate;
+      if (carry) {
+        this.words[i] = carry;
+        this.length++;
+      }
+    }
 
-function isError(e) {
-  return isObject(e) &&
-      (objectToString(e) === '[object Error]' || e instanceof Error);
-}
-exports.isError = isError;
+    if (s !== 0) {
+      for (i = this.length - 1; i >= 0; i--) {
+        this.words[i + s] = this.words[i];
+      }
 
-function isFunction(arg) {
-  return typeof arg === 'function';
-}
-exports.isFunction = isFunction;
+      for (i = 0; i < s; i++) {
+        this.words[i] = 0;
+      }
 
-function isPrimitive(arg) {
-  return arg === null ||
-         typeof arg === 'boolean' ||
-         typeof arg === 'number' ||
-         typeof arg === 'string' ||
-         typeof arg === 'symbol' ||  // ES6 symbol
-         typeof arg === 'undefined';
-}
-exports.isPrimitive = isPrimitive;
+      this.length += s;
+    }
 
-exports.isBuffer = require('./support/isBuffer');
+    return this.strip();
+  };
 
-function objectToString(o) {
-  return Object.prototype.toString.call(o);
-}
+  BN.prototype.ishln = function ishln (bits) {
+    // TODO(indutny): implement me
+    assert(this.negative === 0);
+    return this.iushln(bits);
+  };
 
+  // Shift-right in-place
+  // NOTE: `hint` is a lowest bit before trailing zeroes
+  // NOTE: if `extended` is present - it will be filled with destroyed bits
+  BN.prototype.iushrn = function iushrn (bits, hint, extended) {
+    assert(typeof bits === 'number' && bits >= 0);
+    var h;
+    if (hint) {
+      h = (hint - (hint % 26)) / 26;
+    } else {
+      h = 0;
+    }
 
-function pad(n) {
-  return n < 10 ? '0' + n.toString(10) : n.toString(10);
-}
+    var r = bits % 26;
+    var s = Math.min((bits - r) / 26, this.length);
+    var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+    var maskedWords = extended;
 
+    h -= s;
+    h = Math.max(0, h);
 
-var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
-              'Oct', 'Nov', 'Dec'];
+    // Extended mode, copy masked part
+    if (maskedWords) {
+      for (var i = 0; i < s; i++) {
+        maskedWords.words[i] = this.words[i];
+      }
+      maskedWords.length = s;
+    }
 
-// 26 Feb 16:19:34
-function timestamp() {
-  var d = new Date();
-  var time = [pad(d.getHours()),
-              pad(d.getMinutes()),
-              pad(d.getSeconds())].join(':');
-  return [d.getDate(), months[d.getMonth()], time].join(' ');
-}
+    if (s === 0) {
+      // No-op, we should not move anything at all
+    } else if (this.length > s) {
+      this.length -= s;
+      for (i = 0; i < this.length; i++) {
+        this.words[i] = this.words[i + s];
+      }
+    } else {
+      this.words[0] = 0;
+      this.length = 1;
+    }
 
+    var carry = 0;
+    for (i = this.length - 1; i >= 0 && (carry !== 0 || i >= h); i--) {
+      var word = this.words[i] | 0;
+      this.words[i] = (carry << (26 - r)) | (word >>> r);
+      carry = word & mask;
+    }
 
-// log is just a thin wrapper to console.log that prepends a timestamp
-exports.log = function() {
-  console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
-};
+    // Push carried bits as a mask
+    if (maskedWords && carry !== 0) {
+      maskedWords.words[maskedWords.length++] = carry;
+    }
 
+    if (this.length === 0) {
+      this.words[0] = 0;
+      this.length = 1;
+    }
 
-/**
- * Inherit the prototype methods from one constructor into another.
- *
- * The Function.prototype.inherits from lang.js rewritten as a standalone
- * function (not on Function.prototype). NOTE: If this file is to be loaded
- * during bootstrapping this function needs to be rewritten using some native
- * functions as prototype setup using normal JavaScript does not work as
- * expected during bootstrapping (see mirror.js in r114903).
- *
- * @param {function} ctor Constructor function which needs to inherit the
- *     prototype.
- * @param {function} superCtor Constructor function to inherit prototype from.
- */
-exports.inherits = require('inherits');
+    return this.strip();
+  };
 
-exports._extend = function(origin, add) {
-  // Don't do anything if add isn't an object
-  if (!add || !isObject(add)) return origin;
+  BN.prototype.ishrn = function ishrn (bits, hint, extended) {
+    // TODO(indutny): implement me
+    assert(this.negative === 0);
+    return this.iushrn(bits, hint, extended);
+  };
 
-  var keys = Object.keys(add);
-  var i = keys.length;
-  while (i--) {
-    origin[keys[i]] = add[keys[i]];
-  }
-  return origin;
-};
+  // Shift-left
+  BN.prototype.shln = function shln (bits) {
+    return this.clone().ishln(bits);
+  };
 
-function hasOwnProperty(obj, prop) {
-  return Object.prototype.hasOwnProperty.call(obj, prop);
-}
+  BN.prototype.ushln = function ushln (bits) {
+    return this.clone().iushln(bits);
+  };
 
-}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"./support/isBuffer":31,"_process":12,"inherits":30}],33:[function(require,module,exports){
-module.exports = {
-      base58: require('bs58'),
-      bitcoin: require('bitcoinjs-lib'),
-      ecurve: require('ecurve'),
-      BigInteger: require('bigi')
-}
+  // Shift-right
+  BN.prototype.shrn = function shrn (bits) {
+    return this.clone().ishrn(bits);
+  };
 
-},{"bigi":37,"bitcoinjs-lib":50,"bs58":79,"ecurve":89}],34:[function(require,module,exports){
-// base-x encoding
-// Forked from https://github.com/cryptocoinjs/bs58
-// Originally written by Mike Hearn for BitcoinJ
-// Copyright (c) 2011 Google Inc
-// Ported to JavaScript by Stefan Thomas
-// Merged Buffer refactorings from base58-native by Stephen Pair
-// Copyright (c) 2013 BitPay Inc
+  BN.prototype.ushrn = function ushrn (bits) {
+    return this.clone().iushrn(bits);
+  };
 
-var Buffer = require('safe-buffer').Buffer
+  // Test if n bit is set
+  BN.prototype.testn = function testn (bit) {
+    assert(typeof bit === 'number' && bit >= 0);
+    var r = bit % 26;
+    var s = (bit - r) / 26;
+    var q = 1 << r;
 
-module.exports = function base (ALPHABET) {
-  var ALPHABET_MAP = {}
-  var BASE = ALPHABET.length
-  var LEADER = ALPHABET.charAt(0)
+    // Fast case: bit is much higher than all existing words
+    if (this.length <= s) return false;
 
-  // pre-compute lookup table
-  for (var z = 0; z < ALPHABET.length; z++) {
-    var x = ALPHABET.charAt(z)
+    // Check bit and return
+    var w = this.words[s];
 
-    if (ALPHABET_MAP[x] !== undefined) throw new TypeError(x + ' is ambiguous')
-    ALPHABET_MAP[x] = z
-  }
+    return !!(w & q);
+  };
 
-  function encode (source) {
-    if (source.length === 0) return ''
+  // Return only lowers bits of number (in-place)
+  BN.prototype.imaskn = function imaskn (bits) {
+    assert(typeof bits === 'number' && bits >= 0);
+    var r = bits % 26;
+    var s = (bits - r) / 26;
 
-    var digits = [0]
-    for (var i = 0; i < source.length; ++i) {
-      for (var j = 0, carry = source[i]; j < digits.length; ++j) {
-        carry += digits[j] << 8
-        digits[j] = carry % BASE
-        carry = (carry / BASE) | 0
-      }
+    assert(this.negative === 0, 'imaskn works only with positive numbers');
 
-      while (carry > 0) {
-        digits.push(carry % BASE)
-        carry = (carry / BASE) | 0
-      }
+    if (this.length <= s) {
+      return this;
     }
 
-    var string = ''
+    if (r !== 0) {
+      s++;
+    }
+    this.length = Math.min(s, this.length);
 
-    // deal with leading zeros
-    for (var k = 0; source[k] === 0 && k < source.length - 1; ++k) string += ALPHABET[0]
-    // convert digits to a string
-    for (var q = digits.length - 1; q >= 0; --q) string += ALPHABET[digits[q]]
+    if (r !== 0) {
+      var mask = 0x3ffffff ^ ((0x3ffffff >>> r) << r);
+      this.words[this.length - 1] &= mask;
+    }
 
-    return string
-  }
+    return this.strip();
+  };
 
-  function decodeUnsafe (string) {
-    if (string.length === 0) return Buffer.allocUnsafe(0)
+  // Return only lowers bits of number
+  BN.prototype.maskn = function maskn (bits) {
+    return this.clone().imaskn(bits);
+  };
 
-    var bytes = [0]
-    for (var i = 0; i < string.length; i++) {
-      var value = ALPHABET_MAP[string[i]]
-      if (value === undefined) return
+  // Add plain number `num` to `this`
+  BN.prototype.iaddn = function iaddn (num) {
+    assert(typeof num === 'number');
+    assert(num < 0x4000000);
+    if (num < 0) return this.isubn(-num);
 
-      for (var j = 0, carry = value; j < bytes.length; ++j) {
-        carry += bytes[j] * BASE
-        bytes[j] = carry & 0xff
-        carry >>= 8
+    // Possible sign change
+    if (this.negative !== 0) {
+      if (this.length === 1 && (this.words[0] | 0) < num) {
+        this.words[0] = num - (this.words[0] | 0);
+        this.negative = 0;
+        return this;
       }
 
-      while (carry > 0) {
-        bytes.push(carry & 0xff)
-        carry >>= 8
-      }
+      this.negative = 0;
+      this.isubn(num);
+      this.negative = 1;
+      return this;
     }
 
-    // deal with leading zeros
-    for (var k = 0; string[k] === LEADER && k < string.length - 1; ++k) {
-      bytes.push(0)
-    }
+    // Add without checks
+    return this._iaddn(num);
+  };
 
-    return Buffer.from(bytes.reverse())
-  }
+  BN.prototype._iaddn = function _iaddn (num) {
+    this.words[0] += num;
 
-  function decode (string) {
-    var buffer = decodeUnsafe(string)
-    if (buffer) return buffer
+    // Carry
+    for (var i = 0; i < this.length && this.words[i] >= 0x4000000; i++) {
+      this.words[i] -= 0x4000000;
+      if (i === this.length - 1) {
+        this.words[i + 1] = 1;
+      } else {
+        this.words[i + 1]++;
+      }
+    }
+    this.length = Math.max(this.length, i + 1);
 
-    throw new Error('Non-base' + BASE + ' character')
-  }
+    return this;
+  };
 
-  return {
-    encode: encode,
-    decodeUnsafe: decodeUnsafe,
-    decode: decode
-  }
-}
+  // Subtract plain number `num` from `this`
+  BN.prototype.isubn = function isubn (num) {
+    assert(typeof num === 'number');
+    assert(num < 0x4000000);
+    if (num < 0) return this.iaddn(-num);
 
-},{"safe-buffer":98}],35:[function(require,module,exports){
-// (public) Constructor
-function BigInteger(a, b, c) {
-  if (!(this instanceof BigInteger))
-    return new BigInteger(a, b, c)
+    if (this.negative !== 0) {
+      this.negative = 0;
+      this.iaddn(num);
+      this.negative = 1;
+      return this;
+    }
 
-  if (a != null) {
-    if ("number" == typeof a) this.fromNumber(a, b, c)
-    else if (b == null && "string" != typeof a) this.fromString(a, 256)
-    else this.fromString(a, b)
-  }
-}
+    this.words[0] -= num;
 
-var proto = BigInteger.prototype
+    if (this.length === 1 && this.words[0] < 0) {
+      this.words[0] = -this.words[0];
+      this.negative = 1;
+    } else {
+      // Carry
+      for (var i = 0; i < this.length && this.words[i] < 0; i++) {
+        this.words[i] += 0x4000000;
+        this.words[i + 1] -= 1;
+      }
+    }
 
-// duck-typed isBigInteger
-proto.__bigi = require('../package.json').version
-BigInteger.isBigInteger = function (obj, check_ver) {
-  return obj && obj.__bigi && (!check_ver || obj.__bigi === proto.__bigi)
-}
+    return this.strip();
+  };
 
-// Bits per digit
-var dbits
+  BN.prototype.addn = function addn (num) {
+    return this.clone().iaddn(num);
+  };
 
-// am: Compute w_j += (x*this_i), propagate carries,
-// c is initial carry, returns final carry.
-// c < 3*dvalue, x < 2*dvalue, this_i < dvalue
-// We need to select the fastest one that works in this environment.
+  BN.prototype.subn = function subn (num) {
+    return this.clone().isubn(num);
+  };
 
-// am1: use a single mult and divide to get the high bits,
-// max digit bits should be 26 because
-// max internal value = 2*dvalue^2-2*dvalue (< 2^53)
-function am1(i, x, w, j, c, n) {
-  while (--n >= 0) {
-    var v = x * this[i++] + w[j] + c
-    c = Math.floor(v / 0x4000000)
-    w[j++] = v & 0x3ffffff
-  }
-  return c
-}
-// am2 avoids a big mult-and-extract completely.
-// Max digit bits should be <= 30 because we do bitwise ops
-// on values up to 2*hdvalue^2-hdvalue-1 (< 2^31)
-function am2(i, x, w, j, c, n) {
-  var xl = x & 0x7fff,
-    xh = x >> 15
-  while (--n >= 0) {
-    var l = this[i] & 0x7fff
-    var h = this[i++] >> 15
-    var m = xh * l + h * xl
-    l = xl * l + ((m & 0x7fff) << 15) + w[j] + (c & 0x3fffffff)
-    c = (l >>> 30) + (m >>> 15) + xh * h + (c >>> 30)
-    w[j++] = l & 0x3fffffff
-  }
-  return c
-}
-// Alternately, set max digit bits to 28 since some
-// browsers slow down when dealing with 32-bit numbers.
-function am3(i, x, w, j, c, n) {
-  var xl = x & 0x3fff,
-    xh = x >> 14
-  while (--n >= 0) {
-    var l = this[i] & 0x3fff
-    var h = this[i++] >> 14
-    var m = xh * l + h * xl
-    l = xl * l + ((m & 0x3fff) << 14) + w[j] + c
-    c = (l >> 28) + (m >> 14) + xh * h
-    w[j++] = l & 0xfffffff
-  }
-  return c
-}
+  BN.prototype.iabs = function iabs () {
+    this.negative = 0;
 
-// wtf?
-BigInteger.prototype.am = am1
-dbits = 26
+    return this;
+  };
 
-BigInteger.prototype.DB = dbits
-BigInteger.prototype.DM = ((1 << dbits) - 1)
-var DV = BigInteger.prototype.DV = (1 << dbits)
+  BN.prototype.abs = function abs () {
+    return this.clone().iabs();
+  };
 
-var BI_FP = 52
-BigInteger.prototype.FV = Math.pow(2, BI_FP)
-BigInteger.prototype.F1 = BI_FP - dbits
-BigInteger.prototype.F2 = 2 * dbits - BI_FP
+  BN.prototype._ishlnsubmul = function _ishlnsubmul (num, mul, shift) {
+    var len = num.length + shift;
+    var i;
 
-// Digit conversions
-var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz"
-var BI_RC = new Array()
-var rr, vv
-rr = "0".charCodeAt(0)
-for (vv = 0; vv <= 9; ++vv) BI_RC[rr++] = vv
-rr = "a".charCodeAt(0)
-for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv
-rr = "A".charCodeAt(0)
-for (vv = 10; vv < 36; ++vv) BI_RC[rr++] = vv
+    this._expand(len);
 
-function int2char(n) {
-  return BI_RM.charAt(n)
-}
+    var w;
+    var carry = 0;
+    for (i = 0; i < num.length; i++) {
+      w = (this.words[i + shift] | 0) + carry;
+      var right = (num.words[i] | 0) * mul;
+      w -= right & 0x3ffffff;
+      carry = (w >> 26) - ((right / 0x4000000) | 0);
+      this.words[i + shift] = w & 0x3ffffff;
+    }
+    for (; i < this.length - shift; i++) {
+      w = (this.words[i + shift] | 0) + carry;
+      carry = w >> 26;
+      this.words[i + shift] = w & 0x3ffffff;
+    }
 
-function intAt(s, i) {
-  var c = BI_RC[s.charCodeAt(i)]
-  return (c == null) ? -1 : c
-}
+    if (carry === 0) return this.strip();
 
-// (protected) copy this to r
-function bnpCopyTo(r) {
-  for (var i = this.t - 1; i >= 0; --i) r[i] = this[i]
-  r.t = this.t
-  r.s = this.s
-}
+    // Subtraction overflow
+    assert(carry === -1);
+    carry = 0;
+    for (i = 0; i < this.length; i++) {
+      w = -(this.words[i] | 0) + carry;
+      carry = w >> 26;
+      this.words[i] = w & 0x3ffffff;
+    }
+    this.negative = 1;
 
-// (protected) set from integer value x, -DV <= x < DV
-function bnpFromInt(x) {
-  this.t = 1
-  this.s = (x < 0) ? -1 : 0
-  if (x > 0) this[0] = x
-  else if (x < -1) this[0] = x + DV
-  else this.t = 0
-}
+    return this.strip();
+  };
 
-// return bigint initialized to value
-function nbv(i) {
-  var r = new BigInteger()
-  r.fromInt(i)
-  return r
-}
+  BN.prototype._wordDiv = function _wordDiv (num, mode) {
+    var shift = this.length - num.length;
 
-// (protected) set from string and radix
-function bnpFromString(s, b) {
-  var self = this
+    var a = this.clone();
+    var b = num;
 
-  var k
-  if (b == 16) k = 4
-  else if (b == 8) k = 3
-  else if (b == 256) k = 8; // byte array
-  else if (b == 2) k = 1
-  else if (b == 32) k = 5
-  else if (b == 4) k = 2
-  else {
-    self.fromRadix(s, b)
-    return
-  }
-  self.t = 0
-  self.s = 0
-  var i = s.length,
-    mi = false,
-    sh = 0
-  while (--i >= 0) {
-    var x = (k == 8) ? s[i] & 0xff : intAt(s, i)
-    if (x < 0) {
-      if (s.charAt(i) == "-") mi = true
-      continue
+    // Normalize
+    var bhi = b.words[b.length - 1] | 0;
+    var bhiBits = this._countBits(bhi);
+    shift = 26 - bhiBits;
+    if (shift !== 0) {
+      b = b.ushln(shift);
+      a.iushln(shift);
+      bhi = b.words[b.length - 1] | 0;
     }
-    mi = false
-    if (sh == 0)
-      self[self.t++] = x
-    else if (sh + k > self.DB) {
-      self[self.t - 1] |= (x & ((1 << (self.DB - sh)) - 1)) << sh
-      self[self.t++] = (x >> (self.DB - sh))
-    } else
-      self[self.t - 1] |= x << sh
-    sh += k
-    if (sh >= self.DB) sh -= self.DB
-  }
-  if (k == 8 && (s[0] & 0x80) != 0) {
-    self.s = -1
-    if (sh > 0) self[self.t - 1] |= ((1 << (self.DB - sh)) - 1) << sh
-  }
-  self.clamp()
-  if (mi) BigInteger.ZERO.subTo(self, self)
-}
 
-// (protected) clamp off excess high words
-function bnpClamp() {
-  var c = this.s & this.DM
-  while (this.t > 0 && this[this.t - 1] == c)--this.t
-}
+    // Initialize quotient
+    var m = a.length - b.length;
+    var q;
 
-// (public) return string representation in given radix
-function bnToString(b) {
-  var self = this
-  if (self.s < 0) return "-" + self.negate()
-    .toString(b)
-  var k
-  if (b == 16) k = 4
-  else if (b == 8) k = 3
-  else if (b == 2) k = 1
-  else if (b == 32) k = 5
-  else if (b == 4) k = 2
-  else return self.toRadix(b)
-  var km = (1 << k) - 1,
-    d, m = false,
-    r = "",
-    i = self.t
-  var p = self.DB - (i * self.DB) % k
-  if (i-- > 0) {
-    if (p < self.DB && (d = self[i] >> p) > 0) {
-      m = true
-      r = int2char(d)
+    if (mode !== 'mod') {
+      q = new BN(null);
+      q.length = m + 1;
+      q.words = new Array(q.length);
+      for (var i = 0; i < q.length; i++) {
+        q.words[i] = 0;
+      }
     }
-    while (i >= 0) {
-      if (p < k) {
-        d = (self[i] & ((1 << p) - 1)) << (k - p)
-        d |= self[--i] >> (p += self.DB - k)
-      } else {
-        d = (self[i] >> (p -= k)) & km
-        if (p <= 0) {
-          p += self.DB
-          --i
+
+    var diff = a.clone()._ishlnsubmul(b, 1, m);
+    if (diff.negative === 0) {
+      a = diff;
+      if (q) {
+        q.words[m] = 1;
+      }
+    }
+
+    for (var j = m - 1; j >= 0; j--) {
+      var qj = (a.words[b.length + j] | 0) * 0x4000000 +
+        (a.words[b.length + j - 1] | 0);
+
+      // NOTE: (qj / bhi) is (0x3ffffff * 0x4000000 + 0x3ffffff) / 0x2000000 max
+      // (0x7ffffff)
+      qj = Math.min((qj / bhi) | 0, 0x3ffffff);
+
+      a._ishlnsubmul(b, qj, j);
+      while (a.negative !== 0) {
+        qj--;
+        a.negative = 0;
+        a._ishlnsubmul(b, 1, j);
+        if (!a.isZero()) {
+          a.negative ^= 1;
         }
       }
-      if (d > 0) m = true
-      if (m) r += int2char(d)
+      if (q) {
+        q.words[j] = qj;
+      }
     }
-  }
-  return m ? r : "0"
-}
+    if (q) {
+      q.strip();
+    }
+    a.strip();
 
-// (public) -this
-function bnNegate() {
-  var r = new BigInteger()
-  BigInteger.ZERO.subTo(this, r)
-  return r
-}
+    // Denormalize
+    if (mode !== 'div' && shift !== 0) {
+      a.iushrn(shift);
+    }
 
-// (public) |this|
-function bnAbs() {
-  return (this.s < 0) ? this.negate() : this
-}
+    return {
+      div: q || null,
+      mod: a
+    };
+  };
 
-// (public) return + if this > a, - if this < a, 0 if equal
-function bnCompareTo(a) {
-  var r = this.s - a.s
-  if (r != 0) return r
-  var i = this.t
-  r = i - a.t
-  if (r != 0) return (this.s < 0) ? -r : r
-  while (--i >= 0)
-    if ((r = this[i] - a[i]) != 0) return r
-  return 0
-}
+  // NOTE: 1) `mode` can be set to `mod` to request mod only,
+  //       to `div` to request div only, or be absent to
+  //       request both div & mod
+  //       2) `positive` is true if unsigned mod is requested
+  BN.prototype.divmod = function divmod (num, mode, positive) {
+    assert(!num.isZero());
 
-// returns bit length of the integer x
-function nbits(x) {
-  var r = 1,
-    t
-  if ((t = x >>> 16) != 0) {
-    x = t
-    r += 16
-  }
-  if ((t = x >> 8) != 0) {
-    x = t
-    r += 8
-  }
-  if ((t = x >> 4) != 0) {
-    x = t
-    r += 4
-  }
-  if ((t = x >> 2) != 0) {
-    x = t
-    r += 2
-  }
-  if ((t = x >> 1) != 0) {
-    x = t
-    r += 1
-  }
-  return r
-}
+    if (this.isZero()) {
+      return {
+        div: new BN(0),
+        mod: new BN(0)
+      };
+    }
 
-// (public) return the number of bits in "this"
-function bnBitLength() {
-  if (this.t <= 0) return 0
-  return this.DB * (this.t - 1) + nbits(this[this.t - 1] ^ (this.s & this.DM))
-}
+    var div, mod, res;
+    if (this.negative !== 0 && num.negative === 0) {
+      res = this.neg().divmod(num, mode);
 
-// (public) return the number of bytes in "this"
-function bnByteLength() {
-  return this.bitLength() >> 3
-}
+      if (mode !== 'mod') {
+        div = res.div.neg();
+      }
 
-// (protected) r = this << n*DB
-function bnpDLShiftTo(n, r) {
-  var i
-  for (i = this.t - 1; i >= 0; --i) r[i + n] = this[i]
-  for (i = n - 1; i >= 0; --i) r[i] = 0
-  r.t = this.t + n
-  r.s = this.s
-}
+      if (mode !== 'div') {
+        mod = res.mod.neg();
+        if (positive && mod.negative !== 0) {
+          mod.iadd(num);
+        }
+      }
 
-// (protected) r = this >> n*DB
-function bnpDRShiftTo(n, r) {
-  for (var i = n; i < this.t; ++i) r[i - n] = this[i]
-  r.t = Math.max(this.t - n, 0)
-  r.s = this.s
-}
+      return {
+        div: div,
+        mod: mod
+      };
+    }
 
-// (protected) r = this << n
-function bnpLShiftTo(n, r) {
-  var self = this
-  var bs = n % self.DB
-  var cbs = self.DB - bs
-  var bm = (1 << cbs) - 1
-  var ds = Math.floor(n / self.DB),
-    c = (self.s << bs) & self.DM,
-    i
-  for (i = self.t - 1; i >= 0; --i) {
-    r[i + ds + 1] = (self[i] >> cbs) | c
-    c = (self[i] & bm) << bs
-  }
-  for (i = ds - 1; i >= 0; --i) r[i] = 0
-  r[ds] = c
-  r.t = self.t + ds + 1
-  r.s = self.s
-  r.clamp()
-}
+    if (this.negative === 0 && num.negative !== 0) {
+      res = this.divmod(num.neg(), mode);
 
-// (protected) r = this >> n
-function bnpRShiftTo(n, r) {
-  var self = this
-  r.s = self.s
-  var ds = Math.floor(n / self.DB)
-  if (ds >= self.t) {
-    r.t = 0
-    return
-  }
-  var bs = n % self.DB
-  var cbs = self.DB - bs
-  var bm = (1 << bs) - 1
-  r[0] = self[ds] >> bs
-  for (var i = ds + 1; i < self.t; ++i) {
-    r[i - ds - 1] |= (self[i] & bm) << cbs
-    r[i - ds] = self[i] >> bs
-  }
-  if (bs > 0) r[self.t - ds - 1] |= (self.s & bm) << cbs
-  r.t = self.t - ds
-  r.clamp()
-}
+      if (mode !== 'mod') {
+        div = res.div.neg();
+      }
 
-// (protected) r = this - a
-function bnpSubTo(a, r) {
-  var self = this
-  var i = 0,
-    c = 0,
-    m = Math.min(a.t, self.t)
-  while (i < m) {
-    c += self[i] - a[i]
-    r[i++] = c & self.DM
-    c >>= self.DB
-  }
-  if (a.t < self.t) {
-    c -= a.s
-    while (i < self.t) {
-      c += self[i]
-      r[i++] = c & self.DM
-      c >>= self.DB
+      return {
+        div: div,
+        mod: res.mod
+      };
     }
-    c += self.s
-  } else {
-    c += self.s
-    while (i < a.t) {
-      c -= a[i]
-      r[i++] = c & self.DM
-      c >>= self.DB
+
+    if ((this.negative & num.negative) !== 0) {
+      res = this.neg().divmod(num.neg(), mode);
+
+      if (mode !== 'div') {
+        mod = res.mod.neg();
+        if (positive && mod.negative !== 0) {
+          mod.isub(num);
+        }
+      }
+
+      return {
+        div: res.div,
+        mod: mod
+      };
     }
-    c -= a.s
-  }
-  r.s = (c < 0) ? -1 : 0
-  if (c < -1) r[i++] = self.DV + c
-  else if (c > 0) r[i++] = c
-  r.t = i
-  r.clamp()
-}
 
-// (protected) r = this * a, r != this,a (HAC 14.12)
-// "this" should be the larger one if appropriate.
-function bnpMultiplyTo(a, r) {
-  var x = this.abs(),
-    y = a.abs()
-  var i = x.t
-  r.t = i + y.t
-  while (--i >= 0) r[i] = 0
-  for (i = 0; i < y.t; ++i) r[i + x.t] = x.am(0, y[i], r, i, 0, x.t)
-  r.s = 0
-  r.clamp()
-  if (this.s != a.s) BigInteger.ZERO.subTo(r, r)
-}
+    // Both numbers are positive at this point
 
-// (protected) r = this^2, r != this (HAC 14.16)
-function bnpSquareTo(r) {
-  var x = this.abs()
-  var i = r.t = 2 * x.t
-  while (--i >= 0) r[i] = 0
-  for (i = 0; i < x.t - 1; ++i) {
-    var c = x.am(i, x[i], r, 2 * i, 0, 1)
-    if ((r[i + x.t] += x.am(i + 1, 2 * x[i], r, 2 * i + 1, c, x.t - i - 1)) >= x.DV) {
-      r[i + x.t] -= x.DV
-      r[i + x.t + 1] = 1
+    // Strip both numbers to approximate shift value
+    if (num.length > this.length || this.cmp(num) < 0) {
+      return {
+        div: new BN(0),
+        mod: this
+      };
     }
-  }
-  if (r.t > 0) r[r.t - 1] += x.am(i, x[i], r, 2 * i, 0, 1)
-  r.s = 0
-  r.clamp()
-}
 
-// (protected) divide this by m, quotient and remainder to q, r (HAC 14.20)
-// r != q, this != m.  q or r may be null.
-function bnpDivRemTo(m, q, r) {
-  var self = this
-  var pm = m.abs()
-  if (pm.t <= 0) return
-  var pt = self.abs()
-  if (pt.t < pm.t) {
-    if (q != null) q.fromInt(0)
-    if (r != null) self.copyTo(r)
-    return
-  }
-  if (r == null) r = new BigInteger()
-  var y = new BigInteger(),
-    ts = self.s,
-    ms = m.s
-  var nsh = self.DB - nbits(pm[pm.t - 1]); // normalize modulus
-  if (nsh > 0) {
-    pm.lShiftTo(nsh, y)
-    pt.lShiftTo(nsh, r)
-  } else {
-    pm.copyTo(y)
-    pt.copyTo(r)
-  }
-  var ys = y.t
-  var y0 = y[ys - 1]
-  if (y0 == 0) return
-  var yt = y0 * (1 << self.F1) + ((ys > 1) ? y[ys - 2] >> self.F2 : 0)
-  var d1 = self.FV / yt,
-    d2 = (1 << self.F1) / yt,
-    e = 1 << self.F2
-  var i = r.t,
-    j = i - ys,
-    t = (q == null) ? new BigInteger() : q
-  y.dlShiftTo(j, t)
-  if (r.compareTo(t) >= 0) {
-    r[r.t++] = 1
-    r.subTo(t, r)
-  }
-  BigInteger.ONE.dlShiftTo(ys, t)
-  t.subTo(y, y); // "negative" y so we can replace sub with am later
-  while (y.t < ys) y[y.t++] = 0
-  while (--j >= 0) {
-    // Estimate quotient digit
-    var qd = (r[--i] == y0) ? self.DM : Math.floor(r[i] * d1 + (r[i - 1] + e) * d2)
-    if ((r[i] += y.am(0, qd, r, j, 0, ys)) < qd) { // Try it out
-      y.dlShiftTo(j, t)
-      r.subTo(t, r)
-      while (r[i] < --qd) r.subTo(t, r)
+    // Very short reduction
+    if (num.length === 1) {
+      if (mode === 'div') {
+        return {
+          div: this.divn(num.words[0]),
+          mod: null
+        };
+      }
+
+      if (mode === 'mod') {
+        return {
+          div: null,
+          mod: new BN(this.modn(num.words[0]))
+        };
+      }
+
+      return {
+        div: this.divn(num.words[0]),
+        mod: new BN(this.modn(num.words[0]))
+      };
     }
-  }
-  if (q != null) {
-    r.drShiftTo(ys, q)
-    if (ts != ms) BigInteger.ZERO.subTo(q, q)
-  }
-  r.t = ys
-  r.clamp()
-  if (nsh > 0) r.rShiftTo(nsh, r); // Denormalize remainder
-  if (ts < 0) BigInteger.ZERO.subTo(r, r)
-}
 
-// (public) this mod a
-function bnMod(a) {
-  var r = new BigInteger()
-  this.abs()
-    .divRemTo(a, null, r)
-  if (this.s < 0 && r.compareTo(BigInteger.ZERO) > 0) a.subTo(r, r)
-  return r
-}
+    return this._wordDiv(num, mode);
+  };
+
+  // Find `this` / `num`
+  BN.prototype.div = function div (num) {
+    return this.divmod(num, 'div', false).div;
+  };
+
+  // Find `this` % `num`
+  BN.prototype.mod = function mod (num) {
+    return this.divmod(num, 'mod', false).mod;
+  };
 
-// Modular reduction using "classic" algorithm
-function Classic(m) {
-  this.m = m
-}
+  BN.prototype.umod = function umod (num) {
+    return this.divmod(num, 'mod', true).mod;
+  };
 
-function cConvert(x) {
-  if (x.s < 0 || x.compareTo(this.m) >= 0) return x.mod(this.m)
-  else return x
-}
+  // Find Round(`this` / `num`)
+  BN.prototype.divRound = function divRound (num) {
+    var dm = this.divmod(num);
 
-function cRevert(x) {
-  return x
-}
+    // Fast case - exact division
+    if (dm.mod.isZero()) return dm.div;
 
-function cReduce(x) {
-  x.divRemTo(this.m, null, x)
-}
+    var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;
 
-function cMulTo(x, y, r) {
-  x.multiplyTo(y, r)
-  this.reduce(r)
-}
+    var half = num.ushrn(1);
+    var r2 = num.andln(1);
+    var cmp = mod.cmp(half);
 
-function cSqrTo(x, r) {
-  x.squareTo(r)
-  this.reduce(r)
-}
+    // Round down
+    if (cmp < 0 || r2 === 1 && cmp === 0) return dm.div;
 
-Classic.prototype.convert = cConvert
-Classic.prototype.revert = cRevert
-Classic.prototype.reduce = cReduce
-Classic.prototype.mulTo = cMulTo
-Classic.prototype.sqrTo = cSqrTo
+    // Round up
+    return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
+  };
 
-// (protected) return "-1/this % 2^DB"; useful for Mont. reduction
-// justification:
-//         xy == 1 (mod m)
-//         xy =  1+km
-//   xy(2-xy) = (1+km)(1-km)
-// x[y(2-xy)] = 1-k^2m^2
-// x[y(2-xy)] == 1 (mod m^2)
-// if y is 1/x mod m, then y(2-xy) is 1/x mod m^2
-// should reduce x and y(2-xy) by m^2 at each step to keep size bounded.
-// JS multiply "overflows" differently from C/C++, so care is needed here.
-function bnpInvDigit() {
-  if (this.t < 1) return 0
-  var x = this[0]
-  if ((x & 1) == 0) return 0
-  var y = x & 3; // y == 1/x mod 2^2
-  y = (y * (2 - (x & 0xf) * y)) & 0xf; // y == 1/x mod 2^4
-  y = (y * (2 - (x & 0xff) * y)) & 0xff; // y == 1/x mod 2^8
-  y = (y * (2 - (((x & 0xffff) * y) & 0xffff))) & 0xffff; // y == 1/x mod 2^16
-  // last step - calculate inverse mod DV directly
-  // assumes 16 < DB <= 32 and assumes ability to handle 48-bit ints
-  y = (y * (2 - x * y % this.DV)) % this.DV; // y == 1/x mod 2^dbits
-  // we really want the negative inverse, and -DV < y < DV
-  return (y > 0) ? this.DV - y : -y
-}
+  BN.prototype.modn = function modn (num) {
+    assert(num <= 0x3ffffff);
+    var p = (1 << 26) % num;
 
-// Montgomery reduction
-function Montgomery(m) {
-  this.m = m
-  this.mp = m.invDigit()
-  this.mpl = this.mp & 0x7fff
-  this.mph = this.mp >> 15
-  this.um = (1 << (m.DB - 15)) - 1
-  this.mt2 = 2 * m.t
-}
+    var acc = 0;
+    for (var i = this.length - 1; i >= 0; i--) {
+      acc = (p * acc + (this.words[i] | 0)) % num;
+    }
 
-// xR mod m
-function montConvert(x) {
-  var r = new BigInteger()
-  x.abs()
-    .dlShiftTo(this.m.t, r)
-  r.divRemTo(this.m, null, r)
-  if (x.s < 0 && r.compareTo(BigInteger.ZERO) > 0) this.m.subTo(r, r)
-  return r
-}
+    return acc;
+  };
 
-// x/R mod m
-function montRevert(x) {
-  var r = new BigInteger()
-  x.copyTo(r)
-  this.reduce(r)
-  return r
-}
+  // In-place division by number
+  BN.prototype.idivn = function idivn (num) {
+    assert(num <= 0x3ffffff);
 
-// x = x/R mod m (HAC 14.32)
-function montReduce(x) {
-  while (x.t <= this.mt2) // pad x so am has enough room later
-    x[x.t++] = 0
-  for (var i = 0; i < this.m.t; ++i) {
-    // faster way of calculating u0 = x[i]*mp mod DV
-    var j = x[i] & 0x7fff
-    var u0 = (j * this.mpl + (((j * this.mph + (x[i] >> 15) * this.mpl) & this.um) << 15)) & x.DM
-    // use am to combine the multiply-shift-add into one call
-    j = i + this.m.t
-    x[j] += this.m.am(0, u0, x, i, 0, this.m.t)
-    // propagate carry
-    while (x[j] >= x.DV) {
-      x[j] -= x.DV
-      x[++j]++
+    var carry = 0;
+    for (var i = this.length - 1; i >= 0; i--) {
+      var w = (this.words[i] | 0) + carry * 0x4000000;
+      this.words[i] = (w / num) | 0;
+      carry = w % num;
     }
-  }
-  x.clamp()
-  x.drShiftTo(this.m.t, x)
-  if (x.compareTo(this.m) >= 0) x.subTo(this.m, x)
-}
 
-// r = "x^2/R mod m"; x != r
-function montSqrTo(x, r) {
-  x.squareTo(r)
-  this.reduce(r)
-}
+    return this.strip();
+  };
 
-// r = "xy/R mod m"; x,y != r
-function montMulTo(x, y, r) {
-  x.multiplyTo(y, r)
-  this.reduce(r)
-}
+  BN.prototype.divn = function divn (num) {
+    return this.clone().idivn(num);
+  };
 
-Montgomery.prototype.convert = montConvert
-Montgomery.prototype.revert = montRevert
-Montgomery.prototype.reduce = montReduce
-Montgomery.prototype.mulTo = montMulTo
-Montgomery.prototype.sqrTo = montSqrTo
+  BN.prototype.egcd = function egcd (p) {
+    assert(p.negative === 0);
+    assert(!p.isZero());
 
-// (protected) true iff this is even
-function bnpIsEven() {
-  return ((this.t > 0) ? (this[0] & 1) : this.s) == 0
-}
+    var x = this;
+    var y = p.clone();
 
-// (protected) this^e, e < 2^32, doing sqr and mul with "r" (HAC 14.79)
-function bnpExp(e, z) {
-  if (e > 0xffffffff || e < 1) return BigInteger.ONE
-  var r = new BigInteger(),
-    r2 = new BigInteger(),
-    g = z.convert(this),
-    i = nbits(e) - 1
-  g.copyTo(r)
-  while (--i >= 0) {
-    z.sqrTo(r, r2)
-    if ((e & (1 << i)) > 0) z.mulTo(r2, g, r)
-    else {
-      var t = r
-      r = r2
-      r2 = t
+    if (x.negative !== 0) {
+      x = x.umod(p);
+    } else {
+      x = x.clone();
     }
-  }
-  return z.revert(r)
-}
-
-// (public) this^e % m, 0 <= e < 2^32
-function bnModPowInt(e, m) {
-  var z
-  if (e < 256 || m.isEven()) z = new Classic(m)
-  else z = new Montgomery(m)
-  return this.exp(e, z)
-}
 
-// protected
-proto.copyTo = bnpCopyTo
-proto.fromInt = bnpFromInt
-proto.fromString = bnpFromString
-proto.clamp = bnpClamp
-proto.dlShiftTo = bnpDLShiftTo
-proto.drShiftTo = bnpDRShiftTo
-proto.lShiftTo = bnpLShiftTo
-proto.rShiftTo = bnpRShiftTo
-proto.subTo = bnpSubTo
-proto.multiplyTo = bnpMultiplyTo
-proto.squareTo = bnpSquareTo
-proto.divRemTo = bnpDivRemTo
-proto.invDigit = bnpInvDigit
-proto.isEven = bnpIsEven
-proto.exp = bnpExp
+    // A * x + B * y = x
+    var A = new BN(1);
+    var B = new BN(0);
 
-// public
-proto.toString = bnToString
-proto.negate = bnNegate
-proto.abs = bnAbs
-proto.compareTo = bnCompareTo
-proto.bitLength = bnBitLength
-proto.byteLength = bnByteLength
-proto.mod = bnMod
-proto.modPowInt = bnModPowInt
+    // C * x + D * y = y
+    var C = new BN(0);
+    var D = new BN(1);
 
-// (public)
-function bnClone() {
-  var r = new BigInteger()
-  this.copyTo(r)
-  return r
-}
+    var g = 0;
 
-// (public) return value as integer
-function bnIntValue() {
-  if (this.s < 0) {
-    if (this.t == 1) return this[0] - this.DV
-    else if (this.t == 0) return -1
-  } else if (this.t == 1) return this[0]
-  else if (this.t == 0) return 0
-  // assumes 16 < DB < 32
-  return ((this[1] & ((1 << (32 - this.DB)) - 1)) << this.DB) | this[0]
-}
+    while (x.isEven() && y.isEven()) {
+      x.iushrn(1);
+      y.iushrn(1);
+      ++g;
+    }
 
-// (public) return value as byte
-function bnByteValue() {
-  return (this.t == 0) ? this.s : (this[0] << 24) >> 24
-}
+    var yp = y.clone();
+    var xp = x.clone();
 
-// (public) return value as short (assumes DB>=16)
-function bnShortValue() {
-  return (this.t == 0) ? this.s : (this[0] << 16) >> 16
-}
+    while (!x.isZero()) {
+      for (var i = 0, im = 1; (x.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
+      if (i > 0) {
+        x.iushrn(i);
+        while (i-- > 0) {
+          if (A.isOdd() || B.isOdd()) {
+            A.iadd(yp);
+            B.isub(xp);
+          }
 
-// (protected) return x s.t. r^x < DV
-function bnpChunkSize(r) {
-  return Math.floor(Math.LN2 * this.DB / Math.log(r))
-}
+          A.iushrn(1);
+          B.iushrn(1);
+        }
+      }
 
-// (public) 0 if this == 0, 1 if this > 0
-function bnSigNum() {
-  if (this.s < 0) return -1
-  else if (this.t <= 0 || (this.t == 1 && this[0] <= 0)) return 0
-  else return 1
-}
+      for (var j = 0, jm = 1; (y.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
+      if (j > 0) {
+        y.iushrn(j);
+        while (j-- > 0) {
+          if (C.isOdd() || D.isOdd()) {
+            C.iadd(yp);
+            D.isub(xp);
+          }
 
-// (protected) convert to radix string
-function bnpToRadix(b) {
-  if (b == null) b = 10
-  if (this.signum() == 0 || b < 2 || b > 36) return "0"
-  var cs = this.chunkSize(b)
-  var a = Math.pow(b, cs)
-  var d = nbv(a),
-    y = new BigInteger(),
-    z = new BigInteger(),
-    r = ""
-  this.divRemTo(d, y, z)
-  while (y.signum() > 0) {
-    r = (a + z.intValue())
-      .toString(b)
-      .substr(1) + r
-    y.divRemTo(d, y, z)
-  }
-  return z.intValue()
-    .toString(b) + r
-}
+          C.iushrn(1);
+          D.iushrn(1);
+        }
+      }
 
-// (protected) convert from radix string
-function bnpFromRadix(s, b) {
-  var self = this
-  self.fromInt(0)
-  if (b == null) b = 10
-  var cs = self.chunkSize(b)
-  var d = Math.pow(b, cs),
-    mi = false,
-    j = 0,
-    w = 0
-  for (var i = 0; i < s.length; ++i) {
-    var x = intAt(s, i)
-    if (x < 0) {
-      if (s.charAt(i) == "-" && self.signum() == 0) mi = true
-      continue
+      if (x.cmp(y) >= 0) {
+        x.isub(y);
+        A.isub(C);
+        B.isub(D);
+      } else {
+        y.isub(x);
+        C.isub(A);
+        D.isub(B);
+      }
     }
-    w = b * w + x
-    if (++j >= cs) {
-      self.dMultiply(d)
-      self.dAddOffset(w, 0)
-      j = 0
-      w = 0
+
+    return {
+      a: C,
+      b: D,
+      gcd: y.iushln(g)
+    };
+  };
+
+  // This is reduced incarnation of the binary EEA
+  // above, designated to invert members of the
+  // _prime_ fields F(p) at a maximal speed
+  BN.prototype._invmp = function _invmp (p) {
+    assert(p.negative === 0);
+    assert(!p.isZero());
+
+    var a = this;
+    var b = p.clone();
+
+    if (a.negative !== 0) {
+      a = a.umod(p);
+    } else {
+      a = a.clone();
     }
-  }
-  if (j > 0) {
-    self.dMultiply(Math.pow(b, j))
-    self.dAddOffset(w, 0)
-  }
-  if (mi) BigInteger.ZERO.subTo(self, self)
-}
 
-// (protected) alternate constructor
-function bnpFromNumber(a, b, c) {
-  var self = this
-  if ("number" == typeof b) {
-    // new BigInteger(int,int,RNG)
-    if (a < 2) self.fromInt(1)
-    else {
-      self.fromNumber(a, c)
-      if (!self.testBit(a - 1)) // force MSB set
-        self.bitwiseTo(BigInteger.ONE.shiftLeft(a - 1), op_or, self)
-      if (self.isEven()) self.dAddOffset(1, 0); // force odd
-      while (!self.isProbablePrime(b)) {
-        self.dAddOffset(2, 0)
-        if (self.bitLength() > a) self.subTo(BigInteger.ONE.shiftLeft(a - 1), self)
+    var x1 = new BN(1);
+    var x2 = new BN(0);
+
+    var delta = b.clone();
+
+    while (a.cmpn(1) > 0 && b.cmpn(1) > 0) {
+      for (var i = 0, im = 1; (a.words[0] & im) === 0 && i < 26; ++i, im <<= 1);
+      if (i > 0) {
+        a.iushrn(i);
+        while (i-- > 0) {
+          if (x1.isOdd()) {
+            x1.iadd(delta);
+          }
+
+          x1.iushrn(1);
+        }
       }
-    }
-  } else {
-    // new BigInteger(int,RNG)
-    var x = new Array(),
-      t = a & 7
-    x.length = (a >> 3) + 1
-    b.nextBytes(x)
-    if (t > 0) x[0] &= ((1 << t) - 1)
-    else x[0] = 0
-    self.fromString(x, 256)
-  }
-}
 
-// (public) convert to bigendian byte array
-function bnToByteArray() {
-  var self = this
-  var i = self.t,
-    r = new Array()
-  r[0] = self.s
-  var p = self.DB - (i * self.DB) % 8,
-    d, k = 0
-  if (i-- > 0) {
-    if (p < self.DB && (d = self[i] >> p) != (self.s & self.DM) >> p)
-      r[k++] = d | (self.s << (self.DB - p))
-    while (i >= 0) {
-      if (p < 8) {
-        d = (self[i] & ((1 << p) - 1)) << (8 - p)
-        d |= self[--i] >> (p += self.DB - 8)
-      } else {
-        d = (self[i] >> (p -= 8)) & 0xff
-        if (p <= 0) {
-          p += self.DB
-          --i
+      for (var j = 0, jm = 1; (b.words[0] & jm) === 0 && j < 26; ++j, jm <<= 1);
+      if (j > 0) {
+        b.iushrn(j);
+        while (j-- > 0) {
+          if (x2.isOdd()) {
+            x2.iadd(delta);
+          }
+
+          x2.iushrn(1);
         }
       }
-      if ((d & 0x80) != 0) d |= -256
-      if (k === 0 && (self.s & 0x80) != (d & 0x80))++k
-      if (k > 0 || d != self.s) r[k++] = d
+
+      if (a.cmp(b) >= 0) {
+        a.isub(b);
+        x1.isub(x2);
+      } else {
+        b.isub(a);
+        x2.isub(x1);
+      }
     }
-  }
-  return r
-}
 
-function bnEquals(a) {
-  return (this.compareTo(a) == 0)
-}
+    var res;
+    if (a.cmpn(1) === 0) {
+      res = x1;
+    } else {
+      res = x2;
+    }
+
+    if (res.cmpn(0) < 0) {
+      res.iadd(p);
+    }
+
+    return res;
+  };
+
+  BN.prototype.gcd = function gcd (num) {
+    if (this.isZero()) return num.abs();
+    if (num.isZero()) return this.abs();
+
+    var a = this.clone();
+    var b = num.clone();
+    a.negative = 0;
+    b.negative = 0;
+
+    // Remove common factor of two
+    for (var shift = 0; a.isEven() && b.isEven(); shift++) {
+      a.iushrn(1);
+      b.iushrn(1);
+    }
+
+    do {
+      while (a.isEven()) {
+        a.iushrn(1);
+      }
+      while (b.isEven()) {
+        b.iushrn(1);
+      }
+
+      var r = a.cmp(b);
+      if (r < 0) {
+        // Swap `a` and `b` to make `a` always bigger than `b`
+        var t = a;
+        a = b;
+        b = t;
+      } else if (r === 0 || b.cmpn(1) === 0) {
+        break;
+      }
+
+      a.isub(b);
+    } while (true);
+
+    return b.iushln(shift);
+  };
+
+  // Invert number in the field F(num)
+  BN.prototype.invm = function invm (num) {
+    return this.egcd(num).a.umod(num);
+  };
+
+  BN.prototype.isEven = function isEven () {
+    return (this.words[0] & 1) === 0;
+  };
 
-function bnMin(a) {
-  return (this.compareTo(a) < 0) ? this : a
-}
+  BN.prototype.isOdd = function isOdd () {
+    return (this.words[0] & 1) === 1;
+  };
 
-function bnMax(a) {
-  return (this.compareTo(a) > 0) ? this : a
-}
+  // And first word and num
+  BN.prototype.andln = function andln (num) {
+    return this.words[0] & num;
+  };
 
-// (protected) r = this op a (bitwise)
-function bnpBitwiseTo(a, op, r) {
-  var self = this
-  var i, f, m = Math.min(a.t, self.t)
-  for (i = 0; i < m; ++i) r[i] = op(self[i], a[i])
-  if (a.t < self.t) {
-    f = a.s & self.DM
-    for (i = m; i < self.t; ++i) r[i] = op(self[i], f)
-    r.t = self.t
-  } else {
-    f = self.s & self.DM
-    for (i = m; i < a.t; ++i) r[i] = op(f, a[i])
-    r.t = a.t
-  }
-  r.s = op(self.s, a.s)
-  r.clamp()
-}
+  // Increment at the bit position in-line
+  BN.prototype.bincn = function bincn (bit) {
+    assert(typeof bit === 'number');
+    var r = bit % 26;
+    var s = (bit - r) / 26;
+    var q = 1 << r;
 
-// (public) this & a
-function op_and(x, y) {
-  return x & y
-}
+    // Fast case: bit is much higher than all existing words
+    if (this.length <= s) {
+      this._expand(s + 1);
+      this.words[s] |= q;
+      return this;
+    }
 
-function bnAnd(a) {
-  var r = new BigInteger()
-  this.bitwiseTo(a, op_and, r)
-  return r
-}
+    // Add bit and propagate, if needed
+    var carry = q;
+    for (var i = s; carry !== 0 && i < this.length; i++) {
+      var w = this.words[i] | 0;
+      w += carry;
+      carry = w >>> 26;
+      w &= 0x3ffffff;
+      this.words[i] = w;
+    }
+    if (carry !== 0) {
+      this.words[i] = carry;
+      this.length++;
+    }
+    return this;
+  };
 
-// (public) this | a
-function op_or(x, y) {
-  return x | y
-}
+  BN.prototype.isZero = function isZero () {
+    return this.length === 1 && this.words[0] === 0;
+  };
 
-function bnOr(a) {
-  var r = new BigInteger()
-  this.bitwiseTo(a, op_or, r)
-  return r
-}
+  BN.prototype.cmpn = function cmpn (num) {
+    var negative = num < 0;
 
-// (public) this ^ a
-function op_xor(x, y) {
-  return x ^ y
-}
+    if (this.negative !== 0 && !negative) return -1;
+    if (this.negative === 0 && negative) return 1;
 
-function bnXor(a) {
-  var r = new BigInteger()
-  this.bitwiseTo(a, op_xor, r)
-  return r
-}
+    this.strip();
 
-// (public) this & ~a
-function op_andnot(x, y) {
-  return x & ~y
-}
+    var res;
+    if (this.length > 1) {
+      res = 1;
+    } else {
+      if (negative) {
+        num = -num;
+      }
 
-function bnAndNot(a) {
-  var r = new BigInteger()
-  this.bitwiseTo(a, op_andnot, r)
-  return r
-}
+      assert(num <= 0x3ffffff, 'Number is too big');
 
-// (public) ~this
-function bnNot() {
-  var r = new BigInteger()
-  for (var i = 0; i < this.t; ++i) r[i] = this.DM & ~this[i]
-  r.t = this.t
-  r.s = ~this.s
-  return r
-}
+      var w = this.words[0] | 0;
+      res = w === num ? 0 : w < num ? -1 : 1;
+    }
+    if (this.negative !== 0) return -res | 0;
+    return res;
+  };
 
-// (public) this << n
-function bnShiftLeft(n) {
-  var r = new BigInteger()
-  if (n < 0) this.rShiftTo(-n, r)
-  else this.lShiftTo(n, r)
-  return r
-}
+  // Compare two numbers and return:
+  // 1 - if `this` > `num`
+  // 0 - if `this` == `num`
+  // -1 - if `this` < `num`
+  BN.prototype.cmp = function cmp (num) {
+    if (this.negative !== 0 && num.negative === 0) return -1;
+    if (this.negative === 0 && num.negative !== 0) return 1;
 
-// (public) this >> n
-function bnShiftRight(n) {
-  var r = new BigInteger()
-  if (n < 0) this.lShiftTo(-n, r)
-  else this.rShiftTo(n, r)
-  return r
-}
+    var res = this.ucmp(num);
+    if (this.negative !== 0) return -res | 0;
+    return res;
+  };
 
-// return index of lowest 1-bit in x, x < 2^31
-function lbit(x) {
-  if (x == 0) return -1
-  var r = 0
-  if ((x & 0xffff) == 0) {
-    x >>= 16
-    r += 16
-  }
-  if ((x & 0xff) == 0) {
-    x >>= 8
-    r += 8
-  }
-  if ((x & 0xf) == 0) {
-    x >>= 4
-    r += 4
-  }
-  if ((x & 3) == 0) {
-    x >>= 2
-    r += 2
-  }
-  if ((x & 1) == 0)++r
-  return r
-}
+  // Unsigned comparison
+  BN.prototype.ucmp = function ucmp (num) {
+    // At this point both numbers have the same sign
+    if (this.length > num.length) return 1;
+    if (this.length < num.length) return -1;
 
-// (public) returns index of lowest 1-bit (or -1 if none)
-function bnGetLowestSetBit() {
-  for (var i = 0; i < this.t; ++i)
-    if (this[i] != 0) return i * this.DB + lbit(this[i])
-  if (this.s < 0) return this.t * this.DB
-  return -1
-}
+    var res = 0;
+    for (var i = this.length - 1; i >= 0; i--) {
+      var a = this.words[i] | 0;
+      var b = num.words[i] | 0;
 
-// return number of 1 bits in x
-function cbit(x) {
-  var r = 0
-  while (x != 0) {
-    x &= x - 1
-    ++r
-  }
-  return r
-}
+      if (a === b) continue;
+      if (a < b) {
+        res = -1;
+      } else if (a > b) {
+        res = 1;
+      }
+      break;
+    }
+    return res;
+  };
 
-// (public) return number of set bits
-function bnBitCount() {
-  var r = 0,
-    x = this.s & this.DM
-  for (var i = 0; i < this.t; ++i) r += cbit(this[i] ^ x)
-  return r
-}
+  BN.prototype.gtn = function gtn (num) {
+    return this.cmpn(num) === 1;
+  };
 
-// (public) true iff nth bit is set
-function bnTestBit(n) {
-  var j = Math.floor(n / this.DB)
-  if (j >= this.t) return (this.s != 0)
-  return ((this[j] & (1 << (n % this.DB))) != 0)
-}
+  BN.prototype.gt = function gt (num) {
+    return this.cmp(num) === 1;
+  };
 
-// (protected) this op (1<<n)
-function bnpChangeBit(n, op) {
-  var r = BigInteger.ONE.shiftLeft(n)
-  this.bitwiseTo(r, op, r)
-  return r
-}
+  BN.prototype.gten = function gten (num) {
+    return this.cmpn(num) >= 0;
+  };
 
-// (public) this | (1<<n)
-function bnSetBit(n) {
-  return this.changeBit(n, op_or)
-}
+  BN.prototype.gte = function gte (num) {
+    return this.cmp(num) >= 0;
+  };
 
-// (public) this & ~(1<<n)
-function bnClearBit(n) {
-  return this.changeBit(n, op_andnot)
-}
+  BN.prototype.ltn = function ltn (num) {
+    return this.cmpn(num) === -1;
+  };
 
-// (public) this ^ (1<<n)
-function bnFlipBit(n) {
-  return this.changeBit(n, op_xor)
-}
+  BN.prototype.lt = function lt (num) {
+    return this.cmp(num) === -1;
+  };
 
-// (protected) r = this + a
-function bnpAddTo(a, r) {
-  var self = this
+  BN.prototype.lten = function lten (num) {
+    return this.cmpn(num) <= 0;
+  };
 
-  var i = 0,
-    c = 0,
-    m = Math.min(a.t, self.t)
-  while (i < m) {
-    c += self[i] + a[i]
-    r[i++] = c & self.DM
-    c >>= self.DB
-  }
-  if (a.t < self.t) {
-    c += a.s
-    while (i < self.t) {
-      c += self[i]
-      r[i++] = c & self.DM
-      c >>= self.DB
-    }
-    c += self.s
-  } else {
-    c += self.s
-    while (i < a.t) {
-      c += a[i]
-      r[i++] = c & self.DM
-      c >>= self.DB
-    }
-    c += a.s
-  }
-  r.s = (c < 0) ? -1 : 0
-  if (c > 0) r[i++] = c
-  else if (c < -1) r[i++] = self.DV + c
-  r.t = i
-  r.clamp()
-}
+  BN.prototype.lte = function lte (num) {
+    return this.cmp(num) <= 0;
+  };
 
-// (public) this + a
-function bnAdd(a) {
-  var r = new BigInteger()
-  this.addTo(a, r)
-  return r
-}
+  BN.prototype.eqn = function eqn (num) {
+    return this.cmpn(num) === 0;
+  };
 
-// (public) this - a
-function bnSubtract(a) {
-  var r = new BigInteger()
-  this.subTo(a, r)
-  return r
-}
+  BN.prototype.eq = function eq (num) {
+    return this.cmp(num) === 0;
+  };
 
-// (public) this * a
-function bnMultiply(a) {
-  var r = new BigInteger()
-  this.multiplyTo(a, r)
-  return r
-}
+  //
+  // A reduce context, could be using montgomery or something better, depending
+  // on the `m` itself.
+  //
+  BN.red = function red (num) {
+    return new Red(num);
+  };
 
-// (public) this^2
-function bnSquare() {
-  var r = new BigInteger()
-  this.squareTo(r)
-  return r
-}
+  BN.prototype.toRed = function toRed (ctx) {
+    assert(!this.red, 'Already a number in reduction context');
+    assert(this.negative === 0, 'red works only with positives');
+    return ctx.convertTo(this)._forceRed(ctx);
+  };
 
-// (public) this / a
-function bnDivide(a) {
-  var r = new BigInteger()
-  this.divRemTo(a, r, null)
-  return r
-}
+  BN.prototype.fromRed = function fromRed () {
+    assert(this.red, 'fromRed works only with numbers in reduction context');
+    return this.red.convertFrom(this);
+  };
 
-// (public) this % a
-function bnRemainder(a) {
-  var r = new BigInteger()
-  this.divRemTo(a, null, r)
-  return r
-}
+  BN.prototype._forceRed = function _forceRed (ctx) {
+    this.red = ctx;
+    return this;
+  };
 
-// (public) [this/a,this%a]
-function bnDivideAndRemainder(a) {
-  var q = new BigInteger(),
-    r = new BigInteger()
-  this.divRemTo(a, q, r)
-  return new Array(q, r)
-}
+  BN.prototype.forceRed = function forceRed (ctx) {
+    assert(!this.red, 'Already a number in reduction context');
+    return this._forceRed(ctx);
+  };
 
-// (protected) this *= n, this >= 0, 1 < n < DV
-function bnpDMultiply(n) {
-  this[this.t] = this.am(0, n - 1, this, 0, 0, this.t)
-  ++this.t
-  this.clamp()
-}
+  BN.prototype.redAdd = function redAdd (num) {
+    assert(this.red, 'redAdd works only with red numbers');
+    return this.red.add(this, num);
+  };
 
-// (protected) this += n << w words, this >= 0
-function bnpDAddOffset(n, w) {
-  if (n == 0) return
-  while (this.t <= w) this[this.t++] = 0
-  this[w] += n
-  while (this[w] >= this.DV) {
-    this[w] -= this.DV
-    if (++w >= this.t) this[this.t++] = 0
-    ++this[w]
-  }
-}
+  BN.prototype.redIAdd = function redIAdd (num) {
+    assert(this.red, 'redIAdd works only with red numbers');
+    return this.red.iadd(this, num);
+  };
 
-// A "null" reducer
-function NullExp() {}
+  BN.prototype.redSub = function redSub (num) {
+    assert(this.red, 'redSub works only with red numbers');
+    return this.red.sub(this, num);
+  };
 
-function nNop(x) {
-  return x
-}
+  BN.prototype.redISub = function redISub (num) {
+    assert(this.red, 'redISub works only with red numbers');
+    return this.red.isub(this, num);
+  };
 
-function nMulTo(x, y, r) {
-  x.multiplyTo(y, r)
-}
+  BN.prototype.redShl = function redShl (num) {
+    assert(this.red, 'redShl works only with red numbers');
+    return this.red.shl(this, num);
+  };
 
-function nSqrTo(x, r) {
-  x.squareTo(r)
-}
+  BN.prototype.redMul = function redMul (num) {
+    assert(this.red, 'redMul works only with red numbers');
+    this.red._verify2(this, num);
+    return this.red.mul(this, num);
+  };
 
-NullExp.prototype.convert = nNop
-NullExp.prototype.revert = nNop
-NullExp.prototype.mulTo = nMulTo
-NullExp.prototype.sqrTo = nSqrTo
+  BN.prototype.redIMul = function redIMul (num) {
+    assert(this.red, 'redMul works only with red numbers');
+    this.red._verify2(this, num);
+    return this.red.imul(this, num);
+  };
 
-// (public) this^e
-function bnPow(e) {
-  return this.exp(e, new NullExp())
-}
+  BN.prototype.redSqr = function redSqr () {
+    assert(this.red, 'redSqr works only with red numbers');
+    this.red._verify1(this);
+    return this.red.sqr(this);
+  };
 
-// (protected) r = lower n words of "this * a", a.t <= n
-// "this" should be the larger one if appropriate.
-function bnpMultiplyLowerTo(a, n, r) {
-  var i = Math.min(this.t + a.t, n)
-  r.s = 0; // assumes a,this >= 0
-  r.t = i
-  while (i > 0) r[--i] = 0
-  var j
-  for (j = r.t - this.t; i < j; ++i) r[i + this.t] = this.am(0, a[i], r, i, 0, this.t)
-  for (j = Math.min(a.t, n); i < j; ++i) this.am(0, a[i], r, i, 0, n - i)
-  r.clamp()
-}
+  BN.prototype.redISqr = function redISqr () {
+    assert(this.red, 'redISqr works only with red numbers');
+    this.red._verify1(this);
+    return this.red.isqr(this);
+  };
 
-// (protected) r = "this * a" without lower n words, n > 0
-// "this" should be the larger one if appropriate.
-function bnpMultiplyUpperTo(a, n, r) {
-  --n
-  var i = r.t = this.t + a.t - n
-  r.s = 0; // assumes a,this >= 0
-  while (--i >= 0) r[i] = 0
-  for (i = Math.max(n - this.t, 0); i < a.t; ++i)
-    r[this.t + i - n] = this.am(n - i, a[i], r, 0, 0, this.t + i - n)
-  r.clamp()
-  r.drShiftTo(1, r)
-}
+  // Square root over p
+  BN.prototype.redSqrt = function redSqrt () {
+    assert(this.red, 'redSqrt works only with red numbers');
+    this.red._verify1(this);
+    return this.red.sqrt(this);
+  };
 
-// Barrett modular reduction
-function Barrett(m) {
-  // setup Barrett
-  this.r2 = new BigInteger()
-  this.q3 = new BigInteger()
-  BigInteger.ONE.dlShiftTo(2 * m.t, this.r2)
-  this.mu = this.r2.divide(m)
-  this.m = m
-}
+  BN.prototype.redInvm = function redInvm () {
+    assert(this.red, 'redInvm works only with red numbers');
+    this.red._verify1(this);
+    return this.red.invm(this);
+  };
+
+  // Return negative clone of `this` % `red modulo`
+  BN.prototype.redNeg = function redNeg () {
+    assert(this.red, 'redNeg works only with red numbers');
+    this.red._verify1(this);
+    return this.red.neg(this);
+  };
+
+  BN.prototype.redPow = function redPow (num) {
+    assert(this.red && !num.red, 'redPow(normalNum)');
+    this.red._verify1(this);
+    return this.red.pow(this, num);
+  };
+
+  // Prime numbers with efficient reduction
+  var primes = {
+    k256: null,
+    p224: null,
+    p192: null,
+    p25519: null
+  };
 
-function barrettConvert(x) {
-  if (x.s < 0 || x.t > 2 * this.m.t) return x.mod(this.m)
-  else if (x.compareTo(this.m) < 0) return x
-  else {
-    var r = new BigInteger()
-    x.copyTo(r)
-    this.reduce(r)
-    return r
+  // Pseudo-Mersenne prime
+  function MPrime (name, p) {
+    // P = 2 ^ N - K
+    this.name = name;
+    this.p = new BN(p, 16);
+    this.n = this.p.bitLength();
+    this.k = new BN(1).iushln(this.n).isub(this.p);
+
+    this.tmp = this._tmp();
   }
-}
 
-function barrettRevert(x) {
-  return x
-}
+  MPrime.prototype._tmp = function _tmp () {
+    var tmp = new BN(null);
+    tmp.words = new Array(Math.ceil(this.n / 13));
+    return tmp;
+  };
 
-// x = x mod m (HAC 14.42)
-function barrettReduce(x) {
-  var self = this
-  x.drShiftTo(self.m.t - 1, self.r2)
-  if (x.t > self.m.t + 1) {
-    x.t = self.m.t + 1
-    x.clamp()
-  }
-  self.mu.multiplyUpperTo(self.r2, self.m.t + 1, self.q3)
-  self.m.multiplyLowerTo(self.q3, self.m.t + 1, self.r2)
-  while (x.compareTo(self.r2) < 0) x.dAddOffset(1, self.m.t + 1)
-  x.subTo(self.r2, x)
-  while (x.compareTo(self.m) >= 0) x.subTo(self.m, x)
-}
+  MPrime.prototype.ireduce = function ireduce (num) {
+    // Assumes that `num` is less than `P^2`
+    // num = HI * (2 ^ N - K) + HI * K + LO = HI * K + LO (mod P)
+    var r = num;
+    var rlen;
 
-// r = x^2 mod m; x != r
-function barrettSqrTo(x, r) {
-  x.squareTo(r)
-  this.reduce(r)
-}
+    do {
+      this.split(r, this.tmp);
+      r = this.imulK(r);
+      r = r.iadd(this.tmp);
+      rlen = r.bitLength();
+    } while (rlen > this.n);
 
-// r = x*y mod m; x,y != r
-function barrettMulTo(x, y, r) {
-  x.multiplyTo(y, r)
-  this.reduce(r)
-}
+    var cmp = rlen < this.n ? -1 : r.ucmp(this.p);
+    if (cmp === 0) {
+      r.words[0] = 0;
+      r.length = 1;
+    } else if (cmp > 0) {
+      r.isub(this.p);
+    } else {
+      r.strip();
+    }
 
-Barrett.prototype.convert = barrettConvert
-Barrett.prototype.revert = barrettRevert
-Barrett.prototype.reduce = barrettReduce
-Barrett.prototype.mulTo = barrettMulTo
-Barrett.prototype.sqrTo = barrettSqrTo
+    return r;
+  };
 
-// (public) this^e % m (HAC 14.85)
-function bnModPow(e, m) {
-  var i = e.bitLength(),
-    k, r = nbv(1),
-    z
-  if (i <= 0) return r
-  else if (i < 18) k = 1
-  else if (i < 48) k = 3
-  else if (i < 144) k = 4
-  else if (i < 768) k = 5
-  else k = 6
-  if (i < 8)
-    z = new Classic(m)
-  else if (m.isEven())
-    z = new Barrett(m)
-  else
-    z = new Montgomery(m)
+  MPrime.prototype.split = function split (input, out) {
+    input.iushrn(this.n, 0, out);
+  };
 
-  // precomputation
-  var g = new Array(),
-    n = 3,
-    k1 = k - 1,
-    km = (1 << k) - 1
-  g[1] = z.convert(this)
-  if (k > 1) {
-    var g2 = new BigInteger()
-    z.sqrTo(g[1], g2)
-    while (n <= km) {
-      g[n] = new BigInteger()
-      z.mulTo(g2, g[n - 2], g[n])
-      n += 2
-    }
+  MPrime.prototype.imulK = function imulK (num) {
+    return num.imul(this.k);
+  };
+
+  function K256 () {
+    MPrime.call(
+      this,
+      'k256',
+      'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f');
   }
+  inherits(K256, MPrime);
 
-  var j = e.t - 1,
-    w, is1 = true,
-    r2 = new BigInteger(),
-    t
-  i = nbits(e[j]) - 1
-  while (j >= 0) {
-    if (i >= k1) w = (e[j] >> (i - k1)) & km
-    else {
-      w = (e[j] & ((1 << (i + 1)) - 1)) << (k1 - i)
-      if (j > 0) w |= e[j - 1] >> (this.DB + i - k1)
+  K256.prototype.split = function split (input, output) {
+    // 256 = 9 * 26 + 22
+    var mask = 0x3fffff;
+
+    var outLen = Math.min(input.length, 9);
+    for (var i = 0; i < outLen; i++) {
+      output.words[i] = input.words[i];
     }
+    output.length = outLen;
 
-    n = k
-    while ((w & 1) == 0) {
-      w >>= 1
-      --n
+    if (input.length <= 9) {
+      input.words[0] = 0;
+      input.length = 1;
+      return;
     }
-    if ((i -= n) < 0) {
-      i += this.DB
-      --j
+
+    // Shift by 9 limbs
+    var prev = input.words[9];
+    output.words[output.length++] = prev & mask;
+
+    for (i = 10; i < input.length; i++) {
+      var next = input.words[i] | 0;
+      input.words[i - 10] = ((next & mask) << 4) | (prev >>> 22);
+      prev = next;
     }
-    if (is1) { // ret == 1, don't bother squaring or multiplying it
-      g[w].copyTo(r)
-      is1 = false
+    prev >>>= 22;
+    input.words[i - 10] = prev;
+    if (prev === 0 && input.length > 10) {
+      input.length -= 10;
     } else {
-      while (n > 1) {
-        z.sqrTo(r, r2)
-        z.sqrTo(r2, r)
-        n -= 2
-      }
-      if (n > 0) z.sqrTo(r, r2)
-      else {
-        t = r
-        r = r2
-        r2 = t
-      }
-      z.mulTo(r2, g[w], r)
+      input.length -= 9;
     }
+  };
 
-    while (j >= 0 && (e[j] & (1 << i)) == 0) {
-      z.sqrTo(r, r2)
-      t = r
-      r = r2
-      r2 = t
-      if (--i < 0) {
-        i = this.DB - 1
-        --j
+  K256.prototype.imulK = function imulK (num) {
+    // K = 0x1000003d1 = [ 0x40, 0x3d1 ]
+    num.words[num.length] = 0;
+    num.words[num.length + 1] = 0;
+    num.length += 2;
+
+    // bounded at: 0x40 * 0x3ffffff + 0x3d0 = 0x100000390
+    var lo = 0;
+    for (var i = 0; i < num.length; i++) {
+      var w = num.words[i] | 0;
+      lo += w * 0x3d1;
+      num.words[i] = lo & 0x3ffffff;
+      lo = w * 0x40 + ((lo / 0x4000000) | 0);
+    }
+
+    // Fast length reduction
+    if (num.words[num.length - 1] === 0) {
+      num.length--;
+      if (num.words[num.length - 1] === 0) {
+        num.length--;
       }
     }
-  }
-  return z.revert(r)
-}
+    return num;
+  };
 
-// (public) gcd(this,a) (HAC 14.54)
-function bnGCD(a) {
-  var x = (this.s < 0) ? this.negate() : this.clone()
-  var y = (a.s < 0) ? a.negate() : a.clone()
-  if (x.compareTo(y) < 0) {
-    var t = x
-    x = y
-    y = t
+  function P224 () {
+    MPrime.call(
+      this,
+      'p224',
+      'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001');
   }
-  var i = x.getLowestSetBit(),
-    g = y.getLowestSetBit()
-  if (g < 0) return x
-  if (i < g) g = i
-  if (g > 0) {
-    x.rShiftTo(g, x)
-    y.rShiftTo(g, y)
+  inherits(P224, MPrime);
+
+  function P192 () {
+    MPrime.call(
+      this,
+      'p192',
+      'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff');
   }
-  while (x.signum() > 0) {
-    if ((i = x.getLowestSetBit()) > 0) x.rShiftTo(i, x)
-    if ((i = y.getLowestSetBit()) > 0) y.rShiftTo(i, y)
-    if (x.compareTo(y) >= 0) {
-      x.subTo(y, x)
-      x.rShiftTo(1, x)
-    } else {
-      y.subTo(x, y)
-      y.rShiftTo(1, y)
-    }
+  inherits(P192, MPrime);
+
+  function P25519 () {
+    // 2 ^ 255 - 19
+    MPrime.call(
+      this,
+      '25519',
+      '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed');
   }
-  if (g > 0) y.lShiftTo(g, y)
-  return y
-}
+  inherits(P25519, MPrime);
 
-// (protected) this % n, n < 2^26
-function bnpModInt(n) {
-  if (n <= 0) return 0
-  var d = this.DV % n,
-    r = (this.s < 0) ? n - 1 : 0
-  if (this.t > 0)
-    if (d == 0) r = this[0] % n
-    else
-      for (var i = this.t - 1; i >= 0; --i) r = (d * r + this[i]) % n
-  return r
-}
+  P25519.prototype.imulK = function imulK (num) {
+    // K = 0x13
+    var carry = 0;
+    for (var i = 0; i < num.length; i++) {
+      var hi = (num.words[i] | 0) * 0x13 + carry;
+      var lo = hi & 0x3ffffff;
+      hi >>>= 26;
 
-// (public) 1/this % m (HAC 14.61)
-function bnModInverse(m) {
-  var ac = m.isEven()
-  if (this.signum() === 0) throw new Error('division by zero')
-  if ((this.isEven() && ac) || m.signum() == 0) return BigInteger.ZERO
-  var u = m.clone(),
-    v = this.clone()
-  var a = nbv(1),
-    b = nbv(0),
-    c = nbv(0),
-    d = nbv(1)
-  while (u.signum() != 0) {
-    while (u.isEven()) {
-      u.rShiftTo(1, u)
-      if (ac) {
-        if (!a.isEven() || !b.isEven()) {
-          a.addTo(this, a)
-          b.subTo(m, b)
-        }
-        a.rShiftTo(1, a)
-      } else if (!b.isEven()) b.subTo(m, b)
-      b.rShiftTo(1, b)
+      num.words[i] = lo;
+      carry = hi;
     }
-    while (v.isEven()) {
-      v.rShiftTo(1, v)
-      if (ac) {
-        if (!c.isEven() || !d.isEven()) {
-          c.addTo(this, c)
-          d.subTo(m, d)
-        }
-        c.rShiftTo(1, c)
-      } else if (!d.isEven()) d.subTo(m, d)
-      d.rShiftTo(1, d)
+    if (carry !== 0) {
+      num.words[num.length++] = carry;
     }
-    if (u.compareTo(v) >= 0) {
-      u.subTo(v, u)
-      if (ac) a.subTo(c, a)
-      b.subTo(d, b)
+    return num;
+  };
+
+  // Exported mostly for testing purposes, use plain name instead
+  BN._prime = function prime (name) {
+    // Cached version of prime
+    if (primes[name]) return primes[name];
+
+    var prime;
+    if (name === 'k256') {
+      prime = new K256();
+    } else if (name === 'p224') {
+      prime = new P224();
+    } else if (name === 'p192') {
+      prime = new P192();
+    } else if (name === 'p25519') {
+      prime = new P25519();
     } else {
-      v.subTo(u, v)
-      if (ac) c.subTo(a, c)
-      d.subTo(b, d)
+      throw new Error('Unknown prime ' + name);
+    }
+    primes[name] = prime;
+
+    return prime;
+  };
+
+  //
+  // Base reduction engine
+  //
+  function Red (m) {
+    if (typeof m === 'string') {
+      var prime = BN._prime(m);
+      this.m = prime.p;
+      this.prime = prime;
+    } else {
+      assert(m.gtn(1), 'modulus must be greater than 1');
+      this.m = m;
+      this.prime = null;
     }
   }
-  if (v.compareTo(BigInteger.ONE) != 0) return BigInteger.ZERO
-  while (d.compareTo(m) >= 0) d.subTo(m, d)
-  while (d.signum() < 0) d.addTo(m, d)
-  return d
-}
 
-var lowprimes = [
-  2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
-  73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151,
-  157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233,
-  239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317,
-  331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419,
-  421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503,
-  509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607,
-  613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701,
-  709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811,
-  821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911,
-  919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, 997
-]
+  Red.prototype._verify1 = function _verify1 (a) {
+    assert(a.negative === 0, 'red works only with positives');
+    assert(a.red, 'red works only with red numbers');
+  };
 
-var lplim = (1 << 26) / lowprimes[lowprimes.length - 1]
+  Red.prototype._verify2 = function _verify2 (a, b) {
+    assert((a.negative | b.negative) === 0, 'red works only with positives');
+    assert(a.red && a.red === b.red,
+      'red works only with red numbers');
+  };
 
-// (public) test primality with certainty >= 1-.5^t
-function bnIsProbablePrime(t) {
-  var i, x = this.abs()
-  if (x.t == 1 && x[0] <= lowprimes[lowprimes.length - 1]) {
-    for (i = 0; i < lowprimes.length; ++i)
-      if (x[0] == lowprimes[i]) return true
-    return false
-  }
-  if (x.isEven()) return false
-  i = 1
-  while (i < lowprimes.length) {
-    var m = lowprimes[i],
-      j = i + 1
-    while (j < lowprimes.length && m < lplim) m *= lowprimes[j++]
-    m = x.modInt(m)
-    while (i < j) if (m % lowprimes[i++] == 0) return false
-  }
-  return x.millerRabin(t)
-}
+  Red.prototype.imod = function imod (a) {
+    if (this.prime) return this.prime.ireduce(a)._forceRed(this);
+    return a.umod(this.m)._forceRed(this);
+  };
 
-// (protected) true if probably prime (HAC 4.24, Miller-Rabin)
-function bnpMillerRabin(t) {
-  var n1 = this.subtract(BigInteger.ONE)
-  var k = n1.getLowestSetBit()
-  if (k <= 0) return false
-  var r = n1.shiftRight(k)
-  t = (t + 1) >> 1
-  if (t > lowprimes.length) t = lowprimes.length
-  var a = new BigInteger(null)
-  var j, bases = []
-  for (var i = 0; i < t; ++i) {
-    for (;;) {
-      j = lowprimes[Math.floor(Math.random() * lowprimes.length)]
-      if (bases.indexOf(j) == -1) break
+  Red.prototype.neg = function neg (a) {
+    if (a.isZero()) {
+      return a.clone();
     }
-    bases.push(j)
-    a.fromInt(j)
-    var y = a.modPow(r, this)
-    if (y.compareTo(BigInteger.ONE) != 0 && y.compareTo(n1) != 0) {
-      var j = 1
-      while (j++ < k && y.compareTo(n1) != 0) {
-        y = y.modPowInt(2, this)
-        if (y.compareTo(BigInteger.ONE) == 0) return false
-      }
-      if (y.compareTo(n1) != 0) return false
+
+    return this.m.sub(a)._forceRed(this);
+  };
+
+  Red.prototype.add = function add (a, b) {
+    this._verify2(a, b);
+
+    var res = a.add(b);
+    if (res.cmp(this.m) >= 0) {
+      res.isub(this.m);
     }
-  }
-  return true
-}
+    return res._forceRed(this);
+  };
 
-// protected
-proto.chunkSize = bnpChunkSize
-proto.toRadix = bnpToRadix
-proto.fromRadix = bnpFromRadix
-proto.fromNumber = bnpFromNumber
-proto.bitwiseTo = bnpBitwiseTo
-proto.changeBit = bnpChangeBit
-proto.addTo = bnpAddTo
-proto.dMultiply = bnpDMultiply
-proto.dAddOffset = bnpDAddOffset
-proto.multiplyLowerTo = bnpMultiplyLowerTo
-proto.multiplyUpperTo = bnpMultiplyUpperTo
-proto.modInt = bnpModInt
-proto.millerRabin = bnpMillerRabin
+  Red.prototype.iadd = function iadd (a, b) {
+    this._verify2(a, b);
 
-// public
-proto.clone = bnClone
-proto.intValue = bnIntValue
-proto.byteValue = bnByteValue
-proto.shortValue = bnShortValue
-proto.signum = bnSigNum
-proto.toByteArray = bnToByteArray
-proto.equals = bnEquals
-proto.min = bnMin
-proto.max = bnMax
-proto.and = bnAnd
-proto.or = bnOr
-proto.xor = bnXor
-proto.andNot = bnAndNot
-proto.not = bnNot
-proto.shiftLeft = bnShiftLeft
-proto.shiftRight = bnShiftRight
-proto.getLowestSetBit = bnGetLowestSetBit
-proto.bitCount = bnBitCount
-proto.testBit = bnTestBit
-proto.setBit = bnSetBit
-proto.clearBit = bnClearBit
-proto.flipBit = bnFlipBit
-proto.add = bnAdd
-proto.subtract = bnSubtract
-proto.multiply = bnMultiply
-proto.divide = bnDivide
-proto.remainder = bnRemainder
-proto.divideAndRemainder = bnDivideAndRemainder
-proto.modPow = bnModPow
-proto.modInverse = bnModInverse
-proto.pow = bnPow
-proto.gcd = bnGCD
-proto.isProbablePrime = bnIsProbablePrime
+    var res = a.iadd(b);
+    if (res.cmp(this.m) >= 0) {
+      res.isub(this.m);
+    }
+    return res;
+  };
 
-// JSBN-specific extension
-proto.square = bnSquare
+  Red.prototype.sub = function sub (a, b) {
+    this._verify2(a, b);
 
-// constants
-BigInteger.ZERO = nbv(0)
-BigInteger.ONE = nbv(1)
-BigInteger.valueOf = nbv
+    var res = a.sub(b);
+    if (res.cmpn(0) < 0) {
+      res.iadd(this.m);
+    }
+    return res._forceRed(this);
+  };
 
-module.exports = BigInteger
+  Red.prototype.isub = function isub (a, b) {
+    this._verify2(a, b);
 
-},{"../package.json":38}],36:[function(require,module,exports){
-(function (Buffer){
-// FIXME: Kind of a weird way to throw exceptions, consider removing
-var assert = require('assert')
-var BigInteger = require('./bigi')
+    var res = a.isub(b);
+    if (res.cmpn(0) < 0) {
+      res.iadd(this.m);
+    }
+    return res;
+  };
 
-/**
- * Turns a byte array into a big integer.
- *
- * This function will interpret a byte array as a big integer in big
- * endian notation.
- */
-BigInteger.fromByteArrayUnsigned = function(byteArray) {
-  // BigInteger expects a DER integer conformant byte array
-  if (byteArray[0] & 0x80) {
-    return new BigInteger([0].concat(byteArray))
-  }
+  Red.prototype.shl = function shl (a, num) {
+    this._verify1(a);
+    return this.imod(a.ushln(num));
+  };
 
-  return new BigInteger(byteArray)
-}
+  Red.prototype.imul = function imul (a, b) {
+    this._verify2(a, b);
+    return this.imod(a.imul(b));
+  };
 
-/**
- * Returns a byte array representation of the big integer.
- *
- * This returns the absolute of the contained value in big endian
- * form. A value of zero results in an empty array.
- */
-BigInteger.prototype.toByteArrayUnsigned = function() {
-  var byteArray = this.toByteArray()
-  return byteArray[0] === 0 ? byteArray.slice(1) : byteArray
-}
+  Red.prototype.mul = function mul (a, b) {
+    this._verify2(a, b);
+    return this.imod(a.mul(b));
+  };
 
-BigInteger.fromDERInteger = function(byteArray) {
-  return new BigInteger(byteArray)
-}
+  Red.prototype.isqr = function isqr (a) {
+    return this.imul(a, a.clone());
+  };
 
-/*
- * Converts BigInteger to a DER integer representation.
- *
- * The format for this value uses the most significant bit as a sign
- * bit.  If the most significant bit is already set and the integer is
- * positive, a 0x00 is prepended.
- *
- * Examples:
- *
- *      0 =>     0x00
- *      1 =>     0x01
- *     -1 =>     0xff
- *    127 =>     0x7f
- *   -127 =>     0x81
- *    128 =>   0x0080
- *   -128 =>     0x80
- *    255 =>   0x00ff
- *   -255 =>   0xff01
- *  16300 =>   0x3fac
- * -16300 =>   0xc054
- *  62300 => 0x00f35c
- * -62300 => 0xff0ca4
-*/
-BigInteger.prototype.toDERInteger = BigInteger.prototype.toByteArray
+  Red.prototype.sqr = function sqr (a) {
+    return this.mul(a, a);
+  };
 
-BigInteger.fromBuffer = function(buffer) {
-  // BigInteger expects a DER integer conformant byte array
-  if (buffer[0] & 0x80) {
-    var byteArray = Array.prototype.slice.call(buffer)
+  Red.prototype.sqrt = function sqrt (a) {
+    if (a.isZero()) return a.clone();
 
-    return new BigInteger([0].concat(byteArray))
-  }
+    var mod3 = this.m.andln(3);
+    assert(mod3 % 2 === 1);
 
-  return new BigInteger(buffer)
-}
+    // Fast case
+    if (mod3 === 3) {
+      var pow = this.m.add(new BN(1)).iushrn(2);
+      return this.pow(a, pow);
+    }
 
-BigInteger.fromHex = function(hex) {
-  if (hex === '') return BigInteger.ZERO
+    // Tonelli-Shanks algorithm (Totally unoptimized and slow)
+    //
+    // Find Q and S, that Q * 2 ^ S = (P - 1)
+    var q = this.m.subn(1);
+    var s = 0;
+    while (!q.isZero() && q.andln(1) === 0) {
+      s++;
+      q.iushrn(1);
+    }
+    assert(!q.isZero());
 
-  assert.equal(hex, hex.match(/^[A-Fa-f0-9]+/), 'Invalid hex string')
-  assert.equal(hex.length % 2, 0, 'Incomplete hex')
-  return new BigInteger(hex, 16)
-}
+    var one = new BN(1).toRed(this);
+    var nOne = one.redNeg();
 
-BigInteger.prototype.toBuffer = function(size) {
-  var byteArray = this.toByteArrayUnsigned()
-  var zeros = []
+    // Find quadratic non-residue
+    // NOTE: Max is such because of generalized Riemann hypothesis.
+    var lpow = this.m.subn(1).iushrn(1);
+    var z = this.m.bitLength();
+    z = new BN(2 * z * z).toRed(this);
 
-  var padding = size - byteArray.length
-  while (zeros.length < padding) zeros.push(0)
+    while (this.pow(z, lpow).cmp(nOne) !== 0) {
+      z.redIAdd(nOne);
+    }
 
-  return new Buffer(zeros.concat(byteArray))
-}
+    var c = this.pow(z, q);
+    var r = this.pow(a, q.addn(1).iushrn(1));
+    var t = this.pow(a, q);
+    var m = s;
+    while (t.cmp(one) !== 0) {
+      var tmp = t;
+      for (var i = 0; tmp.cmp(one) !== 0; i++) {
+        tmp = tmp.redSqr();
+      }
+      assert(i < m);
+      var b = this.pow(c, new BN(1).iushln(m - i - 1));
 
-BigInteger.prototype.toHex = function(size) {
-  return this.toBuffer(size).toString('hex')
-}
+      r = r.redMul(b);
+      c = b.redSqr();
+      t = t.redMul(c);
+      m = i;
+    }
 
-}).call(this,require("buffer").Buffer)
-},{"./bigi":35,"assert":1,"buffer":4}],37:[function(require,module,exports){
-var BigInteger = require('./bigi')
+    return r;
+  };
 
-//addons
-require('./convert')
+  Red.prototype.invm = function invm (a) {
+    var inv = a._invmp(this.m);
+    if (inv.negative !== 0) {
+      inv.negative = 0;
+      return this.imod(inv).redNeg();
+    } else {
+      return this.imod(inv);
+    }
+  };
 
-module.exports = BigInteger
-},{"./bigi":35,"./convert":36}],38:[function(require,module,exports){
-module.exports={
-  "_args": [
-    [
-      "bigi",
-      "/home/ian/git/bitcoin/bitcoinjs-lib-browser"
-    ]
-  ],
-  "_from": "bigi@latest",
-  "_id": "bigi@1.4.2",
-  "_inCache": true,
-  "_installable": true,
-  "_location": "/bigi",
-  "_nodeVersion": "6.1.0",
-  "_npmOperationalInternal": {
-    "host": "packages-12-west.internal.npmjs.com",
-    "tmp": "tmp/bigi-1.4.2.tgz_1469584192413_0.6801238611806184"
-  },
-  "_npmUser": {
-    "email": "jprichardson@gmail.com",
-    "name": "jprichardson"
-  },
-  "_npmVersion": "3.8.6",
-  "_phantomChildren": {},
-  "_requested": {
-    "name": "bigi",
-    "raw": "bigi",
-    "rawSpec": "",
-    "scope": null,
-    "spec": "latest",
-    "type": "tag"
-  },
-  "_requiredBy": [
-    "#USER",
-    "/bitcoinjs-lib",
-    "/ecurve"
-  ],
-  "_resolved": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz",
-  "_shasum": "9c665a95f88b8b08fc05cfd731f561859d725825",
-  "_shrinkwrap": null,
-  "_spec": "bigi",
-  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser",
-  "bugs": {
-    "url": "https://github.com/cryptocoinjs/bigi/issues"
-  },
-  "dependencies": {},
-  "description": "Big integers.",
-  "devDependencies": {
-    "coveralls": "^2.11.2",
-    "istanbul": "^0.3.5",
-    "jshint": "^2.5.1",
-    "mocha": "^2.1.0",
-    "mochify": "^2.1.0"
-  },
-  "directories": {},
-  "dist": {
-    "shasum": "9c665a95f88b8b08fc05cfd731f561859d725825",
-    "tarball": "https://registry.npmjs.org/bigi/-/bigi-1.4.2.tgz"
-  },
-  "gitHead": "c25308081c896ff84702303722bf5ecd8b3f78e3",
-  "homepage": "https://github.com/cryptocoinjs/bigi#readme",
-  "keywords": [
-    "cryptography",
-    "math",
-    "bitcoin",
-    "arbitrary",
-    "precision",
-    "arithmetic",
-    "big",
-    "integer",
-    "int",
-    "number",
-    "biginteger",
-    "bigint",
-    "bignumber",
-    "decimal",
-    "float"
-  ],
-  "main": "./lib/index.js",
-  "maintainers": [
-    {
-      "email": "boydb@midnightdesign.ws",
-      "name": "midnightlightning"
-    },
-    {
-      "email": "sidazhang89@gmail.com",
-      "name": "sidazhang"
-    },
-    {
-      "email": "npm@shesek.info",
-      "name": "nadav"
-    },
-    {
-      "email": "jprichardson@gmail.com",
-      "name": "jprichardson"
+  Red.prototype.pow = function pow (a, num) {
+    if (num.isZero()) return new BN(1);
+    if (num.cmpn(1) === 0) return a.clone();
+
+    var windowSize = 4;
+    var wnd = new Array(1 << windowSize);
+    wnd[0] = new BN(1).toRed(this);
+    wnd[1] = a;
+    for (var i = 2; i < wnd.length; i++) {
+      wnd[i] = this.mul(wnd[i - 1], a);
     }
-  ],
-  "name": "bigi",
-  "optionalDependencies": {},
-  "readme": "ERROR: No README data found!",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/cryptocoinjs/bigi.git"
-  },
-  "scripts": {
-    "browser-test": "mochify --wd -R spec",
-    "coverage": "istanbul cover ./node_modules/.bin/_mocha -- --reporter list test/*.js",
-    "coveralls": "npm run-script coverage && node ./node_modules/.bin/coveralls < coverage/lcov.info",
-    "jshint": "jshint --config jshint.json lib/*.js ; true",
-    "test": "_mocha -- test/*.js",
-    "unit": "mocha"
-  },
-  "testling": {
-    "browsers": [
-      "ie/9..latest",
-      "firefox/latest",
-      "chrome/latest",
-      "safari/6.0..latest",
-      "iphone/6.0..latest",
-      "android-browser/4.2..latest"
-    ],
-    "files": "test/*.js",
-    "harness": "mocha"
-  },
-  "version": "1.4.2"
-}
 
-},{}],39:[function(require,module,exports){
-// Reference https://github.com/bitcoin/bips/blob/master/bip-0066.mediawiki
-// Format: 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
-// NOTE: SIGHASH byte ignored AND restricted, truncate before use
+    var res = wnd[0];
+    var current = 0;
+    var currentLen = 0;
+    var start = num.bitLength() % 26;
+    if (start === 0) {
+      start = 26;
+    }
 
-var Buffer = require('safe-buffer').Buffer
+    for (i = num.length - 1; i >= 0; i--) {
+      var word = num.words[i];
+      for (var j = start - 1; j >= 0; j--) {
+        var bit = (word >> j) & 1;
+        if (res !== wnd[0]) {
+          res = this.sqr(res);
+        }
 
-function check (buffer) {
-  if (buffer.length < 8) return false
-  if (buffer.length > 72) return false
-  if (buffer[0] !== 0x30) return false
-  if (buffer[1] !== buffer.length - 2) return false
-  if (buffer[2] !== 0x02) return false
+        if (bit === 0 && current === 0) {
+          currentLen = 0;
+          continue;
+        }
 
-  var lenR = buffer[3]
-  if (lenR === 0) return false
-  if (5 + lenR >= buffer.length) return false
-  if (buffer[4 + lenR] !== 0x02) return false
+        current <<= 1;
+        current |= bit;
+        currentLen++;
+        if (currentLen !== windowSize && (i !== 0 || j !== 0)) continue;
 
-  var lenS = buffer[5 + lenR]
-  if (lenS === 0) return false
-  if ((6 + lenR + lenS) !== buffer.length) return false
+        res = this.mul(res, wnd[current]);
+        currentLen = 0;
+        current = 0;
+      }
+      start = 26;
+    }
 
-  if (buffer[4] & 0x80) return false
-  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) return false
+    return res;
+  };
 
-  if (buffer[lenR + 6] & 0x80) return false
-  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) return false
-  return true
-}
+  Red.prototype.convertTo = function convertTo (num) {
+    var r = num.umod(this.m);
 
-function decode (buffer) {
-  if (buffer.length < 8) throw new Error('DER sequence length is too short')
-  if (buffer.length > 72) throw new Error('DER sequence length is too long')
-  if (buffer[0] !== 0x30) throw new Error('Expected DER sequence')
-  if (buffer[1] !== buffer.length - 2) throw new Error('DER sequence length is invalid')
-  if (buffer[2] !== 0x02) throw new Error('Expected DER integer')
+    return r === num ? r.clone() : r;
+  };
 
-  var lenR = buffer[3]
-  if (lenR === 0) throw new Error('R length is zero')
-  if (5 + lenR >= buffer.length) throw new Error('R length is too long')
-  if (buffer[4 + lenR] !== 0x02) throw new Error('Expected DER integer (2)')
+  Red.prototype.convertFrom = function convertFrom (num) {
+    var res = num.clone();
+    res.red = null;
+    return res;
+  };
 
-  var lenS = buffer[5 + lenR]
-  if (lenS === 0) throw new Error('S length is zero')
-  if ((6 + lenR + lenS) !== buffer.length) throw new Error('S length is invalid')
+  //
+  // Montgomery method engine
+  //
 
-  if (buffer[4] & 0x80) throw new Error('R value is negative')
-  if (lenR > 1 && (buffer[4] === 0x00) && !(buffer[5] & 0x80)) throw new Error('R value excessively padded')
+  BN.mont = function mont (num) {
+    return new Mont(num);
+  };
 
-  if (buffer[lenR + 6] & 0x80) throw new Error('S value is negative')
-  if (lenS > 1 && (buffer[lenR + 6] === 0x00) && !(buffer[lenR + 7] & 0x80)) throw new Error('S value excessively padded')
+  function Mont (m) {
+    Red.call(this, m);
 
-  // non-BIP66 - extract R, S values
-  return {
-    r: buffer.slice(4, 4 + lenR),
-    s: buffer.slice(6 + lenR)
+    this.shift = this.m.bitLength();
+    if (this.shift % 26 !== 0) {
+      this.shift += 26 - (this.shift % 26);
+    }
+
+    this.r = new BN(1).iushln(this.shift);
+    this.r2 = this.imod(this.r.sqr());
+    this.rinv = this.r._invmp(this.m);
+
+    this.minv = this.rinv.mul(this.r).isubn(1).div(this.m);
+    this.minv = this.minv.umod(this.r);
+    this.minv = this.r.sub(this.minv);
   }
-}
+  inherits(Mont, Red);
 
-/*
- * Expects r and s to be positive DER integers.
- *
- * The DER format uses the most significant bit as a sign bit (& 0x80).
- * If the significant bit is set AND the integer is positive, a 0x00 is prepended.
- *
- * Examples:
- *
- *      0 =>     0x00
- *      1 =>     0x01
- *     -1 =>     0xff
- *    127 =>     0x7f
- *   -127 =>     0x81
- *    128 =>   0x0080
- *   -128 =>     0x80
- *    255 =>   0x00ff
- *   -255 =>   0xff01
- *  16300 =>   0x3fac
- * -16300 =>   0xc054
- *  62300 => 0x00f35c
- * -62300 => 0xff0ca4
-*/
-function encode (r, s) {
-  var lenR = r.length
-  var lenS = s.length
-  if (lenR === 0) throw new Error('R length is zero')
-  if (lenS === 0) throw new Error('S length is zero')
-  if (lenR > 33) throw new Error('R length is too long')
-  if (lenS > 33) throw new Error('S length is too long')
-  if (r[0] & 0x80) throw new Error('R value is negative')
-  if (s[0] & 0x80) throw new Error('S value is negative')
-  if (lenR > 1 && (r[0] === 0x00) && !(r[1] & 0x80)) throw new Error('R value excessively padded')
-  if (lenS > 1 && (s[0] === 0x00) && !(s[1] & 0x80)) throw new Error('S value excessively padded')
+  Mont.prototype.convertTo = function convertTo (num) {
+    return this.imod(num.ushln(this.shift));
+  };
 
-  var signature = Buffer.allocUnsafe(6 + lenR + lenS)
+  Mont.prototype.convertFrom = function convertFrom (num) {
+    var r = this.imod(num.mul(this.rinv));
+    r.red = null;
+    return r;
+  };
 
-  // 0x30 [total-length] 0x02 [R-length] [R] 0x02 [S-length] [S]
-  signature[0] = 0x30
-  signature[1] = signature.length - 2
-  signature[2] = 0x02
-  signature[3] = r.length
-  r.copy(signature, 4)
-  signature[4 + lenR] = 0x02
-  signature[5 + lenR] = s.length
-  s.copy(signature, 6 + lenR)
+  Mont.prototype.imul = function imul (a, b) {
+    if (a.isZero() || b.isZero()) {
+      a.words[0] = 0;
+      a.length = 1;
+      return a;
+    }
+
+    var t = a.imul(b);
+    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+    var u = t.isub(c).iushrn(this.shift);
+    var res = u;
+
+    if (u.cmp(this.m) >= 0) {
+      res = u.isub(this.m);
+    } else if (u.cmpn(0) < 0) {
+      res = u.iadd(this.m);
+    }
+
+    return res._forceRed(this);
+  };
+
+  Mont.prototype.mul = function mul (a, b) {
+    if (a.isZero() || b.isZero()) return new BN(0)._forceRed(this);
+
+    var t = a.mul(b);
+    var c = t.maskn(this.shift).mul(this.minv).imaskn(this.shift).mul(this.m);
+    var u = t.isub(c).iushrn(this.shift);
+    var res = u;
+    if (u.cmp(this.m) >= 0) {
+      res = u.isub(this.m);
+    } else if (u.cmpn(0) < 0) {
+      res = u.iadd(this.m);
+    }
+
+    return res._forceRed(this);
+  };
+
+  Mont.prototype.invm = function invm (a) {
+    // (AR)^-1 * R^2 = (A^-1 * R^-1) * R^2 = A^-1 * R
+    var res = this.imod(a._invmp(this.m).mul(this.r2));
+    return res._forceRed(this);
+  };
+})(typeof module === 'undefined' || module, this);
 
-  return signature
-}
+},{}],82:[function(require,module,exports){
+var r;
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
+module.exports = function rand(len) {
+  if (!r)
+    r = new Rand(null);
+
+  return r.generate(len);
+};
+
+function Rand(rand) {
+  this.rand = rand;
 }
+module.exports.Rand = Rand;
 
-},{"safe-buffer":98}],40:[function(require,module,exports){
-module.exports={
-  "OP_FALSE": 0,
-  "OP_0": 0,
-  "OP_PUSHDATA1": 76,
-  "OP_PUSHDATA2": 77,
-  "OP_PUSHDATA4": 78,
-  "OP_1NEGATE": 79,
-  "OP_RESERVED": 80,
-  "OP_1": 81,
-  "OP_TRUE": 81,
-  "OP_2": 82,
-  "OP_3": 83,
-  "OP_4": 84,
-  "OP_5": 85,
-  "OP_6": 86,
-  "OP_7": 87,
-  "OP_8": 88,
-  "OP_9": 89,
-  "OP_10": 90,
-  "OP_11": 91,
-  "OP_12": 92,
-  "OP_13": 93,
-  "OP_14": 94,
-  "OP_15": 95,
-  "OP_16": 96,
+Rand.prototype.generate = function generate(len) {
+  return this._rand(len);
+};
 
-  "OP_NOP": 97,
-  "OP_VER": 98,
-  "OP_IF": 99,
-  "OP_NOTIF": 100,
-  "OP_VERIF": 101,
-  "OP_VERNOTIF": 102,
-  "OP_ELSE": 103,
-  "OP_ENDIF": 104,
-  "OP_VERIFY": 105,
-  "OP_RETURN": 106,
+// Emulate crypto API using randy
+Rand.prototype._rand = function _rand(n) {
+  if (this.rand.getBytes)
+    return this.rand.getBytes(n);
 
-  "OP_TOALTSTACK": 107,
-  "OP_FROMALTSTACK": 108,
-  "OP_2DROP": 109,
-  "OP_2DUP": 110,
-  "OP_3DUP": 111,
-  "OP_2OVER": 112,
-  "OP_2ROT": 113,
-  "OP_2SWAP": 114,
-  "OP_IFDUP": 115,
-  "OP_DEPTH": 116,
-  "OP_DROP": 117,
-  "OP_DUP": 118,
-  "OP_NIP": 119,
-  "OP_OVER": 120,
-  "OP_PICK": 121,
-  "OP_ROLL": 122,
-  "OP_ROT": 123,
-  "OP_SWAP": 124,
-  "OP_TUCK": 125,
+  var res = new Uint8Array(n);
+  for (var i = 0; i < res.length; i++)
+    res[i] = this.rand.getByte();
+  return res;
+};
 
-  "OP_CAT": 126,
-  "OP_SUBSTR": 127,
-  "OP_LEFT": 128,
-  "OP_RIGHT": 129,
-  "OP_SIZE": 130,
+if (typeof self === 'object') {
+  if (self.crypto && self.crypto.getRandomValues) {
+    // Modern browsers
+    Rand.prototype._rand = function _rand(n) {
+      var arr = new Uint8Array(n);
+      self.crypto.getRandomValues(arr);
+      return arr;
+    };
+  } else if (self.msCrypto && self.msCrypto.getRandomValues) {
+    // IE
+    Rand.prototype._rand = function _rand(n) {
+      var arr = new Uint8Array(n);
+      self.msCrypto.getRandomValues(arr);
+      return arr;
+    };
 
-  "OP_INVERT": 131,
-  "OP_AND": 132,
-  "OP_OR": 133,
-  "OP_XOR": 134,
-  "OP_EQUAL": 135,
-  "OP_EQUALVERIFY": 136,
-  "OP_RESERVED1": 137,
-  "OP_RESERVED2": 138,
+  // Safari's WebWorkers do not have `crypto`
+  } else if (typeof window === 'object') {
+    // Old junk
+    Rand.prototype._rand = function() {
+      throw new Error('Not implemented yet');
+    };
+  }
+} else {
+  // Node.js or Web worker with no crypto support
+  try {
+    var crypto = require('crypto');
+    if (typeof crypto.randomBytes !== 'function')
+      throw new Error('Not supported');
 
-  "OP_1ADD": 139,
-  "OP_1SUB": 140,
-  "OP_2MUL": 141,
-  "OP_2DIV": 142,
-  "OP_NEGATE": 143,
-  "OP_ABS": 144,
-  "OP_NOT": 145,
-  "OP_0NOTEQUAL": 146,
-  "OP_ADD": 147,
-  "OP_SUB": 148,
-  "OP_MUL": 149,
-  "OP_DIV": 150,
-  "OP_MOD": 151,
-  "OP_LSHIFT": 152,
-  "OP_RSHIFT": 153,
+    Rand.prototype._rand = function _rand(n) {
+      return crypto.randomBytes(n);
+    };
+  } catch (e) {
+  }
+}
 
-  "OP_BOOLAND": 154,
-  "OP_BOOLOR": 155,
-  "OP_NUMEQUAL": 156,
-  "OP_NUMEQUALVERIFY": 157,
-  "OP_NUMNOTEQUAL": 158,
-  "OP_LESSTHAN": 159,
-  "OP_GREATERTHAN": 160,
-  "OP_LESSTHANOREQUAL": 161,
-  "OP_GREATERTHANOREQUAL": 162,
-  "OP_MIN": 163,
-  "OP_MAX": 164,
+},{"crypto":3}],83:[function(require,module,exports){
+var basex = require('base-x')
+var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
 
-  "OP_WITHIN": 165,
+module.exports = basex(ALPHABET)
 
-  "OP_RIPEMD160": 166,
-  "OP_SHA1": 167,
-  "OP_SHA256": 168,
-  "OP_HASH160": 169,
-  "OP_HASH256": 170,
-  "OP_CODESEPARATOR": 171,
-  "OP_CHECKSIG": 172,
-  "OP_CHECKSIGVERIFY": 173,
-  "OP_CHECKMULTISIG": 174,
-  "OP_CHECKMULTISIGVERIFY": 175,
+},{"base-x":35}],84:[function(require,module,exports){
+(function (Buffer){
+'use strict'
 
-  "OP_NOP1": 176,
-  "OP_NOP2": 177,
-  "OP_CHECKLOCKTIMEVERIFY": 177,
+var base58 = require('bs58')
 
-  "OP_NOP3": 178,
-  "OP_NOP4": 179,
-  "OP_NOP5": 180,
-  "OP_NOP6": 181,
-  "OP_NOP7": 182,
-  "OP_NOP8": 183,
-  "OP_NOP9": 184,
-  "OP_NOP10": 185,
+module.exports = function (checksumFn) {
+  // Encode a buffer as a base58-check encoded string
+  function encode (payload) {
+    var checksum = checksumFn(payload)
 
-  "OP_PUBKEYHASH": 253,
-  "OP_PUBKEY": 254,
-  "OP_INVALIDOPCODE": 255
-}
+    return base58.encode(Buffer.concat([
+      payload,
+      checksum
+    ], payload.length + 4))
+  }
 
-},{}],41:[function(require,module,exports){
-var OPS = require('./index.json')
+  function decodeRaw (buffer) {
+    var payload = buffer.slice(0, -4)
+    var checksum = buffer.slice(-4)
+    var newChecksum = checksumFn(payload)
 
-var map = {}
-for (var op in OPS) {
-  var code = OPS[op]
-  map[code] = op
-}
+    if (checksum[0] ^ newChecksum[0] |
+        checksum[1] ^ newChecksum[1] |
+        checksum[2] ^ newChecksum[2] |
+        checksum[3] ^ newChecksum[3]) return
 
-module.exports = map
+    return payload
+  }
 
-},{"./index.json":40}],42:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var bs58check = require('bs58check')
-var bscript = require('./script')
-var networks = require('./networks')
-var typeforce = require('typeforce')
-var types = require('./types')
+  // Decode a base58-check encoded string to a buffer, no result if checksum is wrong
+  function decodeUnsafe (string) {
+    var buffer = base58.decodeUnsafe(string)
+    if (!buffer) return
 
-function fromBase58Check (address) {
-  var payload = bs58check.decode(address)
-  if (payload.length < 21) throw new TypeError(address + ' is too short')
-  if (payload.length > 21) throw new TypeError(address + ' is too long')
+    return decodeRaw(buffer)
+  }
 
-  var version = payload.readUInt8(0)
-  var hash = payload.slice(1)
+  function decode (string) {
+    var buffer = base58.decode(string)
+    var payload = decodeRaw(buffer, checksumFn)
+    if (!payload) throw new Error('Invalid checksum')
+    return payload
+  }
 
-  return { hash: hash, version: version }
+  return {
+    encode: encode,
+    decode: decode,
+    decodeUnsafe: decodeUnsafe
+  }
 }
 
-function toBase58Check (hash, version) {
-  typeforce(types.tuple(types.Hash160bit, types.UInt8), arguments)
+}).call(this,require("buffer").Buffer)
+},{"bs58":83,"buffer":5}],85:[function(require,module,exports){
+'use strict'
 
-  var payload = Buffer.allocUnsafe(21)
-  payload.writeUInt8(version, 0)
-  hash.copy(payload, 1)
+var createHash = require('create-hash')
+var bs58checkBase = require('./base')
 
-  return bs58check.encode(payload)
+// SHA256(SHA256(buffer))
+function sha256x2 (buffer) {
+  var tmp = createHash('sha256').update(buffer).digest()
+  return createHash('sha256').update(tmp).digest()
 }
 
-function fromOutputScript (outputScript, network) {
-  network = network || networks.bitcoin
+module.exports = bs58checkBase(sha256x2)
 
-  if (bscript.pubKeyHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(3, 23), network.pubKeyHash)
-  if (bscript.scriptHash.output.check(outputScript)) return toBase58Check(bscript.compile(outputScript).slice(2, 22), network.scriptHash)
+},{"./base":84,"create-hash":87}],86:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+var Transform = require('stream').Transform
+var StringDecoder = require('string_decoder').StringDecoder
+var inherits = require('inherits')
 
-  throw new Error(bscript.toASM(outputScript) + ' has no matching Address')
+function CipherBase (hashMode) {
+  Transform.call(this)
+  this.hashMode = typeof hashMode === 'string'
+  if (this.hashMode) {
+    this[hashMode] = this._finalOrDigest
+  } else {
+    this.final = this._finalOrDigest
+  }
+  if (this._final) {
+    this.__final = this._final
+    this._final = null
+  }
+  this._decoder = null
+  this._encoding = null
 }
+inherits(CipherBase, Transform)
 
-function toOutputScript (address, network) {
-  network = network || networks.bitcoin
+CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
+  if (typeof data === 'string') {
+    data = Buffer.from(data, inputEnc)
+  }
 
-  var decode = fromBase58Check(address)
-  if (decode.version === network.pubKeyHash) return bscript.pubKeyHash.output.encode(decode.hash)
-  if (decode.version === network.scriptHash) return bscript.scriptHash.output.encode(decode.hash)
+  var outData = this._update(data)
+  if (this.hashMode) return this
 
-  throw new Error(address + ' has no matching Script')
-}
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc)
+  }
 
-module.exports = {
-  fromBase58Check: fromBase58Check,
-  fromOutputScript: fromOutputScript,
-  toBase58Check: toBase58Check,
-  toOutputScript: toOutputScript
+  return outData
 }
 
-},{"./networks":51,"./script":52,"./types":78,"bs58check":80,"safe-buffer":98,"typeforce":109}],43:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var bcrypto = require('./crypto')
-var fastMerkleRoot = require('merkle-lib/fastRoot')
-var typeforce = require('typeforce')
-var types = require('./types')
-var varuint = require('varuint-bitcoin')
+CipherBase.prototype.setAutoPadding = function () {}
+CipherBase.prototype.getAuthTag = function () {
+  throw new Error('trying to get auth tag in unsupported state')
+}
 
-var Transaction = require('./transaction')
+CipherBase.prototype.setAuthTag = function () {
+  throw new Error('trying to set auth tag in unsupported state')
+}
 
-function Block () {
-  this.version = 1
-  this.prevHash = null
-  this.merkleRoot = null
-  this.timestamp = 0
-  this.bits = 0
-  this.nonce = 0
+CipherBase.prototype.setAAD = function () {
+  throw new Error('trying to set aad in unsupported state')
 }
 
-Block.fromBuffer = function (buffer) {
-  if (buffer.length < 80) throw new Error('Buffer too small (< 80 bytes)')
+CipherBase.prototype._transform = function (data, _, next) {
+  var err
+  try {
+    if (this.hashMode) {
+      this._update(data)
+    } else {
+      this.push(this._update(data))
+    }
+  } catch (e) {
+    err = e
+  } finally {
+    next(err)
+  }
+}
+CipherBase.prototype._flush = function (done) {
+  var err
+  try {
+    this.push(this.__final())
+  } catch (e) {
+    err = e
+  }
 
-  var offset = 0
-  function readSlice (n) {
-    offset += n
-    return buffer.slice(offset - n, offset)
+  done(err)
+}
+CipherBase.prototype._finalOrDigest = function (outputEnc) {
+  var outData = this.__final() || Buffer.alloc(0)
+  if (outputEnc) {
+    outData = this._toString(outData, outputEnc, true)
   }
+  return outData
+}
 
-  function readUInt32 () {
-    var i = buffer.readUInt32LE(offset)
-    offset += 4
-    return i
+CipherBase.prototype._toString = function (value, enc, fin) {
+  if (!this._decoder) {
+    this._decoder = new StringDecoder(enc)
+    this._encoding = enc
   }
 
-  function readInt32 () {
-    var i = buffer.readInt32LE(offset)
-    offset += 4
-    return i
+  if (this._encoding !== enc) throw new Error('can\'t switch encodings')
+
+  var out = this._decoder.write(value)
+  if (fin) {
+    out += this._decoder.end()
   }
 
-  var block = new Block()
-  block.version = readInt32()
-  block.prevHash = readSlice(32)
-  block.merkleRoot = readSlice(32)
-  block.timestamp = readUInt32()
-  block.bits = readUInt32()
-  block.nonce = readUInt32()
+  return out
+}
 
-  if (buffer.length === 80) return block
+module.exports = CipherBase
 
-  function readVarInt () {
-    var vi = varuint.decode(buffer, offset)
-    offset += varuint.decode.bytes
-    return vi
-  }
+},{"inherits":121,"safe-buffer":128,"stream":28,"string_decoder":29}],87:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var inherits = require('inherits')
+var md5 = require('./md5')
+var RIPEMD160 = require('ripemd160')
+var sha = require('sha.js')
 
-  function readTransaction () {
-    var tx = Transaction.fromBuffer(buffer.slice(offset), true)
-    offset += tx.byteLength()
-    return tx
-  }
+var Base = require('cipher-base')
 
-  var nTransactions = readVarInt()
-  block.transactions = []
+function HashNoConstructor (hash) {
+  Base.call(this, 'digest')
 
-  for (var i = 0; i < nTransactions; ++i) {
-    var tx = readTransaction()
-    block.transactions.push(tx)
-  }
+  this._hash = hash
+  this.buffers = []
+}
 
-  return block
+inherits(HashNoConstructor, Base)
+
+HashNoConstructor.prototype._update = function (data) {
+  this.buffers.push(data)
 }
 
-Block.prototype.byteLength = function (headersOnly) {
-  if (headersOnly || !this.transactions) return 80
+HashNoConstructor.prototype._final = function () {
+  var buf = Buffer.concat(this.buffers)
+  var r = this._hash(buf)
+  this.buffers = null
 
-  return 80 + varuint.encodingLength(this.transactions.length) + this.transactions.reduce(function (a, x) {
-    return a + x.byteLength()
-  }, 0)
+  return r
 }
 
-Block.fromHex = function (hex) {
-  return Block.fromBuffer(Buffer.from(hex, 'hex'))
+function Hash (hash) {
+  Base.call(this, 'digest')
+
+  this._hash = hash
 }
 
-Block.prototype.getHash = function () {
-  return bcrypto.hash256(this.toBuffer(true))
+inherits(Hash, Base)
+
+Hash.prototype._update = function (data) {
+  this._hash.update(data)
 }
 
-Block.prototype.getId = function () {
-  return this.getHash().reverse().toString('hex')
+Hash.prototype._final = function () {
+  return this._hash.digest()
 }
 
-Block.prototype.getUTCDate = function () {
-  var date = new Date(0) // epoch
-  date.setUTCSeconds(this.timestamp)
+module.exports = function createHash (alg) {
+  alg = alg.toLowerCase()
+  if (alg === 'md5') return new HashNoConstructor(md5)
+  if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160())
 
-  return date
+  return new Hash(sha(alg))
 }
 
-// TODO: buffer, offset compatibility
-Block.prototype.toBuffer = function (headersOnly) {
-  var buffer = Buffer.allocUnsafe(this.byteLength(headersOnly))
+}).call(this,require("buffer").Buffer)
+},{"./md5":89,"buffer":5,"cipher-base":86,"inherits":121,"ripemd160":127,"sha.js":130}],88:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var intSize = 4
+var zeroBuffer = new Buffer(intSize)
+zeroBuffer.fill(0)
 
-  var offset = 0
-  function writeSlice (slice) {
-    slice.copy(buffer, offset)
-    offset += slice.length
+var charSize = 8
+var hashSize = 16
+
+function toArray (buf) {
+  if ((buf.length % intSize) !== 0) {
+    var len = buf.length + (intSize - (buf.length % intSize))
+    buf = Buffer.concat([buf, zeroBuffer], len)
   }
 
-  function writeInt32 (i) {
-    buffer.writeInt32LE(i, offset)
-    offset += 4
+  var arr = new Array(buf.length >>> 2)
+  for (var i = 0, j = 0; i < buf.length; i += intSize, j++) {
+    arr[j] = buf.readInt32LE(i)
   }
-  function writeUInt32 (i) {
-    buffer.writeUInt32LE(i, offset)
-    offset += 4
+
+  return arr
+}
+
+module.exports = function hash (buf, fn) {
+  var arr = fn(toArray(buf), buf.length * charSize)
+  buf = new Buffer(hashSize)
+  for (var i = 0; i < arr.length; i++) {
+    buf.writeInt32LE(arr[i], i << 2, true)
   }
+  return buf
+}
 
-  writeInt32(this.version)
-  writeSlice(this.prevHash)
-  writeSlice(this.merkleRoot)
-  writeUInt32(this.timestamp)
-  writeUInt32(this.bits)
-  writeUInt32(this.nonce)
+}).call(this,require("buffer").Buffer)
+},{"buffer":5}],89:[function(require,module,exports){
+'use strict'
+/*
+ * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
+ * Digest Algorithm, as defined in RFC 1321.
+ * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
+ * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
+ * Distributed under the BSD License
+ * See http://pajhome.org.uk/crypt/md5 for more info.
+ */
+
+var makeHash = require('./make-hash')
+
+/*
+ * Calculate the MD5 of an array of little-endian words, and a bit length
+ */
+function core_md5 (x, len) {
+  /* append padding */
+  x[len >> 5] |= 0x80 << ((len) % 32)
+  x[(((len + 64) >>> 9) << 4) + 14] = len
+
+  var a = 1732584193
+  var b = -271733879
+  var c = -1732584194
+  var d = 271733878
+
+  for (var i = 0; i < x.length; i += 16) {
+    var olda = a
+    var oldb = b
+    var oldc = c
+    var oldd = d
+
+    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936)
+    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586)
+    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819)
+    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330)
+    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897)
+    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426)
+    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341)
+    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983)
+    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416)
+    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417)
+    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063)
+    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162)
+    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682)
+    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101)
+    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290)
+    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329)
+
+    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510)
+    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632)
+    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713)
+    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302)
+    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691)
+    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083)
+    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335)
+    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848)
+    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438)
+    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690)
+    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961)
+    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501)
+    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467)
+    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784)
+    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473)
+    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734)
 
-  if (headersOnly || !this.transactions) return buffer
+    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558)
+    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463)
+    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562)
+    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556)
+    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060)
+    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353)
+    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632)
+    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640)
+    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174)
+    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222)
+    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979)
+    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189)
+    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487)
+    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835)
+    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520)
+    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651)
 
-  varuint.encode(this.transactions.length, buffer, offset)
-  offset += varuint.encode.bytes
+    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844)
+    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415)
+    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905)
+    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055)
+    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571)
+    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606)
+    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523)
+    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799)
+    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359)
+    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744)
+    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380)
+    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649)
+    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070)
+    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379)
+    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259)
+    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551)
 
-  this.transactions.forEach(function (tx) {
-    var txSize = tx.byteLength() // TODO: extract from toBuffer?
-    tx.toBuffer(buffer, offset)
-    offset += txSize
-  })
+    a = safe_add(a, olda)
+    b = safe_add(b, oldb)
+    c = safe_add(c, oldc)
+    d = safe_add(d, oldd)
+  }
 
-  return buffer
+  return [a, b, c, d]
 }
 
-Block.prototype.toHex = function (headersOnly) {
-  return this.toBuffer(headersOnly).toString('hex')
+/*
+ * These functions implement the four basic operations the algorithm uses.
+ */
+function md5_cmn (q, a, b, x, s, t) {
+  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
 }
 
-Block.calculateTarget = function (bits) {
-  var exponent = ((bits & 0xff000000) >> 24) - 3
-  var mantissa = bits & 0x007fffff
-  var target = Buffer.alloc(32, 0)
-  target.writeUInt32BE(mantissa, 28 - exponent)
-  return target
+function md5_ff (a, b, c, d, x, s, t) {
+  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
 }
 
-Block.calculateMerkleRoot = function (transactions) {
-  typeforce([{ getHash: types.Function }], transactions)
-  if (transactions.length === 0) throw TypeError('Cannot compute merkle root for zero transactions')
-
-  var hashes = transactions.map(function (transaction) {
-    return transaction.getHash()
-  })
-
-  return fastMerkleRoot(hashes, bcrypto.hash256)
+function md5_gg (a, b, c, d, x, s, t) {
+  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
 }
 
-Block.prototype.checkMerkleRoot = function () {
-  if (!this.transactions) return false
-
-  var actualMerkleRoot = Block.calculateMerkleRoot(this.transactions)
-  return this.merkleRoot.compare(actualMerkleRoot) === 0
+function md5_hh (a, b, c, d, x, s, t) {
+  return md5_cmn(b ^ c ^ d, a, b, x, s, t)
 }
 
-Block.prototype.checkProofOfWork = function () {
-  var hash = this.getHash().reverse()
-  var target = Block.calculateTarget(this.bits)
-
-  return hash.compare(target) <= 0
+function md5_ii (a, b, c, d, x, s, t) {
+  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
 }
 
-module.exports = Block
-
-},{"./crypto":45,"./transaction":76,"./types":78,"merkle-lib/fastRoot":94,"safe-buffer":98,"typeforce":109,"varuint-bitcoin":111}],44:[function(require,module,exports){
-var pushdata = require('pushdata-bitcoin')
-var varuint = require('varuint-bitcoin')
-
-// https://github.com/feross/buffer/blob/master/index.js#L1127
-function verifuint (value, max) {
-  if (typeof value !== 'number') throw new Error('cannot write a non-number as a number')
-  if (value < 0) throw new Error('specified a negative value for writing an unsigned value')
-  if (value > max) throw new Error('RangeError: value out of range')
-  if (Math.floor(value) !== value) throw new Error('value has a fractional component')
+/*
+ * Add integers, wrapping at 2^32. This uses 16-bit operations internally
+ * to work around bugs in some JS interpreters.
+ */
+function safe_add (x, y) {
+  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
+  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
+  return (msw << 16) | (lsw & 0xFFFF)
 }
 
-function readUInt64LE (buffer, offset) {
-  var a = buffer.readUInt32LE(offset)
-  var b = buffer.readUInt32LE(offset + 4)
-  b *= 0x100000000
-
-  verifuint(b + a, 0x001fffffffffffff)
+/*
+ * Bitwise rotate a 32-bit number to the left.
+ */
+function bit_rol (num, cnt) {
+  return (num << cnt) | (num >>> (32 - cnt))
+}
 
-  return b + a
+module.exports = function md5 (buf) {
+  return makeHash(buf, core_md5)
 }
 
-function writeUInt64LE (buffer, value, offset) {
-  verifuint(value, 0x001fffffffffffff)
+},{"./make-hash":88}],90:[function(require,module,exports){
+'use strict'
+var inherits = require('inherits')
+var Legacy = require('./legacy')
+var Base = require('cipher-base')
+var Buffer = require('safe-buffer').Buffer
+var md5 = require('create-hash/md5')
+var RIPEMD160 = require('ripemd160')
 
-  buffer.writeInt32LE(value & -1, offset)
-  buffer.writeUInt32LE(Math.floor(value / 0x100000000), offset + 4)
-  return offset + 8
-}
+var sha = require('sha.js')
 
-// TODO: remove in 4.0.0?
-function readVarInt (buffer, offset) {
-  var result = varuint.decode(buffer, offset)
+var ZEROS = Buffer.alloc(128)
 
-  return {
-    number: result,
-    size: varuint.decode.bytes
+function Hmac (alg, key) {
+  Base.call(this, 'digest')
+  if (typeof key === 'string') {
+    key = Buffer.from(key)
   }
-}
-
-// TODO: remove in 4.0.0?
-function writeVarInt (buffer, number, offset) {
-  varuint.encode(number, buffer, offset)
-  return varuint.encode.bytes
-}
 
-module.exports = {
-  pushDataSize: pushdata.encodingLength,
-  readPushDataInt: pushdata.decode,
-  readUInt64LE: readUInt64LE,
-  readVarInt: readVarInt,
-  varIntBuffer: varuint.encode,
-  varIntSize: varuint.encodingLength,
-  writePushDataInt: pushdata.encode,
-  writeUInt64LE: writeUInt64LE,
-  writeVarInt: writeVarInt
-}
+  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
 
-},{"pushdata-bitcoin":95,"varuint-bitcoin":111}],45:[function(require,module,exports){
-var createHash = require('create-hash')
+  this._alg = alg
+  this._key = key
+  if (key.length > blocksize) {
+    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
+    key = hash.update(key).digest()
+  } else if (key.length < blocksize) {
+    key = Buffer.concat([key, ZEROS], blocksize)
+  }
 
-function ripemd160 (buffer) {
-  return createHash('rmd160').update(buffer).digest()
-}
+  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
+  var opad = this._opad = Buffer.allocUnsafe(blocksize)
 
-function sha1 (buffer) {
-  return createHash('sha1').update(buffer).digest()
+  for (var i = 0; i < blocksize; i++) {
+    ipad[i] = key[i] ^ 0x36
+    opad[i] = key[i] ^ 0x5C
+  }
+  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
+  this._hash.update(ipad)
 }
 
-function sha256 (buffer) {
-  return createHash('sha256').update(buffer).digest()
-}
+inherits(Hmac, Base)
 
-function hash160 (buffer) {
-  return ripemd160(sha256(buffer))
+Hmac.prototype._update = function (data) {
+  this._hash.update(data)
 }
 
-function hash256 (buffer) {
-  return sha256(sha256(buffer))
+Hmac.prototype._final = function () {
+  var h = this._hash.digest()
+  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
+  return hash.update(this._opad).update(h).digest()
 }
 
-module.exports = {
-  hash160: hash160,
-  hash256: hash256,
-  ripemd160: ripemd160,
-  sha1: sha1,
-  sha256: sha256
+module.exports = function createHmac (alg, key) {
+  alg = alg.toLowerCase()
+  if (alg === 'rmd160' || alg === 'ripemd160') {
+    return new Hmac('rmd160', key)
+  }
+  if (alg === 'md5') {
+    return new Legacy(md5, key)
+  }
+  return new Hmac(alg, key)
 }
 
-},{"create-hash":82}],46:[function(require,module,exports){
+},{"./legacy":91,"cipher-base":86,"create-hash/md5":89,"inherits":121,"ripemd160":127,"safe-buffer":128,"sha.js":130}],91:[function(require,module,exports){
+'use strict'
+var inherits = require('inherits')
 var Buffer = require('safe-buffer').Buffer
-var createHmac = require('create-hmac')
-var typeforce = require('typeforce')
-var types = require('./types')
-
-var BigInteger = require('bigi')
-var ECSignature = require('./ecsignature')
-
-var ZERO = Buffer.alloc(1, 0)
-var ONE = Buffer.alloc(1, 1)
-
-var ecurve = require('ecurve')
-var secp256k1 = ecurve.getCurveByName('secp256k1')
-
-// https://tools.ietf.org/html/rfc6979#section-3.2
-function deterministicGenerateK (hash, x, checkSig) {
-  typeforce(types.tuple(
-    types.Hash256bit,
-    types.Buffer256bit,
-    types.Function
-  ), arguments)
-
-  // Step A, ignored as hash already provided
-  // Step B
-  // Step C
-  var k = Buffer.alloc(32, 0)
-  var v = Buffer.alloc(32, 1)
 
-  // Step D
-  k = createHmac('sha256', k)
-    .update(v)
-    .update(ZERO)
-    .update(x)
-    .update(hash)
-    .digest()
+var Base = require('cipher-base')
 
-  // Step E
-  v = createHmac('sha256', k).update(v).digest()
+var ZEROS = Buffer.alloc(128)
+var blocksize = 64
 
-  // Step F
-  k = createHmac('sha256', k)
-    .update(v)
-    .update(ONE)
-    .update(x)
-    .update(hash)
-    .digest()
+function Hmac (alg, key) {
+  Base.call(this, 'digest')
+  if (typeof key === 'string') {
+    key = Buffer.from(key)
+  }
 
-  // Step G
-  v = createHmac('sha256', k).update(v).digest()
+  this._alg = alg
+  this._key = key
 
-  // Step H1/H2a, ignored as tlen === qlen (256 bit)
-  // Step H2b
-  v = createHmac('sha256', k).update(v).digest()
+  if (key.length > blocksize) {
+    key = alg(key)
+  } else if (key.length < blocksize) {
+    key = Buffer.concat([key, ZEROS], blocksize)
+  }
 
-  var T = BigInteger.fromBuffer(v)
+  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
+  var opad = this._opad = Buffer.allocUnsafe(blocksize)
 
-  // Step H3, repeat until T is within the interval [1, n - 1] and is suitable for ECDSA
-  while (T.signum() <= 0 || T.compareTo(secp256k1.n) >= 0 || !checkSig(T)) {
-    k = createHmac('sha256', k)
-      .update(v)
-      .update(ZERO)
-      .digest()
+  for (var i = 0; i < blocksize; i++) {
+    ipad[i] = key[i] ^ 0x36
+    opad[i] = key[i] ^ 0x5C
+  }
 
-    v = createHmac('sha256', k).update(v).digest()
+  this._hash = [ipad]
+}
 
-    // Step H1/H2a, again, ignored as tlen === qlen (256 bit)
-    // Step H2b again
-    v = createHmac('sha256', k).update(v).digest()
-    T = BigInteger.fromBuffer(v)
-  }
+inherits(Hmac, Base)
 
-  return T
+Hmac.prototype._update = function (data) {
+  this._hash.push(data)
 }
 
-var N_OVER_TWO = secp256k1.n.shiftRight(1)
+Hmac.prototype._final = function () {
+  var h = this._alg(Buffer.concat(this._hash))
+  return this._alg(Buffer.concat([this._opad, h]))
+}
+module.exports = Hmac
 
-function sign (hash, d) {
-  typeforce(types.tuple(types.Hash256bit, types.BigInt), arguments)
+},{"cipher-base":86,"inherits":121,"safe-buffer":128}],92:[function(require,module,exports){
+var assert = require('assert')
+var BigInteger = require('bigi')
 
-  var x = d.toBuffer(32)
-  var e = BigInteger.fromBuffer(hash)
-  var n = secp256k1.n
-  var G = secp256k1.G
+var Point = require('./point')
 
-  var r, s
-  deterministicGenerateK(hash, x, function (k) {
-    var Q = G.multiply(k)
+function Curve (p, a, b, Gx, Gy, n, h) {
+  this.p = p
+  this.a = a
+  this.b = b
+  this.G = Point.fromAffine(this, Gx, Gy)
+  this.n = n
+  this.h = h
 
-    if (secp256k1.isInfinity(Q)) return false
+  this.infinity = new Point(this, null, null, BigInteger.ZERO)
 
-    r = Q.affineX.mod(n)
-    if (r.signum() === 0) return false
+  // result caching
+  this.pOverFour = p.add(BigInteger.ONE).shiftRight(2)
 
-    s = k.modInverse(n).multiply(e.add(d.multiply(r))).mod(n)
-    if (s.signum() === 0) return false
+  // determine size of p in bytes
+  this.pLength = Math.floor((this.p.bitLength() + 7) / 8)
+}
 
-    return true
-  })
+Curve.prototype.pointFromX = function (isOdd, x) {
+  var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p)
+  var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves
 
-  // enforce low S values, see bip62: 'low s values in signatures'
-  if (s.compareTo(N_OVER_TWO) > 0) {
-    s = n.subtract(s)
+  var y = beta
+  if (beta.isEven() ^ !isOdd) {
+    y = this.p.subtract(y) // -y % p
   }
 
-  return new ECSignature(r, s)
+  return Point.fromAffine(this, x, y)
 }
 
-function verify (hash, signature, Q) {
-  typeforce(types.tuple(
-    types.Hash256bit,
-    types.ECSignature,
-    types.ECPoint
-  ), arguments)
-
-  var n = secp256k1.n
-  var G = secp256k1.G
+Curve.prototype.isInfinity = function (Q) {
+  if (Q === this.infinity) return true
 
-  var r = signature.r
-  var s = signature.s
+  return Q.z.signum() === 0 && Q.y.signum() !== 0
+}
 
-  // 1.4.1 Enforce r and s are both integers in the interval [1, n − 1]
-  if (r.signum() <= 0 || r.compareTo(n) >= 0) return false
-  if (s.signum() <= 0 || s.compareTo(n) >= 0) return false
+Curve.prototype.isOnCurve = function (Q) {
+  if (this.isInfinity(Q)) return true
 
-  // 1.4.2 H = Hash(M), already done by the user
-  // 1.4.3 e = H
-  var e = BigInteger.fromBuffer(hash)
+  var x = Q.affineX
+  var y = Q.affineY
+  var a = this.a
+  var b = this.b
+  var p = this.p
 
-  // Compute s^-1
-  var sInv = s.modInverse(n)
+  // Check that xQ and yQ are integers in the interval [0, p - 1]
+  if (x.signum() < 0 || x.compareTo(p) >= 0) return false
+  if (y.signum() < 0 || y.compareTo(p) >= 0) return false
 
-  // 1.4.4 Compute u1 = es^−1 mod n
-  //               u2 = rs^−1 mod n
-  var u1 = e.multiply(sInv).mod(n)
-  var u2 = r.multiply(sInv).mod(n)
+  // and check that y^2 = x^3 + ax + b (mod p)
+  var lhs = y.square().mod(p)
+  var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p)
+  return lhs.equals(rhs)
+}
 
-  // 1.4.5 Compute R = (xR, yR)
-  //               R = u1G + u2Q
-  var R = G.multiplyTwo(u1, Q, u2)
+/**
+ * Validate an elliptic curve point.
+ *
+ * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
+ */
+Curve.prototype.validate = function (Q) {
+  // Check Q != O
+  assert(!this.isInfinity(Q), 'Point is at infinity')
+  assert(this.isOnCurve(Q), 'Point is not on the curve')
 
-  // 1.4.5 (cont.) Enforce R is not at infinity
-  if (secp256k1.isInfinity(R)) return false
+  // Check nQ = O (where Q is a scalar multiple of G)
+  var nQ = Q.multiply(this.n)
+  assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G')
 
-  // 1.4.6 Convert the field element R.x to an integer
-  var xR = R.affineX
+  return true
+}
 
-  // 1.4.7 Set v = xR mod n
-  var v = xR.mod(n)
+module.exports = Curve
 
-  // 1.4.8 If v = r, output "valid", and if v != r, output "invalid"
-  return v.equals(r)
+},{"./point":96,"assert":1,"bigi":39}],93:[function(require,module,exports){
+module.exports={
+  "secp128r1": {
+    "p": "fffffffdffffffffffffffffffffffff",
+    "a": "fffffffdfffffffffffffffffffffffc",
+    "b": "e87579c11079f43dd824993c2cee5ed3",
+    "n": "fffffffe0000000075a30d1b9038a115",
+    "h": "01",
+    "Gx": "161ff7528b899b2d0c28607ca52c5b86",
+    "Gy": "cf5ac8395bafeb13c02da292dded7a83"
+  },
+  "secp160k1": {
+    "p": "fffffffffffffffffffffffffffffffeffffac73",
+    "a": "00",
+    "b": "07",
+    "n": "0100000000000000000001b8fa16dfab9aca16b6b3",
+    "h": "01",
+    "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb",
+    "Gy": "938cf935318fdced6bc28286531733c3f03c4fee"
+  },
+  "secp160r1": {
+    "p": "ffffffffffffffffffffffffffffffff7fffffff",
+    "a": "ffffffffffffffffffffffffffffffff7ffffffc",
+    "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45",
+    "n": "0100000000000000000001f4c8f927aed3ca752257",
+    "h": "01",
+    "Gx": "4a96b5688ef573284664698968c38bb913cbfc82",
+    "Gy": "23a628553168947d59dcc912042351377ac5fb32"
+  },
+  "secp192k1": {
+    "p": "fffffffffffffffffffffffffffffffffffffffeffffee37",
+    "a": "00",
+    "b": "03",
+    "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d",
+    "h": "01",
+    "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d",
+    "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d"
+  },
+  "secp192r1": {
+    "p": "fffffffffffffffffffffffffffffffeffffffffffffffff",
+    "a": "fffffffffffffffffffffffffffffffefffffffffffffffc",
+    "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1",
+    "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831",
+    "h": "01",
+    "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012",
+    "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811"
+  },
+  "secp256k1": {
+    "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f",
+    "a": "00",
+    "b": "07",
+    "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
+    "h": "01",
+    "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
+    "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
+  },
+  "secp256r1": {
+    "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
+    "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
+    "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
+    "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
+    "h": "01",
+    "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
+    "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5"
+  }
 }
 
-module.exports = {
-  deterministicGenerateK: deterministicGenerateK,
-  sign: sign,
-  verify: verify,
+},{}],94:[function(require,module,exports){
+var Point = require('./point')
+var Curve = require('./curve')
 
-  // TODO: remove
-  __curve: secp256k1
+var getCurveByName = require('./names')
+
+module.exports = {
+  Curve: Curve,
+  Point: Point,
+  getCurveByName: getCurveByName
 }
 
-},{"./ecsignature":48,"./types":78,"bigi":37,"create-hmac":85,"ecurve":89,"safe-buffer":98,"typeforce":109}],47:[function(require,module,exports){
-var baddress = require('./address')
-var bcrypto = require('./crypto')
-var ecdsa = require('./ecdsa')
-var randomBytes = require('randombytes')
-var typeforce = require('typeforce')
-var types = require('./types')
-var wif = require('wif')
-
-var NETWORKS = require('./networks')
+},{"./curve":92,"./names":95,"./point":96}],95:[function(require,module,exports){
 var BigInteger = require('bigi')
 
-var ecurve = require('ecurve')
-var secp256k1 = ecdsa.__curve
+var curves = require('./curves.json')
+var Curve = require('./curve')
 
-function ECPair (d, Q, options) {
-  if (options) {
-    typeforce({
-      compressed: types.maybe(types.Boolean),
-      network: types.maybe(types.Network)
-    }, options)
-  }
+function getCurveByName (name) {
+  var curve = curves[name]
+  if (!curve) return null
 
-  options = options || {}
+  var p = new BigInteger(curve.p, 16)
+  var a = new BigInteger(curve.a, 16)
+  var b = new BigInteger(curve.b, 16)
+  var n = new BigInteger(curve.n, 16)
+  var h = new BigInteger(curve.h, 16)
+  var Gx = new BigInteger(curve.Gx, 16)
+  var Gy = new BigInteger(curve.Gy, 16)
 
-  if (d) {
-    if (d.signum() <= 0) throw new Error('Private key must be greater than 0')
-    if (d.compareTo(secp256k1.n) >= 0) throw new Error('Private key must be less than the curve order')
-    if (Q) throw new TypeError('Unexpected publicKey parameter')
+  return new Curve(p, a, b, Gx, Gy, n, h)
+}
 
-    this.d = d
-  } else {
-    typeforce(types.ECPoint, Q)
+module.exports = getCurveByName
 
-    this.__Q = Q
-  }
+},{"./curve":92,"./curves.json":93,"bigi":39}],96:[function(require,module,exports){
+(function (Buffer){
+var assert = require('assert')
+var BigInteger = require('bigi')
 
-  this.compressed = options.compressed === undefined ? true : options.compressed
-  this.network = options.network || NETWORKS.bitcoin
+var THREE = BigInteger.valueOf(3)
+
+function Point (curve, x, y, z) {
+  assert.notStrictEqual(z, undefined, 'Missing Z coordinate')
+
+  this.curve = curve
+  this.x = x
+  this.y = y
+  this.z = z
+  this._zInv = null
+
+  this.compressed = true
 }
 
-Object.defineProperty(ECPair.prototype, 'Q', {
+Object.defineProperty(Point.prototype, 'zInv', {
   get: function () {
-    if (!this.__Q && this.d) {
-      this.__Q = secp256k1.G.multiply(this.d)
+    if (this._zInv === null) {
+      this._zInv = this.z.modInverse(this.curve.p)
     }
 
-    return this.__Q
+    return this._zInv
   }
 })
 
-ECPair.fromPublicKeyBuffer = function (buffer, network) {
-  var Q = ecurve.Point.decodeFrom(secp256k1, buffer)
+Object.defineProperty(Point.prototype, 'affineX', {
+  get: function () {
+    return this.x.multiply(this.zInv).mod(this.curve.p)
+  }
+})
 
-  return new ECPair(null, Q, {
-    compressed: Q.compressed,
-    network: network
-  })
+Object.defineProperty(Point.prototype, 'affineY', {
+  get: function () {
+    return this.y.multiply(this.zInv).mod(this.curve.p)
+  }
+})
+
+Point.fromAffine = function (curve, x, y) {
+  return new Point(curve, x, y, BigInteger.ONE)
 }
 
-ECPair.fromWIF = function (string, network) {
-  var decoded = wif.decode(string)
-  var version = decoded.version
+Point.prototype.equals = function (other) {
+  if (other === this) return true
+  if (this.curve.isInfinity(this)) return this.curve.isInfinity(other)
+  if (this.curve.isInfinity(other)) return this.curve.isInfinity(this)
 
-  // list of networks?
-  if (types.Array(network)) {
-    network = network.filter(function (x) {
-      return version === x.wif
-    }).pop()
+  // u = Y2 * Z1 - Y1 * Z2
+  var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p)
 
-    if (!network) throw new Error('Unknown network version')
+  if (u.signum() !== 0) return false
 
-  // otherwise, assume a network object (or default to bitcoin)
-  } else {
-    network = network || NETWORKS.bitcoin
+  // v = X2 * Z1 - X1 * Z2
+  var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p)
 
-    if (version !== network.wif) throw new Error('Invalid network version')
-  }
+  return v.signum() === 0
+}
 
-  var d = BigInteger.fromBuffer(decoded.privateKey)
+Point.prototype.negate = function () {
+  var y = this.curve.p.subtract(this.y)
 
-  return new ECPair(d, null, {
-    compressed: decoded.compressed,
-    network: network
-  })
+  return new Point(this.curve, this.x, y, this.z)
 }
 
-ECPair.makeRandom = function (options) {
-  options = options || {}
+Point.prototype.add = function (b) {
+  if (this.curve.isInfinity(this)) return b
+  if (this.curve.isInfinity(b)) return this
 
-  var rng = options.rng || randomBytes
+  var x1 = this.x
+  var y1 = this.y
+  var x2 = b.x
+  var y2 = b.y
 
-  var d
-  do {
-    var buffer = rng(32)
-    typeforce(types.Buffer256bit, buffer)
+  // u = Y2 * Z1 - Y1 * Z2
+  var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p)
+  // v = X2 * Z1 - X1 * Z2
+  var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p)
 
-    d = BigInteger.fromBuffer(buffer)
-  } while (d.signum() <= 0 || d.compareTo(secp256k1.n) >= 0)
+  if (v.signum() === 0) {
+    if (u.signum() === 0) {
+      return this.twice() // this == b, so double
+    }
 
-  return new ECPair(d, null, options)
-}
+    return this.curve.infinity // this = -b, so infinity
+  }
 
-ECPair.prototype.getAddress = function () {
-  return baddress.toBase58Check(bcrypto.hash160(this.getPublicKeyBuffer()), this.getNetwork().pubKeyHash)
-}
+  var v2 = v.square()
+  var v3 = v2.multiply(v)
+  var x1v2 = x1.multiply(v2)
+  var zu2 = u.square().multiply(this.z)
 
-ECPair.prototype.getNetwork = function () {
-  return this.network
-}
+  // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
+  var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p)
+  // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
+  var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p)
+  // z3 = v^3 * z1 * z2
+  var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p)
 
-ECPair.prototype.getPublicKeyBuffer = function () {
-  return this.Q.getEncoded(this.compressed)
+  return new Point(this.curve, x3, y3, z3)
 }
 
-ECPair.prototype.sign = function (hash) {
-  if (!this.d) throw new Error('Missing private key')
+Point.prototype.twice = function () {
+  if (this.curve.isInfinity(this)) return this
+  if (this.y.signum() === 0) return this.curve.infinity
 
-  return ecdsa.sign(hash, this.d)
-}
+  var x1 = this.x
+  var y1 = this.y
 
-ECPair.prototype.toWIF = function () {
-  if (!this.d) throw new Error('Missing private key')
+  var y1z1 = y1.multiply(this.z).mod(this.curve.p)
+  var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p)
+  var a = this.curve.a
 
-  return wif.encode(this.network.wif, this.d.toBuffer(32), this.compressed)
-}
+  // w = 3 * x1^2 + a * z1^2
+  var w = x1.square().multiply(THREE)
 
-ECPair.prototype.verify = function (hash, signature) {
-  return ecdsa.verify(hash, signature, this.Q)
+  if (a.signum() !== 0) {
+    w = w.add(this.z.square().multiply(a))
+  }
+
+  w = w.mod(this.curve.p)
+  // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
+  var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p)
+  // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
+  var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p)
+  // z3 = 8 * (y1 * z1)^3
+  var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p)
+
+  return new Point(this.curve, x3, y3, z3)
 }
 
-module.exports = ECPair
+// Simple NAF (Non-Adjacent Form) multiplication algorithm
+// TODO: modularize the multiplication algorithm
+Point.prototype.multiply = function (k) {
+  if (this.curve.isInfinity(this)) return this
+  if (k.signum() === 0) return this.curve.infinity
 
-},{"./address":42,"./crypto":45,"./ecdsa":46,"./networks":51,"./types":78,"bigi":37,"ecurve":89,"randombytes":96,"typeforce":109,"wif":112}],48:[function(require,module,exports){
-(function (Buffer){
-var bip66 = require('bip66')
-var typeforce = require('typeforce')
-var types = require('./types')
+  var e = k
+  var h = e.multiply(THREE)
 
-var BigInteger = require('bigi')
+  var neg = this.negate()
+  var R = this
 
-function ECSignature (r, s) {
-  typeforce(types.tuple(types.BigInt, types.BigInt), arguments)
+  for (var i = h.bitLength() - 2; i > 0; --i) {
+    var hBit = h.testBit(i)
+    var eBit = e.testBit(i)
 
-  this.r = r
-  this.s = s
-}
+    R = R.twice()
 
-ECSignature.parseCompact = function (buffer) {
-  if (buffer.length !== 65) throw new Error('Invalid signature length')
+    if (hBit !== eBit) {
+      R = R.add(hBit ? this : neg)
+    }
+  }
 
-  var flagByte = buffer.readUInt8(0) - 27
-  if (flagByte !== (flagByte & 7)) throw new Error('Invalid signature parameter')
+  return R
+}
 
-  var compressed = !!(flagByte & 4)
-  var recoveryParam = flagByte & 3
+// Compute this*j + x*k (simultaneous multiplication)
+Point.prototype.multiplyTwo = function (j, x, k) {
+  var i = Math.max(j.bitLength(), k.bitLength()) - 1
+  var R = this.curve.infinity
+  var both = this.add(x)
 
-  var r = BigInteger.fromBuffer(buffer.slice(1, 33))
-  var s = BigInteger.fromBuffer(buffer.slice(33))
+  while (i >= 0) {
+    var jBit = j.testBit(i)
+    var kBit = k.testBit(i)
 
-  return {
-    compressed: compressed,
-    i: recoveryParam,
-    signature: new ECSignature(r, s)
+    R = R.twice()
+
+    if (jBit) {
+      if (kBit) {
+        R = R.add(both)
+      } else {
+        R = R.add(this)
+      }
+    } else if (kBit) {
+      R = R.add(x)
+    }
+    --i
   }
+
+  return R
 }
 
-ECSignature.fromDER = function (buffer) {
-  var decode = bip66.decode(buffer)
-  var r = BigInteger.fromDERInteger(decode.r)
-  var s = BigInteger.fromDERInteger(decode.s)
+Point.prototype.getEncoded = function (compressed) {
+  if (compressed == null) compressed = this.compressed
+  if (this.curve.isInfinity(this)) return new Buffer('00', 'hex') // Infinity point encoded is simply '00'
 
-  return new ECSignature(r, s)
-}
+  var x = this.affineX
+  var y = this.affineY
+  var byteLength = this.curve.pLength
+  var buffer
 
-// BIP62: 1 byte hashType flag (only 0x01, 0x02, 0x03, 0x81, 0x82 and 0x83 are allowed)
-ECSignature.parseScriptSignature = function (buffer) {
-  var hashType = buffer.readUInt8(buffer.length - 1)
-  var hashTypeMod = hashType & ~0x80
+  // 0x02/0x03 | X
+  if (compressed) {
+    buffer = new Buffer(1 + byteLength)
+    buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0)
 
-  if (hashTypeMod <= 0x00 || hashTypeMod >= 0x04) throw new Error('Invalid hashType ' + hashType)
+  // 0x04 | X | Y
+  } else {
+    buffer = new Buffer(1 + byteLength + byteLength)
+    buffer.writeUInt8(0x04, 0)
 
-  return {
-    signature: ECSignature.fromDER(buffer.slice(0, -1)),
-    hashType: hashType
+    y.toBuffer(byteLength).copy(buffer, 1 + byteLength)
   }
+
+  x.toBuffer(byteLength).copy(buffer, 1)
+
+  return buffer
 }
 
-ECSignature.prototype.toCompact = function (i, compressed) {
-  if (compressed) {
-    i += 4
-  }
+Point.decodeFrom = function (curve, buffer) {
+  var type = buffer.readUInt8(0)
+  var compressed = (type !== 4)
 
-  i += 27
+  var byteLength = Math.floor((curve.p.bitLength() + 7) / 8)
+  var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength))
 
-  var buffer = Buffer.alloc(65)
-  buffer.writeUInt8(i, 0)
-  this.r.toBuffer(32).copy(buffer, 1)
-  this.s.toBuffer(32).copy(buffer, 33)
+  var Q
+  if (compressed) {
+    assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length')
+    assert(type === 0x02 || type === 0x03, 'Invalid sequence tag')
 
-  return buffer
-}
+    var isOdd = (type === 0x03)
+    Q = curve.pointFromX(isOdd, x)
+  } else {
+    assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length')
 
-ECSignature.prototype.toDER = function () {
-  var r = Buffer.from(this.r.toDERInteger())
-  var s = Buffer.from(this.s.toDERInteger())
+    var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength))
+    Q = Point.fromAffine(curve, x, y)
+  }
 
-  return bip66.encode(r, s)
+  Q.compressed = compressed
+  return Q
 }
 
-ECSignature.prototype.toScriptSignature = function (hashType) {
-  var hashTypeMod = hashType & ~0x80
-  if (hashTypeMod <= 0 || hashTypeMod >= 4) throw new Error('Invalid hashType ' + hashType)
-
-  var hashTypeBuffer = Buffer.alloc(1)
-  hashTypeBuffer.writeUInt8(hashType, 0)
+Point.prototype.toString = function () {
+  if (this.curve.isInfinity(this)) return '(INFINITY)'
 
-  return Buffer.concat([this.toDER(), hashTypeBuffer])
+  return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')'
 }
 
-module.exports = ECSignature
+module.exports = Point
 
 }).call(this,require("buffer").Buffer)
-},{"./types":78,"bigi":37,"bip66":39,"buffer":4,"typeforce":109}],49:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var base58check = require('bs58check')
-var bcrypto = require('./crypto')
-var createHmac = require('create-hmac')
-var typeforce = require('typeforce')
-var types = require('./types')
-var NETWORKS = require('./networks')
+},{"assert":1,"bigi":39,"buffer":5}],97:[function(require,module,exports){
+'use strict';
 
-var BigInteger = require('bigi')
-var ECPair = require('./ecpair')
+var elliptic = exports;
 
-var ecurve = require('ecurve')
-var curve = ecurve.getCurveByName('secp256k1')
+elliptic.version = require('../package.json').version;
+elliptic.utils = require('./elliptic/utils');
+elliptic.rand = require('brorand');
+elliptic.curve = require('./elliptic/curve');
+elliptic.curves = require('./elliptic/curves');
 
-function HDNode (keyPair, chainCode) {
-  typeforce(types.tuple('ECPair', types.Buffer256bit), arguments)
+// Protocols
+elliptic.ec = require('./elliptic/ec');
+elliptic.eddsa = require('./elliptic/eddsa');
 
-  if (!keyPair.compressed) throw new TypeError('BIP32 only allows compressed keyPairs')
+},{"../package.json":112,"./elliptic/curve":100,"./elliptic/curves":103,"./elliptic/ec":104,"./elliptic/eddsa":107,"./elliptic/utils":111,"brorand":82}],98:[function(require,module,exports){
+'use strict';
 
-  this.keyPair = keyPair
-  this.chainCode = chainCode
-  this.depth = 0
-  this.index = 0
-  this.parentFingerprint = 0x00000000
-}
+var BN = require('bn.js');
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var getNAF = utils.getNAF;
+var getJSF = utils.getJSF;
+var assert = utils.assert;
 
-HDNode.HIGHEST_BIT = 0x80000000
-HDNode.LENGTH = 78
-HDNode.MASTER_SECRET = Buffer.from('Bitcoin seed', 'utf8')
+function BaseCurve(type, conf) {
+  this.type = type;
+  this.p = new BN(conf.p, 16);
 
-HDNode.fromSeedBuffer = function (seed, network) {
-  typeforce(types.tuple(types.Buffer, types.maybe(types.Network)), arguments)
+  // Use Montgomery, when there is no fast reduction for the prime
+  this.red = conf.prime ? BN.red(conf.prime) : BN.mont(this.p);
 
-  if (seed.length < 16) throw new TypeError('Seed should be at least 128 bits')
-  if (seed.length > 64) throw new TypeError('Seed should be at most 512 bits')
+  // Useful for many curves
+  this.zero = new BN(0).toRed(this.red);
+  this.one = new BN(1).toRed(this.red);
+  this.two = new BN(2).toRed(this.red);
 
-  var I = createHmac('sha512', HDNode.MASTER_SECRET).update(seed).digest()
-  var IL = I.slice(0, 32)
-  var IR = I.slice(32)
+  // Curve configuration, optional
+  this.n = conf.n && new BN(conf.n, 16);
+  this.g = conf.g && this.pointFromJSON(conf.g, conf.gRed);
 
-  // In case IL is 0 or >= n, the master key is invalid
-  // This is handled by the ECPair constructor
-  var pIL = BigInteger.fromBuffer(IL)
-  var keyPair = new ECPair(pIL, null, {
-    network: network
-  })
+  // Temporary arrays
+  this._wnafT1 = new Array(4);
+  this._wnafT2 = new Array(4);
+  this._wnafT3 = new Array(4);
+  this._wnafT4 = new Array(4);
 
-  return new HDNode(keyPair, IR)
+  // Generalized Greg Maxwell's trick
+  var adjustCount = this.n && this.p.div(this.n);
+  if (!adjustCount || adjustCount.cmpn(100) > 0) {
+    this.redN = null;
+  } else {
+    this._maxwellTrick = true;
+    this.redN = this.n.toRed(this.red);
+  }
 }
+module.exports = BaseCurve;
 
-HDNode.fromSeedHex = function (hex, network) {
-  return HDNode.fromSeedBuffer(Buffer.from(hex, 'hex'), network)
-}
+BaseCurve.prototype.point = function point() {
+  throw new Error('Not implemented');
+};
 
-HDNode.fromBase58 = function (string, networks) {
-  var buffer = base58check.decode(string)
-  if (buffer.length !== 78) throw new Error('Invalid buffer length')
+BaseCurve.prototype.validate = function validate() {
+  throw new Error('Not implemented');
+};
 
-  // 4 bytes: version bytes
-  var version = buffer.readUInt32BE(0)
-  var network
+BaseCurve.prototype._fixedNafMul = function _fixedNafMul(p, k) {
+  assert(p.precomputed);
+  var doubles = p._getDoubles();
 
-  // list of networks?
-  if (Array.isArray(networks)) {
-    network = networks.filter(function (x) {
-      return version === x.bip32.private ||
-             version === x.bip32.public
-    }).pop()
+  var naf = getNAF(k, 1);
+  var I = (1 << (doubles.step + 1)) - (doubles.step % 2 === 0 ? 2 : 1);
+  I /= 3;
 
-    if (!network) throw new Error('Unknown network version')
+  // Translate into more windowed form
+  var repr = [];
+  for (var j = 0; j < naf.length; j += doubles.step) {
+    var nafW = 0;
+    for (var k = j + doubles.step - 1; k >= j; k--)
+      nafW = (nafW << 1) + naf[k];
+    repr.push(nafW);
+  }
 
-  // otherwise, assume a network object (or default to bitcoin)
-  } else {
-    network = networks || NETWORKS.bitcoin
+  var a = this.jpoint(null, null, null);
+  var b = this.jpoint(null, null, null);
+  for (var i = I; i > 0; i--) {
+    for (var j = 0; j < repr.length; j++) {
+      var nafW = repr[j];
+      if (nafW === i)
+        b = b.mixedAdd(doubles.points[j]);
+      else if (nafW === -i)
+        b = b.mixedAdd(doubles.points[j].neg());
+    }
+    a = a.add(b);
   }
+  return a.toP();
+};
 
-  if (version !== network.bip32.private &&
-    version !== network.bip32.public) throw new Error('Invalid network version')
+BaseCurve.prototype._wnafMul = function _wnafMul(p, k) {
+  var w = 4;
+
+  // Precompute window
+  var nafPoints = p._getNAFPoints(w);
+  w = nafPoints.wnd;
+  var wnd = nafPoints.points;
+
+  // Get NAF form
+  var naf = getNAF(k, w);
+
+  // Add `this`*(N+1) for every w-NAF index
+  var acc = this.jpoint(null, null, null);
+  for (var i = naf.length - 1; i >= 0; i--) {
+    // Count zeroes
+    for (var k = 0; i >= 0 && naf[i] === 0; i--)
+      k++;
+    if (i >= 0)
+      k++;
+    acc = acc.dblp(k);
+
+    if (i < 0)
+      break;
+    var z = naf[i];
+    assert(z !== 0);
+    if (p.type === 'affine') {
+      // J +- P
+      if (z > 0)
+        acc = acc.mixedAdd(wnd[(z - 1) >> 1]);
+      else
+        acc = acc.mixedAdd(wnd[(-z - 1) >> 1].neg());
+    } else {
+      // J +- J
+      if (z > 0)
+        acc = acc.add(wnd[(z - 1) >> 1]);
+      else
+        acc = acc.add(wnd[(-z - 1) >> 1].neg());
+    }
+  }
+  return p.type === 'affine' ? acc.toP() : acc;
+};
 
-  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ...
-  var depth = buffer[4]
+BaseCurve.prototype._wnafMulAdd = function _wnafMulAdd(defW,
+                                                       points,
+                                                       coeffs,
+                                                       len,
+                                                       jacobianResult) {
+  var wndWidth = this._wnafT1;
+  var wnd = this._wnafT2;
+  var naf = this._wnafT3;
 
-  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
-  var parentFingerprint = buffer.readUInt32BE(5)
-  if (depth === 0) {
-    if (parentFingerprint !== 0x00000000) throw new Error('Invalid parent fingerprint')
+  // Fill all arrays
+  var max = 0;
+  for (var i = 0; i < len; i++) {
+    var p = points[i];
+    var nafPoints = p._getNAFPoints(defW);
+    wndWidth[i] = nafPoints.wnd;
+    wnd[i] = nafPoints.points;
   }
 
-  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
-  // This is encoded in MSB order. (0x00000000 if master key)
-  var index = buffer.readUInt32BE(9)
-  if (depth === 0 && index !== 0) throw new Error('Invalid index')
-
-  // 32 bytes: the chain code
-  var chainCode = buffer.slice(13, 45)
-  var keyPair
+  // Comb small window NAFs
+  for (var i = len - 1; i >= 1; i -= 2) {
+    var a = i - 1;
+    var b = i;
+    if (wndWidth[a] !== 1 || wndWidth[b] !== 1) {
+      naf[a] = getNAF(coeffs[a], wndWidth[a]);
+      naf[b] = getNAF(coeffs[b], wndWidth[b]);
+      max = Math.max(naf[a].length, max);
+      max = Math.max(naf[b].length, max);
+      continue;
+    }
 
-  // 33 bytes: private key data (0x00 + k)
-  if (version === network.bip32.private) {
-    if (buffer.readUInt8(45) !== 0x00) throw new Error('Invalid private key')
+    var comb = [
+      points[a], /* 1 */
+      null, /* 3 */
+      null, /* 5 */
+      points[b] /* 7 */
+    ];
 
-    var d = BigInteger.fromBuffer(buffer.slice(46, 78))
-    keyPair = new ECPair(d, null, { network: network })
+    // Try to avoid Projective points, if possible
+    if (points[a].y.cmp(points[b].y) === 0) {
+      comb[1] = points[a].add(points[b]);
+      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
+    } else if (points[a].y.cmp(points[b].y.redNeg()) === 0) {
+      comb[1] = points[a].toJ().mixedAdd(points[b]);
+      comb[2] = points[a].add(points[b].neg());
+    } else {
+      comb[1] = points[a].toJ().mixedAdd(points[b]);
+      comb[2] = points[a].toJ().mixedAdd(points[b].neg());
+    }
 
-  // 33 bytes: public key data (0x02 + X or 0x03 + X)
-  } else {
-    var Q = ecurve.Point.decodeFrom(curve, buffer.slice(45, 78))
-    // Q.compressed is assumed, if somehow this assumption is broken, `new HDNode` will throw
+    var index = [
+      -3, /* -1 -1 */
+      -1, /* -1 0 */
+      -5, /* -1 1 */
+      -7, /* 0 -1 */
+      0, /* 0 0 */
+      7, /* 0 1 */
+      5, /* 1 -1 */
+      1, /* 1 0 */
+      3  /* 1 1 */
+    ];
 
-    // Verify that the X coordinate in the public point corresponds to a point on the curve.
-    // If not, the extended public key is invalid.
-    curve.validate(Q)
+    var jsf = getJSF(coeffs[a], coeffs[b]);
+    max = Math.max(jsf[0].length, max);
+    naf[a] = new Array(max);
+    naf[b] = new Array(max);
+    for (var j = 0; j < max; j++) {
+      var ja = jsf[0][j] | 0;
+      var jb = jsf[1][j] | 0;
 
-    keyPair = new ECPair(null, Q, { network: network })
+      naf[a][j] = index[(ja + 1) * 3 + (jb + 1)];
+      naf[b][j] = 0;
+      wnd[a] = comb;
+    }
   }
 
-  var hd = new HDNode(keyPair, chainCode)
-  hd.depth = depth
-  hd.index = index
-  hd.parentFingerprint = parentFingerprint
-
-  return hd
-}
+  var acc = this.jpoint(null, null, null);
+  var tmp = this._wnafT4;
+  for (var i = max; i >= 0; i--) {
+    var k = 0;
 
-HDNode.prototype.getAddress = function () {
-  return this.keyPair.getAddress()
-}
+    while (i >= 0) {
+      var zero = true;
+      for (var j = 0; j < len; j++) {
+        tmp[j] = naf[j][i] | 0;
+        if (tmp[j] !== 0)
+          zero = false;
+      }
+      if (!zero)
+        break;
+      k++;
+      i--;
+    }
+    if (i >= 0)
+      k++;
+    acc = acc.dblp(k);
+    if (i < 0)
+      break;
 
-HDNode.prototype.getIdentifier = function () {
-  return bcrypto.hash160(this.keyPair.getPublicKeyBuffer())
-}
+    for (var j = 0; j < len; j++) {
+      var z = tmp[j];
+      var p;
+      if (z === 0)
+        continue;
+      else if (z > 0)
+        p = wnd[j][(z - 1) >> 1];
+      else if (z < 0)
+        p = wnd[j][(-z - 1) >> 1].neg();
 
-HDNode.prototype.getFingerprint = function () {
-  return this.getIdentifier().slice(0, 4)
-}
+      if (p.type === 'affine')
+        acc = acc.mixedAdd(p);
+      else
+        acc = acc.add(p);
+    }
+  }
+  // Zeroify references
+  for (var i = 0; i < len; i++)
+    wnd[i] = null;
 
-HDNode.prototype.getNetwork = function () {
-  return this.keyPair.getNetwork()
-}
+  if (jacobianResult)
+    return acc;
+  else
+    return acc.toP();
+};
 
-HDNode.prototype.getPublicKeyBuffer = function () {
-  return this.keyPair.getPublicKeyBuffer()
+function BasePoint(curve, type) {
+  this.curve = curve;
+  this.type = type;
+  this.precomputed = null;
 }
+BaseCurve.BasePoint = BasePoint;
 
-HDNode.prototype.neutered = function () {
-  var neuteredKeyPair = new ECPair(null, this.keyPair.Q, {
-    network: this.keyPair.network
-  })
+BasePoint.prototype.eq = function eq(/*other*/) {
+  throw new Error('Not implemented');
+};
 
-  var neutered = new HDNode(neuteredKeyPair, this.chainCode)
-  neutered.depth = this.depth
-  neutered.index = this.index
-  neutered.parentFingerprint = this.parentFingerprint
+BasePoint.prototype.validate = function validate() {
+  return this.curve.validate(this);
+};
 
-  return neutered
-}
+BaseCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
+  bytes = utils.toArray(bytes, enc);
 
-HDNode.prototype.sign = function (hash) {
-  return this.keyPair.sign(hash)
-}
+  var len = this.p.byteLength();
 
-HDNode.prototype.verify = function (hash, signature) {
-  return this.keyPair.verify(hash, signature)
-}
+  // uncompressed, hybrid-odd, hybrid-even
+  if ((bytes[0] === 0x04 || bytes[0] === 0x06 || bytes[0] === 0x07) &&
+      bytes.length - 1 === 2 * len) {
+    if (bytes[0] === 0x06)
+      assert(bytes[bytes.length - 1] % 2 === 0);
+    else if (bytes[0] === 0x07)
+      assert(bytes[bytes.length - 1] % 2 === 1);
 
-HDNode.prototype.toBase58 = function (__isPrivate) {
-  if (__isPrivate !== undefined) throw new TypeError('Unsupported argument in 2.0.0')
+    var res =  this.point(bytes.slice(1, 1 + len),
+                          bytes.slice(1 + len, 1 + 2 * len));
 
-  // Version
-  var network = this.keyPair.network
-  var version = (!this.isNeutered()) ? network.bip32.private : network.bip32.public
-  var buffer = Buffer.allocUnsafe(78)
+    return res;
+  } else if ((bytes[0] === 0x02 || bytes[0] === 0x03) &&
+              bytes.length - 1 === len) {
+    return this.pointFromX(bytes.slice(1, 1 + len), bytes[0] === 0x03);
+  }
+  throw new Error('Unknown point format');
+};
 
-  // 4 bytes: version bytes
-  buffer.writeUInt32BE(version, 0)
+BasePoint.prototype.encodeCompressed = function encodeCompressed(enc) {
+  return this.encode(enc, true);
+};
 
-  // 1 byte: depth: 0x00 for master nodes, 0x01 for level-1 descendants, ....
-  buffer.writeUInt8(this.depth, 4)
+BasePoint.prototype._encode = function _encode(compact) {
+  var len = this.curve.p.byteLength();
+  var x = this.getX().toArray('be', len);
 
-  // 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
-  buffer.writeUInt32BE(this.parentFingerprint, 5)
+  if (compact)
+    return [ this.getY().isEven() ? 0x02 : 0x03 ].concat(x);
 
-  // 4 bytes: child number. This is the number i in xi = xpar/i, with xi the key being serialized.
-  // This is encoded in big endian. (0x00000000 if master key)
-  buffer.writeUInt32BE(this.index, 9)
+  return [ 0x04 ].concat(x, this.getY().toArray('be', len)) ;
+};
 
-  // 32 bytes: the chain code
-  this.chainCode.copy(buffer, 13)
+BasePoint.prototype.encode = function encode(enc, compact) {
+  return utils.encode(this._encode(compact), enc);
+};
 
-  // 33 bytes: the public key or private key data
-  if (!this.isNeutered()) {
-    // 0x00 + k for private keys
-    buffer.writeUInt8(0, 45)
-    this.keyPair.d.toBuffer(32).copy(buffer, 46)
+BasePoint.prototype.precompute = function precompute(power) {
+  if (this.precomputed)
+    return this;
 
-  // 33 bytes: the public key
-  } else {
-    // X9.62 encoding for public keys
-    this.keyPair.getPublicKeyBuffer().copy(buffer, 45)
-  }
+  var precomputed = {
+    doubles: null,
+    naf: null,
+    beta: null
+  };
+  precomputed.naf = this._getNAFPoints(8);
+  precomputed.doubles = this._getDoubles(4, power);
+  precomputed.beta = this._getBeta();
+  this.precomputed = precomputed;
 
-  return base58check.encode(buffer)
-}
+  return this;
+};
 
-// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#child-key-derivation-ckd-functions
-HDNode.prototype.derive = function (index) {
-  typeforce(types.UInt32, index)
+BasePoint.prototype._hasDoubles = function _hasDoubles(k) {
+  if (!this.precomputed)
+    return false;
 
-  var isHardened = index >= HDNode.HIGHEST_BIT
-  var data = Buffer.allocUnsafe(37)
+  var doubles = this.precomputed.doubles;
+  if (!doubles)
+    return false;
 
-  // Hardened child
-  if (isHardened) {
-    if (this.isNeutered()) throw new TypeError('Could not derive hardened child key')
+  return doubles.points.length >= Math.ceil((k.bitLength() + 1) / doubles.step);
+};
 
-    // data = 0x00 || ser256(kpar) || ser32(index)
-    data[0] = 0x00
-    this.keyPair.d.toBuffer(32).copy(data, 1)
-    data.writeUInt32BE(index, 33)
+BasePoint.prototype._getDoubles = function _getDoubles(step, power) {
+  if (this.precomputed && this.precomputed.doubles)
+    return this.precomputed.doubles;
 
-  // Normal child
-  } else {
-    // data = serP(point(kpar)) || ser32(index)
-    //      = serP(Kpar) || ser32(index)
-    this.keyPair.getPublicKeyBuffer().copy(data, 0)
-    data.writeUInt32BE(index, 33)
+  var doubles = [ this ];
+  var acc = this;
+  for (var i = 0; i < power; i += step) {
+    for (var j = 0; j < step; j++)
+      acc = acc.dbl();
+    doubles.push(acc);
   }
+  return {
+    step: step,
+    points: doubles
+  };
+};
 
-  var I = createHmac('sha512', this.chainCode).update(data).digest()
-  var IL = I.slice(0, 32)
-  var IR = I.slice(32)
-
-  var pIL = BigInteger.fromBuffer(IL)
-
-  // In case parse256(IL) >= n, proceed with the next value for i
-  if (pIL.compareTo(curve.n) >= 0) {
-    return this.derive(index + 1)
-  }
+BasePoint.prototype._getNAFPoints = function _getNAFPoints(wnd) {
+  if (this.precomputed && this.precomputed.naf)
+    return this.precomputed.naf;
 
-  // Private parent key -> private child key
-  var derivedKeyPair
-  if (!this.isNeutered()) {
-    // ki = parse256(IL) + kpar (mod n)
-    var ki = pIL.add(this.keyPair.d).mod(curve.n)
+  var res = [ this ];
+  var max = (1 << wnd) - 1;
+  var dbl = max === 1 ? null : this.dbl();
+  for (var i = 1; i < max; i++)
+    res[i] = res[i - 1].add(dbl);
+  return {
+    wnd: wnd,
+    points: res
+  };
+};
 
-    // In case ki == 0, proceed with the next value for i
-    if (ki.signum() === 0) {
-      return this.derive(index + 1)
-    }
+BasePoint.prototype._getBeta = function _getBeta() {
+  return null;
+};
 
-    derivedKeyPair = new ECPair(ki, null, {
-      network: this.keyPair.network
-    })
+BasePoint.prototype.dblp = function dblp(k) {
+  var r = this;
+  for (var i = 0; i < k; i++)
+    r = r.dbl();
+  return r;
+};
 
-  // Public parent key -> public child key
-  } else {
-    // Ki = point(parse256(IL)) + Kpar
-    //    = G*IL + Kpar
-    var Ki = curve.G.multiply(pIL).add(this.keyPair.Q)
+},{"../../elliptic":97,"bn.js":81}],99:[function(require,module,exports){
+'use strict';
 
-    // In case Ki is the point at infinity, proceed with the next value for i
-    if (curve.isInfinity(Ki)) {
-      return this.derive(index + 1)
-    }
+var curve = require('../curve');
+var elliptic = require('../../elliptic');
+var BN = require('bn.js');
+var inherits = require('inherits');
+var Base = curve.base;
 
-    derivedKeyPair = new ECPair(null, Ki, {
-      network: this.keyPair.network
-    })
-  }
+var assert = elliptic.utils.assert;
 
-  var hd = new HDNode(derivedKeyPair, IR)
-  hd.depth = this.depth + 1
-  hd.index = index
-  hd.parentFingerprint = this.getFingerprint().readUInt32BE(0)
+function EdwardsCurve(conf) {
+  // NOTE: Important as we are creating point in Base.call()
+  this.twisted = (conf.a | 0) !== 1;
+  this.mOneA = this.twisted && (conf.a | 0) === -1;
+  this.extended = this.mOneA;
 
-  return hd
-}
+  Base.call(this, 'edwards', conf);
 
-HDNode.prototype.deriveHardened = function (index) {
-  typeforce(types.UInt31, index)
+  this.a = new BN(conf.a, 16).umod(this.red.m);
+  this.a = this.a.toRed(this.red);
+  this.c = new BN(conf.c, 16).toRed(this.red);
+  this.c2 = this.c.redSqr();
+  this.d = new BN(conf.d, 16).toRed(this.red);
+  this.dd = this.d.redAdd(this.d);
 
-  // Only derives hardened private keys by default
-  return this.derive(index + HDNode.HIGHEST_BIT)
+  assert(!this.twisted || this.c.fromRed().cmpn(1) === 0);
+  this.oneC = (conf.c | 0) === 1;
 }
+inherits(EdwardsCurve, Base);
+module.exports = EdwardsCurve;
 
-// Private === not neutered
-// Public === neutered
-HDNode.prototype.isNeutered = function () {
-  return !(this.keyPair.d)
-}
+EdwardsCurve.prototype._mulA = function _mulA(num) {
+  if (this.mOneA)
+    return num.redNeg();
+  else
+    return this.a.redMul(num);
+};
 
-HDNode.prototype.derivePath = function (path) {
-  typeforce(types.BIP32Path, path)
+EdwardsCurve.prototype._mulC = function _mulC(num) {
+  if (this.oneC)
+    return num;
+  else
+    return this.c.redMul(num);
+};
 
-  var splitPath = path.split('/')
-  if (splitPath[0] === 'm') {
-    if (this.parentFingerprint) {
-      throw new Error('Not a master node')
-    }
+// Just for compatibility with Short curve
+EdwardsCurve.prototype.jpoint = function jpoint(x, y, z, t) {
+  return this.point(x, y, z, t);
+};
 
-    splitPath = splitPath.slice(1)
-  }
+EdwardsCurve.prototype.pointFromX = function pointFromX(x, odd) {
+  x = new BN(x, 16);
+  if (!x.red)
+    x = x.toRed(this.red);
 
-  return splitPath.reduce(function (prevHd, indexStr) {
-    var index
-    if (indexStr.slice(-1) === "'") {
-      index = parseInt(indexStr.slice(0, -1), 10)
-      return prevHd.deriveHardened(index)
-    } else {
-      index = parseInt(indexStr, 10)
-      return prevHd.derive(index)
-    }
-  }, this)
-}
+  var x2 = x.redSqr();
+  var rhs = this.c2.redSub(this.a.redMul(x2));
+  var lhs = this.one.redSub(this.c2.redMul(this.d).redMul(x2));
 
-module.exports = HDNode
+  var y2 = rhs.redMul(lhs.redInvm());
+  var y = y2.redSqrt();
+  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
+    throw new Error('invalid point');
 
-},{"./crypto":45,"./ecpair":47,"./networks":51,"./types":78,"bigi":37,"bs58check":80,"create-hmac":85,"ecurve":89,"safe-buffer":98,"typeforce":109}],50:[function(require,module,exports){
-module.exports = {
-  Block: require('./block'),
-  ECPair: require('./ecpair'),
-  ECSignature: require('./ecsignature'),
-  HDNode: require('./hdnode'),
-  Transaction: require('./transaction'),
-  TransactionBuilder: require('./transaction_builder'),
+  var isOdd = y.fromRed().isOdd();
+  if (odd && !isOdd || !odd && isOdd)
+    y = y.redNeg();
 
-  address: require('./address'),
-  bufferutils: require('./bufferutils'), // TODO: remove in 4.0.0
-  crypto: require('./crypto'),
-  networks: require('./networks'),
-  opcodes: require('bitcoin-ops'),
-  script: require('./script')
-}
+  return this.point(x, y);
+};
 
-},{"./address":42,"./block":43,"./bufferutils":44,"./crypto":45,"./ecpair":47,"./ecsignature":48,"./hdnode":49,"./networks":51,"./script":52,"./transaction":76,"./transaction_builder":77,"bitcoin-ops":40}],51:[function(require,module,exports){
-// https://en.bitcoin.it/wiki/List_of_address_prefixes
-// Dogecoin BIP32 is a proposed standard: https://bitcointalk.org/index.php?topic=409731
+EdwardsCurve.prototype.pointFromY = function pointFromY(y, odd) {
+  y = new BN(y, 16);
+  if (!y.red)
+    y = y.toRed(this.red);
 
-module.exports = {
-  bitcoin: {
-    messagePrefix: '\x18Bitcoin Signed Message:\n',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4
-    },
-    pubKeyHash: 0x00,
-    scriptHash: 0x05,
-    wif: 0x80
-  },
-  testnet: {
-    messagePrefix: '\x18Bitcoin Signed Message:\n',
-    bip32: {
-      public: 0x043587cf,
-      private: 0x04358394
-    },
-    pubKeyHash: 0x6f,
-    scriptHash: 0xc4,
-    wif: 0xef
-  },
-  litecoin: {
-    messagePrefix: '\x19Litecoin Signed Message:\n',
-    bip32: {
-      public: 0x0488b21e,
-      private: 0x0488ade4,
-    },
-    pubKeyHash: 0x30,
-    scriptHash: 0x32,
-    wif: 0xb0
-  },
-  litecoinLtub: {
-    messagePrefix: '\x19Litecoin Signed Message:\n',
-    bip32: {
-      public: 0x019da462,
-      private: 0x019d9cfe
-    },
-    pubKeyHash: 0x30,
-    scriptHash: 0x32,
-    wif: 0xb0
+  // x^2 = (y^2 - 1) / (d y^2 + 1)
+  var y2 = y.redSqr();
+  var lhs = y2.redSub(this.one);
+  var rhs = y2.redMul(this.d).redAdd(this.one);
+  var x2 = lhs.redMul(rhs.redInvm());
+
+  if (x2.cmp(this.zero) === 0) {
+    if (odd)
+      throw new Error('invalid point');
+    else
+      return this.point(this.zero, y);
   }
-}
 
-},{}],52:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var bip66 = require('bip66')
-var pushdata = require('pushdata-bitcoin')
-var typeforce = require('typeforce')
-var types = require('./types')
-var scriptNumber = require('./script_number')
+  var x = x2.redSqrt();
+  if (x.redSqr().redSub(x2).cmp(this.zero) !== 0)
+    throw new Error('invalid point');
 
-var OPS = require('bitcoin-ops')
-var REVERSE_OPS = require('bitcoin-ops/map')
-var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
+  if (x.isOdd() !== odd)
+    x = x.redNeg();
 
-function isOPInt (value) {
-  return types.Number(value) &&
-    ((value === OPS.OP_0) ||
-    (value >= OPS.OP_1 && value <= OPS.OP_16) ||
-    (value === OPS.OP_1NEGATE))
-}
+  return this.point(x, y);
+};
 
-function isPushOnlyChunk (value) {
-  return types.Buffer(value) || isOPInt(value)
-}
+EdwardsCurve.prototype.validate = function validate(point) {
+  if (point.isInfinity())
+    return true;
 
-function isPushOnly (value) {
-  return types.Array(value) && value.every(isPushOnlyChunk)
-}
+  // Curve: A * X^2 + Y^2 = C^2 * (1 + D * X^2 * Y^2)
+  point.normalize();
 
-function compile (chunks) {
-  // TODO: remove me
-  if (Buffer.isBuffer(chunks)) return chunks
+  var x2 = point.x.redSqr();
+  var y2 = point.y.redSqr();
+  var lhs = x2.redMul(this.a).redAdd(y2);
+  var rhs = this.c2.redMul(this.one.redAdd(this.d.redMul(x2).redMul(y2)));
 
-  typeforce(types.Array, chunks)
+  return lhs.cmp(rhs) === 0;
+};
 
-  var bufferSize = chunks.reduce(function (accum, chunk) {
-    // data chunk
-    if (Buffer.isBuffer(chunk)) {
-      // adhere to BIP62.3, minimal push policy
-      if (chunk.length === 1 && (chunk[0] === 0x81 || (chunk[0] >= 1 && chunk[0] <= 16))) {
-        return accum + 1
-      }
+function Point(curve, x, y, z, t) {
+  Base.BasePoint.call(this, curve, 'projective');
+  if (x === null && y === null && z === null) {
+    this.x = this.curve.zero;
+    this.y = this.curve.one;
+    this.z = this.curve.one;
+    this.t = this.curve.zero;
+    this.zOne = true;
+  } else {
+    this.x = new BN(x, 16);
+    this.y = new BN(y, 16);
+    this.z = z ? new BN(z, 16) : this.curve.one;
+    this.t = t && new BN(t, 16);
+    if (!this.x.red)
+      this.x = this.x.toRed(this.curve.red);
+    if (!this.y.red)
+      this.y = this.y.toRed(this.curve.red);
+    if (!this.z.red)
+      this.z = this.z.toRed(this.curve.red);
+    if (this.t && !this.t.red)
+      this.t = this.t.toRed(this.curve.red);
+    this.zOne = this.z === this.curve.one;
 
-      return accum + pushdata.encodingLength(chunk.length) + chunk.length
+    // Use extended coordinates
+    if (this.curve.extended && !this.t) {
+      this.t = this.x.redMul(this.y);
+      if (!this.zOne)
+        this.t = this.t.redMul(this.z.redInvm());
     }
+  }
+}
+inherits(Point, Base.BasePoint);
 
-    // opcode
-    return accum + 1
-  }, 0.0)
+EdwardsCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
+  return Point.fromJSON(this, obj);
+};
 
-  var buffer = Buffer.allocUnsafe(bufferSize)
-  var offset = 0
+EdwardsCurve.prototype.point = function point(x, y, z, t) {
+  return new Point(this, x, y, z, t);
+};
 
-  chunks.forEach(function (chunk) {
-    // data chunk
-    if (Buffer.isBuffer(chunk)) {
-      // adhere to BIP62.3, minimal push policy
-      if (chunk.length === 1 && chunk[0] >= 1 && chunk[0] <= 16) {
-        var opcode = OP_INT_BASE + chunk[0]
-        buffer.writeUInt8(opcode, offset)
-        offset += 1
-        return
-      }
+Point.fromJSON = function fromJSON(curve, obj) {
+  return new Point(curve, obj[0], obj[1], obj[2]);
+};
 
-      if (chunk.length === 1 && chunk[0] === 0x81) {
-        buffer.writeUInt8(OPS.OP_1NEGATE, offset)
-        offset += 1
-        return
-      }
+Point.prototype.inspect = function inspect() {
+  if (this.isInfinity())
+    return '<EC Point Infinity>';
+  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
+      ' y: ' + this.y.fromRed().toString(16, 2) +
+      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
+};
 
-      offset += pushdata.encode(buffer, chunk.length, offset)
+Point.prototype.isInfinity = function isInfinity() {
+  // XXX This code assumes that zero is always zero in red
+  return this.x.cmpn(0) === 0 &&
+         this.y.cmp(this.z) === 0;
+};
 
-      chunk.copy(buffer, offset)
-      offset += chunk.length
+Point.prototype._extDbl = function _extDbl() {
+  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
+  //     #doubling-dbl-2008-hwcd
+  // 4M + 4S
 
-    // opcode
+  // A = X1^2
+  var a = this.x.redSqr();
+  // B = Y1^2
+  var b = this.y.redSqr();
+  // C = 2 * Z1^2
+  var c = this.z.redSqr();
+  c = c.redIAdd(c);
+  // D = a * A
+  var d = this.curve._mulA(a);
+  // E = (X1 + Y1)^2 - A - B
+  var e = this.x.redAdd(this.y).redSqr().redISub(a).redISub(b);
+  // G = D + B
+  var g = d.redAdd(b);
+  // F = G - C
+  var f = g.redSub(c);
+  // H = D - B
+  var h = d.redSub(b);
+  // X3 = E * F
+  var nx = e.redMul(f);
+  // Y3 = G * H
+  var ny = g.redMul(h);
+  // T3 = E * H
+  var nt = e.redMul(h);
+  // Z3 = F * G
+  var nz = f.redMul(g);
+  return this.curve.point(nx, ny, nz, nt);
+};
+
+Point.prototype._projDbl = function _projDbl() {
+  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
+  //     #doubling-dbl-2008-bbjlp
+  //     #doubling-dbl-2007-bl
+  // and others
+  // Generally 3M + 4S or 2M + 4S
+
+  // B = (X1 + Y1)^2
+  var b = this.x.redAdd(this.y).redSqr();
+  // C = X1^2
+  var c = this.x.redSqr();
+  // D = Y1^2
+  var d = this.y.redSqr();
+
+  var nx;
+  var ny;
+  var nz;
+  if (this.curve.twisted) {
+    // E = a * C
+    var e = this.curve._mulA(c);
+    // F = E + D
+    var f = e.redAdd(d);
+    if (this.zOne) {
+      // X3 = (B - C - D) * (F - 2)
+      nx = b.redSub(c).redSub(d).redMul(f.redSub(this.curve.two));
+      // Y3 = F * (E - D)
+      ny = f.redMul(e.redSub(d));
+      // Z3 = F^2 - 2 * F
+      nz = f.redSqr().redSub(f).redSub(f);
     } else {
-      buffer.writeUInt8(chunk, offset)
-      offset += 1
+      // H = Z1^2
+      var h = this.z.redSqr();
+      // J = F - 2 * H
+      var j = f.redSub(h).redISub(h);
+      // X3 = (B-C-D)*J
+      nx = b.redSub(c).redISub(d).redMul(j);
+      // Y3 = F * (E - D)
+      ny = f.redMul(e.redSub(d));
+      // Z3 = F * J
+      nz = f.redMul(j);
     }
-  })
+  } else {
+    // E = C + D
+    var e = c.redAdd(d);
+    // H = (c * Z1)^2
+    var h = this.curve._mulC(this.c.redMul(this.z)).redSqr();
+    // J = E - 2 * H
+    var j = e.redSub(h).redSub(h);
+    // X3 = c * (B - E) * J
+    nx = this.curve._mulC(b.redISub(e)).redMul(j);
+    // Y3 = c * E * (C - D)
+    ny = this.curve._mulC(e).redMul(c.redISub(d));
+    // Z3 = E * J
+    nz = e.redMul(j);
+  }
+  return this.curve.point(nx, ny, nz);
+};
 
-  if (offset !== buffer.length) throw new Error('Could not decode chunks')
-  return buffer
-}
+Point.prototype.dbl = function dbl() {
+  if (this.isInfinity())
+    return this;
 
-function decompile (buffer) {
-  // TODO: remove me
-  if (types.Array(buffer)) return buffer
+  // Double in extended coordinates
+  if (this.curve.extended)
+    return this._extDbl();
+  else
+    return this._projDbl();
+};
 
-  typeforce(types.Buffer, buffer)
+Point.prototype._extAdd = function _extAdd(p) {
+  // hyperelliptic.org/EFD/g1p/auto-twisted-extended-1.html
+  //     #addition-add-2008-hwcd-3
+  // 8M
 
-  var chunks = []
-  var i = 0
+  // A = (Y1 - X1) * (Y2 - X2)
+  var a = this.y.redSub(this.x).redMul(p.y.redSub(p.x));
+  // B = (Y1 + X1) * (Y2 + X2)
+  var b = this.y.redAdd(this.x).redMul(p.y.redAdd(p.x));
+  // C = T1 * k * T2
+  var c = this.t.redMul(this.curve.dd).redMul(p.t);
+  // D = Z1 * 2 * Z2
+  var d = this.z.redMul(p.z.redAdd(p.z));
+  // E = B - A
+  var e = b.redSub(a);
+  // F = D - C
+  var f = d.redSub(c);
+  // G = D + C
+  var g = d.redAdd(c);
+  // H = B + A
+  var h = b.redAdd(a);
+  // X3 = E * F
+  var nx = e.redMul(f);
+  // Y3 = G * H
+  var ny = g.redMul(h);
+  // T3 = E * H
+  var nt = e.redMul(h);
+  // Z3 = F * G
+  var nz = f.redMul(g);
+  return this.curve.point(nx, ny, nz, nt);
+};
 
-  while (i < buffer.length) {
-    var opcode = buffer[i]
+Point.prototype._projAdd = function _projAdd(p) {
+  // hyperelliptic.org/EFD/g1p/auto-twisted-projective.html
+  //     #addition-add-2008-bbjlp
+  //     #addition-add-2007-bl
+  // 10M + 1S
 
-    // data chunk
-    if ((opcode > OPS.OP_0) && (opcode <= OPS.OP_PUSHDATA4)) {
-      var d = pushdata.decode(buffer, i)
+  // A = Z1 * Z2
+  var a = this.z.redMul(p.z);
+  // B = A^2
+  var b = a.redSqr();
+  // C = X1 * X2
+  var c = this.x.redMul(p.x);
+  // D = Y1 * Y2
+  var d = this.y.redMul(p.y);
+  // E = d * C * D
+  var e = this.curve.d.redMul(c).redMul(d);
+  // F = B - E
+  var f = b.redSub(e);
+  // G = B + E
+  var g = b.redAdd(e);
+  // X3 = A * F * ((X1 + Y1) * (X2 + Y2) - C - D)
+  var tmp = this.x.redAdd(this.y).redMul(p.x.redAdd(p.y)).redISub(c).redISub(d);
+  var nx = a.redMul(f).redMul(tmp);
+  var ny;
+  var nz;
+  if (this.curve.twisted) {
+    // Y3 = A * G * (D - a * C)
+    ny = a.redMul(g).redMul(d.redSub(this.curve._mulA(c)));
+    // Z3 = F * G
+    nz = f.redMul(g);
+  } else {
+    // Y3 = A * G * (D - C)
+    ny = a.redMul(g).redMul(d.redSub(c));
+    // Z3 = c * F * G
+    nz = this.curve._mulC(f).redMul(g);
+  }
+  return this.curve.point(nx, ny, nz);
+};
 
-      // did reading a pushDataInt fail? empty script
-      if (d === null) return []
-      i += d.size
+Point.prototype.add = function add(p) {
+  if (this.isInfinity())
+    return p;
+  if (p.isInfinity())
+    return this;
 
-      // attempt to read too much data? empty script
-      if (i + d.number > buffer.length) return []
+  if (this.curve.extended)
+    return this._extAdd(p);
+  else
+    return this._projAdd(p);
+};
 
-      var data = buffer.slice(i, i + d.number)
-      i += d.number
+Point.prototype.mul = function mul(k) {
+  if (this._hasDoubles(k))
+    return this.curve._fixedNafMul(this, k);
+  else
+    return this.curve._wnafMul(this, k);
+};
 
-      chunks.push(data)
+Point.prototype.mulAdd = function mulAdd(k1, p, k2) {
+  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, false);
+};
 
-    // opcode
-    } else {
-      chunks.push(opcode)
+Point.prototype.jmulAdd = function jmulAdd(k1, p, k2) {
+  return this.curve._wnafMulAdd(1, [ this, p ], [ k1, k2 ], 2, true);
+};
 
-      i += 1
-    }
-  }
+Point.prototype.normalize = function normalize() {
+  if (this.zOne)
+    return this;
 
-  return chunks
-}
+  // Normalize coordinates
+  var zi = this.z.redInvm();
+  this.x = this.x.redMul(zi);
+  this.y = this.y.redMul(zi);
+  if (this.t)
+    this.t = this.t.redMul(zi);
+  this.z = this.curve.one;
+  this.zOne = true;
+  return this;
+};
 
-function toASM (chunks) {
-  if (Buffer.isBuffer(chunks)) {
-    chunks = decompile(chunks)
-  }
+Point.prototype.neg = function neg() {
+  return this.curve.point(this.x.redNeg(),
+                          this.y,
+                          this.z,
+                          this.t && this.t.redNeg());
+};
 
-  return chunks.map(function (chunk) {
-    // data?
-    if (Buffer.isBuffer(chunk)) return chunk.toString('hex')
+Point.prototype.getX = function getX() {
+  this.normalize();
+  return this.x.fromRed();
+};
 
-    // opcode!
-    return REVERSE_OPS[chunk]
-  }).join(' ')
-}
+Point.prototype.getY = function getY() {
+  this.normalize();
+  return this.y.fromRed();
+};
 
-function fromASM (asm) {
-  typeforce(types.String, asm)
+Point.prototype.eq = function eq(other) {
+  return this === other ||
+         this.getX().cmp(other.getX()) === 0 &&
+         this.getY().cmp(other.getY()) === 0;
+};
 
-  return compile(asm.split(' ').map(function (chunkStr) {
-    // opcode?
-    if (OPS[chunkStr] !== undefined) return OPS[chunkStr]
-    typeforce(types.Hex, chunkStr)
+Point.prototype.eqXToP = function eqXToP(x) {
+  var rx = x.toRed(this.curve.red).redMul(this.z);
+  if (this.x.cmp(rx) === 0)
+    return true;
 
-    // data!
-    return Buffer.from(chunkStr, 'hex')
-  }))
-}
+  var xc = x.clone();
+  var t = this.curve.redN.redMul(this.z);
+  for (;;) {
+    xc.iadd(this.curve.n);
+    if (xc.cmp(this.curve.p) >= 0)
+      return false;
 
-function toStack (chunks) {
-  chunks = decompile(chunks)
-  typeforce(isPushOnly, chunks)
+    rx.redIAdd(t);
+    if (this.x.cmp(rx) === 0)
+      return true;
+  }
+  return false;
+};
 
-  return chunks.map(function (op) {
-    if (Buffer.isBuffer(op)) return op
-    if (op === OPS.OP_0) return Buffer.allocUnsafe(0)
+// Compatibility with BaseCurve
+Point.prototype.toP = Point.prototype.normalize;
+Point.prototype.mixedAdd = Point.prototype.add;
 
-    return scriptNumber.encode(op - OP_INT_BASE)
-  })
-}
+},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],100:[function(require,module,exports){
+'use strict';
 
-function isCanonicalPubKey (buffer) {
-  if (!Buffer.isBuffer(buffer)) return false
-  if (buffer.length < 33) return false
+var curve = exports;
 
-  switch (buffer[0]) {
-    case 0x02:
-    case 0x03:
-      return buffer.length === 33
-    case 0x04:
-      return buffer.length === 65
-  }
+curve.base = require('./base');
+curve.short = require('./short');
+curve.mont = require('./mont');
+curve.edwards = require('./edwards');
 
-  return false
-}
+},{"./base":98,"./edwards":99,"./mont":101,"./short":102}],101:[function(require,module,exports){
+'use strict';
 
-function isDefinedHashType (hashType) {
-  var hashTypeMod = hashType & ~0x80
+var curve = require('../curve');
+var BN = require('bn.js');
+var inherits = require('inherits');
+var Base = curve.base;
 
-// return hashTypeMod > SIGHASH_ALL && hashTypeMod < SIGHASH_SINGLE
-  return hashTypeMod > 0x00 && hashTypeMod < 0x04
-}
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
 
-function isCanonicalSignature (buffer) {
-  if (!Buffer.isBuffer(buffer)) return false
-  if (!isDefinedHashType(buffer[buffer.length - 1])) return false
+function MontCurve(conf) {
+  Base.call(this, 'mont', conf);
 
-  return bip66.check(buffer.slice(0, -1))
+  this.a = new BN(conf.a, 16).toRed(this.red);
+  this.b = new BN(conf.b, 16).toRed(this.red);
+  this.i4 = new BN(4).toRed(this.red).redInvm();
+  this.two = new BN(2).toRed(this.red);
+  this.a24 = this.i4.redMul(this.a.redAdd(this.two));
 }
+inherits(MontCurve, Base);
+module.exports = MontCurve;
 
-module.exports = {
-  compile: compile,
-  decompile: decompile,
-  fromASM: fromASM,
-  toASM: toASM,
-  toStack: toStack,
+MontCurve.prototype.validate = function validate(point) {
+  var x = point.normalize().x;
+  var x2 = x.redSqr();
+  var rhs = x2.redMul(x).redAdd(x2.redMul(this.a)).redAdd(x);
+  var y = rhs.redSqrt();
 
-  number: require('./script_number'),
+  return y.redSqr().cmp(rhs) === 0;
+};
 
-  isCanonicalPubKey: isCanonicalPubKey,
-  isCanonicalSignature: isCanonicalSignature,
-  isPushOnly: isPushOnly,
-  isDefinedHashType: isDefinedHashType
+function Point(curve, x, z) {
+  Base.BasePoint.call(this, curve, 'projective');
+  if (x === null && z === null) {
+    this.x = this.curve.one;
+    this.z = this.curve.zero;
+  } else {
+    this.x = new BN(x, 16);
+    this.z = new BN(z, 16);
+    if (!this.x.red)
+      this.x = this.x.toRed(this.curve.red);
+    if (!this.z.red)
+      this.z = this.z.toRed(this.curve.red);
+  }
 }
+inherits(Point, Base.BasePoint);
+
+MontCurve.prototype.decodePoint = function decodePoint(bytes, enc) {
+  return this.point(utils.toArray(bytes, enc), 1);
+};
+
+MontCurve.prototype.point = function point(x, z) {
+  return new Point(this, x, z);
+};
+
+MontCurve.prototype.pointFromJSON = function pointFromJSON(obj) {
+  return Point.fromJSON(this, obj);
+};
 
-var templates = require('./templates')
-for (var key in templates) {
-  module.exports[key] = templates[key]
-}
+Point.prototype.precompute = function precompute() {
+  // No-op
+};
 
-},{"./script_number":53,"./templates":54,"./types":78,"bip66":39,"bitcoin-ops":40,"bitcoin-ops/map":41,"pushdata-bitcoin":95,"safe-buffer":98,"typeforce":109}],53:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
+Point.prototype._encode = function _encode() {
+  return this.getX().toArray('be', this.curve.p.byteLength());
+};
 
-function decode (buffer, maxLength, minimal) {
-  maxLength = maxLength || 4
-  minimal = minimal === undefined ? true : minimal
+Point.fromJSON = function fromJSON(curve, obj) {
+  return new Point(curve, obj[0], obj[1] || curve.one);
+};
 
-  var length = buffer.length
-  if (length === 0) return 0
-  if (length > maxLength) throw new TypeError('Script number overflow')
-  if (minimal) {
-    if ((buffer[length - 1] & 0x7f) === 0) {
-      if (length <= 1 || (buffer[length - 2] & 0x80) === 0) throw new Error('Non-minimally encoded script number')
-    }
-  }
+Point.prototype.inspect = function inspect() {
+  if (this.isInfinity())
+    return '<EC Point Infinity>';
+  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
+      ' z: ' + this.z.fromRed().toString(16, 2) + '>';
+};
 
-  // 40-bit
-  if (length === 5) {
-    var a = buffer.readUInt32LE(0)
-    var b = buffer.readUInt8(4)
+Point.prototype.isInfinity = function isInfinity() {
+  // XXX This code assumes that zero is always zero in red
+  return this.z.cmpn(0) === 0;
+};
 
-    if (b & 0x80) return -(((b & ~0x80) * 0x100000000) + a)
-    return (b * 0x100000000) + a
-  }
+Point.prototype.dbl = function dbl() {
+  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#doubling-dbl-1987-m-3
+  // 2M + 2S + 4A
 
-  var result = 0
+  // A = X1 + Z1
+  var a = this.x.redAdd(this.z);
+  // AA = A^2
+  var aa = a.redSqr();
+  // B = X1 - Z1
+  var b = this.x.redSub(this.z);
+  // BB = B^2
+  var bb = b.redSqr();
+  // C = AA - BB
+  var c = aa.redSub(bb);
+  // X3 = AA * BB
+  var nx = aa.redMul(bb);
+  // Z3 = C * (BB + A24 * C)
+  var nz = c.redMul(bb.redAdd(this.curve.a24.redMul(c)));
+  return this.curve.point(nx, nz);
+};
 
-  // 32-bit / 24-bit / 16-bit / 8-bit
-  for (var i = 0; i < length; ++i) {
-    result |= buffer[i] << (8 * i)
-  }
+Point.prototype.add = function add() {
+  throw new Error('Not supported on Montgomery curve');
+};
 
-  if (buffer[length - 1] & 0x80) return -(result & ~(0x80 << (8 * (length - 1))))
-  return result
-}
+Point.prototype.diffAdd = function diffAdd(p, diff) {
+  // http://hyperelliptic.org/EFD/g1p/auto-montgom-xz.html#diffadd-dadd-1987-m-3
+  // 4M + 2S + 6A
 
-function scriptNumSize (i) {
-  return i > 0x7fffffff ? 5
-  : i > 0x7fffff ? 4
-  : i > 0x7fff ? 3
-  : i > 0x7f ? 2
-  : i > 0x00 ? 1
-  : 0
-}
+  // A = X2 + Z2
+  var a = this.x.redAdd(this.z);
+  // B = X2 - Z2
+  var b = this.x.redSub(this.z);
+  // C = X3 + Z3
+  var c = p.x.redAdd(p.z);
+  // D = X3 - Z3
+  var d = p.x.redSub(p.z);
+  // DA = D * A
+  var da = d.redMul(a);
+  // CB = C * B
+  var cb = c.redMul(b);
+  // X5 = Z1 * (DA + CB)^2
+  var nx = diff.z.redMul(da.redAdd(cb).redSqr());
+  // Z5 = X1 * (DA - CB)^2
+  var nz = diff.x.redMul(da.redISub(cb).redSqr());
+  return this.curve.point(nx, nz);
+};
 
-function encode (number) {
-  var value = Math.abs(number)
-  var size = scriptNumSize(value)
-  var buffer = Buffer.allocUnsafe(size)
-  var negative = number < 0
+Point.prototype.mul = function mul(k) {
+  var t = k.clone();
+  var a = this; // (N / 2) * Q + Q
+  var b = this.curve.point(null, null); // (N / 2) * Q
+  var c = this; // Q
 
-  for (var i = 0; i < size; ++i) {
-    buffer.writeUInt8(value & 0xff, i)
-    value >>= 8
-  }
+  for (var bits = []; t.cmpn(0) !== 0; t.iushrn(1))
+    bits.push(t.andln(1));
 
-  if (buffer[size - 1] & 0x80) {
-    buffer.writeUInt8(negative ? 0x80 : 0x00, size - 1)
-  } else if (negative) {
-    buffer[size - 1] |= 0x80
+  for (var i = bits.length - 1; i >= 0; i--) {
+    if (bits[i] === 0) {
+      // N * Q + Q = ((N / 2) * Q + Q)) + (N / 2) * Q
+      a = a.diffAdd(b, c);
+      // N * Q = 2 * ((N / 2) * Q + Q))
+      b = b.dbl();
+    } else {
+      // N * Q = ((N / 2) * Q + Q) + ((N / 2) * Q)
+      b = a.diffAdd(b, c);
+      // N * Q + Q = 2 * ((N / 2) * Q + Q)
+      a = a.dbl();
+    }
   }
+  return b;
+};
 
-  return buffer
-}
+Point.prototype.mulAdd = function mulAdd() {
+  throw new Error('Not supported on Montgomery curve');
+};
 
-module.exports = {
-  decode: decode,
-  encode: encode
-}
+Point.prototype.jumlAdd = function jumlAdd() {
+  throw new Error('Not supported on Montgomery curve');
+};
 
-},{"safe-buffer":98}],54:[function(require,module,exports){
-var decompile = require('../script').decompile
-var multisig = require('./multisig')
-var nullData = require('./nulldata')
-var pubKey = require('./pubkey')
-var pubKeyHash = require('./pubkeyhash')
-var scriptHash = require('./scripthash')
-var witnessPubKeyHash = require('./witnesspubkeyhash')
-var witnessScriptHash = require('./witnessscripthash')
-var witnessCommitment = require('./witnesscommitment')
+Point.prototype.eq = function eq(other) {
+  return this.getX().cmp(other.getX()) === 0;
+};
 
-var types = {
-  MULTISIG: 'multisig',
-  NONSTANDARD: 'nonstandard',
-  NULLDATA: 'nulldata',
-  P2PK: 'pubkey',
-  P2PKH: 'pubkeyhash',
-  P2SH: 'scripthash',
-  P2WPKH: 'witnesspubkeyhash',
-  P2WSH: 'witnessscripthash',
-  WITNESS_COMMITMENT: 'witnesscommitment'
-}
+Point.prototype.normalize = function normalize() {
+  this.x = this.x.redMul(this.z.redInvm());
+  this.z = this.curve.one;
+  return this;
+};
 
-function classifyOutput (script) {
-  if (witnessPubKeyHash.output.check(script)) return types.P2WPKH
-  if (witnessScriptHash.output.check(script)) return types.P2WSH
-  if (pubKeyHash.output.check(script)) return types.P2PKH
-  if (scriptHash.output.check(script)) return types.P2SH
+Point.prototype.getX = function getX() {
+  // Normalize coordinates
+  this.normalize();
 
-  // XXX: optimization, below functions .decompile before use
-  var chunks = decompile(script)
-  if (multisig.output.check(chunks)) return types.MULTISIG
-  if (pubKey.output.check(chunks)) return types.P2PK
-  if (witnessCommitment.output.check(chunks)) return types.WITNESS_COMMITMENT
-  if (nullData.output.check(chunks)) return types.NULLDATA
+  return this.x.fromRed();
+};
 
-  return types.NONSTANDARD
-}
+},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],102:[function(require,module,exports){
+'use strict';
 
-function classifyInput (script, allowIncomplete) {
-  // XXX: optimization, below functions .decompile before use
-  var chunks = decompile(script)
+var curve = require('../curve');
+var elliptic = require('../../elliptic');
+var BN = require('bn.js');
+var inherits = require('inherits');
+var Base = curve.base;
 
-  if (pubKeyHash.input.check(chunks)) return types.P2PKH
-  if (scriptHash.input.check(chunks, allowIncomplete)) return types.P2SH
-  if (multisig.input.check(chunks, allowIncomplete)) return types.MULTISIG
-  if (pubKey.input.check(chunks)) return types.P2PK
+var assert = elliptic.utils.assert;
 
-  return types.NONSTANDARD
-}
+function ShortCurve(conf) {
+  Base.call(this, 'short', conf);
 
-function classifyWitness (script, allowIncomplete) {
-  // XXX: optimization, below functions .decompile before use
-  var chunks = decompile(script)
+  this.a = new BN(conf.a, 16).toRed(this.red);
+  this.b = new BN(conf.b, 16).toRed(this.red);
+  this.tinv = this.two.redInvm();
 
-  if (witnessPubKeyHash.input.check(chunks)) return types.P2WPKH
-  if (witnessScriptHash.input.check(chunks, allowIncomplete)) return types.P2WSH
+  this.zeroA = this.a.fromRed().cmpn(0) === 0;
+  this.threeA = this.a.fromRed().sub(this.p).cmpn(-3) === 0;
 
-  return types.NONSTANDARD
+  // If the curve is endomorphic, precalculate beta and lambda
+  this.endo = this._getEndomorphism(conf);
+  this._endoWnafT1 = new Array(4);
+  this._endoWnafT2 = new Array(4);
 }
+inherits(ShortCurve, Base);
+module.exports = ShortCurve;
 
-module.exports = {
-  classifyInput: classifyInput,
-  classifyOutput: classifyOutput,
-  classifyWitness: classifyWitness,
-  multisig: multisig,
-  nullData: nullData,
-  pubKey: pubKey,
-  pubKeyHash: pubKeyHash,
-  scriptHash: scriptHash,
-  witnessPubKeyHash: witnessPubKeyHash,
-  witnessScriptHash: witnessScriptHash,
-  witnessCommitment: witnessCommitment,
-  types: types
-}
+ShortCurve.prototype._getEndomorphism = function _getEndomorphism(conf) {
+  // No efficient endomorphism
+  if (!this.zeroA || !this.g || !this.n || this.p.modn(3) !== 1)
+    return;
 
-},{"../script":52,"./multisig":55,"./nulldata":58,"./pubkey":59,"./pubkeyhash":62,"./scripthash":65,"./witnesscommitment":68,"./witnesspubkeyhash":70,"./witnessscripthash":73}],55:[function(require,module,exports){
-module.exports = {
-  input: require('./input'),
-  output: require('./output')
-}
+  // Compute beta and lambda, that lambda * P = (beta * Px; Py)
+  var beta;
+  var lambda;
+  if (conf.beta) {
+    beta = new BN(conf.beta, 16).toRed(this.red);
+  } else {
+    var betas = this._getEndoRoots(this.p);
+    // Choose the smallest beta
+    beta = betas[0].cmp(betas[1]) < 0 ? betas[0] : betas[1];
+    beta = beta.toRed(this.red);
+  }
+  if (conf.lambda) {
+    lambda = new BN(conf.lambda, 16);
+  } else {
+    // Choose the lambda that is matching selected beta
+    var lambdas = this._getEndoRoots(this.n);
+    if (this.g.mul(lambdas[0]).x.cmp(this.g.x.redMul(beta)) === 0) {
+      lambda = lambdas[0];
+    } else {
+      lambda = lambdas[1];
+      assert(this.g.mul(lambda).x.cmp(this.g.x.redMul(beta)) === 0);
+    }
+  }
 
-},{"./input":56,"./output":57}],56:[function(require,module,exports){
-// OP_0 [signatures ...]
+  // Get basis vectors, used for balanced length-two representation
+  var basis;
+  if (conf.basis) {
+    basis = conf.basis.map(function(vec) {
+      return {
+        a: new BN(vec.a, 16),
+        b: new BN(vec.b, 16)
+      };
+    });
+  } else {
+    basis = this._getEndoBasis(lambda);
+  }
 
-var Buffer = require('safe-buffer').Buffer
-var bscript = require('../../script')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+  return {
+    beta: beta,
+    lambda: lambda,
+    basis: basis
+  };
+};
 
-function partialSignature (value) {
-  return value === OPS.OP_0 || bscript.isCanonicalSignature(value)
-}
+ShortCurve.prototype._getEndoRoots = function _getEndoRoots(num) {
+  // Find roots of for x^2 + x + 1 in F
+  // Root = (-1 +- Sqrt(-3)) / 2
+  //
+  var red = num === this.p ? this.red : BN.mont(num);
+  var tinv = new BN(2).toRed(red).redInvm();
+  var ntinv = tinv.redNeg();
 
-function check (script, allowIncomplete) {
-  var chunks = bscript.decompile(script)
-  if (chunks.length < 2) return false
-  if (chunks[0] !== OPS.OP_0) return false
+  var s = new BN(3).toRed(red).redNeg().redSqrt().redMul(tinv);
 
-  if (allowIncomplete) {
-    return chunks.slice(1).every(partialSignature)
-  }
+  var l1 = ntinv.redAdd(s).fromRed();
+  var l2 = ntinv.redSub(s).fromRed();
+  return [ l1, l2 ];
+};
 
-  return chunks.slice(1).every(bscript.isCanonicalSignature)
-}
-check.toJSON = function () { return 'multisig input' }
+ShortCurve.prototype._getEndoBasis = function _getEndoBasis(lambda) {
+  // aprxSqrt >= sqrt(this.n)
+  var aprxSqrt = this.n.ushrn(Math.floor(this.n.bitLength() / 2));
 
-var EMPTY_BUFFER = Buffer.allocUnsafe(0)
+  // 3.74
+  // Run EGCD, until r(L + 1) < aprxSqrt
+  var u = lambda;
+  var v = this.n.clone();
+  var x1 = new BN(1);
+  var y1 = new BN(0);
+  var x2 = new BN(0);
+  var y2 = new BN(1);
 
-function encodeStack (signatures, scriptPubKey) {
-  typeforce([partialSignature], signatures)
+  // NOTE: all vectors are roots of: a + b * lambda = 0 (mod n)
+  var a0;
+  var b0;
+  // First vector
+  var a1;
+  var b1;
+  // Second vector
+  var a2;
+  var b2;
 
-  if (scriptPubKey) {
-    var scriptData = bscript.multisig.output.decode(scriptPubKey)
+  var prevR;
+  var i = 0;
+  var r;
+  var x;
+  while (u.cmpn(0) !== 0) {
+    var q = v.div(u);
+    r = v.sub(q.mul(u));
+    x = x2.sub(q.mul(x1));
+    var y = y2.sub(q.mul(y1));
 
-    if (signatures.length < scriptData.m) {
-      throw new TypeError('Not enough signatures provided')
+    if (!a1 && r.cmp(aprxSqrt) < 0) {
+      a0 = prevR.neg();
+      b0 = x1;
+      a1 = r.neg();
+      b1 = x;
+    } else if (a1 && ++i === 2) {
+      break;
     }
+    prevR = r;
 
-    if (signatures.length > scriptData.pubKeys.length) {
-      throw new TypeError('Too many signatures provided')
-    }
+    v = u;
+    u = r;
+    x2 = x1;
+    x1 = x;
+    y2 = y1;
+    y1 = y;
   }
+  a2 = r.neg();
+  b2 = x;
 
-  return [].concat(EMPTY_BUFFER, signatures)
-}
+  var len1 = a1.sqr().add(b1.sqr());
+  var len2 = a2.sqr().add(b2.sqr());
+  if (len2.cmp(len1) >= 0) {
+    a2 = a0;
+    b2 = b0;
+  }
 
-function encode (signatures, scriptPubKey) {
-  return bscript.compile(encodeStack(signatures, scriptPubKey))
-}
+  // Normalize signs
+  if (a1.negative) {
+    a1 = a1.neg();
+    b1 = b1.neg();
+  }
+  if (a2.negative) {
+    a2 = a2.neg();
+    b2 = b2.neg();
+  }
 
-function decodeStack (stack, allowIncomplete) {
-  typeforce(check, stack, allowIncomplete)
-  return stack.slice(1)
-}
+  return [
+    { a: a1, b: b1 },
+    { a: a2, b: b2 }
+  ];
+};
 
-function decode (buffer, allowIncomplete) {
-  var stack = bscript.decompile(buffer)
-  return decodeStack(stack, allowIncomplete)
-}
+ShortCurve.prototype._endoSplit = function _endoSplit(k) {
+  var basis = this.endo.basis;
+  var v1 = basis[0];
+  var v2 = basis[1];
 
-module.exports = {
-  check: check,
-  decode: decode,
-  decodeStack: decodeStack,
-  encode: encode,
-  encodeStack: encodeStack
-}
+  var c1 = v2.b.mul(k).divRound(this.n);
+  var c2 = v1.b.neg().mul(k).divRound(this.n);
 
-},{"../../script":52,"bitcoin-ops":40,"safe-buffer":98,"typeforce":109}],57:[function(require,module,exports){
-// m [pubKeys ...] n OP_CHECKMULTISIG
+  var p1 = c1.mul(v1.a);
+  var p2 = c2.mul(v2.a);
+  var q1 = c1.mul(v1.b);
+  var q2 = c2.mul(v2.b);
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
-var OP_INT_BASE = OPS.OP_RESERVED // OP_1 - 1
+  // Calculate answer
+  var k1 = k.sub(p1).sub(p2);
+  var k2 = q1.add(q2).neg();
+  return { k1: k1, k2: k2 };
+};
 
-function check (script, allowIncomplete) {
-  var chunks = bscript.decompile(script)
+ShortCurve.prototype.pointFromX = function pointFromX(x, odd) {
+  x = new BN(x, 16);
+  if (!x.red)
+    x = x.toRed(this.red);
 
-  if (chunks.length < 4) return false
-  if (chunks[chunks.length - 1] !== OPS.OP_CHECKMULTISIG) return false
-  if (!types.Number(chunks[0])) return false
-  if (!types.Number(chunks[chunks.length - 2])) return false
-  var m = chunks[0] - OP_INT_BASE
-  var n = chunks[chunks.length - 2] - OP_INT_BASE
+  var y2 = x.redSqr().redMul(x).redIAdd(x.redMul(this.a)).redIAdd(this.b);
+  var y = y2.redSqrt();
+  if (y.redSqr().redSub(y2).cmp(this.zero) !== 0)
+    throw new Error('invalid point');
 
-  if (m <= 0) return false
-  if (n > 16) return false
-  if (m > n) return false
-  if (n !== chunks.length - 3) return false
-  if (allowIncomplete) return true
+  // XXX Is there any way to tell if the number is odd without converting it
+  // to non-red form?
+  var isOdd = y.fromRed().isOdd();
+  if (odd && !isOdd || !odd && isOdd)
+    y = y.redNeg();
 
-  var keys = chunks.slice(1, -2)
-  return keys.every(bscript.isCanonicalPubKey)
-}
-check.toJSON = function () { return 'multi-sig output' }
+  return this.point(x, y);
+};
 
-function encode (m, pubKeys) {
-  typeforce({
-    m: types.Number,
-    pubKeys: [bscript.isCanonicalPubKey]
-  }, {
-    m: m,
-    pubKeys: pubKeys
-  })
+ShortCurve.prototype.validate = function validate(point) {
+  if (point.inf)
+    return true;
 
-  var n = pubKeys.length
-  if (n < m) throw new TypeError('Not enough pubKeys provided')
+  var x = point.x;
+  var y = point.y;
 
-  return bscript.compile([].concat(
-    OP_INT_BASE + m,
-    pubKeys,
-    OP_INT_BASE + n,
-    OPS.OP_CHECKMULTISIG
-  ))
-}
+  var ax = this.a.redMul(x);
+  var rhs = x.redSqr().redMul(x).redIAdd(ax).redIAdd(this.b);
+  return y.redSqr().redISub(rhs).cmpn(0) === 0;
+};
 
-function decode (buffer, allowIncomplete) {
-  var chunks = bscript.decompile(buffer)
-  typeforce(check, chunks, allowIncomplete)
+ShortCurve.prototype._endoWnafMulAdd =
+    function _endoWnafMulAdd(points, coeffs, jacobianResult) {
+  var npoints = this._endoWnafT1;
+  var ncoeffs = this._endoWnafT2;
+  for (var i = 0; i < points.length; i++) {
+    var split = this._endoSplit(coeffs[i]);
+    var p = points[i];
+    var beta = p._getBeta();
+
+    if (split.k1.negative) {
+      split.k1.ineg();
+      p = p.neg(true);
+    }
+    if (split.k2.negative) {
+      split.k2.ineg();
+      beta = beta.neg(true);
+    }
 
-  return {
-    m: chunks[0] - OP_INT_BASE,
-    pubKeys: chunks.slice(1, -2)
+    npoints[i * 2] = p;
+    npoints[i * 2 + 1] = beta;
+    ncoeffs[i * 2] = split.k1;
+    ncoeffs[i * 2 + 1] = split.k2;
   }
-}
+  var res = this._wnafMulAdd(1, npoints, ncoeffs, i * 2, jacobianResult);
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
+  // Clean-up references to points and coefficients
+  for (var j = 0; j < i * 2; j++) {
+    npoints[j] = null;
+    ncoeffs[j] = null;
+  }
+  return res;
+};
+
+function Point(curve, x, y, isRed) {
+  Base.BasePoint.call(this, curve, 'affine');
+  if (x === null && y === null) {
+    this.x = null;
+    this.y = null;
+    this.inf = true;
+  } else {
+    this.x = new BN(x, 16);
+    this.y = new BN(y, 16);
+    // Force redgomery representation when loading from JSON
+    if (isRed) {
+      this.x.forceRed(this.curve.red);
+      this.y.forceRed(this.curve.red);
+    }
+    if (!this.x.red)
+      this.x = this.x.toRed(this.curve.red);
+    if (!this.y.red)
+      this.y = this.y.toRed(this.curve.red);
+    this.inf = false;
+  }
 }
+inherits(Point, Base.BasePoint);
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"typeforce":109}],58:[function(require,module,exports){
-// OP_RETURN {data}
+ShortCurve.prototype.point = function point(x, y, isRed) {
+  return new Point(this, x, y, isRed);
+};
 
-var bscript = require('../script')
-var types = require('../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+ShortCurve.prototype.pointFromJSON = function pointFromJSON(obj, red) {
+  return Point.fromJSON(this, obj, red);
+};
 
-function check (script) {
-  var buffer = bscript.compile(script)
+Point.prototype._getBeta = function _getBeta() {
+  if (!this.curve.endo)
+    return;
 
-  return buffer.length > 1 &&
-    buffer[0] === OPS.OP_RETURN
-}
-check.toJSON = function () { return 'null data output' }
+  var pre = this.precomputed;
+  if (pre && pre.beta)
+    return pre.beta;
 
-function encode (data) {
-  typeforce(types.Buffer, data)
+  var beta = this.curve.point(this.x.redMul(this.curve.endo.beta), this.y);
+  if (pre) {
+    var curve = this.curve;
+    var endoMul = function(p) {
+      return curve.point(p.x.redMul(curve.endo.beta), p.y);
+    };
+    pre.beta = beta;
+    beta.precomputed = {
+      beta: null,
+      naf: pre.naf && {
+        wnd: pre.naf.wnd,
+        points: pre.naf.points.map(endoMul)
+      },
+      doubles: pre.doubles && {
+        step: pre.doubles.step,
+        points: pre.doubles.points.map(endoMul)
+      }
+    };
+  }
+  return beta;
+};
 
-  return bscript.compile([OPS.OP_RETURN, data])
-}
+Point.prototype.toJSON = function toJSON() {
+  if (!this.precomputed)
+    return [ this.x, this.y ];
 
-function decode (buffer) {
-  typeforce(check, buffer)
+  return [ this.x, this.y, this.precomputed && {
+    doubles: this.precomputed.doubles && {
+      step: this.precomputed.doubles.step,
+      points: this.precomputed.doubles.points.slice(1)
+    },
+    naf: this.precomputed.naf && {
+      wnd: this.precomputed.naf.wnd,
+      points: this.precomputed.naf.points.slice(1)
+    }
+  } ];
+};
 
-  return buffer.slice(2)
-}
+Point.fromJSON = function fromJSON(curve, obj, red) {
+  if (typeof obj === 'string')
+    obj = JSON.parse(obj);
+  var res = curve.point(obj[0], obj[1], red);
+  if (!obj[2])
+    return res;
 
-module.exports = {
-  output: {
-    check: check,
-    decode: decode,
-    encode: encode
+  function obj2point(obj) {
+    return curve.point(obj[0], obj[1], red);
   }
-}
-
-},{"../script":52,"../types":78,"bitcoin-ops":40,"typeforce":109}],59:[function(require,module,exports){
-arguments[4][55][0].apply(exports,arguments)
-},{"./input":60,"./output":61,"dup":55}],60:[function(require,module,exports){
-// {signature}
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
+  var pre = obj[2];
+  res.precomputed = {
+    beta: null,
+    doubles: pre.doubles && {
+      step: pre.doubles.step,
+      points: [ res ].concat(pre.doubles.points.map(obj2point))
+    },
+    naf: pre.naf && {
+      wnd: pre.naf.wnd,
+      points: [ res ].concat(pre.naf.points.map(obj2point))
+    }
+  };
+  return res;
+};
 
-function check (script) {
-  var chunks = bscript.decompile(script)
+Point.prototype.inspect = function inspect() {
+  if (this.isInfinity())
+    return '<EC Point Infinity>';
+  return '<EC Point x: ' + this.x.fromRed().toString(16, 2) +
+      ' y: ' + this.y.fromRed().toString(16, 2) + '>';
+};
 
-  return chunks.length === 1 &&
-    bscript.isCanonicalSignature(chunks[0])
-}
-check.toJSON = function () { return 'pubKey input' }
+Point.prototype.isInfinity = function isInfinity() {
+  return this.inf;
+};
 
-function encodeStack (signature) {
-  typeforce(types.Buffer, signature)
-  return [signature]
-}
+Point.prototype.add = function add(p) {
+  // O + P = P
+  if (this.inf)
+    return p;
 
-function encode (signature) {
-  return bscript.compile(encodeStack(signature))
-}
+  // P + O = P
+  if (p.inf)
+    return this;
 
-function decodeStack (stack) {
-  typeforce(check, stack)
-  return stack[0]
-}
+  // P + P = 2P
+  if (this.eq(p))
+    return this.dbl();
 
-function decode (buffer) {
-  var stack = bscript.decompile(buffer)
-  return decodeStack(stack)
-}
+  // P + (-P) = O
+  if (this.neg().eq(p))
+    return this.curve.point(null, null);
 
-module.exports = {
-  check: check,
-  decode: decode,
-  decodeStack: decodeStack,
-  encode: encode,
-  encodeStack: encodeStack
-}
+  // P + Q = O
+  if (this.x.cmp(p.x) === 0)
+    return this.curve.point(null, null);
 
-},{"../../script":52,"../../types":78,"typeforce":109}],61:[function(require,module,exports){
-// {pubKey} OP_CHECKSIG
+  var c = this.y.redSub(p.y);
+  if (c.cmpn(0) !== 0)
+    c = c.redMul(this.x.redSub(p.x).redInvm());
+  var nx = c.redSqr().redISub(this.x).redISub(p.x);
+  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
+  return this.curve.point(nx, ny);
+};
 
-var bscript = require('../../script')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+Point.prototype.dbl = function dbl() {
+  if (this.inf)
+    return this;
 
-function check (script) {
-  var chunks = bscript.decompile(script)
+  // 2P = O
+  var ys1 = this.y.redAdd(this.y);
+  if (ys1.cmpn(0) === 0)
+    return this.curve.point(null, null);
 
-  return chunks.length === 2 &&
-    bscript.isCanonicalPubKey(chunks[0]) &&
-    chunks[1] === OPS.OP_CHECKSIG
-}
-check.toJSON = function () { return 'pubKey output' }
+  var a = this.curve.a;
 
-function encode (pubKey) {
-  typeforce(bscript.isCanonicalPubKey, pubKey)
+  var x2 = this.x.redSqr();
+  var dyinv = ys1.redInvm();
+  var c = x2.redAdd(x2).redIAdd(x2).redIAdd(a).redMul(dyinv);
 
-  return bscript.compile([pubKey, OPS.OP_CHECKSIG])
-}
+  var nx = c.redSqr().redISub(this.x.redAdd(this.x));
+  var ny = c.redMul(this.x.redSub(nx)).redISub(this.y);
+  return this.curve.point(nx, ny);
+};
 
-function decode (buffer) {
-  var chunks = bscript.decompile(buffer)
-  typeforce(check, chunks)
+Point.prototype.getX = function getX() {
+  return this.x.fromRed();
+};
 
-  return chunks[0]
-}
+Point.prototype.getY = function getY() {
+  return this.y.fromRed();
+};
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
-}
+Point.prototype.mul = function mul(k) {
+  k = new BN(k, 16);
 
-},{"../../script":52,"bitcoin-ops":40,"typeforce":109}],62:[function(require,module,exports){
-arguments[4][55][0].apply(exports,arguments)
-},{"./input":63,"./output":64,"dup":55}],63:[function(require,module,exports){
-// {signature} {pubKey}
+  if (this._hasDoubles(k))
+    return this.curve._fixedNafMul(this, k);
+  else if (this.curve.endo)
+    return this.curve._endoWnafMulAdd([ this ], [ k ]);
+  else
+    return this.curve._wnafMul(this, k);
+};
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
+Point.prototype.mulAdd = function mulAdd(k1, p2, k2) {
+  var points = [ this, p2 ];
+  var coeffs = [ k1, k2 ];
+  if (this.curve.endo)
+    return this.curve._endoWnafMulAdd(points, coeffs);
+  else
+    return this.curve._wnafMulAdd(1, points, coeffs, 2);
+};
 
-function check (script) {
-  var chunks = bscript.decompile(script)
+Point.prototype.jmulAdd = function jmulAdd(k1, p2, k2) {
+  var points = [ this, p2 ];
+  var coeffs = [ k1, k2 ];
+  if (this.curve.endo)
+    return this.curve._endoWnafMulAdd(points, coeffs, true);
+  else
+    return this.curve._wnafMulAdd(1, points, coeffs, 2, true);
+};
 
-  return chunks.length === 2 &&
-    bscript.isCanonicalSignature(chunks[0]) &&
-    bscript.isCanonicalPubKey(chunks[1])
-}
-check.toJSON = function () { return 'pubKeyHash input' }
+Point.prototype.eq = function eq(p) {
+  return this === p ||
+         this.inf === p.inf &&
+             (this.inf || this.x.cmp(p.x) === 0 && this.y.cmp(p.y) === 0);
+};
 
-function encodeStack (signature, pubKey) {
-  typeforce({
-    signature: types.Buffer, pubKey: types.Buffer
-  }, {
-    signature: signature, pubKey: pubKey
-  })
+Point.prototype.neg = function neg(_precompute) {
+  if (this.inf)
+    return this;
 
-  return [signature, pubKey]
-}
+  var res = this.curve.point(this.x, this.y.redNeg());
+  if (_precompute && this.precomputed) {
+    var pre = this.precomputed;
+    var negate = function(p) {
+      return p.neg();
+    };
+    res.precomputed = {
+      naf: pre.naf && {
+        wnd: pre.naf.wnd,
+        points: pre.naf.points.map(negate)
+      },
+      doubles: pre.doubles && {
+        step: pre.doubles.step,
+        points: pre.doubles.points.map(negate)
+      }
+    };
+  }
+  return res;
+};
 
-function encode (signature, pubKey) {
-  return bscript.compile(encodeStack(signature, pubKey))
-}
+Point.prototype.toJ = function toJ() {
+  if (this.inf)
+    return this.curve.jpoint(null, null, null);
 
-function decodeStack (stack) {
-  typeforce(check, stack)
+  var res = this.curve.jpoint(this.x, this.y, this.curve.one);
+  return res;
+};
 
-  return {
-    signature: stack[0],
-    pubKey: stack[1]
+function JPoint(curve, x, y, z) {
+  Base.BasePoint.call(this, curve, 'jacobian');
+  if (x === null && y === null && z === null) {
+    this.x = this.curve.one;
+    this.y = this.curve.one;
+    this.z = new BN(0);
+  } else {
+    this.x = new BN(x, 16);
+    this.y = new BN(y, 16);
+    this.z = new BN(z, 16);
   }
-}
-
-function decode (buffer) {
-  var stack = bscript.decompile(buffer)
-  return decodeStack(stack)
-}
+  if (!this.x.red)
+    this.x = this.x.toRed(this.curve.red);
+  if (!this.y.red)
+    this.y = this.y.toRed(this.curve.red);
+  if (!this.z.red)
+    this.z = this.z.toRed(this.curve.red);
 
-module.exports = {
-  check: check,
-  decode: decode,
-  decodeStack: decodeStack,
-  encode: encode,
-  encodeStack: encodeStack
+  this.zOne = this.z === this.curve.one;
 }
+inherits(JPoint, Base.BasePoint);
 
-},{"../../script":52,"../../types":78,"typeforce":109}],64:[function(require,module,exports){
-// OP_DUP OP_HASH160 {pubKeyHash} OP_EQUALVERIFY OP_CHECKSIG
-
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+ShortCurve.prototype.jpoint = function jpoint(x, y, z) {
+  return new JPoint(this, x, y, z);
+};
 
-function check (script) {
-  var buffer = bscript.compile(script)
+JPoint.prototype.toP = function toP() {
+  if (this.isInfinity())
+    return this.curve.point(null, null);
 
-  return buffer.length === 25 &&
-    buffer[0] === OPS.OP_DUP &&
-    buffer[1] === OPS.OP_HASH160 &&
-    buffer[2] === 0x14 &&
-    buffer[23] === OPS.OP_EQUALVERIFY &&
-    buffer[24] === OPS.OP_CHECKSIG
-}
-check.toJSON = function () { return 'pubKeyHash output' }
+  var zinv = this.z.redInvm();
+  var zinv2 = zinv.redSqr();
+  var ax = this.x.redMul(zinv2);
+  var ay = this.y.redMul(zinv2).redMul(zinv);
 
-function encode (pubKeyHash) {
-  typeforce(types.Hash160bit, pubKeyHash)
+  return this.curve.point(ax, ay);
+};
 
-  return bscript.compile([
-    OPS.OP_DUP,
-    OPS.OP_HASH160,
-    pubKeyHash,
-    OPS.OP_EQUALVERIFY,
-    OPS.OP_CHECKSIG
-  ])
-}
+JPoint.prototype.neg = function neg() {
+  return this.curve.jpoint(this.x, this.y.redNeg(), this.z);
+};
 
-function decode (buffer) {
-  typeforce(check, buffer)
+JPoint.prototype.add = function add(p) {
+  // O + P = P
+  if (this.isInfinity())
+    return p;
 
-  return buffer.slice(3, 23)
-}
+  // P + O = P
+  if (p.isInfinity())
+    return this;
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
-}
+  // 12M + 4S + 7A
+  var pz2 = p.z.redSqr();
+  var z2 = this.z.redSqr();
+  var u1 = this.x.redMul(pz2);
+  var u2 = p.x.redMul(z2);
+  var s1 = this.y.redMul(pz2.redMul(p.z));
+  var s2 = p.y.redMul(z2.redMul(this.z));
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"typeforce":109}],65:[function(require,module,exports){
-arguments[4][55][0].apply(exports,arguments)
-},{"./input":66,"./output":67,"dup":55}],66:[function(require,module,exports){
-// <scriptSig> {serialized scriptPubKey script}
+  var h = u1.redSub(u2);
+  var r = s1.redSub(s2);
+  if (h.cmpn(0) === 0) {
+    if (r.cmpn(0) !== 0)
+      return this.curve.jpoint(null, null, null);
+    else
+      return this.dbl();
+  }
 
-var Buffer = require('safe-buffer').Buffer
-var bscript = require('../../script')
-var typeforce = require('typeforce')
+  var h2 = h.redSqr();
+  var h3 = h2.redMul(h);
+  var v = u1.redMul(h2);
 
-function check (script, allowIncomplete) {
-  var chunks = bscript.decompile(script)
-  if (chunks.length < 1) return false
+  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
+  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
+  var nz = this.z.redMul(p.z).redMul(h);
 
-  var lastChunk = chunks[chunks.length - 1]
-  if (!Buffer.isBuffer(lastChunk)) return false
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-  var scriptSigChunks = bscript.decompile(bscript.compile(chunks.slice(0, -1)))
-  var redeemScriptChunks = bscript.decompile(lastChunk)
+JPoint.prototype.mixedAdd = function mixedAdd(p) {
+  // O + P = P
+  if (this.isInfinity())
+    return p.toJ();
 
-  // is redeemScript a valid script?
-  if (redeemScriptChunks.length === 0) return false
+  // P + O = P
+  if (p.isInfinity())
+    return this;
 
-  // is redeemScriptSig push only?
-  if (!bscript.isPushOnly(scriptSigChunks)) return false
+  // 8M + 3S + 7A
+  var z2 = this.z.redSqr();
+  var u1 = this.x;
+  var u2 = p.x.redMul(z2);
+  var s1 = this.y;
+  var s2 = p.y.redMul(z2).redMul(this.z);
 
-  var inputType = bscript.classifyInput(scriptSigChunks, allowIncomplete)
-  var outputType = bscript.classifyOutput(redeemScriptChunks)
-  if (chunks.length === 1) {
-    return outputType === bscript.types.P2WSH || outputType === bscript.types.P2WPKH
+  var h = u1.redSub(u2);
+  var r = s1.redSub(s2);
+  if (h.cmpn(0) === 0) {
+    if (r.cmpn(0) !== 0)
+      return this.curve.jpoint(null, null, null);
+    else
+      return this.dbl();
   }
-  return inputType === outputType
-}
-check.toJSON = function () { return 'scriptHash input' }
-
-function encodeStack (redeemScriptStack, redeemScript) {
-  var serializedScriptPubKey = bscript.compile(redeemScript)
 
-  return [].concat(redeemScriptStack, serializedScriptPubKey)
-}
+  var h2 = h.redSqr();
+  var h3 = h2.redMul(h);
+  var v = u1.redMul(h2);
 
-function encode (redeemScriptSig, redeemScript) {
-  var redeemScriptStack = bscript.decompile(redeemScriptSig)
+  var nx = r.redSqr().redIAdd(h3).redISub(v).redISub(v);
+  var ny = r.redMul(v.redISub(nx)).redISub(s1.redMul(h3));
+  var nz = this.z.redMul(h);
 
-  return bscript.compile(encodeStack(redeemScriptStack, redeemScript))
-}
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-function decodeStack (stack) {
-  typeforce(check, stack)
+JPoint.prototype.dblp = function dblp(pow) {
+  if (pow === 0)
+    return this;
+  if (this.isInfinity())
+    return this;
+  if (!pow)
+    return this.dbl();
 
-  return {
-    redeemScriptStack: stack.slice(0, -1),
-    redeemScript: stack[stack.length - 1]
+  if (this.curve.zeroA || this.curve.threeA) {
+    var r = this;
+    for (var i = 0; i < pow; i++)
+      r = r.dbl();
+    return r;
   }
-}
 
-function decode (buffer) {
-  var stack = bscript.decompile(buffer)
-  var result = decodeStack(stack)
-  result.redeemScriptSig = bscript.compile(result.redeemScriptStack)
-  delete result.redeemScriptStack
-  return result
-}
+  // 1M + 2S + 1A + N * (4S + 5M + 8A)
+  // N = 1 => 6M + 6S + 9A
+  var a = this.curve.a;
+  var tinv = this.curve.tinv;
 
-module.exports = {
-  check: check,
-  decode: decode,
-  decodeStack: decodeStack,
-  encode: encode,
-  encodeStack: encodeStack
-}
+  var jx = this.x;
+  var jy = this.y;
+  var jz = this.z;
+  var jz4 = jz.redSqr().redSqr();
 
-},{"../../script":52,"safe-buffer":98,"typeforce":109}],67:[function(require,module,exports){
-// OP_HASH160 {scriptHash} OP_EQUAL
+  // Reuse results
+  var jyd = jy.redAdd(jy);
+  for (var i = 0; i < pow; i++) {
+    var jx2 = jx.redSqr();
+    var jyd2 = jyd.redSqr();
+    var jyd4 = jyd2.redSqr();
+    var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+    var t1 = jx.redMul(jyd2);
+    var nx = c.redSqr().redISub(t1.redAdd(t1));
+    var t2 = t1.redISub(nx);
+    var dny = c.redMul(t2);
+    dny = dny.redIAdd(dny).redISub(jyd4);
+    var nz = jyd.redMul(jz);
+    if (i + 1 < pow)
+      jz4 = jz4.redMul(jyd4);
 
-function check (script) {
-  var buffer = bscript.compile(script)
+    jx = nx;
+    jz = nz;
+    jyd = dny;
+  }
 
-  return buffer.length === 23 &&
-    buffer[0] === OPS.OP_HASH160 &&
-    buffer[1] === 0x14 &&
-    buffer[22] === OPS.OP_EQUAL
-}
-check.toJSON = function () { return 'scriptHash output' }
+  return this.curve.jpoint(jx, jyd.redMul(tinv), jz);
+};
 
-function encode (scriptHash) {
-  typeforce(types.Hash160bit, scriptHash)
+JPoint.prototype.dbl = function dbl() {
+  if (this.isInfinity())
+    return this;
 
-  return bscript.compile([OPS.OP_HASH160, scriptHash, OPS.OP_EQUAL])
-}
+  if (this.curve.zeroA)
+    return this._zeroDbl();
+  else if (this.curve.threeA)
+    return this._threeDbl();
+  else
+    return this._dbl();
+};
 
-function decode (buffer) {
-  typeforce(check, buffer)
+JPoint.prototype._zeroDbl = function _zeroDbl() {
+  var nx;
+  var ny;
+  var nz;
+  // Z = 1
+  if (this.zOne) {
+    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
+    //     #doubling-mdbl-2007-bl
+    // 1M + 5S + 14A
 
-  return buffer.slice(2, 22)
-}
+    // XX = X1^2
+    var xx = this.x.redSqr();
+    // YY = Y1^2
+    var yy = this.y.redSqr();
+    // YYYY = YY^2
+    var yyyy = yy.redSqr();
+    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
+    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
+    s = s.redIAdd(s);
+    // M = 3 * XX + a; a = 0
+    var m = xx.redAdd(xx).redIAdd(xx);
+    // T = M ^ 2 - 2*S
+    var t = m.redSqr().redISub(s).redISub(s);
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
-}
+    // 8 * YYYY
+    var yyyy8 = yyyy.redIAdd(yyyy);
+    yyyy8 = yyyy8.redIAdd(yyyy8);
+    yyyy8 = yyyy8.redIAdd(yyyy8);
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"typeforce":109}],68:[function(require,module,exports){
-module.exports = {
-  output: require('./output')
-}
+    // X3 = T
+    nx = t;
+    // Y3 = M * (S - T) - 8 * YYYY
+    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
+    // Z3 = 2*Y1
+    nz = this.y.redAdd(this.y);
+  } else {
+    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html
+    //     #doubling-dbl-2009-l
+    // 2M + 5S + 13A
 
-},{"./output":69}],69:[function(require,module,exports){
-// OP_RETURN {aa21a9ed} {commitment}
+    // A = X1^2
+    var a = this.x.redSqr();
+    // B = Y1^2
+    var b = this.y.redSqr();
+    // C = B^2
+    var c = b.redSqr();
+    // D = 2 * ((X1 + B)^2 - A - C)
+    var d = this.x.redAdd(b).redSqr().redISub(a).redISub(c);
+    d = d.redIAdd(d);
+    // E = 3 * A
+    var e = a.redAdd(a).redIAdd(a);
+    // F = E^2
+    var f = e.redSqr();
 
-var Buffer = require('safe-buffer').Buffer
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+    // 8 * C
+    var c8 = c.redIAdd(c);
+    c8 = c8.redIAdd(c8);
+    c8 = c8.redIAdd(c8);
 
-var HEADER = Buffer.from('aa21a9ed', 'hex')
+    // X3 = F - 2 * D
+    nx = f.redISub(d).redISub(d);
+    // Y3 = E * (D - X3) - 8 * C
+    ny = e.redMul(d.redISub(nx)).redISub(c8);
+    // Z3 = 2 * Y1 * Z1
+    nz = this.y.redMul(this.z);
+    nz = nz.redIAdd(nz);
+  }
 
-function check (script) {
-  var buffer = bscript.compile(script)
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-  return buffer.length > 37 &&
-    buffer[0] === OPS.OP_RETURN &&
-    buffer[1] === 0x24 &&
-    buffer.slice(2, 6).equals(HEADER)
-}
+JPoint.prototype._threeDbl = function _threeDbl() {
+  var nx;
+  var ny;
+  var nz;
+  // Z = 1
+  if (this.zOne) {
+    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html
+    //     #doubling-mdbl-2007-bl
+    // 1M + 5S + 15A
 
-check.toJSON = function () { return 'Witness commitment output' }
+    // XX = X1^2
+    var xx = this.x.redSqr();
+    // YY = Y1^2
+    var yy = this.y.redSqr();
+    // YYYY = YY^2
+    var yyyy = yy.redSqr();
+    // S = 2 * ((X1 + YY)^2 - XX - YYYY)
+    var s = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
+    s = s.redIAdd(s);
+    // M = 3 * XX + a
+    var m = xx.redAdd(xx).redIAdd(xx).redIAdd(this.curve.a);
+    // T = M^2 - 2 * S
+    var t = m.redSqr().redISub(s).redISub(s);
+    // X3 = T
+    nx = t;
+    // Y3 = M * (S - T) - 8 * YYYY
+    var yyyy8 = yyyy.redIAdd(yyyy);
+    yyyy8 = yyyy8.redIAdd(yyyy8);
+    yyyy8 = yyyy8.redIAdd(yyyy8);
+    ny = m.redMul(s.redISub(t)).redISub(yyyy8);
+    // Z3 = 2 * Y1
+    nz = this.y.redAdd(this.y);
+  } else {
+    // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-3.html#doubling-dbl-2001-b
+    // 3M + 5S
 
-function encode (commitment) {
-  typeforce(types.Hash256bit, commitment)
+    // delta = Z1^2
+    var delta = this.z.redSqr();
+    // gamma = Y1^2
+    var gamma = this.y.redSqr();
+    // beta = X1 * gamma
+    var beta = this.x.redMul(gamma);
+    // alpha = 3 * (X1 - delta) * (X1 + delta)
+    var alpha = this.x.redSub(delta).redMul(this.x.redAdd(delta));
+    alpha = alpha.redAdd(alpha).redIAdd(alpha);
+    // X3 = alpha^2 - 8 * beta
+    var beta4 = beta.redIAdd(beta);
+    beta4 = beta4.redIAdd(beta4);
+    var beta8 = beta4.redAdd(beta4);
+    nx = alpha.redSqr().redISub(beta8);
+    // Z3 = (Y1 + Z1)^2 - gamma - delta
+    nz = this.y.redAdd(this.z).redSqr().redISub(gamma).redISub(delta);
+    // Y3 = alpha * (4 * beta - X3) - 8 * gamma^2
+    var ggamma8 = gamma.redSqr();
+    ggamma8 = ggamma8.redIAdd(ggamma8);
+    ggamma8 = ggamma8.redIAdd(ggamma8);
+    ggamma8 = ggamma8.redIAdd(ggamma8);
+    ny = alpha.redMul(beta4.redISub(nx)).redISub(ggamma8);
+  }
 
-  var buffer = Buffer.allocUnsafe(36)
-  HEADER.copy(buffer, 0)
-  commitment.copy(buffer, 4)
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-  return bscript.compile([OPS.OP_RETURN, buffer])
-}
+JPoint.prototype._dbl = function _dbl() {
+  var a = this.curve.a;
 
-function decode (buffer) {
-  typeforce(check, buffer)
+  // 4M + 6S + 10A
+  var jx = this.x;
+  var jy = this.y;
+  var jz = this.z;
+  var jz4 = jz.redSqr().redSqr();
 
-  return bscript.decompile(buffer)[1].slice(4, 36)
-}
+  var jx2 = jx.redSqr();
+  var jy2 = jy.redSqr();
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
-}
+  var c = jx2.redAdd(jx2).redIAdd(jx2).redIAdd(a.redMul(jz4));
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"safe-buffer":98,"typeforce":109}],70:[function(require,module,exports){
-arguments[4][55][0].apply(exports,arguments)
-},{"./input":71,"./output":72,"dup":55}],71:[function(require,module,exports){
-// {signature} {pubKey}
+  var jxd4 = jx.redAdd(jx);
+  jxd4 = jxd4.redIAdd(jxd4);
+  var t1 = jxd4.redMul(jy2);
+  var nx = c.redSqr().redISub(t1.redAdd(t1));
+  var t2 = t1.redISub(nx);
+
+  var jyd8 = jy2.redSqr();
+  jyd8 = jyd8.redIAdd(jyd8);
+  jyd8 = jyd8.redIAdd(jyd8);
+  jyd8 = jyd8.redIAdd(jyd8);
+  var ny = c.redMul(t2).redISub(jyd8);
+  var nz = jy.redAdd(jy).redMul(jz);
 
-var pkh = require('../pubkeyhash/input')
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-module.exports = {
-  check: pkh.check,
-  decodeStack: pkh.decodeStack,
-  encodeStack: pkh.encodeStack
-}
+JPoint.prototype.trpl = function trpl() {
+  if (!this.curve.zeroA)
+    return this.dbl().add(this);
 
-},{"../pubkeyhash/input":63}],72:[function(require,module,exports){
-// OP_0 {pubKeyHash}
+  // hyperelliptic.org/EFD/g1p/auto-shortw-jacobian-0.html#tripling-tpl-2007-bl
+  // 5M + 10S + ...
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+  // XX = X1^2
+  var xx = this.x.redSqr();
+  // YY = Y1^2
+  var yy = this.y.redSqr();
+  // ZZ = Z1^2
+  var zz = this.z.redSqr();
+  // YYYY = YY^2
+  var yyyy = yy.redSqr();
+  // M = 3 * XX + a * ZZ2; a = 0
+  var m = xx.redAdd(xx).redIAdd(xx);
+  // MM = M^2
+  var mm = m.redSqr();
+  // E = 6 * ((X1 + YY)^2 - XX - YYYY) - MM
+  var e = this.x.redAdd(yy).redSqr().redISub(xx).redISub(yyyy);
+  e = e.redIAdd(e);
+  e = e.redAdd(e).redIAdd(e);
+  e = e.redISub(mm);
+  // EE = E^2
+  var ee = e.redSqr();
+  // T = 16*YYYY
+  var t = yyyy.redIAdd(yyyy);
+  t = t.redIAdd(t);
+  t = t.redIAdd(t);
+  t = t.redIAdd(t);
+  // U = (M + E)^2 - MM - EE - T
+  var u = m.redIAdd(e).redSqr().redISub(mm).redISub(ee).redISub(t);
+  // X3 = 4 * (X1 * EE - 4 * YY * U)
+  var yyu4 = yy.redMul(u);
+  yyu4 = yyu4.redIAdd(yyu4);
+  yyu4 = yyu4.redIAdd(yyu4);
+  var nx = this.x.redMul(ee).redISub(yyu4);
+  nx = nx.redIAdd(nx);
+  nx = nx.redIAdd(nx);
+  // Y3 = 8 * Y1 * (U * (T - U) - E * EE)
+  var ny = this.y.redMul(u.redMul(t.redISub(u)).redISub(e.redMul(ee)));
+  ny = ny.redIAdd(ny);
+  ny = ny.redIAdd(ny);
+  ny = ny.redIAdd(ny);
+  // Z3 = (Z1 + E)^2 - ZZ - EE
+  var nz = this.z.redAdd(e).redSqr().redISub(zz).redISub(ee);
 
-function check (script) {
-  var buffer = bscript.compile(script)
+  return this.curve.jpoint(nx, ny, nz);
+};
 
-  return buffer.length === 22 &&
-    buffer[0] === OPS.OP_0 &&
-    buffer[1] === 0x14
-}
-check.toJSON = function () { return 'Witness pubKeyHash output' }
+JPoint.prototype.mul = function mul(k, kbase) {
+  k = new BN(k, kbase);
 
-function encode (pubKeyHash) {
-  typeforce(types.Hash160bit, pubKeyHash)
+  return this.curve._wnafMul(this, k);
+};
 
-  return bscript.compile([OPS.OP_0, pubKeyHash])
-}
+JPoint.prototype.eq = function eq(p) {
+  if (p.type === 'affine')
+    return this.eq(p.toJ());
 
-function decode (buffer) {
-  typeforce(check, buffer)
+  if (this === p)
+    return true;
 
-  return buffer.slice(2)
-}
+  // x1 * z2^2 == x2 * z1^2
+  var z2 = this.z.redSqr();
+  var pz2 = p.z.redSqr();
+  if (this.x.redMul(pz2).redISub(p.x.redMul(z2)).cmpn(0) !== 0)
+    return false;
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
-}
+  // y1 * z2^3 == y2 * z1^3
+  var z3 = z2.redMul(this.z);
+  var pz3 = pz2.redMul(p.z);
+  return this.y.redMul(pz3).redISub(p.y.redMul(z3)).cmpn(0) === 0;
+};
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"typeforce":109}],73:[function(require,module,exports){
-arguments[4][55][0].apply(exports,arguments)
-},{"./input":74,"./output":75,"dup":55}],74:[function(require,module,exports){
-// {signature} {pubKey}
+JPoint.prototype.eqXToP = function eqXToP(x) {
+  var zs = this.z.redSqr();
+  var rx = x.toRed(this.curve.red).redMul(zs);
+  if (this.x.cmp(rx) === 0)
+    return true;
 
-var p2sh = require('../scripthash/input')
+  var xc = x.clone();
+  var t = this.curve.redN.redMul(zs);
+  for (;;) {
+    xc.iadd(this.curve.n);
+    if (xc.cmp(this.curve.p) >= 0)
+      return false;
 
-module.exports = {
-  check: p2sh.check,
-  decodeStack: p2sh.decodeStack,
-  encodeStack: p2sh.encodeStack
-}
+    rx.redIAdd(t);
+    if (this.x.cmp(rx) === 0)
+      return true;
+  }
+  return false;
+};
 
-},{"../scripthash/input":66}],75:[function(require,module,exports){
-// OP_0 {scriptHash}
+JPoint.prototype.inspect = function inspect() {
+  if (this.isInfinity())
+    return '<EC JPoint Infinity>';
+  return '<EC JPoint x: ' + this.x.toString(16, 2) +
+      ' y: ' + this.y.toString(16, 2) +
+      ' z: ' + this.z.toString(16, 2) + '>';
+};
 
-var bscript = require('../../script')
-var types = require('../../types')
-var typeforce = require('typeforce')
-var OPS = require('bitcoin-ops')
+JPoint.prototype.isInfinity = function isInfinity() {
+  // XXX This code assumes that zero is always zero in red
+  return this.z.cmpn(0) === 0;
+};
 
-function check (script) {
-  var buffer = bscript.compile(script)
+},{"../../elliptic":97,"../curve":100,"bn.js":81,"inherits":121}],103:[function(require,module,exports){
+'use strict';
 
-  return buffer.length === 34 &&
-    buffer[0] === OPS.OP_0 &&
-    buffer[1] === 0x20
-}
-check.toJSON = function () { return 'Witness scriptHash output' }
+var curves = exports;
 
-function encode (scriptHash) {
-  typeforce(types.Hash256bit, scriptHash)
+var hash = require('hash.js');
+var elliptic = require('../elliptic');
 
-  return bscript.compile([OPS.OP_0, scriptHash])
-}
+var assert = elliptic.utils.assert;
 
-function decode (buffer) {
-  typeforce(check, buffer)
+function PresetCurve(options) {
+  if (options.type === 'short')
+    this.curve = new elliptic.curve.short(options);
+  else if (options.type === 'edwards')
+    this.curve = new elliptic.curve.edwards(options);
+  else
+    this.curve = new elliptic.curve.mont(options);
+  this.g = this.curve.g;
+  this.n = this.curve.n;
+  this.hash = options.hash;
 
-  return buffer.slice(2)
+  assert(this.g.validate(), 'Invalid curve');
+  assert(this.g.mul(this.n).isInfinity(), 'Invalid curve, G*N != O');
 }
+curves.PresetCurve = PresetCurve;
 
-module.exports = {
-  check: check,
-  decode: decode,
-  encode: encode
+function defineCurve(name, options) {
+  Object.defineProperty(curves, name, {
+    configurable: true,
+    enumerable: true,
+    get: function() {
+      var curve = new PresetCurve(options);
+      Object.defineProperty(curves, name, {
+        configurable: true,
+        enumerable: true,
+        value: curve
+      });
+      return curve;
+    }
+  });
 }
 
-},{"../../script":52,"../../types":78,"bitcoin-ops":40,"typeforce":109}],76:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var bcrypto = require('./crypto')
-var bscript = require('./script')
-var bufferutils = require('./bufferutils')
-var opcodes = require('bitcoin-ops')
-var typeforce = require('typeforce')
-var types = require('./types')
-var varuint = require('varuint-bitcoin')
+defineCurve('p192', {
+  type: 'short',
+  prime: 'p192',
+  p: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff',
+  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff fffffffc',
+  b: '64210519 e59c80e7 0fa7e9ab 72243049 feb8deec c146b9b1',
+  n: 'ffffffff ffffffff ffffffff 99def836 146bc9b1 b4d22831',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    '188da80e b03090f6 7cbf20eb 43a18800 f4ff0afd 82ff1012',
+    '07192b95 ffc8da78 631011ed 6b24cdd5 73f977a1 1e794811'
+  ]
+});
 
-function varSliceSize (someScript) {
-  var length = someScript.length
+defineCurve('p224', {
+  type: 'short',
+  prime: 'p224',
+  p: 'ffffffff ffffffff ffffffff ffffffff 00000000 00000000 00000001',
+  a: 'ffffffff ffffffff ffffffff fffffffe ffffffff ffffffff fffffffe',
+  b: 'b4050a85 0c04b3ab f5413256 5044b0b7 d7bfd8ba 270b3943 2355ffb4',
+  n: 'ffffffff ffffffff ffffffff ffff16a2 e0b8f03e 13dd2945 5c5c2a3d',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    'b70e0cbd 6bb4bf7f 321390b9 4a03c1d3 56c21122 343280d6 115c1d21',
+    'bd376388 b5f723fb 4c22dfe6 cd4375a0 5a074764 44d58199 85007e34'
+  ]
+});
 
-  return varuint.encodingLength(length) + length
-}
+defineCurve('p256', {
+  type: 'short',
+  prime: null,
+  p: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff ffffffff',
+  a: 'ffffffff 00000001 00000000 00000000 00000000 ffffffff ffffffff fffffffc',
+  b: '5ac635d8 aa3a93e7 b3ebbd55 769886bc 651d06b0 cc53b0f6 3bce3c3e 27d2604b',
+  n: 'ffffffff 00000000 ffffffff ffffffff bce6faad a7179e84 f3b9cac2 fc632551',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    '6b17d1f2 e12c4247 f8bce6e5 63a440f2 77037d81 2deb33a0 f4a13945 d898c296',
+    '4fe342e2 fe1a7f9b 8ee7eb4a 7c0f9e16 2bce3357 6b315ece cbb64068 37bf51f5'
+  ]
+});
+
+defineCurve('p384', {
+  type: 'short',
+  prime: null,
+  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'fffffffe ffffffff 00000000 00000000 ffffffff',
+  a: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'fffffffe ffffffff 00000000 00000000 fffffffc',
+  b: 'b3312fa7 e23ee7e4 988e056b e3f82d19 181d9c6e fe814112 0314088f ' +
+     '5013875a c656398d 8a2ed19d 2a85c8ed d3ec2aef',
+  n: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff c7634d81 ' +
+     'f4372ddf 581a0db2 48b0a77a ecec196a ccc52973',
+  hash: hash.sha384,
+  gRed: false,
+  g: [
+    'aa87ca22 be8b0537 8eb1c71e f320ad74 6e1d3b62 8ba79b98 59f741e0 82542a38 ' +
+    '5502f25d bf55296c 3a545e38 72760ab7',
+    '3617de4a 96262c6f 5d9e98bf 9292dc29 f8f41dbd 289a147c e9da3113 b5f0b8c0 ' +
+    '0a60b1ce 1d7e819d 7a431d7c 90ea0e5f'
+  ]
+});
 
-function vectorSize (someVector) {
-  var length = someVector.length
+defineCurve('p521', {
+  type: 'short',
+  prime: null,
+  p: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'ffffffff ffffffff ffffffff ffffffff ffffffff',
+  a: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'ffffffff ffffffff ffffffff ffffffff fffffffc',
+  b: '00000051 953eb961 8e1c9a1f 929a21a0 b68540ee a2da725b ' +
+     '99b315f3 b8b48991 8ef109e1 56193951 ec7e937b 1652c0bd ' +
+     '3bb1bf07 3573df88 3d2c34f1 ef451fd4 6b503f00',
+  n: '000001ff ffffffff ffffffff ffffffff ffffffff ffffffff ' +
+     'ffffffff ffffffff fffffffa 51868783 bf2f966b 7fcc0148 ' +
+     'f709a5d0 3bb5c9b8 899c47ae bb6fb71e 91386409',
+  hash: hash.sha512,
+  gRed: false,
+  g: [
+    '000000c6 858e06b7 0404e9cd 9e3ecb66 2395b442 9c648139 ' +
+    '053fb521 f828af60 6b4d3dba a14b5e77 efe75928 fe1dc127 ' +
+    'a2ffa8de 3348b3c1 856a429b f97e7e31 c2e5bd66',
+    '00000118 39296a78 9a3bc004 5c8a5fb4 2c7d1bd9 98f54449 ' +
+    '579b4468 17afbd17 273e662c 97ee7299 5ef42640 c550b901 ' +
+    '3fad0761 353c7086 a272c240 88be9476 9fd16650'
+  ]
+});
 
-  return varuint.encodingLength(length) + someVector.reduce(function (sum, witness) {
-    return sum + varSliceSize(witness)
-  }, 0)
-}
+defineCurve('curve25519', {
+  type: 'mont',
+  prime: 'p25519',
+  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
+  a: '76d06',
+  b: '1',
+  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    '9'
+  ]
+});
 
-function Transaction () {
-  this.version = 1
-  this.locktime = 0
-  this.ins = []
-  this.outs = []
-}
+defineCurve('ed25519', {
+  type: 'edwards',
+  prime: 'p25519',
+  p: '7fffffffffffffff ffffffffffffffff ffffffffffffffff ffffffffffffffed',
+  a: '-1',
+  c: '1',
+  // -121665 * (121666^(-1)) (mod P)
+  d: '52036cee2b6ffe73 8cc740797779e898 00700a4d4141d8ab 75eb4dca135978a3',
+  n: '1000000000000000 0000000000000000 14def9dea2f79cd6 5812631a5cf5d3ed',
+  hash: hash.sha256,
+  gRed: false,
+  g: [
+    '216936d3cd6e53fec0a4e231fdd6dc5c692cc7609525a7b2c9562d608f25d51a',
 
-Transaction.DEFAULT_SEQUENCE = 0xffffffff
-Transaction.SIGHASH_ALL = 0x01
-Transaction.SIGHASH_NONE = 0x02
-Transaction.SIGHASH_SINGLE = 0x03
-Transaction.SIGHASH_ANYONECANPAY = 0x80
-Transaction.ADVANCED_TRANSACTION_MARKER = 0x00
-Transaction.ADVANCED_TRANSACTION_FLAG = 0x01
+    // 4/5
+    '6666666666666666666666666666666666666666666666666666666666666658'
+  ]
+});
 
-var EMPTY_SCRIPT = Buffer.allocUnsafe(0)
-var EMPTY_WITNESS = []
-var ZERO = Buffer.from('0000000000000000000000000000000000000000000000000000000000000000', 'hex')
-var ONE = Buffer.from('0000000000000000000000000000000000000000000000000000000000000001', 'hex')
-var VALUE_UINT64_MAX = Buffer.from('ffffffffffffffff', 'hex')
-var BLANK_OUTPUT = {
-  script: EMPTY_SCRIPT,
-  valueBuffer: VALUE_UINT64_MAX
+var pre;
+try {
+  pre = require('./precomputed/secp256k1');
+} catch (e) {
+  pre = undefined;
 }
 
-Transaction.fromBuffer = function (buffer, __noStrict) {
-  var offset = 0
-  function readSlice (n) {
-    offset += n
-    return buffer.slice(offset - n, offset)
-  }
-
-  function readUInt32 () {
-    var i = buffer.readUInt32LE(offset)
-    offset += 4
-    return i
-  }
+defineCurve('secp256k1', {
+  type: 'short',
+  prime: 'k256',
+  p: 'ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff fffffffe fffffc2f',
+  a: '0',
+  b: '7',
+  n: 'ffffffff ffffffff ffffffff fffffffe baaedce6 af48a03b bfd25e8c d0364141',
+  h: '1',
+  hash: hash.sha256,
 
-  function readInt32 () {
-    var i = buffer.readInt32LE(offset)
-    offset += 4
-    return i
-  }
+  // Precomputed endomorphism
+  beta: '7ae96a2b657c07106e64479eac3434e99cf0497512f58995c1396c28719501ee',
+  lambda: '5363ad4cc05c30e0a5261c028812645a122e22ea20816678df02967c1b23bd72',
+  basis: [
+    {
+      a: '3086d221a7d46bcde86c90e49284eb15',
+      b: '-e4437ed6010e88286f547fa90abfe4c3'
+    },
+    {
+      a: '114ca50f7a8e2f3f657c1108d9d44cfd8',
+      b: '3086d221a7d46bcde86c90e49284eb15'
+    }
+  ],
 
-  function readUInt64 () {
-    var i = bufferutils.readUInt64LE(buffer, offset)
-    offset += 8
-    return i
-  }
+  gRed: false,
+  g: [
+    '79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798',
+    '483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8',
+    pre
+  ]
+});
 
-  function readVarInt () {
-    var vi = varuint.decode(buffer, offset)
-    offset += varuint.decode.bytes
-    return vi
-  }
+},{"../elliptic":97,"./precomputed/secp256k1":110,"hash.js":114}],104:[function(require,module,exports){
+'use strict';
 
-  function readVarSlice () {
-    return readSlice(readVarInt())
-  }
+var BN = require('bn.js');
+var HmacDRBG = require('hmac-drbg');
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
 
-  function readVector () {
-    var count = readVarInt()
-    var vector = []
-    for (var i = 0; i < count; i++) vector.push(readVarSlice())
-    return vector
-  }
+var KeyPair = require('./key');
+var Signature = require('./signature');
 
-  var tx = new Transaction()
-  tx.version = readInt32()
+function EC(options) {
+  if (!(this instanceof EC))
+    return new EC(options);
 
-  var marker = buffer.readUInt8(offset)
-  var flag = buffer.readUInt8(offset + 1)
+  // Shortcut `elliptic.ec(curve-name)`
+  if (typeof options === 'string') {
+    assert(elliptic.curves.hasOwnProperty(options), 'Unknown curve ' + options);
 
-  var hasWitnesses = false
-  if (marker === Transaction.ADVANCED_TRANSACTION_MARKER &&
-      flag === Transaction.ADVANCED_TRANSACTION_FLAG) {
-    offset += 2
-    hasWitnesses = true
+    options = elliptic.curves[options];
   }
 
-  var vinLen = readVarInt()
-  for (var i = 0; i < vinLen; ++i) {
-    tx.ins.push({
-      hash: readSlice(32),
-      index: readUInt32(),
-      script: readVarSlice(),
-      sequence: readUInt32(),
-      witness: EMPTY_WITNESS
-    })
-  }
+  // Shortcut for `elliptic.ec(elliptic.curves.curveName)`
+  if (options instanceof elliptic.curves.PresetCurve)
+    options = { curve: options };
 
-  var voutLen = readVarInt()
-  for (i = 0; i < voutLen; ++i) {
-    tx.outs.push({
-      value: readUInt64(),
-      script: readVarSlice()
-    })
-  }
+  this.curve = options.curve.curve;
+  this.n = this.curve.n;
+  this.nh = this.n.ushrn(1);
+  this.g = this.curve.g;
 
-  if (hasWitnesses) {
-    for (i = 0; i < vinLen; ++i) {
-      tx.ins[i].witness = readVector()
-    }
+  // Point on curve
+  this.g = options.curve.g;
+  this.g.precompute(options.curve.n.bitLength() + 1);
 
-    // was this pointless?
-    if (!tx.hasWitnesses()) throw new Error('Transaction has superfluous witness data')
-  }
+  // Hash for function for DRBG
+  this.hash = options.hash || options.curve.hash;
+}
+module.exports = EC;
 
-  tx.locktime = readUInt32()
+EC.prototype.keyPair = function keyPair(options) {
+  return new KeyPair(this, options);
+};
 
-  if (__noStrict) return tx
-  if (offset !== buffer.length) throw new Error('Transaction has unexpected data')
+EC.prototype.keyFromPrivate = function keyFromPrivate(priv, enc) {
+  return KeyPair.fromPrivate(this, priv, enc);
+};
 
-  return tx
-}
+EC.prototype.keyFromPublic = function keyFromPublic(pub, enc) {
+  return KeyPair.fromPublic(this, pub, enc);
+};
 
-Transaction.fromHex = function (hex) {
-  return Transaction.fromBuffer(Buffer.from(hex, 'hex'))
-}
+EC.prototype.genKeyPair = function genKeyPair(options) {
+  if (!options)
+    options = {};
 
-Transaction.isCoinbaseHash = function (buffer) {
-  typeforce(types.Hash256bit, buffer)
-  for (var i = 0; i < 32; ++i) {
-    if (buffer[i] !== 0) return false
-  }
-  return true
-}
+  // Instantiate Hmac_DRBG
+  var drbg = new HmacDRBG({
+    hash: this.hash,
+    pers: options.pers,
+    persEnc: options.persEnc || 'utf8',
+    entropy: options.entropy || elliptic.rand(this.hash.hmacStrength),
+    entropyEnc: options.entropy && options.entropyEnc || 'utf8',
+    nonce: this.n.toArray()
+  });
 
-Transaction.prototype.isCoinbase = function () {
-  return this.ins.length === 1 && Transaction.isCoinbaseHash(this.ins[0].hash)
-}
+  var bytes = this.n.byteLength();
+  var ns2 = this.n.sub(new BN(2));
+  do {
+    var priv = new BN(drbg.generate(bytes));
+    if (priv.cmp(ns2) > 0)
+      continue;
 
-Transaction.prototype.addInput = function (hash, index, sequence, scriptSig) {
-  typeforce(types.tuple(
-    types.Hash256bit,
-    types.UInt32,
-    types.maybe(types.UInt32),
-    types.maybe(types.Buffer)
-  ), arguments)
+    priv.iaddn(1);
+    return this.keyFromPrivate(priv);
+  } while (true);
+};
 
-  if (types.Null(sequence)) {
-    sequence = Transaction.DEFAULT_SEQUENCE
-  }
+EC.prototype._truncateToN = function truncateToN(msg, truncOnly) {
+  var delta = msg.byteLength() * 8 - this.n.bitLength();
+  if (delta > 0)
+    msg = msg.ushrn(delta);
+  if (!truncOnly && msg.cmp(this.n) >= 0)
+    return msg.sub(this.n);
+  else
+    return msg;
+};
 
-  // Add the input and return the input's index
-  return (this.ins.push({
-    hash: hash,
-    index: index,
-    script: scriptSig || EMPTY_SCRIPT,
-    sequence: sequence,
-    witness: EMPTY_WITNESS
-  }) - 1)
-}
+EC.prototype.sign = function sign(msg, key, enc, options) {
+  if (typeof enc === 'object') {
+    options = enc;
+    enc = null;
+  }
+  if (!options)
+    options = {};
 
-Transaction.prototype.addOutput = function (scriptPubKey, value) {
-  typeforce(types.tuple(types.Buffer, types.Satoshi), arguments)
+  key = this.keyFromPrivate(key, enc);
+  msg = this._truncateToN(new BN(msg, 16));
 
-  // Add the output and return the output's index
-  return (this.outs.push({
-    script: scriptPubKey,
-    value: value
-  }) - 1)
-}
+  // Zero-extend key to provide enough entropy
+  var bytes = this.n.byteLength();
+  var bkey = key.getPrivate().toArray('be', bytes);
 
-Transaction.prototype.hasWitnesses = function () {
-  return this.ins.some(function (x) {
-    return x.witness.length !== 0
-  })
-}
+  // Zero-extend nonce to have the same byte size as N
+  var nonce = msg.toArray('be', bytes);
 
-Transaction.prototype.weight = function () {
-  var base = this.__byteLength(false)
-  var total = this.__byteLength(true)
-  return base * 3 + total
-}
+  // Instantiate Hmac_DRBG
+  var drbg = new HmacDRBG({
+    hash: this.hash,
+    entropy: bkey,
+    nonce: nonce,
+    pers: options.pers,
+    persEnc: options.persEnc || 'utf8'
+  });
 
-Transaction.prototype.virtualSize = function () {
-  return Math.ceil(this.weight() / 4)
-}
+  // Number of bytes to generate
+  var ns1 = this.n.sub(new BN(1));
 
-Transaction.prototype.byteLength = function () {
-  return this.__byteLength(true)
-}
+  for (var iter = 0; true; iter++) {
+    var k = options.k ?
+        options.k(iter) :
+        new BN(drbg.generate(this.n.byteLength()));
+    k = this._truncateToN(k, true);
+    if (k.cmpn(1) <= 0 || k.cmp(ns1) >= 0)
+      continue;
 
-Transaction.prototype.__byteLength = function (__allowWitness) {
-  var hasWitnesses = __allowWitness && this.hasWitnesses()
+    var kp = this.g.mul(k);
+    if (kp.isInfinity())
+      continue;
 
-  return (
-    (hasWitnesses ? 10 : 8) +
-    varuint.encodingLength(this.ins.length) +
-    varuint.encodingLength(this.outs.length) +
-    this.ins.reduce(function (sum, input) { return sum + 40 + varSliceSize(input.script) }, 0) +
-    this.outs.reduce(function (sum, output) { return sum + 8 + varSliceSize(output.script) }, 0) +
-    (hasWitnesses ? this.ins.reduce(function (sum, input) { return sum + vectorSize(input.witness) }, 0) : 0)
-  )
-}
+    var kpX = kp.getX();
+    var r = kpX.umod(this.n);
+    if (r.cmpn(0) === 0)
+      continue;
 
-Transaction.prototype.clone = function () {
-  var newTx = new Transaction()
-  newTx.version = this.version
-  newTx.locktime = this.locktime
+    var s = k.invm(this.n).mul(r.mul(key.getPrivate()).iadd(msg));
+    s = s.umod(this.n);
+    if (s.cmpn(0) === 0)
+      continue;
 
-  newTx.ins = this.ins.map(function (txIn) {
-    return {
-      hash: txIn.hash,
-      index: txIn.index,
-      script: txIn.script,
-      sequence: txIn.sequence,
-      witness: txIn.witness
-    }
-  })
+    var recoveryParam = (kp.getY().isOdd() ? 1 : 0) |
+                        (kpX.cmp(r) !== 0 ? 2 : 0);
 
-  newTx.outs = this.outs.map(function (txOut) {
-    return {
-      script: txOut.script,
-      value: txOut.value
+    // Use complement of `s`, if it is > `n / 2`
+    if (options.canonical && s.cmp(this.nh) > 0) {
+      s = this.n.sub(s);
+      recoveryParam ^= 1;
     }
-  })
-
-  return newTx
-}
 
-/**
- * Hash transaction for signing a specific input.
- *
- * Bitcoin uses a different hash for each signed transaction input.
- * This method copies the transaction, makes the necessary changes based on the
- * hashType, and then hashes the result.
- * This hash can then be used to sign the provided transaction input.
- */
-Transaction.prototype.hashForSignature = function (inIndex, prevOutScript, hashType) {
-  typeforce(types.tuple(types.UInt32, types.Buffer, /* types.UInt8 */ types.Number), arguments)
+    return new Signature({ r: r, s: s, recoveryParam: recoveryParam });
+  }
+};
 
-  // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L29
-  if (inIndex >= this.ins.length) return ONE
+EC.prototype.verify = function verify(msg, signature, key, enc) {
+  msg = this._truncateToN(new BN(msg, 16));
+  key = this.keyFromPublic(key, enc);
+  signature = new Signature(signature, 'hex');
 
-  // ignore OP_CODESEPARATOR
-  var ourScript = bscript.compile(bscript.decompile(prevOutScript).filter(function (x) {
-    return x !== opcodes.OP_CODESEPARATOR
-  }))
+  // Perform primitive values validation
+  var r = signature.r;
+  var s = signature.s;
+  if (r.cmpn(1) < 0 || r.cmp(this.n) >= 0)
+    return false;
+  if (s.cmpn(1) < 0 || s.cmp(this.n) >= 0)
+    return false;
 
-  var txTmp = this.clone()
+  // Validate signature
+  var sinv = s.invm(this.n);
+  var u1 = sinv.mul(msg).umod(this.n);
+  var u2 = sinv.mul(r).umod(this.n);
 
-  // SIGHASH_NONE: ignore all outputs? (wildcard payee)
-  if ((hashType & 0x1f) === Transaction.SIGHASH_NONE) {
-    txTmp.outs = []
+  if (!this.curve._maxwellTrick) {
+    var p = this.g.mulAdd(u1, key.getPublic(), u2);
+    if (p.isInfinity())
+      return false;
 
-    // ignore sequence numbers (except at inIndex)
-    txTmp.ins.forEach(function (input, i) {
-      if (i === inIndex) return
+    return p.getX().umod(this.n).cmp(r) === 0;
+  }
 
-      input.sequence = 0
-    })
+  // NOTE: Greg Maxwell's trick, inspired by:
+  // https://git.io/vad3K
 
-  // SIGHASH_SINGLE: ignore all outputs, except at the same index?
-  } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE) {
-    // https://github.com/bitcoin/bitcoin/blob/master/src/test/sighash_tests.cpp#L60
-    if (inIndex >= this.outs.length) return ONE
+  var p = this.g.jmulAdd(u1, key.getPublic(), u2);
+  if (p.isInfinity())
+    return false;
 
-    // truncate outputs after
-    txTmp.outs.length = inIndex + 1
+  // Compare `p.x` of Jacobian point with `r`,
+  // this will do `p.x == r * p.z^2` instead of multiplying `p.x` by the
+  // inverse of `p.z^2`
+  return p.eqXToP(r);
+};
 
-    // "blank" outputs before
-    for (var i = 0; i < inIndex; i++) {
-      txTmp.outs[i] = BLANK_OUTPUT
-    }
+EC.prototype.recoverPubKey = function(msg, signature, j, enc) {
+  assert((3 & j) === j, 'The recovery param is more than two bits');
+  signature = new Signature(signature, enc);
 
-    // ignore sequence numbers (except at inIndex)
-    txTmp.ins.forEach(function (input, y) {
-      if (y === inIndex) return
+  var n = this.n;
+  var e = new BN(msg);
+  var r = signature.r;
+  var s = signature.s;
 
-      input.sequence = 0
-    })
-  }
+  // A set LSB signifies that the y-coordinate is odd
+  var isYOdd = j & 1;
+  var isSecondKey = j >> 1;
+  if (r.cmp(this.curve.p.umod(this.curve.n)) >= 0 && isSecondKey)
+    throw new Error('Unable to find sencond key candinate');
 
-  // SIGHASH_ANYONECANPAY: ignore inputs entirely?
-  if (hashType & Transaction.SIGHASH_ANYONECANPAY) {
-    txTmp.ins = [txTmp.ins[inIndex]]
-    txTmp.ins[0].script = ourScript
+  // 1.1. Let x = r + jn.
+  if (isSecondKey)
+    r = this.curve.pointFromX(r.add(this.curve.n), isYOdd);
+  else
+    r = this.curve.pointFromX(r, isYOdd);
 
-  // SIGHASH_ALL: only ignore input scripts
-  } else {
-    // "blank" others input scripts
-    txTmp.ins.forEach(function (input) { input.script = EMPTY_SCRIPT })
-    txTmp.ins[inIndex].script = ourScript
-  }
+  var rInv = signature.r.invm(n);
+  var s1 = n.sub(e).mul(rInv).umod(n);
+  var s2 = s.mul(rInv).umod(n);
 
-  // serialize and hash
-  var buffer = Buffer.allocUnsafe(txTmp.__byteLength(false) + 4)
-  buffer.writeInt32LE(hashType, buffer.length - 4)
-  txTmp.__toBuffer(buffer, 0, false)
+  // 1.6.1 Compute Q = r^-1 (sR -  eG)
+  //               Q = r^-1 (sR + -eG)
+  return this.g.mulAdd(s1, r, s2);
+};
 
-  return bcrypto.hash256(buffer)
-}
+EC.prototype.getKeyRecoveryParam = function(e, signature, Q, enc) {
+  signature = new Signature(signature, enc);
+  if (signature.recoveryParam !== null)
+    return signature.recoveryParam;
 
-Transaction.prototype.hashForWitnessV0 = function (inIndex, prevOutScript, value, hashType) {
-  typeforce(types.tuple(types.UInt32, types.Buffer, types.Satoshi, types.UInt32), arguments)
+  for (var i = 0; i < 4; i++) {
+    var Qprime;
+    try {
+      Qprime = this.recoverPubKey(e, signature, i);
+    } catch (e) {
+      continue;
+    }
 
-  var tbuffer, toffset
-  function writeSlice (slice) { toffset += slice.copy(tbuffer, toffset) }
-  function writeUInt32 (i) { toffset = tbuffer.writeUInt32LE(i, toffset) }
-  function writeUInt64 (i) { toffset = bufferutils.writeUInt64LE(tbuffer, i, toffset) }
-  function writeVarInt (i) {
-    varuint.encode(i, tbuffer, toffset)
-    toffset += varuint.encode.bytes
+    if (Qprime.eq(Q))
+      return i;
   }
-  function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) }
-
-  var hashOutputs = ZERO
-  var hashPrevouts = ZERO
-  var hashSequence = ZERO
+  throw new Error('Unable to find valid recovery factor');
+};
 
-  if (!(hashType & Transaction.SIGHASH_ANYONECANPAY)) {
-    tbuffer = Buffer.allocUnsafe(36 * this.ins.length)
-    toffset = 0
+},{"../../elliptic":97,"./key":105,"./signature":106,"bn.js":81,"hmac-drbg":120}],105:[function(require,module,exports){
+'use strict';
 
-    this.ins.forEach(function (txIn) {
-      writeSlice(txIn.hash)
-      writeUInt32(txIn.index)
-    })
+var BN = require('bn.js');
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
 
-    hashPrevouts = bcrypto.hash256(tbuffer)
-  }
+function KeyPair(ec, options) {
+  this.ec = ec;
+  this.priv = null;
+  this.pub = null;
 
-  if (!(hashType & Transaction.SIGHASH_ANYONECANPAY) &&
-       (hashType & 0x1f) !== Transaction.SIGHASH_SINGLE &&
-       (hashType & 0x1f) !== Transaction.SIGHASH_NONE) {
-    tbuffer = Buffer.allocUnsafe(4 * this.ins.length)
-    toffset = 0
+  // KeyPair(ec, { priv: ..., pub: ... })
+  if (options.priv)
+    this._importPrivate(options.priv, options.privEnc);
+  if (options.pub)
+    this._importPublic(options.pub, options.pubEnc);
+}
+module.exports = KeyPair;
 
-    this.ins.forEach(function (txIn) {
-      writeUInt32(txIn.sequence)
-    })
+KeyPair.fromPublic = function fromPublic(ec, pub, enc) {
+  if (pub instanceof KeyPair)
+    return pub;
 
-    hashSequence = bcrypto.hash256(tbuffer)
-  }
+  return new KeyPair(ec, {
+    pub: pub,
+    pubEnc: enc
+  });
+};
 
-  if ((hashType & 0x1f) !== Transaction.SIGHASH_SINGLE &&
-      (hashType & 0x1f) !== Transaction.SIGHASH_NONE) {
-    var txOutsSize = this.outs.reduce(function (sum, output) {
-      return sum + 8 + varSliceSize(output.script)
-    }, 0)
+KeyPair.fromPrivate = function fromPrivate(ec, priv, enc) {
+  if (priv instanceof KeyPair)
+    return priv;
 
-    tbuffer = Buffer.allocUnsafe(txOutsSize)
-    toffset = 0
+  return new KeyPair(ec, {
+    priv: priv,
+    privEnc: enc
+  });
+};
 
-    this.outs.forEach(function (out) {
-      writeUInt64(out.value)
-      writeVarSlice(out.script)
-    })
+KeyPair.prototype.validate = function validate() {
+  var pub = this.getPublic();
 
-    hashOutputs = bcrypto.hash256(tbuffer)
-  } else if ((hashType & 0x1f) === Transaction.SIGHASH_SINGLE && inIndex < this.outs.length) {
-    var output = this.outs[inIndex]
+  if (pub.isInfinity())
+    return { result: false, reason: 'Invalid public key' };
+  if (!pub.validate())
+    return { result: false, reason: 'Public key is not a point' };
+  if (!pub.mul(this.ec.curve.n).isInfinity())
+    return { result: false, reason: 'Public key * N != O' };
 
-    tbuffer = Buffer.allocUnsafe(8 + varSliceSize(output.script))
-    toffset = 0
-    writeUInt64(output.value)
-    writeVarSlice(output.script)
+  return { result: true, reason: null };
+};
 
-    hashOutputs = bcrypto.hash256(tbuffer)
+KeyPair.prototype.getPublic = function getPublic(compact, enc) {
+  // compact is optional argument
+  if (typeof compact === 'string') {
+    enc = compact;
+    compact = null;
   }
 
-  tbuffer = Buffer.allocUnsafe(156 + varSliceSize(prevOutScript))
-  toffset = 0
+  if (!this.pub)
+    this.pub = this.ec.g.mul(this.priv);
 
-  var input = this.ins[inIndex]
-  writeUInt32(this.version)
-  writeSlice(hashPrevouts)
-  writeSlice(hashSequence)
-  writeSlice(input.hash)
-  writeUInt32(input.index)
-  writeVarSlice(prevOutScript)
-  writeUInt64(value)
-  writeUInt32(input.sequence)
-  writeSlice(hashOutputs)
-  writeUInt32(this.locktime)
-  writeUInt32(hashType)
-  return bcrypto.hash256(tbuffer)
-}
+  if (!enc)
+    return this.pub;
 
-Transaction.prototype.getHash = function () {
-  return bcrypto.hash256(this.__toBuffer(undefined, undefined, false))
-}
+  return this.pub.encode(enc, compact);
+};
 
-Transaction.prototype.getId = function () {
-  // transaction hash's are displayed in reverse order
-  return this.getHash().reverse().toString('hex')
-}
+KeyPair.prototype.getPrivate = function getPrivate(enc) {
+  if (enc === 'hex')
+    return this.priv.toString(16, 2);
+  else
+    return this.priv;
+};
 
-Transaction.prototype.toBuffer = function (buffer, initialOffset) {
-  return this.__toBuffer(buffer, initialOffset, true)
-}
+KeyPair.prototype._importPrivate = function _importPrivate(key, enc) {
+  this.priv = new BN(key, enc || 16);
 
-Transaction.prototype.__toBuffer = function (buffer, initialOffset, __allowWitness) {
-  if (!buffer) buffer = Buffer.allocUnsafe(this.__byteLength(__allowWitness))
+  // Ensure that the priv won't be bigger than n, otherwise we may fail
+  // in fixed multiplication method
+  this.priv = this.priv.umod(this.ec.curve.n);
+};
 
-  var offset = initialOffset || 0
-  function writeSlice (slice) { offset += slice.copy(buffer, offset) }
-  function writeUInt8 (i) { offset = buffer.writeUInt8(i, offset) }
-  function writeUInt32 (i) { offset = buffer.writeUInt32LE(i, offset) }
-  function writeInt32 (i) { offset = buffer.writeInt32LE(i, offset) }
-  function writeUInt64 (i) { offset = bufferutils.writeUInt64LE(buffer, i, offset) }
-  function writeVarInt (i) {
-    varuint.encode(i, buffer, offset)
-    offset += varuint.encode.bytes
+KeyPair.prototype._importPublic = function _importPublic(key, enc) {
+  if (key.x || key.y) {
+    // Montgomery points only have an `x` coordinate.
+    // Weierstrass/Edwards points on the other hand have both `x` and
+    // `y` coordinates.
+    if (this.ec.curve.type === 'mont') {
+      assert(key.x, 'Need x coordinate');
+    } else if (this.ec.curve.type === 'short' ||
+               this.ec.curve.type === 'edwards') {
+      assert(key.x && key.y, 'Need both x and y coordinate');
+    }
+    this.pub = this.ec.curve.point(key.x, key.y);
+    return;
   }
-  function writeVarSlice (slice) { writeVarInt(slice.length); writeSlice(slice) }
-  function writeVector (vector) { writeVarInt(vector.length); vector.forEach(writeVarSlice) }
+  this.pub = this.ec.curve.decodePoint(key, enc);
+};
 
-  writeInt32(this.version)
+// ECDH
+KeyPair.prototype.derive = function derive(pub) {
+  return pub.mul(this.priv).getX();
+};
 
-  var hasWitnesses = __allowWitness && this.hasWitnesses()
+// ECDSA
+KeyPair.prototype.sign = function sign(msg, enc, options) {
+  return this.ec.sign(msg, this, enc, options);
+};
 
-  if (hasWitnesses) {
-    writeUInt8(Transaction.ADVANCED_TRANSACTION_MARKER)
-    writeUInt8(Transaction.ADVANCED_TRANSACTION_FLAG)
-  }
+KeyPair.prototype.verify = function verify(msg, signature) {
+  return this.ec.verify(msg, signature, this);
+};
 
-  writeVarInt(this.ins.length)
+KeyPair.prototype.inspect = function inspect() {
+  return '<Key priv: ' + (this.priv && this.priv.toString(16, 2)) +
+         ' pub: ' + (this.pub && this.pub.inspect()) + ' >';
+};
 
-  this.ins.forEach(function (txIn) {
-    writeSlice(txIn.hash)
-    writeUInt32(txIn.index)
-    writeVarSlice(txIn.script)
-    writeUInt32(txIn.sequence)
-  })
+},{"../../elliptic":97,"bn.js":81}],106:[function(require,module,exports){
+'use strict';
 
-  writeVarInt(this.outs.length)
-  this.outs.forEach(function (txOut) {
-    if (!txOut.valueBuffer) {
-      writeUInt64(txOut.value)
-    } else {
-      writeSlice(txOut.valueBuffer)
-    }
+var BN = require('bn.js');
 
-    writeVarSlice(txOut.script)
-  })
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
 
-  if (hasWitnesses) {
-    this.ins.forEach(function (input) {
-      writeVector(input.witness)
-    })
-  }
+function Signature(options, enc) {
+  if (options instanceof Signature)
+    return options;
 
-  writeUInt32(this.locktime)
+  if (this._importDER(options, enc))
+    return;
 
-  // avoid slicing unless necessary
-  if (initialOffset !== undefined) return buffer.slice(initialOffset, offset)
-  return buffer
+  assert(options.r && options.s, 'Signature without r or s');
+  this.r = new BN(options.r, 16);
+  this.s = new BN(options.s, 16);
+  if (options.recoveryParam === undefined)
+    this.recoveryParam = null;
+  else
+    this.recoveryParam = options.recoveryParam;
 }
+module.exports = Signature;
 
-Transaction.prototype.toHex = function () {
-  return this.toBuffer().toString('hex')
+function Position() {
+  this.place = 0;
 }
 
-Transaction.prototype.setInputScript = function (index, scriptSig) {
-  typeforce(types.tuple(types.Number, types.Buffer), arguments)
-
-  this.ins[index].script = scriptSig
+function getLength(buf, p) {
+  var initial = buf[p.place++];
+  if (!(initial & 0x80)) {
+    return initial;
+  }
+  var octetLen = initial & 0xf;
+  var val = 0;
+  for (var i = 0, off = p.place; i < octetLen; i++, off++) {
+    val <<= 8;
+    val |= buf[off];
+  }
+  p.place = off;
+  return val;
 }
 
-Transaction.prototype.setWitness = function (index, witness) {
-  typeforce(types.tuple(types.Number, [types.Buffer]), arguments)
-
-  this.ins[index].witness = witness
+function rmPadding(buf) {
+  var i = 0;
+  var len = buf.length - 1;
+  while (!buf[i] && !(buf[i + 1] & 0x80) && i < len) {
+    i++;
+  }
+  if (i === 0) {
+    return buf;
+  }
+  return buf.slice(i);
 }
 
-module.exports = Transaction
+Signature.prototype._importDER = function _importDER(data, enc) {
+  data = utils.toArray(data, enc);
+  var p = new Position();
+  if (data[p.place++] !== 0x30) {
+    return false;
+  }
+  var len = getLength(data, p);
+  if ((len + p.place) !== data.length) {
+    return false;
+  }
+  if (data[p.place++] !== 0x02) {
+    return false;
+  }
+  var rlen = getLength(data, p);
+  var r = data.slice(p.place, rlen + p.place);
+  p.place += rlen;
+  if (data[p.place++] !== 0x02) {
+    return false;
+  }
+  var slen = getLength(data, p);
+  if (data.length !== slen + p.place) {
+    return false;
+  }
+  var s = data.slice(p.place, slen + p.place);
+  if (r[0] === 0 && (r[1] & 0x80)) {
+    r = r.slice(1);
+  }
+  if (s[0] === 0 && (s[1] & 0x80)) {
+    s = s.slice(1);
+  }
 
-},{"./bufferutils":44,"./crypto":45,"./script":52,"./types":78,"bitcoin-ops":40,"safe-buffer":98,"typeforce":109,"varuint-bitcoin":111}],77:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var baddress = require('./address')
-var bcrypto = require('./crypto')
-var bscript = require('./script')
-var networks = require('./networks')
-var ops = require('bitcoin-ops')
-var typeforce = require('typeforce')
-var types = require('./types')
-var scriptTypes = bscript.types
-var SIGNABLE = [bscript.types.P2PKH, bscript.types.P2PK, bscript.types.MULTISIG]
-var P2SH = SIGNABLE.concat([bscript.types.P2WPKH, bscript.types.P2WSH])
+  this.r = new BN(r);
+  this.s = new BN(s);
+  this.recoveryParam = null;
 
-var ECPair = require('./ecpair')
-var ECSignature = require('./ecsignature')
-var Transaction = require('./transaction')
+  return true;
+};
 
-function extractChunks (type, chunks, script) {
-  var pubKeys = []
-  var signatures = []
-  switch (type) {
-    case scriptTypes.P2PKH:
-      // if (redeemScript) throw new Error('Nonstandard... P2SH(P2PKH)')
-      pubKeys = chunks.slice(1)
-      signatures = chunks.slice(0, 1)
-      break
+function constructLength(arr, len) {
+  if (len < 0x80) {
+    arr.push(len);
+    return;
+  }
+  var octets = 1 + (Math.log(len) / Math.LN2 >>> 3);
+  arr.push(octets | 0x80);
+  while (--octets) {
+    arr.push((len >>> (octets << 3)) & 0xff);
+  }
+  arr.push(len);
+}
 
-    case scriptTypes.P2PK:
-      pubKeys[0] = script ? bscript.pubKey.output.decode(script) : undefined
-      signatures = chunks.slice(0, 1)
-      break
+Signature.prototype.toDER = function toDER(enc) {
+  var r = this.r.toArray();
+  var s = this.s.toArray();
 
-    case scriptTypes.MULTISIG:
-      if (script) {
-        var multisig = bscript.multisig.output.decode(script)
-        pubKeys = multisig.pubKeys
-      }
+  // Pad values
+  if (r[0] & 0x80)
+    r = [ 0 ].concat(r);
+  // Pad values
+  if (s[0] & 0x80)
+    s = [ 0 ].concat(s);
 
-      signatures = chunks.slice(1).map(function (chunk) {
-        return chunk.length === 0 ? undefined : chunk
-      })
-      break
-  }
+  r = rmPadding(r);
+  s = rmPadding(s);
 
-  return {
-    pubKeys: pubKeys,
-    signatures: signatures
+  while (!s[0] && !(s[1] & 0x80)) {
+    s = s.slice(1);
   }
-}
-function expandInput (scriptSig, witnessStack) {
-  if (scriptSig.length === 0 && witnessStack.length === 0) return {}
+  var arr = [ 0x02 ];
+  constructLength(arr, r.length);
+  arr = arr.concat(r);
+  arr.push(0x02);
+  constructLength(arr, s.length);
+  var backHalf = arr.concat(s);
+  var res = [ 0x30 ];
+  constructLength(res, backHalf.length);
+  res = res.concat(backHalf);
+  return utils.encode(res, enc);
+};
 
-  var prevOutScript
-  var prevOutType
-  var scriptType
-  var script
-  var redeemScript
-  var witnessScript
-  var witnessScriptType
-  var redeemScriptType
-  var witness = false
-  var p2wsh = false
-  var p2sh = false
-  var witnessProgram
-  var chunks
+},{"../../elliptic":97,"bn.js":81}],107:[function(require,module,exports){
+'use strict';
 
-  var scriptSigChunks = bscript.decompile(scriptSig)
-  var sigType = bscript.classifyInput(scriptSigChunks, true)
-  if (sigType === scriptTypes.P2SH) {
-    p2sh = true
-    redeemScript = scriptSigChunks[scriptSigChunks.length - 1]
-    redeemScriptType = bscript.classifyOutput(redeemScript)
-    prevOutScript = bscript.scriptHash.output.encode(bcrypto.hash160(redeemScript))
-    prevOutType = scriptTypes.P2SH
-    script = redeemScript
-  }
+var hash = require('hash.js');
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
+var parseBytes = utils.parseBytes;
+var KeyPair = require('./key');
+var Signature = require('./signature');
 
-  var classifyWitness = bscript.classifyWitness(witnessStack)
-  if (classifyWitness === scriptTypes.P2WSH) {
-    witnessScript = witnessStack[witnessStack.length - 1]
-    witnessScriptType = bscript.classifyOutput(witnessScript)
-    p2wsh = true
-    if (scriptSig.length === 0) {
-      prevOutScript = bscript.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript))
-      prevOutType = scriptTypes.P2WSH
-      if (typeof redeemScript !== 'undefined') {
-        throw new Error('Redeem script given when unnecessary')
-      }
-      // bare witness
-    } else {
-      if (!redeemScript) {
-        throw new Error('No redeemScript provided for P2WSH, but scriptSig non-empty')
-      }
-      witnessProgram = bscript.witnessScriptHash.output.encode(bcrypto.sha256(witnessScript))
-      if (!redeemScript.equals(witnessProgram)) {
-        throw new Error('Redeem script didn\'t match witnessScript')
-      }
-    }
+function EDDSA(curve) {
+  assert(curve === 'ed25519', 'only tested with ed25519 so far');
 
-    if (SIGNABLE.indexOf(bscript.classifyOutput(witnessScript)) === -1) {
-      throw new Error('unsupported witness script')
-    }
-    script = witnessScript
-    scriptType = witnessScriptType
-    chunks = witnessStack.slice(0, -1)
-  } else if (classifyWitness === scriptTypes.P2WPKH) {
-    var key = witnessStack[witnessStack.length - 1]
-    var keyHash = bcrypto.hash160(key)
-    if (scriptSig.length === 0) {
-      prevOutScript = bscript.witnessPubKeyHash.output.encode(keyHash)
-      prevOutType = scriptTypes.P2WPKH
-      if (typeof redeemScript !== 'undefined') {
-        throw new Error('Redeem script given when unnecessary')
-      }
-    } else {
-      if (!redeemScript) {
-        throw new Error('No redeemScript provided for P2WPKH, but scriptSig wasn\'t empty')
-      }
-      witnessProgram = bscript.witnessPubKeyHash.output.encode(keyHash)
-      if (!redeemScript.equals(witnessProgram)) {
-        throw new Error('Redeem script did not have the right witness program')
-      }
-    }
+  if (!(this instanceof EDDSA))
+    return new EDDSA(curve);
 
-    scriptType = scriptTypes.P2PKH
-    chunks = witnessStack
-  } else if (redeemScript) {
-    if (P2SH.indexOf(redeemScriptType) === -1) {
-      throw new Error('Bad redeemscript!')
-    }
+  var curve = elliptic.curves[curve].curve;
+  this.curve = curve;
+  this.g = curve.g;
+  this.g.precompute(curve.n.bitLength() + 1);
 
-    script = redeemScript
-    scriptType = redeemScriptType
-    chunks = scriptSigChunks.slice(0, -1)
-  } else {
-    prevOutType = scriptType = bscript.classifyInput(scriptSig)
-    chunks = scriptSigChunks
-  }
+  this.pointClass = curve.point().constructor;
+  this.encodingLength = Math.ceil(curve.n.bitLength() / 8);
+  this.hash = hash.sha512;
+}
+
+module.exports = EDDSA;
+
+/**
+* @param {Array|String} message - message bytes
+* @param {Array|String|KeyPair} secret - secret bytes or a keypair
+* @returns {Signature} - signature
+*/
+EDDSA.prototype.sign = function sign(message, secret) {
+  message = parseBytes(message);
+  var key = this.keyFromSecret(secret);
+  var r = this.hashInt(key.messagePrefix(), message);
+  var R = this.g.mul(r);
+  var Rencoded = this.encodePoint(R);
+  var s_ = this.hashInt(Rencoded, key.pubBytes(), message)
+               .mul(key.priv());
+  var S = r.add(s_).umod(this.curve.n);
+  return this.makeSignature({ R: R, S: S, Rencoded: Rencoded });
+};
+
+/**
+* @param {Array} message - message bytes
+* @param {Array|String|Signature} sig - sig bytes
+* @param {Array|String|Point|KeyPair} pub - public key
+* @returns {Boolean} - true if public key matches sig of message
+*/
+EDDSA.prototype.verify = function verify(message, sig, pub) {
+  message = parseBytes(message);
+  sig = this.makeSignature(sig);
+  var key = this.keyFromPublic(pub);
+  var h = this.hashInt(sig.Rencoded(), key.pubBytes(), message);
+  var SG = this.g.mul(sig.S());
+  var RplusAh = sig.R().add(key.pub().mul(h));
+  return RplusAh.eq(SG);
+};
 
-  var expanded = extractChunks(scriptType, chunks, script)
+EDDSA.prototype.hashInt = function hashInt() {
+  var hash = this.hash();
+  for (var i = 0; i < arguments.length; i++)
+    hash.update(arguments[i]);
+  return utils.intFromLE(hash.digest()).umod(this.curve.n);
+};
 
-  var result = {
-    pubKeys: expanded.pubKeys,
-    signatures: expanded.signatures,
-    prevOutScript: prevOutScript,
-    prevOutType: prevOutType,
-    signType: scriptType,
-    signScript: script,
-    witness: Boolean(witness)
-  }
+EDDSA.prototype.keyFromPublic = function keyFromPublic(pub) {
+  return KeyPair.fromPublic(this, pub);
+};
 
-  if (p2sh) {
-    result.redeemScript = redeemScript
-    result.redeemScriptType = redeemScriptType
-  }
+EDDSA.prototype.keyFromSecret = function keyFromSecret(secret) {
+  return KeyPair.fromSecret(this, secret);
+};
 
-  if (p2wsh) {
-    result.witnessScript = witnessScript
-    result.witnessScriptType = witnessScriptType
-  }
+EDDSA.prototype.makeSignature = function makeSignature(sig) {
+  if (sig instanceof Signature)
+    return sig;
+  return new Signature(this, sig);
+};
 
-  return result
-}
+/**
+* * https://tools.ietf.org/html/draft-josefsson-eddsa-ed25519-03#section-5.2
+*
+* EDDSA defines methods for encoding and decoding points and integers. These are
+* helper convenience methods, that pass along to utility functions implied
+* parameters.
+*
+*/
+EDDSA.prototype.encodePoint = function encodePoint(point) {
+  var enc = point.getY().toArray('le', this.encodingLength);
+  enc[this.encodingLength - 1] |= point.getX().isOdd() ? 0x80 : 0;
+  return enc;
+};
 
-// could be done in expandInput, but requires the original Transaction for hashForSignature
-function fixMultisigOrder (input, transaction, vin) {
-  if (input.redeemScriptType !== scriptTypes.MULTISIG || !input.redeemScript) return
-  if (input.pubKeys.length === input.signatures.length) return
+EDDSA.prototype.decodePoint = function decodePoint(bytes) {
+  bytes = utils.parseBytes(bytes);
 
-  var unmatched = input.signatures.concat()
+  var lastIx = bytes.length - 1;
+  var normed = bytes.slice(0, lastIx).concat(bytes[lastIx] & ~0x80);
+  var xIsOdd = (bytes[lastIx] & 0x80) !== 0;
 
-  input.signatures = input.pubKeys.map(function (pubKey) {
-    var keyPair = ECPair.fromPublicKeyBuffer(pubKey)
-    var match
+  var y = utils.intFromLE(normed);
+  return this.curve.pointFromY(y, xIsOdd);
+};
 
-    // check for a signature
-    unmatched.some(function (signature, i) {
-      // skip if undefined || OP_0
-      if (!signature) return false
+EDDSA.prototype.encodeInt = function encodeInt(num) {
+  return num.toArray('le', this.encodingLength);
+};
 
-      // TODO: avoid O(n) hashForSignature
-      var parsed = ECSignature.parseScriptSignature(signature)
-      var hash = transaction.hashForSignature(vin, input.redeemScript, parsed.hashType)
+EDDSA.prototype.decodeInt = function decodeInt(bytes) {
+  return utils.intFromLE(bytes);
+};
 
-      // skip if signature does not match pubKey
-      if (!keyPair.verify(hash, parsed.signature)) return false
+EDDSA.prototype.isPoint = function isPoint(val) {
+  return val instanceof this.pointClass;
+};
 
-      // remove matched signature from unmatched
-      unmatched[i] = undefined
-      match = signature
+},{"../../elliptic":97,"./key":108,"./signature":109,"hash.js":114}],108:[function(require,module,exports){
+'use strict';
 
-      return true
-    })
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
+var parseBytes = utils.parseBytes;
+var cachedProperty = utils.cachedProperty;
 
-    return match
-  })
+/**
+* @param {EDDSA} eddsa - instance
+* @param {Object} params - public/private key parameters
+*
+* @param {Array<Byte>} [params.secret] - secret seed bytes
+* @param {Point} [params.pub] - public key point (aka `A` in eddsa terms)
+* @param {Array<Byte>} [params.pub] - public key point encoded as bytes
+*
+*/
+function KeyPair(eddsa, params) {
+  this.eddsa = eddsa;
+  this._secret = parseBytes(params.secret);
+  if (eddsa.isPoint(params.pub))
+    this._pub = params.pub;
+  else
+    this._pubBytes = parseBytes(params.pub);
 }
 
-function expandOutput (script, scriptType, ourPubKey) {
-  typeforce(types.Buffer, script)
-
-  var scriptChunks = bscript.decompile(script)
-  if (!scriptType) {
-    scriptType = bscript.classifyOutput(script)
-  }
-
-  var pubKeys = []
-
-  switch (scriptType) {
-    // does our hash160(pubKey) match the output scripts?
-    case scriptTypes.P2PKH:
-      if (!ourPubKey) break
+KeyPair.fromPublic = function fromPublic(eddsa, pub) {
+  if (pub instanceof KeyPair)
+    return pub;
+  return new KeyPair(eddsa, { pub: pub });
+};
 
-      var pkh1 = scriptChunks[2]
-      var pkh2 = bcrypto.hash160(ourPubKey)
-      if (pkh1.equals(pkh2)) pubKeys = [ourPubKey]
-      break
+KeyPair.fromSecret = function fromSecret(eddsa, secret) {
+  if (secret instanceof KeyPair)
+    return secret;
+  return new KeyPair(eddsa, { secret: secret });
+};
 
-    // does our hash160(pubKey) match the output scripts?
-    case scriptTypes.P2WPKH:
-      if (!ourPubKey) break
+KeyPair.prototype.secret = function secret() {
+  return this._secret;
+};
 
-      var wpkh1 = scriptChunks[1]
-      var wpkh2 = bcrypto.hash160(ourPubKey)
-      if (wpkh1.equals(wpkh2)) pubKeys = [ourPubKey]
-      break
+cachedProperty(KeyPair, 'pubBytes', function pubBytes() {
+  return this.eddsa.encodePoint(this.pub());
+});
 
-    case scriptTypes.P2PK:
-      pubKeys = scriptChunks.slice(0, 1)
-      break
+cachedProperty(KeyPair, 'pub', function pub() {
+  if (this._pubBytes)
+    return this.eddsa.decodePoint(this._pubBytes);
+  return this.eddsa.g.mul(this.priv());
+});
 
-    case scriptTypes.MULTISIG:
-      pubKeys = scriptChunks.slice(1, -2)
-      break
+cachedProperty(KeyPair, 'privBytes', function privBytes() {
+  var eddsa = this.eddsa;
+  var hash = this.hash();
+  var lastIx = eddsa.encodingLength - 1;
 
-    default: return { scriptType: scriptType }
-  }
+  var a = hash.slice(0, eddsa.encodingLength);
+  a[0] &= 248;
+  a[lastIx] &= 127;
+  a[lastIx] |= 64;
 
-  return {
-    pubKeys: pubKeys,
-    scriptType: scriptType,
-    signatures: pubKeys.map(function () { return undefined })
-  }
-}
+  return a;
+});
 
-function checkP2shInput (input, redeemScriptHash) {
-  if (input.prevOutType) {
-    if (input.prevOutType !== scriptTypes.P2SH) throw new Error('PrevOutScript must be P2SH')
+cachedProperty(KeyPair, 'priv', function priv() {
+  return this.eddsa.decodeInt(this.privBytes());
+});
 
-    var prevOutScriptScriptHash = bscript.decompile(input.prevOutScript)[1]
-    if (!prevOutScriptScriptHash.equals(redeemScriptHash)) throw new Error('Inconsistent hash160(RedeemScript)')
-  }
-}
+cachedProperty(KeyPair, 'hash', function hash() {
+  return this.eddsa.hash().update(this.secret()).digest();
+});
 
-function checkP2WSHInput (input, witnessScriptHash) {
-  if (input.prevOutType) {
-    if (input.prevOutType !== scriptTypes.P2WSH) throw new Error('PrevOutScript must be P2WSH')
+cachedProperty(KeyPair, 'messagePrefix', function messagePrefix() {
+  return this.hash().slice(this.eddsa.encodingLength);
+});
 
-    var scriptHash = bscript.decompile(input.prevOutScript)[1]
-    if (!scriptHash.equals(witnessScriptHash)) throw new Error('Inconsistent sha25(WitnessScript)')
-  }
-}
+KeyPair.prototype.sign = function sign(message) {
+  assert(this._secret, 'KeyPair can only verify');
+  return this.eddsa.sign(message, this);
+};
 
-function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScript) {
-  var expanded
-  var prevOutType
-  var prevOutScript
+KeyPair.prototype.verify = function verify(message, sig) {
+  return this.eddsa.verify(message, sig, this);
+};
 
-  var p2sh = false
-  var p2shType
-  var redeemScriptHash
+KeyPair.prototype.getSecret = function getSecret(enc) {
+  assert(this._secret, 'KeyPair is public only');
+  return utils.encode(this.secret(), enc);
+};
 
-  var witness = false
-  var p2wsh = false
-  var witnessType
-  var witnessScriptHash
+KeyPair.prototype.getPublic = function getPublic(enc) {
+  return utils.encode(this.pubBytes(), enc);
+};
 
-  var signType
-  var signScript
+module.exports = KeyPair;
 
-  if (redeemScript && witnessScript) {
-    redeemScriptHash = bcrypto.hash160(redeemScript)
-    witnessScriptHash = bcrypto.sha256(witnessScript)
-    checkP2shInput(input, redeemScriptHash)
+},{"../../elliptic":97}],109:[function(require,module,exports){
+'use strict';
 
-    if (!redeemScript.equals(bscript.witnessScriptHash.output.encode(witnessScriptHash))) throw new Error('Witness script inconsistent with redeem script')
+var BN = require('bn.js');
+var elliptic = require('../../elliptic');
+var utils = elliptic.utils;
+var assert = utils.assert;
+var cachedProperty = utils.cachedProperty;
+var parseBytes = utils.parseBytes;
 
-    expanded = expandOutput(witnessScript, undefined, kpPubKey)
-    if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"')
-    prevOutType = bscript.types.P2SH
-    prevOutScript = bscript.scriptHash.output.encode(redeemScriptHash)
-    p2sh = witness = p2wsh = true
-    p2shType = bscript.types.P2WSH
-    signType = witnessType = expanded.scriptType
-    signScript = witnessScript
-  } else if (redeemScript) {
-    redeemScriptHash = bcrypto.hash160(redeemScript)
-    checkP2shInput(input, redeemScriptHash)
+/**
+* @param {EDDSA} eddsa - eddsa instance
+* @param {Array<Bytes>|Object} sig -
+* @param {Array<Bytes>|Point} [sig.R] - R point as Point or bytes
+* @param {Array<Bytes>|bn} [sig.S] - S scalar as bn or bytes
+* @param {Array<Bytes>} [sig.Rencoded] - R point encoded
+* @param {Array<Bytes>} [sig.Sencoded] - S scalar encoded
+*/
+function Signature(eddsa, sig) {
+  this.eddsa = eddsa;
 
-    expanded = expandOutput(redeemScript, undefined, kpPubKey)
-    if (!expanded.pubKeys) throw new Error('RedeemScript not supported "' + bscript.toASM(redeemScript) + '"')
+  if (typeof sig !== 'object')
+    sig = parseBytes(sig);
 
-    prevOutType = bscript.types.P2SH
-    prevOutScript = bscript.scriptHash.output.encode(redeemScriptHash)
-    p2sh = true
-    signType = p2shType = expanded.scriptType
-    signScript = redeemScript
-    witness = signType === bscript.types.P2WPKH
-  } else if (witnessScript) {
-    witnessScriptHash = bcrypto.sha256(witnessScript)
-    checkP2WSHInput(input, witnessScriptHash)
+  if (Array.isArray(sig)) {
+    sig = {
+      R: sig.slice(0, eddsa.encodingLength),
+      S: sig.slice(eddsa.encodingLength)
+    };
+  }
 
-    expanded = expandOutput(witnessScript, undefined, kpPubKey)
-    if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"')
+  assert(sig.R && sig.S, 'Signature without R or S');
 
-    prevOutType = bscript.types.P2WSH
-    prevOutScript = bscript.witnessScriptHash.output.encode(witnessScriptHash)
-    witness = p2wsh = true
-    signType = witnessType = expanded.scriptType
-    signScript = witnessScript
-  } else if (input.prevOutType) {
-    // embedded scripts are not possible without a redeemScript
-    if (input.prevOutType === scriptTypes.P2SH ||
-      input.prevOutType === scriptTypes.P2WSH) {
-      throw new Error('PrevOutScript is ' + input.prevOutType + ', requires redeemScript')
-    }
+  if (eddsa.isPoint(sig.R))
+    this._R = sig.R;
+  if (sig.S instanceof BN)
+    this._S = sig.S;
 
-    prevOutType = input.prevOutType
-    prevOutScript = input.prevOutScript
-    expanded = expandOutput(input.prevOutScript, input.prevOutType, kpPubKey)
-    if (!expanded.pubKeys) return
+  this._Rencoded = Array.isArray(sig.R) ? sig.R : sig.Rencoded;
+  this._Sencoded = Array.isArray(sig.S) ? sig.S : sig.Sencoded;
+}
 
-    witness = (input.prevOutType === scriptTypes.P2WPKH)
-    signType = prevOutType
-    signScript = prevOutScript
-  } else {
-    prevOutScript = bscript.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey))
-    expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey)
-    prevOutType = scriptTypes.P2PKH
-    witness = false
-    signType = prevOutType
-    signScript = prevOutScript
-  }
+cachedProperty(Signature, 'S', function S() {
+  return this.eddsa.decodeInt(this.Sencoded());
+});
 
-  if (witness && !types.Satoshi(witnessValue)) {
-    throw new Error('Input was witness but not given witness value')
-  }
+cachedProperty(Signature, 'R', function R() {
+  return this.eddsa.decodePoint(this.Rencoded());
+});
 
-  if (signType === scriptTypes.P2WPKH) {
-    signScript = bscript.pubKeyHash.output.encode(bscript.witnessPubKeyHash.output.decode(signScript))
-  }
+cachedProperty(Signature, 'Rencoded', function Rencoded() {
+  return this.eddsa.encodePoint(this.R());
+});
 
-  if (p2sh) {
-    input.redeemScript = redeemScript
-    input.redeemScriptType = p2shType
-  }
+cachedProperty(Signature, 'Sencoded', function Sencoded() {
+  return this.eddsa.encodeInt(this.S());
+});
 
-  if (p2wsh) {
-    input.witnessScript = witnessScript
-    input.witnessScriptType = witnessType
-  }
+Signature.prototype.toBytes = function toBytes() {
+  return this.Rencoded().concat(this.Sencoded());
+};
 
-  input.pubKeys = expanded.pubKeys
-  input.signatures = expanded.signatures
-  input.signScript = signScript
-  input.signType = signType
-  input.prevOutScript = prevOutScript
-  input.prevOutType = prevOutType
-  input.witness = witness
-}
+Signature.prototype.toHex = function toHex() {
+  return utils.encode(this.toBytes(), 'hex').toUpperCase();
+};
 
-function buildStack (type, signatures, pubKeys, allowIncomplete) {
-  if (type === scriptTypes.P2PKH) {
-    if (signatures.length === 1 && Buffer.isBuffer(signatures[0]) && pubKeys.length === 1) return bscript.pubKeyHash.input.encodeStack(signatures[0], pubKeys[0])
-  } else if (type === scriptTypes.P2PK) {
-    if (signatures.length === 1 && Buffer.isBuffer(signatures[0])) return bscript.pubKey.input.encodeStack(signatures[0])
-  } else if (type === scriptTypes.MULTISIG) {
-    if (signatures.length > 0) {
-      signatures = signatures.map(function (signature) {
-        return signature || ops.OP_0
-      })
-      if (!allowIncomplete) {
-        // remove blank signatures
-        signatures = signatures.filter(function (x) { return x !== ops.OP_0 })
-      }
+module.exports = Signature;
 
-      return bscript.multisig.input.encodeStack(signatures /* see if it's necessary first */)
-    }
-  } else {
-    throw new Error('Not yet supported')
+},{"../../elliptic":97,"bn.js":81}],110:[function(require,module,exports){
+module.exports = {
+  doubles: {
+    step: 4,
+    points: [
+      [
+        'e60fce93b59e9ec53011aabc21c23e97b2a31369b87a5ae9c44ee89e2a6dec0a',
+        'f7e3507399e595929db99f34f57937101296891e44d23f0be1f32cce69616821'
+      ],
+      [
+        '8282263212c609d9ea2a6e3e172de238d8c39cabd5ac1ca10646e23fd5f51508',
+        '11f8a8098557dfe45e8256e830b60ace62d613ac2f7b17bed31b6eaff6e26caf'
+      ],
+      [
+        '175e159f728b865a72f99cc6c6fc846de0b93833fd2222ed73fce5b551e5b739',
+        'd3506e0d9e3c79eba4ef97a51ff71f5eacb5955add24345c6efa6ffee9fed695'
+      ],
+      [
+        '363d90d447b00c9c99ceac05b6262ee053441c7e55552ffe526bad8f83ff4640',
+        '4e273adfc732221953b445397f3363145b9a89008199ecb62003c7f3bee9de9'
+      ],
+      [
+        '8b4b5f165df3c2be8c6244b5b745638843e4a781a15bcd1b69f79a55dffdf80c',
+        '4aad0a6f68d308b4b3fbd7813ab0da04f9e336546162ee56b3eff0c65fd4fd36'
+      ],
+      [
+        '723cbaa6e5db996d6bf771c00bd548c7b700dbffa6c0e77bcb6115925232fcda',
+        '96e867b5595cc498a921137488824d6e2660a0653779494801dc069d9eb39f5f'
+      ],
+      [
+        'eebfa4d493bebf98ba5feec812c2d3b50947961237a919839a533eca0e7dd7fa',
+        '5d9a8ca3970ef0f269ee7edaf178089d9ae4cdc3a711f712ddfd4fdae1de8999'
+      ],
+      [
+        '100f44da696e71672791d0a09b7bde459f1215a29b3c03bfefd7835b39a48db0',
+        'cdd9e13192a00b772ec8f3300c090666b7ff4a18ff5195ac0fbd5cd62bc65a09'
+      ],
+      [
+        'e1031be262c7ed1b1dc9227a4a04c017a77f8d4464f3b3852c8acde6e534fd2d',
+        '9d7061928940405e6bb6a4176597535af292dd419e1ced79a44f18f29456a00d'
+      ],
+      [
+        'feea6cae46d55b530ac2839f143bd7ec5cf8b266a41d6af52d5e688d9094696d',
+        'e57c6b6c97dce1bab06e4e12bf3ecd5c981c8957cc41442d3155debf18090088'
+      ],
+      [
+        'da67a91d91049cdcb367be4be6ffca3cfeed657d808583de33fa978bc1ec6cb1',
+        '9bacaa35481642bc41f463f7ec9780e5dec7adc508f740a17e9ea8e27a68be1d'
+      ],
+      [
+        '53904faa0b334cdda6e000935ef22151ec08d0f7bb11069f57545ccc1a37b7c0',
+        '5bc087d0bc80106d88c9eccac20d3c1c13999981e14434699dcb096b022771c8'
+      ],
+      [
+        '8e7bcd0bd35983a7719cca7764ca906779b53a043a9b8bcaeff959f43ad86047',
+        '10b7770b2a3da4b3940310420ca9514579e88e2e47fd68b3ea10047e8460372a'
+      ],
+      [
+        '385eed34c1cdff21e6d0818689b81bde71a7f4f18397e6690a841e1599c43862',
+        '283bebc3e8ea23f56701de19e9ebf4576b304eec2086dc8cc0458fe5542e5453'
+      ],
+      [
+        '6f9d9b803ecf191637c73a4413dfa180fddf84a5947fbc9c606ed86c3fac3a7',
+        '7c80c68e603059ba69b8e2a30e45c4d47ea4dd2f5c281002d86890603a842160'
+      ],
+      [
+        '3322d401243c4e2582a2147c104d6ecbf774d163db0f5e5313b7e0e742d0e6bd',
+        '56e70797e9664ef5bfb019bc4ddaf9b72805f63ea2873af624f3a2e96c28b2a0'
+      ],
+      [
+        '85672c7d2de0b7da2bd1770d89665868741b3f9af7643397721d74d28134ab83',
+        '7c481b9b5b43b2eb6374049bfa62c2e5e77f17fcc5298f44c8e3094f790313a6'
+      ],
+      [
+        '948bf809b1988a46b06c9f1919413b10f9226c60f668832ffd959af60c82a0a',
+        '53a562856dcb6646dc6b74c5d1c3418c6d4dff08c97cd2bed4cb7f88d8c8e589'
+      ],
+      [
+        '6260ce7f461801c34f067ce0f02873a8f1b0e44dfc69752accecd819f38fd8e8',
+        'bc2da82b6fa5b571a7f09049776a1ef7ecd292238051c198c1a84e95b2b4ae17'
+      ],
+      [
+        'e5037de0afc1d8d43d8348414bbf4103043ec8f575bfdc432953cc8d2037fa2d',
+        '4571534baa94d3b5f9f98d09fb990bddbd5f5b03ec481f10e0e5dc841d755bda'
+      ],
+      [
+        'e06372b0f4a207adf5ea905e8f1771b4e7e8dbd1c6a6c5b725866a0ae4fce725',
+        '7a908974bce18cfe12a27bb2ad5a488cd7484a7787104870b27034f94eee31dd'
+      ],
+      [
+        '213c7a715cd5d45358d0bbf9dc0ce02204b10bdde2a3f58540ad6908d0559754',
+        '4b6dad0b5ae462507013ad06245ba190bb4850f5f36a7eeddff2c27534b458f2'
+      ],
+      [
+        '4e7c272a7af4b34e8dbb9352a5419a87e2838c70adc62cddf0cc3a3b08fbd53c',
+        '17749c766c9d0b18e16fd09f6def681b530b9614bff7dd33e0b3941817dcaae6'
+      ],
+      [
+        'fea74e3dbe778b1b10f238ad61686aa5c76e3db2be43057632427e2840fb27b6',
+        '6e0568db9b0b13297cf674deccb6af93126b596b973f7b77701d3db7f23cb96f'
+      ],
+      [
+        '76e64113f677cf0e10a2570d599968d31544e179b760432952c02a4417bdde39',
+        'c90ddf8dee4e95cf577066d70681f0d35e2a33d2b56d2032b4b1752d1901ac01'
+      ],
+      [
+        'c738c56b03b2abe1e8281baa743f8f9a8f7cc643df26cbee3ab150242bcbb891',
+        '893fb578951ad2537f718f2eacbfbbbb82314eef7880cfe917e735d9699a84c3'
+      ],
+      [
+        'd895626548b65b81e264c7637c972877d1d72e5f3a925014372e9f6588f6c14b',
+        'febfaa38f2bc7eae728ec60818c340eb03428d632bb067e179363ed75d7d991f'
+      ],
+      [
+        'b8da94032a957518eb0f6433571e8761ceffc73693e84edd49150a564f676e03',
+        '2804dfa44805a1e4d7c99cc9762808b092cc584d95ff3b511488e4e74efdf6e7'
+      ],
+      [
+        'e80fea14441fb33a7d8adab9475d7fab2019effb5156a792f1a11778e3c0df5d',
+        'eed1de7f638e00771e89768ca3ca94472d155e80af322ea9fcb4291b6ac9ec78'
+      ],
+      [
+        'a301697bdfcd704313ba48e51d567543f2a182031efd6915ddc07bbcc4e16070',
+        '7370f91cfb67e4f5081809fa25d40f9b1735dbf7c0a11a130c0d1a041e177ea1'
+      ],
+      [
+        '90ad85b389d6b936463f9d0512678de208cc330b11307fffab7ac63e3fb04ed4',
+        'e507a3620a38261affdcbd9427222b839aefabe1582894d991d4d48cb6ef150'
+      ],
+      [
+        '8f68b9d2f63b5f339239c1ad981f162ee88c5678723ea3351b7b444c9ec4c0da',
+        '662a9f2dba063986de1d90c2b6be215dbbea2cfe95510bfdf23cbf79501fff82'
+      ],
+      [
+        'e4f3fb0176af85d65ff99ff9198c36091f48e86503681e3e6686fd5053231e11',
+        '1e63633ad0ef4f1c1661a6d0ea02b7286cc7e74ec951d1c9822c38576feb73bc'
+      ],
+      [
+        '8c00fa9b18ebf331eb961537a45a4266c7034f2f0d4e1d0716fb6eae20eae29e',
+        'efa47267fea521a1a9dc343a3736c974c2fadafa81e36c54e7d2a4c66702414b'
+      ],
+      [
+        'e7a26ce69dd4829f3e10cec0a9e98ed3143d084f308b92c0997fddfc60cb3e41',
+        '2a758e300fa7984b471b006a1aafbb18d0a6b2c0420e83e20e8a9421cf2cfd51'
+      ],
+      [
+        'b6459e0ee3662ec8d23540c223bcbdc571cbcb967d79424f3cf29eb3de6b80ef',
+        '67c876d06f3e06de1dadf16e5661db3c4b3ae6d48e35b2ff30bf0b61a71ba45'
+      ],
+      [
+        'd68a80c8280bb840793234aa118f06231d6f1fc67e73c5a5deda0f5b496943e8',
+        'db8ba9fff4b586d00c4b1f9177b0e28b5b0e7b8f7845295a294c84266b133120'
+      ],
+      [
+        '324aed7df65c804252dc0270907a30b09612aeb973449cea4095980fc28d3d5d',
+        '648a365774b61f2ff130c0c35aec1f4f19213b0c7e332843967224af96ab7c84'
+      ],
+      [
+        '4df9c14919cde61f6d51dfdbe5fee5dceec4143ba8d1ca888e8bd373fd054c96',
+        '35ec51092d8728050974c23a1d85d4b5d506cdc288490192ebac06cad10d5d'
+      ],
+      [
+        '9c3919a84a474870faed8a9c1cc66021523489054d7f0308cbfc99c8ac1f98cd',
+        'ddb84f0f4a4ddd57584f044bf260e641905326f76c64c8e6be7e5e03d4fc599d'
+      ],
+      [
+        '6057170b1dd12fdf8de05f281d8e06bb91e1493a8b91d4cc5a21382120a959e5',
+        '9a1af0b26a6a4807add9a2daf71df262465152bc3ee24c65e899be932385a2a8'
+      ],
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+      ],
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+        '74a1ad6b5f76e39db2dd249410eac7f99e74c59cb83d2d0ed5ff1543da7703e9',
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+      ],
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+        '712fcdd1b9053f09003a3481fa7762e9ffd7c8ef35a38509e2fbf2629008373'
+      ],
+      [
+        '176e26989a43c9cfeba4029c202538c28172e566e3c4fce7322857f3be327d66',
+        'ed8cc9d04b29eb877d270b4878dc43c19aefd31f4eee09ee7b47834c1fa4b1c3'
+      ],
+      [
+        '75d46efea3771e6e68abb89a13ad747ecf1892393dfc4f1b7004788c50374da8',
+        '9852390a99507679fd0b86fd2b39a868d7efc22151346e1a3ca4726586a6bed8'
+      ],
+      [
+        '809a20c67d64900ffb698c4c825f6d5f2310fb0451c869345b7319f645605721',
+        '9e994980d9917e22b76b061927fa04143d096ccc54963e6a5ebfa5f3f8e286c1'
+      ],
+      [
+        '1b38903a43f7f114ed4500b4eac7083fdefece1cf29c63528d563446f972c180',
+        '4036edc931a60ae889353f77fd53de4a2708b26b6f5da72ad3394119daf408f9'
+      ]
+    ]
   }
+};
 
-  if (!allowIncomplete) throw new Error('Not enough signatures provided')
-
-  return []
-}
+},{}],111:[function(require,module,exports){
+'use strict';
 
-function buildInput (input, allowIncomplete) {
-  var scriptType = input.prevOutType
-  var sig = []
-  var witness = []
-  if (SIGNABLE.indexOf(scriptType) !== -1) {
-    sig = buildStack(scriptType, input.signatures, input.pubKeys, allowIncomplete)
-  }
+var utils = exports;
+var BN = require('bn.js');
+var minAssert = require('minimalistic-assert');
+var minUtils = require('minimalistic-crypto-utils');
 
-  var p2sh = false
-  if (scriptType === bscript.types.P2SH) {
-    // We can remove this error later when we have a guarantee prepareInput
-    // rejects unsignable scripts - it MUST be signable at this point.
-    if (P2SH.indexOf(input.redeemScriptType) === -1) {
-      throw new Error('Impossible to sign this type')
-    }
-    p2sh = true
-    if (SIGNABLE.indexOf(input.redeemScriptType) !== -1) {
-      sig = buildStack(input.redeemScriptType, input.signatures, input.pubKeys, allowIncomplete)
-    }
-    // If it wasn't SIGNABLE, it's witness, defer to that
-    scriptType = input.redeemScriptType
-  }
+utils.assert = minAssert;
+utils.toArray = minUtils.toArray;
+utils.zero2 = minUtils.zero2;
+utils.toHex = minUtils.toHex;
+utils.encode = minUtils.encode;
 
-  if (scriptType === bscript.types.P2WPKH) {
-    // P2WPKH is a special case of P2PKH
-    witness = buildStack(bscript.types.P2PKH, input.signatures, input.pubKeys, allowIncomplete)
-  } else if (scriptType === bscript.types.P2WSH) {
-    // We can remove this check later
-    if (SIGNABLE.indexOf(input.witnessScriptType) !== -1) {
-      witness = buildStack(input.witnessScriptType, input.signatures, input.pubKeys, allowIncomplete)
-      witness.push(input.witnessScript)
+// Represent num in a w-NAF form
+function getNAF(num, w) {
+  var naf = [];
+  var ws = 1 << (w + 1);
+  var k = num.clone();
+  while (k.cmpn(1) >= 0) {
+    var z;
+    if (k.isOdd()) {
+      var mod = k.andln(ws - 1);
+      if (mod > (ws >> 1) - 1)
+        z = (ws >> 1) - mod;
+      else
+        z = mod;
+      k.isubn(z);
     } else {
-      // We can remove this error later when we have a guarantee prepareInput
-      // rejects unsignble scripts - it MUST be signable at this point.
-      throw new Error()
+      z = 0;
     }
+    naf.push(z);
 
-    scriptType = input.witnessScriptType
-  }
-
-  // append redeemScript if necessary
-  if (p2sh) {
-    sig.push(input.redeemScript)
-  }
-
-  return {
-    type: scriptType,
-    script: bscript.compile(sig),
-    witness: witness
-  }
-}
-
-function TransactionBuilder (network, maximumFeeRate) {
-  this.prevTxMap = {}
-  this.network = network || networks.bitcoin
-
-  // WARNING: This is __NOT__ to be relied on, its just another potential safety mechanism (safety in-depth)
-  this.maximumFeeRate = maximumFeeRate || 1000
-
-  this.inputs = []
-  this.tx = new Transaction()
-}
-
-TransactionBuilder.prototype.setLockTime = function (locktime) {
-  typeforce(types.UInt32, locktime)
-
-  // if any signatures exist, throw
-  if (this.inputs.some(function (input) {
-    if (!input.signatures) return false
-
-    return input.signatures.some(function (s) { return s })
-  })) {
-    throw new Error('No, this would invalidate signatures')
-  }
-
-  this.tx.locktime = locktime
-}
-
-TransactionBuilder.prototype.setVersion = function (version) {
-  typeforce(types.UInt32, version)
-
-  // XXX: this might eventually become more complex depending on what the versions represent
-  this.tx.version = version
-}
-
-TransactionBuilder.fromTransaction = function (transaction, network) {
-  var txb = new TransactionBuilder(network)
-
-  // Copy transaction fields
-  txb.setVersion(transaction.version)
-  txb.setLockTime(transaction.locktime)
-
-  // Copy outputs (done first to avoid signature invalidation)
-  transaction.outs.forEach(function (txOut) {
-    txb.addOutput(txOut.script, txOut.value)
-  })
-
-  // Copy inputs
-  transaction.ins.forEach(function (txIn) {
-    txb.__addInputUnsafe(txIn.hash, txIn.index, {
-      sequence: txIn.sequence,
-      script: txIn.script,
-      witness: txIn.witness
-    })
-  })
-
-  // fix some things not possible through the public API
-  txb.inputs.forEach(function (input, i) {
-    fixMultisigOrder(input, transaction, i)
-  })
-
-  return txb
-}
-
-TransactionBuilder.prototype.addInput = function (txHash, vout, sequence, prevOutScript) {
-  if (!this.__canModifyInputs()) {
-    throw new Error('No, this would invalidate signatures')
-  }
-
-  var value
-
-  // is it a hex string?
-  if (typeof txHash === 'string') {
-    // transaction hashs's are displayed in reverse order, un-reverse it
-    txHash = Buffer.from(txHash, 'hex').reverse()
-
-  // is it a Transaction object?
-  } else if (txHash instanceof Transaction) {
-    var txOut = txHash.outs[vout]
-    prevOutScript = txOut.script
-    value = txOut.value
-
-    txHash = txHash.getHash()
+    // Optimization, shift by word if possible
+    var shift = (k.cmpn(0) !== 0 && k.andln(ws - 1) === 0) ? (w + 1) : 1;
+    for (var i = 1; i < shift; i++)
+      naf.push(0);
+    k.iushrn(shift);
   }
 
-  return this.__addInputUnsafe(txHash, vout, {
-    sequence: sequence,
-    prevOutScript: prevOutScript,
-    value: value
-  })
+  return naf;
 }
+utils.getNAF = getNAF;
 
-TransactionBuilder.prototype.__addInputUnsafe = function (txHash, vout, options) {
-  if (Transaction.isCoinbaseHash(txHash)) {
-    throw new Error('coinbase inputs not supported')
-  }
-
-  var prevTxOut = txHash.toString('hex') + ':' + vout
-  if (this.prevTxMap[prevTxOut] !== undefined) throw new Error('Duplicate TxOut: ' + prevTxOut)
-
-  var input = {}
-
-  // derive what we can from the scriptSig
-  if (options.script !== undefined) {
-    input = expandInput(options.script, options.witness || [])
-  }
-
-  // if an input value was given, retain it
-  if (options.value !== undefined) {
-    input.value = options.value
-  }
-
-  // derive what we can from the previous transactions output script
-  if (!input.prevOutScript && options.prevOutScript) {
-    var prevOutType
-
-    if (!input.pubKeys && !input.signatures) {
-      var expanded = expandOutput(options.prevOutScript)
+// Represent k1, k2 in a Joint Sparse Form
+function getJSF(k1, k2) {
+  var jsf = [
+    [],
+    []
+  ];
 
-      if (expanded.pubKeys) {
-        input.pubKeys = expanded.pubKeys
-        input.signatures = expanded.signatures
-      }
+  k1 = k1.clone();
+  k2 = k2.clone();
+  var d1 = 0;
+  var d2 = 0;
+  while (k1.cmpn(-d1) > 0 || k2.cmpn(-d2) > 0) {
 
-      prevOutType = expanded.scriptType
+    // First phase
+    var m14 = (k1.andln(3) + d1) & 3;
+    var m24 = (k2.andln(3) + d2) & 3;
+    if (m14 === 3)
+      m14 = -1;
+    if (m24 === 3)
+      m24 = -1;
+    var u1;
+    if ((m14 & 1) === 0) {
+      u1 = 0;
+    } else {
+      var m8 = (k1.andln(7) + d1) & 7;
+      if ((m8 === 3 || m8 === 5) && m24 === 2)
+        u1 = -m14;
+      else
+        u1 = m14;
     }
+    jsf[0].push(u1);
 
-    input.prevOutScript = options.prevOutScript
-    input.prevOutType = prevOutType || bscript.classifyOutput(options.prevOutScript)
-  }
-
-  var vin = this.tx.addInput(txHash, vout, options.sequence, options.scriptSig)
-  this.inputs[vin] = input
-  this.prevTxMap[prevTxOut] = vin
-
-  return vin
-}
-
-TransactionBuilder.prototype.addOutput = function (scriptPubKey, value) {
-  if (!this.__canModifyOutputs()) {
-    throw new Error('No, this would invalidate signatures')
-  }
-
-  // Attempt to get a script if it's a base58 address string
-  if (typeof scriptPubKey === 'string') {
-    scriptPubKey = baddress.toOutputScript(scriptPubKey, this.network)
-  }
-
-  return this.tx.addOutput(scriptPubKey, value)
-}
-
-TransactionBuilder.prototype.build = function () {
-  return this.__build(false)
-}
-TransactionBuilder.prototype.buildIncomplete = function () {
-  return this.__build(true)
-}
-
-TransactionBuilder.prototype.__build = function (allowIncomplete) {
-  if (!allowIncomplete) {
-    if (!this.tx.ins.length) throw new Error('Transaction has no inputs')
-    if (!this.tx.outs.length) throw new Error('Transaction has no outputs')
-  }
-
-  var tx = this.tx.clone()
-  // Create script signatures from inputs
-  this.inputs.forEach(function (input, i) {
-    var scriptType = input.witnessScriptType || input.redeemScriptType || input.prevOutType
-    if (!scriptType && !allowIncomplete) throw new Error('Transaction is not complete')
-    var result = buildInput(input, allowIncomplete)
-
-    // skip if no result
-    if (!allowIncomplete) {
-      if (SIGNABLE.indexOf(result.type) === -1 && result.type !== bscript.types.P2WPKH) {
-        throw new Error(result.type + ' not supported')
-      }
+    var u2;
+    if ((m24 & 1) === 0) {
+      u2 = 0;
+    } else {
+      var m8 = (k2.andln(7) + d2) & 7;
+      if ((m8 === 3 || m8 === 5) && m14 === 2)
+        u2 = -m24;
+      else
+        u2 = m24;
     }
+    jsf[1].push(u2);
 
-    tx.setInputScript(i, result.script)
-    tx.setWitness(i, result.witness)
-  })
-
-  if (!allowIncomplete) {
-    // do not rely on this, its merely a last resort
-    if (this.__overMaximumFees(tx.byteLength())) {
-      throw new Error('Transaction has absurd fees')
-    }
+    // Second phase
+    if (2 * d1 === u1 + 1)
+      d1 = 1 - d1;
+    if (2 * d2 === u2 + 1)
+      d2 = 1 - d2;
+    k1.iushrn(1);
+    k2.iushrn(1);
   }
 
-  return tx
+  return jsf;
 }
+utils.getJSF = getJSF;
 
-function canSign (input) {
-  return input.prevOutScript !== undefined &&
-    input.signScript !== undefined &&
-    input.pubKeys !== undefined &&
-    input.signatures !== undefined &&
-    input.signatures.length === input.pubKeys.length &&
-    input.pubKeys.length > 0 &&
-    input.witness !== undefined
+function cachedProperty(obj, name, computer) {
+  var key = '_' + name;
+  obj.prototype[name] = function cachedProperty() {
+    return this[key] !== undefined ? this[key] :
+           this[key] = computer.call(this);
+  };
 }
+utils.cachedProperty = cachedProperty;
 
-TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashType, witnessValue, witnessScript) {
-  if (keyPair.network !== this.network) throw new Error('Inconsistent network')
-  if (!this.inputs[vin]) throw new Error('No input at index: ' + vin)
-  hashType = hashType || Transaction.SIGHASH_ALL
-
-  var input = this.inputs[vin]
-
-  // if redeemScript was previously provided, enforce consistency
-  if (input.redeemScript !== undefined &&
-      redeemScript &&
-      !input.redeemScript.equals(redeemScript)) {
-    throw new Error('Inconsistent redeemScript')
-  }
-
-  var kpPubKey = keyPair.getPublicKeyBuffer()
-  if (!canSign(input)) {
-    prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript)
-    if (!canSign(input)) throw Error(input.prevOutType + ' not supported')
-  }
-
-  // ready to sign
-  var signatureHash
-  if (input.witness) {
-    signatureHash = this.tx.hashForWitnessV0(vin, input.signScript, witnessValue, hashType)
-  } else {
-    signatureHash = this.tx.hashForSignature(vin, input.signScript, hashType)
-  }
-  // enforce in order signing of public keys
-  var signed = input.pubKeys.some(function (pubKey, i) {
-    if (!kpPubKey.equals(pubKey)) return false
-    if (input.signatures[i]) throw new Error('Signature already exists')
-
-    input.signatures[i] = keyPair.sign(signatureHash).toScriptSignature(hashType)
-    return true
-  })
-
-  if (!signed) throw new Error('Key pair cannot sign for this input')
+function parseBytes(bytes) {
+  return typeof bytes === 'string' ? utils.toArray(bytes, 'hex') :
+                                     bytes;
 }
+utils.parseBytes = parseBytes;
 
-function signatureHashType (buffer) {
-  return buffer.readUInt8(buffer.length - 1)
+function intFromLE(bytes) {
+  return new BN(bytes, 'hex', 'le');
 }
+utils.intFromLE = intFromLE;
 
-TransactionBuilder.prototype.__canModifyInputs = function () {
-  return this.inputs.every(function (input) {
-    // any signatures?
-    if (input.signatures === undefined) return true
-
-    return input.signatures.every(function (signature) {
-      if (!signature) return true
-      var hashType = signatureHashType(signature)
 
-      // if SIGHASH_ANYONECANPAY is set, signatures would not
-      // be invalidated by more inputs
-      return hashType & Transaction.SIGHASH_ANYONECANPAY
-    })
-  })
+},{"bn.js":81,"minimalistic-assert":123,"minimalistic-crypto-utils":124}],112:[function(require,module,exports){
+module.exports={
+  "_args": [
+    [
+      "elliptic",
+      "/home/ian/git/bitcoin/bitcoinjs-lib-browser"
+    ]
+  ],
+  "_from": "elliptic@latest",
+  "_id": "elliptic@6.4.0",
+  "_inCache": true,
+  "_installable": true,
+  "_location": "/elliptic",
+  "_nodeVersion": "7.0.0",
+  "_npmOperationalInternal": {
+    "host": "packages-18-east.internal.npmjs.com",
+    "tmp": "tmp/elliptic-6.4.0.tgz_1487798866428_0.30510620190761983"
+  },
+  "_npmUser": {
+    "email": "fedor@indutny.com",
+    "name": "indutny"
+  },
+  "_npmVersion": "3.10.8",
+  "_phantomChildren": {},
+  "_requested": {
+    "name": "elliptic",
+    "raw": "elliptic",
+    "rawSpec": "",
+    "scope": null,
+    "spec": "latest",
+    "type": "tag"
+  },
+  "_requiredBy": [
+    "#USER"
+  ],
+  "_resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz",
+  "_shasum": "cac9af8762c85836187003c8dfe193e5e2eae5df",
+  "_shrinkwrap": null,
+  "_spec": "elliptic",
+  "_where": "/home/ian/git/bitcoin/bitcoinjs-lib-browser",
+  "author": {
+    "email": "fedor@indutny.com",
+    "name": "Fedor Indutny"
+  },
+  "bugs": {
+    "url": "https://github.com/indutny/elliptic/issues"
+  },
+  "dependencies": {
+    "bn.js": "^4.4.0",
+    "brorand": "^1.0.1",
+    "hash.js": "^1.0.0",
+    "hmac-drbg": "^1.0.0",
+    "inherits": "^2.0.1",
+    "minimalistic-assert": "^1.0.0",
+    "minimalistic-crypto-utils": "^1.0.0"
+  },
+  "description": "EC cryptography",
+  "devDependencies": {
+    "brfs": "^1.4.3",
+    "coveralls": "^2.11.3",
+    "grunt": "^0.4.5",
+    "grunt-browserify": "^5.0.0",
+    "grunt-cli": "^1.2.0",
+    "grunt-contrib-connect": "^1.0.0",
+    "grunt-contrib-copy": "^1.0.0",
+    "grunt-contrib-uglify": "^1.0.1",
+    "grunt-mocha-istanbul": "^3.0.1",
+    "grunt-saucelabs": "^8.6.2",
+    "istanbul": "^0.4.2",
+    "jscs": "^2.9.0",
+    "jshint": "^2.6.0",
+    "mocha": "^2.1.0"
+  },
+  "directories": {},
+  "dist": {
+    "shasum": "cac9af8762c85836187003c8dfe193e5e2eae5df",
+    "tarball": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.0.tgz"
+  },
+  "files": [
+    "lib"
+  ],
+  "gitHead": "6b0d2b76caae91471649c8e21f0b1d3ba0f96090",
+  "homepage": "https://github.com/indutny/elliptic",
+  "keywords": [
+    "EC",
+    "Elliptic",
+    "curve",
+    "Cryptography"
+  ],
+  "license": "MIT",
+  "main": "lib/elliptic.js",
+  "maintainers": [
+    {
+      "email": "fedor@indutny.com",
+      "name": "indutny"
+    }
+  ],
+  "name": "elliptic",
+  "optionalDependencies": {},
+  "readme": "ERROR: No README data found!",
+  "repository": {
+    "type": "git",
+    "url": "git+ssh://git@github.com/indutny/elliptic.git"
+  },
+  "scripts": {
+    "jscs": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
+    "jshint": "jscs benchmarks/*.js lib/*.js lib/**/*.js lib/**/**/*.js test/index.js",
+    "lint": "npm run jscs && npm run jshint",
+    "test": "npm run lint && npm run unit",
+    "unit": "istanbul test _mocha --reporter=spec test/index.js",
+    "version": "grunt dist && git add dist/"
+  },
+  "version": "6.4.0"
 }
 
-TransactionBuilder.prototype.__canModifyOutputs = function () {
-  var nInputs = this.tx.ins.length
-  var nOutputs = this.tx.outs.length
+},{}],113:[function(require,module,exports){
+(function (Buffer){
+'use strict'
+var Transform = require('stream').Transform
+var inherits = require('inherits')
 
-  return this.inputs.every(function (input) {
-    if (input.signatures === undefined) return true
+function HashBase (blockSize) {
+  Transform.call(this)
 
-    return input.signatures.every(function (signature) {
-      if (!signature) return true
-      var hashType = signatureHashType(signature)
+  this._block = new Buffer(blockSize)
+  this._blockSize = blockSize
+  this._blockOffset = 0
+  this._length = [0, 0, 0, 0]
 
-      var hashTypeMod = hashType & 0x1f
-      if (hashTypeMod === Transaction.SIGHASH_NONE) return true
-      if (hashTypeMod === Transaction.SIGHASH_SINGLE) {
-        // if SIGHASH_SINGLE is set, and nInputs > nOutputs
-        // some signatures would be invalidated by the addition
-        // of more outputs
-        return nInputs <= nOutputs
-      }
-    })
-  })
+  this._finalized = false
 }
 
-TransactionBuilder.prototype.__overMaximumFees = function (bytes) {
-  // not all inputs will have .value defined
-  var incoming = this.inputs.reduce(function (a, x) { return a + (x.value >>> 0) }, 0)
+inherits(HashBase, Transform)
 
-  // but all outputs do, and if we have any input value
-  // we can immediately determine if the outputs are too small
-  var outgoing = this.tx.outs.reduce(function (a, x) { return a + x.value }, 0)
-  var fee = incoming - outgoing
-  var feeRate = fee / bytes
+HashBase.prototype._transform = function (chunk, encoding, callback) {
+  var error = null
+  try {
+    if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding)
+    this.update(chunk)
+  } catch (err) {
+    error = err
+  }
 
-  return feeRate > this.maximumFeeRate
+  callback(error)
 }
 
-module.exports = TransactionBuilder
-
-},{"./address":42,"./crypto":45,"./ecpair":47,"./ecsignature":48,"./networks":51,"./script":52,"./transaction":76,"./types":78,"bitcoin-ops":40,"safe-buffer":98,"typeforce":109}],78:[function(require,module,exports){
-var typeforce = require('typeforce')
-
-var UINT31_MAX = Math.pow(2, 31) - 1
-function UInt31 (value) {
-  return typeforce.UInt32(value) && value <= UINT31_MAX
-}
+HashBase.prototype._flush = function (callback) {
+  var error = null
+  try {
+    this.push(this._digest())
+  } catch (err) {
+    error = err
+  }
 
-function BIP32Path (value) {
-  return typeforce.String(value) && value.match(/^(m\/)?(\d+'?\/)*\d+'?$/)
+  callback(error)
 }
-BIP32Path.toJSON = function () { return 'BIP32 derivation path' }
 
-var SATOSHI_MAX = 21 * 1e14
-function Satoshi (value) {
-  return typeforce.UInt53(value) && value <= SATOSHI_MAX
-}
+HashBase.prototype.update = function (data, encoding) {
+  if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
+  if (this._finalized) throw new Error('Digest already called')
+  if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary')
 
-// external dependent types
-var BigInt = typeforce.quacksLike('BigInteger')
-var ECPoint = typeforce.quacksLike('Point')
+  // consume data
+  var block = this._block
+  var offset = 0
+  while (this._blockOffset + data.length - offset >= this._blockSize) {
+    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
+    this._update()
+    this._blockOffset = 0
+  }
+  while (offset < data.length) block[this._blockOffset++] = data[offset++]
 
-// exposed, external API
-var ECSignature = typeforce.compile({ r: BigInt, s: BigInt })
-var Network = typeforce.compile({
-  messagePrefix: typeforce.oneOf(typeforce.Buffer, typeforce.String),
-  bip32: {
-    public: typeforce.UInt32,
-    private: typeforce.UInt32
-  },
-  pubKeyHash: typeforce.UInt8,
-  scriptHash: typeforce.UInt8,
-  wif: typeforce.UInt8
-})
+  // update length
+  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
+    this._length[j] += carry
+    carry = (this._length[j] / 0x0100000000) | 0
+    if (carry > 0) this._length[j] -= 0x0100000000 * carry
+  }
 
-// extend typeforce types with ours
-var types = {
-  BigInt: BigInt,
-  BIP32Path: BIP32Path,
-  Buffer256bit: typeforce.BufferN(32),
-  ECPoint: ECPoint,
-  ECSignature: ECSignature,
-  Hash160bit: typeforce.BufferN(20),
-  Hash256bit: typeforce.BufferN(32),
-  Network: Network,
-  Satoshi: Satoshi,
-  UInt31: UInt31
+  return this
 }
 
-for (var typeName in typeforce) {
-  types[typeName] = typeforce[typeName]
+HashBase.prototype._update = function (data) {
+  throw new Error('_update is not implemented')
 }
 
-module.exports = types
-
-},{"typeforce":109}],79:[function(require,module,exports){
-var basex = require('base-x')
-var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
-
-module.exports = basex(ALPHABET)
-
-},{"base-x":34}],80:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-
-var base58 = require('bs58')
-var createHash = require('create-hash')
+HashBase.prototype.digest = function (encoding) {
+  if (this._finalized) throw new Error('Digest already called')
+  this._finalized = true
 
-// SHA256(SHA256(buffer))
-function sha256x2 (buffer) {
-  var tmp = createHash('sha256').update(buffer).digest()
-  return createHash('sha256').update(tmp).digest()
+  var digest = this._digest()
+  if (encoding !== undefined) digest = digest.toString(encoding)
+  return digest
 }
 
-// Encode a buffer as a base58-check encoded string
-function encode (payload) {
-  var checksum = sha256x2(payload)
-
-  return base58.encode(Buffer.concat([
-    payload,
-    checksum
-  ], payload.length + 4))
+HashBase.prototype._digest = function () {
+  throw new Error('_digest is not implemented')
 }
 
-function decodeRaw (buffer) {
-  var payload = buffer.slice(0, -4)
-  var checksum = buffer.slice(-4)
-  var newChecksum = sha256x2(payload)
+module.exports = HashBase
 
-  if (checksum[0] ^ newChecksum[0] |
-      checksum[1] ^ newChecksum[1] |
-      checksum[2] ^ newChecksum[2] |
-      checksum[3] ^ newChecksum[3]) return
+}).call(this,require("buffer").Buffer)
+},{"buffer":5,"inherits":121,"stream":28}],114:[function(require,module,exports){
+var hash = exports;
 
-  return payload
-}
+hash.utils = require('./hash/utils');
+hash.common = require('./hash/common');
+hash.sha = require('./hash/sha');
+hash.ripemd = require('./hash/ripemd');
+hash.hmac = require('./hash/hmac');
 
-// Decode a base58-check encoded string to a buffer, no result if checksum is wrong
-function decodeUnsafe (string) {
-  var buffer = base58.decodeUnsafe(string)
-  if (!buffer) return
+// Proxy hash functions to the main object
+hash.sha1 = hash.sha.sha1;
+hash.sha256 = hash.sha.sha256;
+hash.sha224 = hash.sha.sha224;
+hash.sha384 = hash.sha.sha384;
+hash.sha512 = hash.sha.sha512;
+hash.ripemd160 = hash.ripemd.ripemd160;
 
-  return decodeRaw(buffer)
-}
+},{"./hash/common":115,"./hash/hmac":116,"./hash/ripemd":117,"./hash/sha":118,"./hash/utils":119}],115:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
 
-function decode (string) {
-  var buffer = base58.decode(string)
-  var payload = decodeRaw(buffer)
-  if (!payload) throw new Error('Invalid checksum')
-  return payload
-}
+function BlockHash() {
+  this.pending = null;
+  this.pendingTotal = 0;
+  this.blockSize = this.constructor.blockSize;
+  this.outSize = this.constructor.outSize;
+  this.hmacStrength = this.constructor.hmacStrength;
+  this.padLength = this.constructor.padLength / 8;
+  this.endian = 'big';
 
-module.exports = {
-  encode: encode,
-  decode: decode,
-  decodeUnsafe: decodeUnsafe
+  this._delta8 = this.blockSize / 8;
+  this._delta32 = this.blockSize / 32;
 }
+exports.BlockHash = BlockHash;
 
-}).call(this,require("buffer").Buffer)
-},{"bs58":79,"buffer":4,"create-hash":82}],81:[function(require,module,exports){
-var Buffer = require('safe-buffer').Buffer
-var Transform = require('stream').Transform
-var StringDecoder = require('string_decoder').StringDecoder
-var inherits = require('inherits')
-
-function CipherBase (hashMode) {
-  Transform.call(this)
-  this.hashMode = typeof hashMode === 'string'
-  if (this.hashMode) {
-    this[hashMode] = this._finalOrDigest
-  } else {
-    this.final = this._finalOrDigest
-  }
-  if (this._final) {
-    this.__final = this._final
-    this._final = null
-  }
-  this._decoder = null
-  this._encoding = null
-}
-inherits(CipherBase, Transform)
+BlockHash.prototype.update = function update(msg, enc) {
+  // Convert message to array, pad it, and join into 32bit blocks
+  msg = utils.toArray(msg, enc);
+  if (!this.pending)
+    this.pending = msg;
+  else
+    this.pending = this.pending.concat(msg);
+  this.pendingTotal += msg.length;
 
-CipherBase.prototype.update = function (data, inputEnc, outputEnc) {
-  if (typeof data === 'string') {
-    data = Buffer.from(data, inputEnc)
-  }
+  // Enough data, try updating
+  if (this.pending.length >= this._delta8) {
+    msg = this.pending;
 
-  var outData = this._update(data)
-  if (this.hashMode) return this
+    // Process pending data in blocks
+    var r = msg.length % this._delta8;
+    this.pending = msg.slice(msg.length - r, msg.length);
+    if (this.pending.length === 0)
+      this.pending = null;
 
-  if (outputEnc) {
-    outData = this._toString(outData, outputEnc)
+    msg = utils.join32(msg, 0, msg.length - r, this.endian);
+    for (var i = 0; i < msg.length; i += this._delta32)
+      this._update(msg, i, i + this._delta32);
   }
 
-  return outData
-}
-
-CipherBase.prototype.setAutoPadding = function () {}
-CipherBase.prototype.getAuthTag = function () {
-  throw new Error('trying to get auth tag in unsupported state')
-}
-
-CipherBase.prototype.setAuthTag = function () {
-  throw new Error('trying to set auth tag in unsupported state')
-}
+  return this;
+};
 
-CipherBase.prototype.setAAD = function () {
-  throw new Error('trying to set aad in unsupported state')
-}
+BlockHash.prototype.digest = function digest(enc) {
+  this.update(this._pad());
+  assert(this.pending === null);
 
-CipherBase.prototype._transform = function (data, _, next) {
-  var err
-  try {
-    if (this.hashMode) {
-      this._update(data)
-    } else {
-      this.push(this._update(data))
-    }
-  } catch (e) {
-    err = e
-  } finally {
-    next(err)
-  }
-}
-CipherBase.prototype._flush = function (done) {
-  var err
-  try {
-    this.push(this.__final())
-  } catch (e) {
-    err = e
-  }
+  return this._digest(enc);
+};
 
-  done(err)
-}
-CipherBase.prototype._finalOrDigest = function (outputEnc) {
-  var outData = this.__final() || Buffer.alloc(0)
-  if (outputEnc) {
-    outData = this._toString(outData, outputEnc, true)
-  }
-  return outData
-}
+BlockHash.prototype._pad = function pad() {
+  var len = this.pendingTotal;
+  var bytes = this._delta8;
+  var k = bytes - ((len + this.padLength) % bytes);
+  var res = new Array(k + this.padLength);
+  res[0] = 0x80;
+  for (var i = 1; i < k; i++)
+    res[i] = 0;
 
-CipherBase.prototype._toString = function (value, enc, fin) {
-  if (!this._decoder) {
-    this._decoder = new StringDecoder(enc)
-    this._encoding = enc
-  }
+  // Append length
+  len <<= 3;
+  if (this.endian === 'big') {
+    for (var t = 8; t < this.padLength; t++)
+      res[i++] = 0;
 
-  if (this._encoding !== enc) throw new Error('can\'t switch encodings')
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = (len >>> 24) & 0xff;
+    res[i++] = (len >>> 16) & 0xff;
+    res[i++] = (len >>> 8) & 0xff;
+    res[i++] = len & 0xff;
+  } else {
+    res[i++] = len & 0xff;
+    res[i++] = (len >>> 8) & 0xff;
+    res[i++] = (len >>> 16) & 0xff;
+    res[i++] = (len >>> 24) & 0xff;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
+    res[i++] = 0;
 
-  var out = this._decoder.write(value)
-  if (fin) {
-    out += this._decoder.end()
+    for (var t = 8; t < this.padLength; t++)
+      res[i++] = 0;
   }
 
-  return out
-}
-
-module.exports = CipherBase
+  return res;
+};
 
-},{"inherits":93,"safe-buffer":98,"stream":27,"string_decoder":28}],82:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var inherits = require('inherits')
-var md5 = require('./md5')
-var RIPEMD160 = require('ripemd160')
-var sha = require('sha.js')
+},{"../hash":114}],116:[function(require,module,exports){
+var hmac = exports;
 
-var Base = require('cipher-base')
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
 
-function HashNoConstructor (hash) {
-  Base.call(this, 'digest')
+function Hmac(hash, key, enc) {
+  if (!(this instanceof Hmac))
+    return new Hmac(hash, key, enc);
+  this.Hash = hash;
+  this.blockSize = hash.blockSize / 8;
+  this.outSize = hash.outSize / 8;
+  this.inner = null;
+  this.outer = null;
 
-  this._hash = hash
-  this.buffers = []
+  this._init(utils.toArray(key, enc));
 }
+module.exports = Hmac;
 
-inherits(HashNoConstructor, Base)
+Hmac.prototype._init = function init(key) {
+  // Shorten key, if needed
+  if (key.length > this.blockSize)
+    key = new this.Hash().update(key).digest();
+  assert(key.length <= this.blockSize);
 
-HashNoConstructor.prototype._update = function (data) {
-  this.buffers.push(data)
-}
+  // Add padding to key
+  for (var i = key.length; i < this.blockSize; i++)
+    key.push(0);
 
-HashNoConstructor.prototype._final = function () {
-  var buf = Buffer.concat(this.buffers)
-  var r = this._hash(buf)
-  this.buffers = null
+  for (var i = 0; i < key.length; i++)
+    key[i] ^= 0x36;
+  this.inner = new this.Hash().update(key);
 
-  return r
-}
+  // 0x36 ^ 0x5c = 0x6a
+  for (var i = 0; i < key.length; i++)
+    key[i] ^= 0x6a;
+  this.outer = new this.Hash().update(key);
+};
 
-function Hash (hash) {
-  Base.call(this, 'digest')
+Hmac.prototype.update = function update(msg, enc) {
+  this.inner.update(msg, enc);
+  return this;
+};
 
-  this._hash = hash
-}
+Hmac.prototype.digest = function digest(enc) {
+  this.outer.update(this.inner.digest());
+  return this.outer.digest(enc);
+};
 
-inherits(Hash, Base)
+},{"../hash":114}],117:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
 
-Hash.prototype._update = function (data) {
-  this._hash.update(data)
-}
+var rotl32 = utils.rotl32;
+var sum32 = utils.sum32;
+var sum32_3 = utils.sum32_3;
+var sum32_4 = utils.sum32_4;
+var BlockHash = hash.common.BlockHash;
 
-Hash.prototype._final = function () {
-  return this._hash.digest()
-}
+function RIPEMD160() {
+  if (!(this instanceof RIPEMD160))
+    return new RIPEMD160();
 
-module.exports = function createHash (alg) {
-  alg = alg.toLowerCase()
-  if (alg === 'md5') return new HashNoConstructor(md5)
-  if (alg === 'rmd160' || alg === 'ripemd160') return new Hash(new RIPEMD160())
+  BlockHash.call(this);
 
-  return new Hash(sha(alg))
+  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476, 0xc3d2e1f0 ];
+  this.endian = 'little';
 }
+utils.inherits(RIPEMD160, BlockHash);
+exports.ripemd160 = RIPEMD160;
 
-}).call(this,require("buffer").Buffer)
-},{"./md5":84,"buffer":4,"cipher-base":81,"inherits":93,"ripemd160":97,"sha.js":100}],83:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var intSize = 4
-var zeroBuffer = new Buffer(intSize)
-zeroBuffer.fill(0)
-
-var charSize = 8
-var hashSize = 16
+RIPEMD160.blockSize = 512;
+RIPEMD160.outSize = 160;
+RIPEMD160.hmacStrength = 192;
+RIPEMD160.padLength = 64;
 
-function toArray (buf) {
-  if ((buf.length % intSize) !== 0) {
-    var len = buf.length + (intSize - (buf.length % intSize))
-    buf = Buffer.concat([buf, zeroBuffer], len)
+RIPEMD160.prototype._update = function update(msg, start) {
+  var A = this.h[0];
+  var B = this.h[1];
+  var C = this.h[2];
+  var D = this.h[3];
+  var E = this.h[4];
+  var Ah = A;
+  var Bh = B;
+  var Ch = C;
+  var Dh = D;
+  var Eh = E;
+  for (var j = 0; j < 80; j++) {
+    var T = sum32(
+      rotl32(
+        sum32_4(A, f(j, B, C, D), msg[r[j] + start], K(j)),
+        s[j]),
+      E);
+    A = E;
+    E = D;
+    D = rotl32(C, 10);
+    C = B;
+    B = T;
+    T = sum32(
+      rotl32(
+        sum32_4(Ah, f(79 - j, Bh, Ch, Dh), msg[rh[j] + start], Kh(j)),
+        sh[j]),
+      Eh);
+    Ah = Eh;
+    Eh = Dh;
+    Dh = rotl32(Ch, 10);
+    Ch = Bh;
+    Bh = T;
   }
+  T = sum32_3(this.h[1], C, Dh);
+  this.h[1] = sum32_3(this.h[2], D, Eh);
+  this.h[2] = sum32_3(this.h[3], E, Ah);
+  this.h[3] = sum32_3(this.h[4], A, Bh);
+  this.h[4] = sum32_3(this.h[0], B, Ch);
+  this.h[0] = T;
+};
 
-  var arr = new Array(buf.length >>> 2)
-  for (var i = 0, j = 0; i < buf.length; i += intSize, j++) {
-    arr[j] = buf.readInt32LE(i)
-  }
+RIPEMD160.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'little');
+  else
+    return utils.split32(this.h, 'little');
+};
 
-  return arr
+function f(j, x, y, z) {
+  if (j <= 15)
+    return x ^ y ^ z;
+  else if (j <= 31)
+    return (x & y) | ((~x) & z);
+  else if (j <= 47)
+    return (x | (~y)) ^ z;
+  else if (j <= 63)
+    return (x & z) | (y & (~z));
+  else
+    return x ^ (y | (~z));
 }
 
-module.exports = function hash (buf, fn) {
-  var arr = fn(toArray(buf), buf.length * charSize)
-  buf = new Buffer(hashSize)
-  for (var i = 0; i < arr.length; i++) {
-    buf.writeInt32LE(arr[i], i << 2, true)
-  }
-  return buf
+function K(j) {
+  if (j <= 15)
+    return 0x00000000;
+  else if (j <= 31)
+    return 0x5a827999;
+  else if (j <= 47)
+    return 0x6ed9eba1;
+  else if (j <= 63)
+    return 0x8f1bbcdc;
+  else
+    return 0xa953fd4e;
 }
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":4}],84:[function(require,module,exports){
-'use strict'
-/*
- * A JavaScript implementation of the RSA Data Security, Inc. MD5 Message
- * Digest Algorithm, as defined in RFC 1321.
- * Version 2.1 Copyright (C) Paul Johnston 1999 - 2002.
- * Other contributors: Greg Holt, Andrew Kepert, Ydnar, Lostinet
- * Distributed under the BSD License
- * See http://pajhome.org.uk/crypt/md5 for more info.
- */
-
-var makeHash = require('./make-hash')
-
-/*
- * Calculate the MD5 of an array of little-endian words, and a bit length
- */
-function core_md5 (x, len) {
-  /* append padding */
-  x[len >> 5] |= 0x80 << ((len) % 32)
-  x[(((len + 64) >>> 9) << 4) + 14] = len
+function Kh(j) {
+  if (j <= 15)
+    return 0x50a28be6;
+  else if (j <= 31)
+    return 0x5c4dd124;
+  else if (j <= 47)
+    return 0x6d703ef3;
+  else if (j <= 63)
+    return 0x7a6d76e9;
+  else
+    return 0x00000000;
+}
 
-  var a = 1732584193
-  var b = -271733879
-  var c = -1732584194
-  var d = 271733878
+var r = [
+  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+  7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
+  3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
+  1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
+  4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13
+];
 
-  for (var i = 0; i < x.length; i += 16) {
-    var olda = a
-    var oldb = b
-    var oldc = c
-    var oldd = d
+var rh = [
+  5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
+  6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
+  15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
+  8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
+  12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11
+];
 
-    a = md5_ff(a, b, c, d, x[i + 0], 7, -680876936)
-    d = md5_ff(d, a, b, c, x[i + 1], 12, -389564586)
-    c = md5_ff(c, d, a, b, x[i + 2], 17, 606105819)
-    b = md5_ff(b, c, d, a, x[i + 3], 22, -1044525330)
-    a = md5_ff(a, b, c, d, x[i + 4], 7, -176418897)
-    d = md5_ff(d, a, b, c, x[i + 5], 12, 1200080426)
-    c = md5_ff(c, d, a, b, x[i + 6], 17, -1473231341)
-    b = md5_ff(b, c, d, a, x[i + 7], 22, -45705983)
-    a = md5_ff(a, b, c, d, x[i + 8], 7, 1770035416)
-    d = md5_ff(d, a, b, c, x[i + 9], 12, -1958414417)
-    c = md5_ff(c, d, a, b, x[i + 10], 17, -42063)
-    b = md5_ff(b, c, d, a, x[i + 11], 22, -1990404162)
-    a = md5_ff(a, b, c, d, x[i + 12], 7, 1804603682)
-    d = md5_ff(d, a, b, c, x[i + 13], 12, -40341101)
-    c = md5_ff(c, d, a, b, x[i + 14], 17, -1502002290)
-    b = md5_ff(b, c, d, a, x[i + 15], 22, 1236535329)
+var s = [
+  11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
+  7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
+  11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
+  11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
+  9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6
+];
 
-    a = md5_gg(a, b, c, d, x[i + 1], 5, -165796510)
-    d = md5_gg(d, a, b, c, x[i + 6], 9, -1069501632)
-    c = md5_gg(c, d, a, b, x[i + 11], 14, 643717713)
-    b = md5_gg(b, c, d, a, x[i + 0], 20, -373897302)
-    a = md5_gg(a, b, c, d, x[i + 5], 5, -701558691)
-    d = md5_gg(d, a, b, c, x[i + 10], 9, 38016083)
-    c = md5_gg(c, d, a, b, x[i + 15], 14, -660478335)
-    b = md5_gg(b, c, d, a, x[i + 4], 20, -405537848)
-    a = md5_gg(a, b, c, d, x[i + 9], 5, 568446438)
-    d = md5_gg(d, a, b, c, x[i + 14], 9, -1019803690)
-    c = md5_gg(c, d, a, b, x[i + 3], 14, -187363961)
-    b = md5_gg(b, c, d, a, x[i + 8], 20, 1163531501)
-    a = md5_gg(a, b, c, d, x[i + 13], 5, -1444681467)
-    d = md5_gg(d, a, b, c, x[i + 2], 9, -51403784)
-    c = md5_gg(c, d, a, b, x[i + 7], 14, 1735328473)
-    b = md5_gg(b, c, d, a, x[i + 12], 20, -1926607734)
+var sh = [
+  8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
+  9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
+  9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
+  15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
+  8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11
+];
 
-    a = md5_hh(a, b, c, d, x[i + 5], 4, -378558)
-    d = md5_hh(d, a, b, c, x[i + 8], 11, -2022574463)
-    c = md5_hh(c, d, a, b, x[i + 11], 16, 1839030562)
-    b = md5_hh(b, c, d, a, x[i + 14], 23, -35309556)
-    a = md5_hh(a, b, c, d, x[i + 1], 4, -1530992060)
-    d = md5_hh(d, a, b, c, x[i + 4], 11, 1272893353)
-    c = md5_hh(c, d, a, b, x[i + 7], 16, -155497632)
-    b = md5_hh(b, c, d, a, x[i + 10], 23, -1094730640)
-    a = md5_hh(a, b, c, d, x[i + 13], 4, 681279174)
-    d = md5_hh(d, a, b, c, x[i + 0], 11, -358537222)
-    c = md5_hh(c, d, a, b, x[i + 3], 16, -722521979)
-    b = md5_hh(b, c, d, a, x[i + 6], 23, 76029189)
-    a = md5_hh(a, b, c, d, x[i + 9], 4, -640364487)
-    d = md5_hh(d, a, b, c, x[i + 12], 11, -421815835)
-    c = md5_hh(c, d, a, b, x[i + 15], 16, 530742520)
-    b = md5_hh(b, c, d, a, x[i + 2], 23, -995338651)
+},{"../hash":114}],118:[function(require,module,exports){
+var hash = require('../hash');
+var utils = hash.utils;
+var assert = utils.assert;
 
-    a = md5_ii(a, b, c, d, x[i + 0], 6, -198630844)
-    d = md5_ii(d, a, b, c, x[i + 7], 10, 1126891415)
-    c = md5_ii(c, d, a, b, x[i + 14], 15, -1416354905)
-    b = md5_ii(b, c, d, a, x[i + 5], 21, -57434055)
-    a = md5_ii(a, b, c, d, x[i + 12], 6, 1700485571)
-    d = md5_ii(d, a, b, c, x[i + 3], 10, -1894986606)
-    c = md5_ii(c, d, a, b, x[i + 10], 15, -1051523)
-    b = md5_ii(b, c, d, a, x[i + 1], 21, -2054922799)
-    a = md5_ii(a, b, c, d, x[i + 8], 6, 1873313359)
-    d = md5_ii(d, a, b, c, x[i + 15], 10, -30611744)
-    c = md5_ii(c, d, a, b, x[i + 6], 15, -1560198380)
-    b = md5_ii(b, c, d, a, x[i + 13], 21, 1309151649)
-    a = md5_ii(a, b, c, d, x[i + 4], 6, -145523070)
-    d = md5_ii(d, a, b, c, x[i + 11], 10, -1120210379)
-    c = md5_ii(c, d, a, b, x[i + 2], 15, 718787259)
-    b = md5_ii(b, c, d, a, x[i + 9], 21, -343485551)
+var rotr32 = utils.rotr32;
+var rotl32 = utils.rotl32;
+var sum32 = utils.sum32;
+var sum32_4 = utils.sum32_4;
+var sum32_5 = utils.sum32_5;
+var rotr64_hi = utils.rotr64_hi;
+var rotr64_lo = utils.rotr64_lo;
+var shr64_hi = utils.shr64_hi;
+var shr64_lo = utils.shr64_lo;
+var sum64 = utils.sum64;
+var sum64_hi = utils.sum64_hi;
+var sum64_lo = utils.sum64_lo;
+var sum64_4_hi = utils.sum64_4_hi;
+var sum64_4_lo = utils.sum64_4_lo;
+var sum64_5_hi = utils.sum64_5_hi;
+var sum64_5_lo = utils.sum64_5_lo;
+var BlockHash = hash.common.BlockHash;
 
-    a = safe_add(a, olda)
-    b = safe_add(b, oldb)
-    c = safe_add(c, oldc)
-    d = safe_add(d, oldd)
-  }
+var sha256_K = [
+  0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
+  0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+  0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+  0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+  0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+  0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+  0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
+  0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+  0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+  0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+  0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
+  0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+  0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
+  0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+  0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+  0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+];
 
-  return [a, b, c, d]
-}
+var sha512_K = [
+  0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
+  0xb5c0fbcf, 0xec4d3b2f, 0xe9b5dba5, 0x8189dbbc,
+  0x3956c25b, 0xf348b538, 0x59f111f1, 0xb605d019,
+  0x923f82a4, 0xaf194f9b, 0xab1c5ed5, 0xda6d8118,
+  0xd807aa98, 0xa3030242, 0x12835b01, 0x45706fbe,
+  0x243185be, 0x4ee4b28c, 0x550c7dc3, 0xd5ffb4e2,
+  0x72be5d74, 0xf27b896f, 0x80deb1fe, 0x3b1696b1,
+  0x9bdc06a7, 0x25c71235, 0xc19bf174, 0xcf692694,
+  0xe49b69c1, 0x9ef14ad2, 0xefbe4786, 0x384f25e3,
+  0x0fc19dc6, 0x8b8cd5b5, 0x240ca1cc, 0x77ac9c65,
+  0x2de92c6f, 0x592b0275, 0x4a7484aa, 0x6ea6e483,
+  0x5cb0a9dc, 0xbd41fbd4, 0x76f988da, 0x831153b5,
+  0x983e5152, 0xee66dfab, 0xa831c66d, 0x2db43210,
+  0xb00327c8, 0x98fb213f, 0xbf597fc7, 0xbeef0ee4,
+  0xc6e00bf3, 0x3da88fc2, 0xd5a79147, 0x930aa725,
+  0x06ca6351, 0xe003826f, 0x14292967, 0x0a0e6e70,
+  0x27b70a85, 0x46d22ffc, 0x2e1b2138, 0x5c26c926,
+  0x4d2c6dfc, 0x5ac42aed, 0x53380d13, 0x9d95b3df,
+  0x650a7354, 0x8baf63de, 0x766a0abb, 0x3c77b2a8,
+  0x81c2c92e, 0x47edaee6, 0x92722c85, 0x1482353b,
+  0xa2bfe8a1, 0x4cf10364, 0xa81a664b, 0xbc423001,
+  0xc24b8b70, 0xd0f89791, 0xc76c51a3, 0x0654be30,
+  0xd192e819, 0xd6ef5218, 0xd6990624, 0x5565a910,
+  0xf40e3585, 0x5771202a, 0x106aa070, 0x32bbd1b8,
+  0x19a4c116, 0xb8d2d0c8, 0x1e376c08, 0x5141ab53,
+  0x2748774c, 0xdf8eeb99, 0x34b0bcb5, 0xe19b48a8,
+  0x391c0cb3, 0xc5c95a63, 0x4ed8aa4a, 0xe3418acb,
+  0x5b9cca4f, 0x7763e373, 0x682e6ff3, 0xd6b2b8a3,
+  0x748f82ee, 0x5defb2fc, 0x78a5636f, 0x43172f60,
+  0x84c87814, 0xa1f0ab72, 0x8cc70208, 0x1a6439ec,
+  0x90befffa, 0x23631e28, 0xa4506ceb, 0xde82bde9,
+  0xbef9a3f7, 0xb2c67915, 0xc67178f2, 0xe372532b,
+  0xca273ece, 0xea26619c, 0xd186b8c7, 0x21c0c207,
+  0xeada7dd6, 0xcde0eb1e, 0xf57d4f7f, 0xee6ed178,
+  0x06f067aa, 0x72176fba, 0x0a637dc5, 0xa2c898a6,
+  0x113f9804, 0xbef90dae, 0x1b710b35, 0x131c471b,
+  0x28db77f5, 0x23047d84, 0x32caab7b, 0x40c72493,
+  0x3c9ebe0a, 0x15c9bebc, 0x431d67c4, 0x9c100d4c,
+  0x4cc5d4be, 0xcb3e42b6, 0x597f299c, 0xfc657e2a,
+  0x5fcb6fab, 0x3ad6faec, 0x6c44198c, 0x4a475817
+];
 
-/*
- * These functions implement the four basic operations the algorithm uses.
- */
-function md5_cmn (q, a, b, x, s, t) {
-  return safe_add(bit_rol(safe_add(safe_add(a, q), safe_add(x, t)), s), b)
-}
+var sha1_K = [
+  0x5A827999, 0x6ED9EBA1,
+  0x8F1BBCDC, 0xCA62C1D6
+];
 
-function md5_ff (a, b, c, d, x, s, t) {
-  return md5_cmn((b & c) | ((~b) & d), a, b, x, s, t)
-}
+function SHA256() {
+  if (!(this instanceof SHA256))
+    return new SHA256();
 
-function md5_gg (a, b, c, d, x, s, t) {
-  return md5_cmn((b & d) | (c & (~d)), a, b, x, s, t)
+  BlockHash.call(this);
+  this.h = [ 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+             0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 ];
+  this.k = sha256_K;
+  this.W = new Array(64);
 }
+utils.inherits(SHA256, BlockHash);
+exports.sha256 = SHA256;
 
-function md5_hh (a, b, c, d, x, s, t) {
-  return md5_cmn(b ^ c ^ d, a, b, x, s, t)
-}
+SHA256.blockSize = 512;
+SHA256.outSize = 256;
+SHA256.hmacStrength = 192;
+SHA256.padLength = 64;
 
-function md5_ii (a, b, c, d, x, s, t) {
-  return md5_cmn(c ^ (b | (~d)), a, b, x, s, t)
-}
+SHA256.prototype._update = function _update(msg, start) {
+  var W = this.W;
 
-/*
- * Add integers, wrapping at 2^32. This uses 16-bit operations internally
- * to work around bugs in some JS interpreters.
- */
-function safe_add (x, y) {
-  var lsw = (x & 0xFFFF) + (y & 0xFFFF)
-  var msw = (x >> 16) + (y >> 16) + (lsw >> 16)
-  return (msw << 16) | (lsw & 0xFFFF)
-}
+  for (var i = 0; i < 16; i++)
+    W[i] = msg[start + i];
+  for (; i < W.length; i++)
+    W[i] = sum32_4(g1_256(W[i - 2]), W[i - 7], g0_256(W[i - 15]), W[i - 16]);
 
-/*
- * Bitwise rotate a 32-bit number to the left.
- */
-function bit_rol (num, cnt) {
-  return (num << cnt) | (num >>> (32 - cnt))
-}
+  var a = this.h[0];
+  var b = this.h[1];
+  var c = this.h[2];
+  var d = this.h[3];
+  var e = this.h[4];
+  var f = this.h[5];
+  var g = this.h[6];
+  var h = this.h[7];
 
-module.exports = function md5 (buf) {
-  return makeHash(buf, core_md5)
-}
+  assert(this.k.length === W.length);
+  for (var i = 0; i < W.length; i++) {
+    var T1 = sum32_5(h, s1_256(e), ch32(e, f, g), this.k[i], W[i]);
+    var T2 = sum32(s0_256(a), maj32(a, b, c));
+    h = g;
+    g = f;
+    f = e;
+    e = sum32(d, T1);
+    d = c;
+    c = b;
+    b = a;
+    a = sum32(T1, T2);
+  }
 
-},{"./make-hash":83}],85:[function(require,module,exports){
-'use strict'
-var inherits = require('inherits')
-var Legacy = require('./legacy')
-var Base = require('cipher-base')
-var Buffer = require('safe-buffer').Buffer
-var md5 = require('create-hash/md5')
-var RIPEMD160 = require('ripemd160')
+  this.h[0] = sum32(this.h[0], a);
+  this.h[1] = sum32(this.h[1], b);
+  this.h[2] = sum32(this.h[2], c);
+  this.h[3] = sum32(this.h[3], d);
+  this.h[4] = sum32(this.h[4], e);
+  this.h[5] = sum32(this.h[5], f);
+  this.h[6] = sum32(this.h[6], g);
+  this.h[7] = sum32(this.h[7], h);
+};
 
-var sha = require('sha.js')
+SHA256.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
 
-var ZEROS = Buffer.alloc(128)
+function SHA224() {
+  if (!(this instanceof SHA224))
+    return new SHA224();
 
-function Hmac (alg, key) {
-  Base.call(this, 'digest')
-  if (typeof key === 'string') {
-    key = Buffer.from(key)
-  }
+  SHA256.call(this);
+  this.h = [ 0xc1059ed8, 0x367cd507, 0x3070dd17, 0xf70e5939,
+             0xffc00b31, 0x68581511, 0x64f98fa7, 0xbefa4fa4 ];
+}
+utils.inherits(SHA224, SHA256);
+exports.sha224 = SHA224;
 
-  var blocksize = (alg === 'sha512' || alg === 'sha384') ? 128 : 64
+SHA224.blockSize = 512;
+SHA224.outSize = 224;
+SHA224.hmacStrength = 192;
+SHA224.padLength = 64;
 
-  this._alg = alg
-  this._key = key
-  if (key.length > blocksize) {
-    var hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
-    key = hash.update(key).digest()
-  } else if (key.length < blocksize) {
-    key = Buffer.concat([key, ZEROS], blocksize)
-  }
+SHA224.prototype._digest = function digest(enc) {
+  // Just truncate output
+  if (enc === 'hex')
+    return utils.toHex32(this.h.slice(0, 7), 'big');
+  else
+    return utils.split32(this.h.slice(0, 7), 'big');
+};
 
-  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
-  var opad = this._opad = Buffer.allocUnsafe(blocksize)
+function SHA512() {
+  if (!(this instanceof SHA512))
+    return new SHA512();
 
-  for (var i = 0; i < blocksize; i++) {
-    ipad[i] = key[i] ^ 0x36
-    opad[i] = key[i] ^ 0x5C
-  }
-  this._hash = alg === 'rmd160' ? new RIPEMD160() : sha(alg)
-  this._hash.update(ipad)
+  BlockHash.call(this);
+  this.h = [ 0x6a09e667, 0xf3bcc908,
+             0xbb67ae85, 0x84caa73b,
+             0x3c6ef372, 0xfe94f82b,
+             0xa54ff53a, 0x5f1d36f1,
+             0x510e527f, 0xade682d1,
+             0x9b05688c, 0x2b3e6c1f,
+             0x1f83d9ab, 0xfb41bd6b,
+             0x5be0cd19, 0x137e2179 ];
+  this.k = sha512_K;
+  this.W = new Array(160);
 }
+utils.inherits(SHA512, BlockHash);
+exports.sha512 = SHA512;
 
-inherits(Hmac, Base)
+SHA512.blockSize = 1024;
+SHA512.outSize = 512;
+SHA512.hmacStrength = 192;
+SHA512.padLength = 128;
 
-Hmac.prototype._update = function (data) {
-  this._hash.update(data)
-}
+SHA512.prototype._prepareBlock = function _prepareBlock(msg, start) {
+  var W = this.W;
 
-Hmac.prototype._final = function () {
-  var h = this._hash.digest()
-  var hash = this._alg === 'rmd160' ? new RIPEMD160() : sha(this._alg)
-  return hash.update(this._opad).update(h).digest()
-}
+  // 32 x 32bit words
+  for (var i = 0; i < 32; i++)
+    W[i] = msg[start + i];
+  for (; i < W.length; i += 2) {
+    var c0_hi = g1_512_hi(W[i - 4], W[i - 3]);  // i - 2
+    var c0_lo = g1_512_lo(W[i - 4], W[i - 3]);
+    var c1_hi = W[i - 14];  // i - 7
+    var c1_lo = W[i - 13];
+    var c2_hi = g0_512_hi(W[i - 30], W[i - 29]);  // i - 15
+    var c2_lo = g0_512_lo(W[i - 30], W[i - 29]);
+    var c3_hi = W[i - 32];  // i - 16
+    var c3_lo = W[i - 31];
 
-module.exports = function createHmac (alg, key) {
-  alg = alg.toLowerCase()
-  if (alg === 'rmd160' || alg === 'ripemd160') {
-    return new Hmac('rmd160', key)
-  }
-  if (alg === 'md5') {
-    return new Legacy(md5, key)
+    W[i] = sum64_4_hi(c0_hi, c0_lo,
+                      c1_hi, c1_lo,
+                      c2_hi, c2_lo,
+                      c3_hi, c3_lo);
+    W[i + 1] = sum64_4_lo(c0_hi, c0_lo,
+                          c1_hi, c1_lo,
+                          c2_hi, c2_lo,
+                          c3_hi, c3_lo);
   }
-  return new Hmac(alg, key)
-}
+};
 
-},{"./legacy":86,"cipher-base":81,"create-hash/md5":84,"inherits":93,"ripemd160":97,"safe-buffer":98,"sha.js":100}],86:[function(require,module,exports){
-'use strict'
-var inherits = require('inherits')
-var Buffer = require('safe-buffer').Buffer
+SHA512.prototype._update = function _update(msg, start) {
+  this._prepareBlock(msg, start);
 
-var Base = require('cipher-base')
+  var W = this.W;
 
-var ZEROS = Buffer.alloc(128)
-var blocksize = 64
+  var ah = this.h[0];
+  var al = this.h[1];
+  var bh = this.h[2];
+  var bl = this.h[3];
+  var ch = this.h[4];
+  var cl = this.h[5];
+  var dh = this.h[6];
+  var dl = this.h[7];
+  var eh = this.h[8];
+  var el = this.h[9];
+  var fh = this.h[10];
+  var fl = this.h[11];
+  var gh = this.h[12];
+  var gl = this.h[13];
+  var hh = this.h[14];
+  var hl = this.h[15];
+
+  assert(this.k.length === W.length);
+  for (var i = 0; i < W.length; i += 2) {
+    var c0_hi = hh;
+    var c0_lo = hl;
+    var c1_hi = s1_512_hi(eh, el);
+    var c1_lo = s1_512_lo(eh, el);
+    var c2_hi = ch64_hi(eh, el, fh, fl, gh, gl);
+    var c2_lo = ch64_lo(eh, el, fh, fl, gh, gl);
+    var c3_hi = this.k[i];
+    var c3_lo = this.k[i + 1];
+    var c4_hi = W[i];
+    var c4_lo = W[i + 1];
 
-function Hmac (alg, key) {
-  Base.call(this, 'digest')
-  if (typeof key === 'string') {
-    key = Buffer.from(key)
-  }
+    var T1_hi = sum64_5_hi(c0_hi, c0_lo,
+                           c1_hi, c1_lo,
+                           c2_hi, c2_lo,
+                           c3_hi, c3_lo,
+                           c4_hi, c4_lo);
+    var T1_lo = sum64_5_lo(c0_hi, c0_lo,
+                           c1_hi, c1_lo,
+                           c2_hi, c2_lo,
+                           c3_hi, c3_lo,
+                           c4_hi, c4_lo);
 
-  this._alg = alg
-  this._key = key
+    var c0_hi = s0_512_hi(ah, al);
+    var c0_lo = s0_512_lo(ah, al);
+    var c1_hi = maj64_hi(ah, al, bh, bl, ch, cl);
+    var c1_lo = maj64_lo(ah, al, bh, bl, ch, cl);
 
-  if (key.length > blocksize) {
-    key = alg(key)
-  } else if (key.length < blocksize) {
-    key = Buffer.concat([key, ZEROS], blocksize)
-  }
+    var T2_hi = sum64_hi(c0_hi, c0_lo, c1_hi, c1_lo);
+    var T2_lo = sum64_lo(c0_hi, c0_lo, c1_hi, c1_lo);
 
-  var ipad = this._ipad = Buffer.allocUnsafe(blocksize)
-  var opad = this._opad = Buffer.allocUnsafe(blocksize)
+    hh = gh;
+    hl = gl;
 
-  for (var i = 0; i < blocksize; i++) {
-    ipad[i] = key[i] ^ 0x36
-    opad[i] = key[i] ^ 0x5C
-  }
+    gh = fh;
+    gl = fl;
 
-  this._hash = [ipad]
-}
+    fh = eh;
+    fl = el;
 
-inherits(Hmac, Base)
+    eh = sum64_hi(dh, dl, T1_hi, T1_lo);
+    el = sum64_lo(dl, dl, T1_hi, T1_lo);
 
-Hmac.prototype._update = function (data) {
-  this._hash.push(data)
-}
+    dh = ch;
+    dl = cl;
 
-Hmac.prototype._final = function () {
-  var h = this._alg(Buffer.concat(this._hash))
-  return this._alg(Buffer.concat([this._opad, h]))
-}
-module.exports = Hmac
+    ch = bh;
+    cl = bl;
 
-},{"cipher-base":81,"inherits":93,"safe-buffer":98}],87:[function(require,module,exports){
-var assert = require('assert')
-var BigInteger = require('bigi')
+    bh = ah;
+    bl = al;
 
-var Point = require('./point')
+    ah = sum64_hi(T1_hi, T1_lo, T2_hi, T2_lo);
+    al = sum64_lo(T1_hi, T1_lo, T2_hi, T2_lo);
+  }
 
-function Curve (p, a, b, Gx, Gy, n, h) {
-  this.p = p
-  this.a = a
-  this.b = b
-  this.G = Point.fromAffine(this, Gx, Gy)
-  this.n = n
-  this.h = h
+  sum64(this.h, 0, ah, al);
+  sum64(this.h, 2, bh, bl);
+  sum64(this.h, 4, ch, cl);
+  sum64(this.h, 6, dh, dl);
+  sum64(this.h, 8, eh, el);
+  sum64(this.h, 10, fh, fl);
+  sum64(this.h, 12, gh, gl);
+  sum64(this.h, 14, hh, hl);
+};
 
-  this.infinity = new Point(this, null, null, BigInteger.ZERO)
+SHA512.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
 
-  // result caching
-  this.pOverFour = p.add(BigInteger.ONE).shiftRight(2)
+function SHA384() {
+  if (!(this instanceof SHA384))
+    return new SHA384();
 
-  // determine size of p in bytes
-  this.pLength = Math.floor((this.p.bitLength() + 7) / 8)
+  SHA512.call(this);
+  this.h = [ 0xcbbb9d5d, 0xc1059ed8,
+             0x629a292a, 0x367cd507,
+             0x9159015a, 0x3070dd17,
+             0x152fecd8, 0xf70e5939,
+             0x67332667, 0xffc00b31,
+             0x8eb44a87, 0x68581511,
+             0xdb0c2e0d, 0x64f98fa7,
+             0x47b5481d, 0xbefa4fa4 ];
 }
+utils.inherits(SHA384, SHA512);
+exports.sha384 = SHA384;
 
-Curve.prototype.pointFromX = function (isOdd, x) {
-  var alpha = x.pow(3).add(this.a.multiply(x)).add(this.b).mod(this.p)
-  var beta = alpha.modPow(this.pOverFour, this.p) // XXX: not compatible with all curves
-
-  var y = beta
-  if (beta.isEven() ^ !isOdd) {
-    y = this.p.subtract(y) // -y % p
-  }
+SHA384.blockSize = 1024;
+SHA384.outSize = 384;
+SHA384.hmacStrength = 192;
+SHA384.padLength = 128;
 
-  return Point.fromAffine(this, x, y)
-}
+SHA384.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h.slice(0, 12), 'big');
+  else
+    return utils.split32(this.h.slice(0, 12), 'big');
+};
 
-Curve.prototype.isInfinity = function (Q) {
-  if (Q === this.infinity) return true
+function SHA1() {
+  if (!(this instanceof SHA1))
+    return new SHA1();
 
-  return Q.z.signum() === 0 && Q.y.signum() !== 0
+  BlockHash.call(this);
+  this.h = [ 0x67452301, 0xefcdab89, 0x98badcfe,
+             0x10325476, 0xc3d2e1f0 ];
+  this.W = new Array(80);
 }
 
-Curve.prototype.isOnCurve = function (Q) {
-  if (this.isInfinity(Q)) return true
-
-  var x = Q.affineX
-  var y = Q.affineY
-  var a = this.a
-  var b = this.b
-  var p = this.p
-
-  // Check that xQ and yQ are integers in the interval [0, p - 1]
-  if (x.signum() < 0 || x.compareTo(p) >= 0) return false
-  if (y.signum() < 0 || y.compareTo(p) >= 0) return false
+utils.inherits(SHA1, BlockHash);
+exports.sha1 = SHA1;
 
-  // and check that y^2 = x^3 + ax + b (mod p)
-  var lhs = y.square().mod(p)
-  var rhs = x.pow(3).add(a.multiply(x)).add(b).mod(p)
-  return lhs.equals(rhs)
-}
+SHA1.blockSize = 512;
+SHA1.outSize = 160;
+SHA1.hmacStrength = 80;
+SHA1.padLength = 64;
 
-/**
- * Validate an elliptic curve point.
- *
- * See SEC 1, section 3.2.2.1: Elliptic Curve Public Key Validation Primitive
- */
-Curve.prototype.validate = function (Q) {
-  // Check Q != O
-  assert(!this.isInfinity(Q), 'Point is at infinity')
-  assert(this.isOnCurve(Q), 'Point is not on the curve')
+SHA1.prototype._update = function _update(msg, start) {
+  var W = this.W;
 
-  // Check nQ = O (where Q is a scalar multiple of G)
-  var nQ = Q.multiply(this.n)
-  assert(this.isInfinity(nQ), 'Point is not a scalar multiple of G')
+  for (var i = 0; i < 16; i++)
+    W[i] = msg[start + i];
 
-  return true
-}
+  for(; i < W.length; i++)
+    W[i] = rotl32(W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16], 1);
 
-module.exports = Curve
+  var a = this.h[0];
+  var b = this.h[1];
+  var c = this.h[2];
+  var d = this.h[3];
+  var e = this.h[4];
 
-},{"./point":91,"assert":1,"bigi":37}],88:[function(require,module,exports){
-module.exports={
-  "secp128r1": {
-    "p": "fffffffdffffffffffffffffffffffff",
-    "a": "fffffffdfffffffffffffffffffffffc",
-    "b": "e87579c11079f43dd824993c2cee5ed3",
-    "n": "fffffffe0000000075a30d1b9038a115",
-    "h": "01",
-    "Gx": "161ff7528b899b2d0c28607ca52c5b86",
-    "Gy": "cf5ac8395bafeb13c02da292dded7a83"
-  },
-  "secp160k1": {
-    "p": "fffffffffffffffffffffffffffffffeffffac73",
-    "a": "00",
-    "b": "07",
-    "n": "0100000000000000000001b8fa16dfab9aca16b6b3",
-    "h": "01",
-    "Gx": "3b4c382ce37aa192a4019e763036f4f5dd4d7ebb",
-    "Gy": "938cf935318fdced6bc28286531733c3f03c4fee"
-  },
-  "secp160r1": {
-    "p": "ffffffffffffffffffffffffffffffff7fffffff",
-    "a": "ffffffffffffffffffffffffffffffff7ffffffc",
-    "b": "1c97befc54bd7a8b65acf89f81d4d4adc565fa45",
-    "n": "0100000000000000000001f4c8f927aed3ca752257",
-    "h": "01",
-    "Gx": "4a96b5688ef573284664698968c38bb913cbfc82",
-    "Gy": "23a628553168947d59dcc912042351377ac5fb32"
-  },
-  "secp192k1": {
-    "p": "fffffffffffffffffffffffffffffffffffffffeffffee37",
-    "a": "00",
-    "b": "03",
-    "n": "fffffffffffffffffffffffe26f2fc170f69466a74defd8d",
-    "h": "01",
-    "Gx": "db4ff10ec057e9ae26b07d0280b7f4341da5d1b1eae06c7d",
-    "Gy": "9b2f2f6d9c5628a7844163d015be86344082aa88d95e2f9d"
-  },
-  "secp192r1": {
-    "p": "fffffffffffffffffffffffffffffffeffffffffffffffff",
-    "a": "fffffffffffffffffffffffffffffffefffffffffffffffc",
-    "b": "64210519e59c80e70fa7e9ab72243049feb8deecc146b9b1",
-    "n": "ffffffffffffffffffffffff99def836146bc9b1b4d22831",
-    "h": "01",
-    "Gx": "188da80eb03090f67cbf20eb43a18800f4ff0afd82ff1012",
-    "Gy": "07192b95ffc8da78631011ed6b24cdd573f977a11e794811"
-  },
-  "secp256k1": {
-    "p": "fffffffffffffffffffffffffffffffffffffffffffffffffffffffefffffc2f",
-    "a": "00",
-    "b": "07",
-    "n": "fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141",
-    "h": "01",
-    "Gx": "79be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798",
-    "Gy": "483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"
-  },
-  "secp256r1": {
-    "p": "ffffffff00000001000000000000000000000000ffffffffffffffffffffffff",
-    "a": "ffffffff00000001000000000000000000000000fffffffffffffffffffffffc",
-    "b": "5ac635d8aa3a93e7b3ebbd55769886bc651d06b0cc53b0f63bce3c3e27d2604b",
-    "n": "ffffffff00000000ffffffffffffffffbce6faada7179e84f3b9cac2fc632551",
-    "h": "01",
-    "Gx": "6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296",
-    "Gy": "4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5"
+  for (var i = 0; i < W.length; i++) {
+    var s = ~~(i / 20);
+    var t = sum32_5(rotl32(a, 5), ft_1(s, b, c, d), e, W[i], sha1_K[s]);
+    e = d;
+    d = c;
+    c = rotl32(b, 30);
+    b = a;
+    a = t;
   }
-}
 
-},{}],89:[function(require,module,exports){
-var Point = require('./point')
-var Curve = require('./curve')
+  this.h[0] = sum32(this.h[0], a);
+  this.h[1] = sum32(this.h[1], b);
+  this.h[2] = sum32(this.h[2], c);
+  this.h[3] = sum32(this.h[3], d);
+  this.h[4] = sum32(this.h[4], e);
+};
 
-var getCurveByName = require('./names')
+SHA1.prototype._digest = function digest(enc) {
+  if (enc === 'hex')
+    return utils.toHex32(this.h, 'big');
+  else
+    return utils.split32(this.h, 'big');
+};
 
-module.exports = {
-  Curve: Curve,
-  Point: Point,
-  getCurveByName: getCurveByName
+function ch32(x, y, z) {
+  return (x & y) ^ ((~x) & z);
 }
 
-},{"./curve":87,"./names":90,"./point":91}],90:[function(require,module,exports){
-var BigInteger = require('bigi')
-
-var curves = require('./curves.json')
-var Curve = require('./curve')
+function maj32(x, y, z) {
+  return (x & y) ^ (x & z) ^ (y & z);
+}
 
-function getCurveByName (name) {
-  var curve = curves[name]
-  if (!curve) return null
+function p32(x, y, z) {
+  return x ^ y ^ z;
+}
 
-  var p = new BigInteger(curve.p, 16)
-  var a = new BigInteger(curve.a, 16)
-  var b = new BigInteger(curve.b, 16)
-  var n = new BigInteger(curve.n, 16)
-  var h = new BigInteger(curve.h, 16)
-  var Gx = new BigInteger(curve.Gx, 16)
-  var Gy = new BigInteger(curve.Gy, 16)
+function s0_256(x) {
+  return rotr32(x, 2) ^ rotr32(x, 13) ^ rotr32(x, 22);
+}
 
-  return new Curve(p, a, b, Gx, Gy, n, h)
+function s1_256(x) {
+  return rotr32(x, 6) ^ rotr32(x, 11) ^ rotr32(x, 25);
 }
 
-module.exports = getCurveByName
+function g0_256(x) {
+  return rotr32(x, 7) ^ rotr32(x, 18) ^ (x >>> 3);
+}
 
-},{"./curve":87,"./curves.json":88,"bigi":37}],91:[function(require,module,exports){
-(function (Buffer){
-var assert = require('assert')
-var BigInteger = require('bigi')
+function g1_256(x) {
+  return rotr32(x, 17) ^ rotr32(x, 19) ^ (x >>> 10);
+}
 
-var THREE = BigInteger.valueOf(3)
+function ft_1(s, x, y, z) {
+  if (s === 0)
+    return ch32(x, y, z);
+  if (s === 1 || s === 3)
+    return p32(x, y, z);
+  if (s === 2)
+    return maj32(x, y, z);
+}
 
-function Point (curve, x, y, z) {
-  assert.notStrictEqual(z, undefined, 'Missing Z coordinate')
+function ch64_hi(xh, xl, yh, yl, zh, zl) {
+  var r = (xh & yh) ^ ((~xh) & zh);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-  this.curve = curve
-  this.x = x
-  this.y = y
-  this.z = z
-  this._zInv = null
+function ch64_lo(xh, xl, yh, yl, zh, zl) {
+  var r = (xl & yl) ^ ((~xl) & zl);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-  this.compressed = true
+function maj64_hi(xh, xl, yh, yl, zh, zl) {
+  var r = (xh & yh) ^ (xh & zh) ^ (yh & zh);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
 }
 
-Object.defineProperty(Point.prototype, 'zInv', {
-  get: function () {
-    if (this._zInv === null) {
-      this._zInv = this.z.modInverse(this.curve.p)
-    }
+function maj64_lo(xh, xl, yh, yl, zh, zl) {
+  var r = (xl & yl) ^ (xl & zl) ^ (yl & zl);
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-    return this._zInv
-  }
-})
+function s0_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 28);
+  var c1_hi = rotr64_hi(xl, xh, 2);  // 34
+  var c2_hi = rotr64_hi(xl, xh, 7);  // 39
 
-Object.defineProperty(Point.prototype, 'affineX', {
-  get: function () {
-    return this.x.multiply(this.zInv).mod(this.curve.p)
-  }
-})
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-Object.defineProperty(Point.prototype, 'affineY', {
-  get: function () {
-    return this.y.multiply(this.zInv).mod(this.curve.p)
-  }
-})
+function s0_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 28);
+  var c1_lo = rotr64_lo(xl, xh, 2);  // 34
+  var c2_lo = rotr64_lo(xl, xh, 7);  // 39
 
-Point.fromAffine = function (curve, x, y) {
-  return new Point(curve, x, y, BigInteger.ONE)
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
 }
 
-Point.prototype.equals = function (other) {
-  if (other === this) return true
-  if (this.curve.isInfinity(this)) return this.curve.isInfinity(other)
-  if (this.curve.isInfinity(other)) return this.curve.isInfinity(this)
-
-  // u = Y2 * Z1 - Y1 * Z2
-  var u = other.y.multiply(this.z).subtract(this.y.multiply(other.z)).mod(this.curve.p)
+function s1_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 14);
+  var c1_hi = rotr64_hi(xh, xl, 18);
+  var c2_hi = rotr64_hi(xl, xh, 9);  // 41
 
-  if (u.signum() !== 0) return false
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-  // v = X2 * Z1 - X1 * Z2
-  var v = other.x.multiply(this.z).subtract(this.x.multiply(other.z)).mod(this.curve.p)
+function s1_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 14);
+  var c1_lo = rotr64_lo(xh, xl, 18);
+  var c2_lo = rotr64_lo(xl, xh, 9);  // 41
 
-  return v.signum() === 0
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
 }
 
-Point.prototype.negate = function () {
-  var y = this.curve.p.subtract(this.y)
+function g0_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 1);
+  var c1_hi = rotr64_hi(xh, xl, 8);
+  var c2_hi = shr64_hi(xh, xl, 7);
 
-  return new Point(this.curve, this.x, y, this.z)
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
 }
 
-Point.prototype.add = function (b) {
-  if (this.curve.isInfinity(this)) return b
-  if (this.curve.isInfinity(b)) return this
+function g0_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 1);
+  var c1_lo = rotr64_lo(xh, xl, 8);
+  var c2_lo = shr64_lo(xh, xl, 7);
 
-  var x1 = this.x
-  var y1 = this.y
-  var x2 = b.x
-  var y2 = b.y
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-  // u = Y2 * Z1 - Y1 * Z2
-  var u = y2.multiply(this.z).subtract(y1.multiply(b.z)).mod(this.curve.p)
-  // v = X2 * Z1 - X1 * Z2
-  var v = x2.multiply(this.z).subtract(x1.multiply(b.z)).mod(this.curve.p)
+function g1_512_hi(xh, xl) {
+  var c0_hi = rotr64_hi(xh, xl, 19);
+  var c1_hi = rotr64_hi(xl, xh, 29);  // 61
+  var c2_hi = shr64_hi(xh, xl, 6);
 
-  if (v.signum() === 0) {
-    if (u.signum() === 0) {
-      return this.twice() // this == b, so double
-    }
+  var r = c0_hi ^ c1_hi ^ c2_hi;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-    return this.curve.infinity // this = -b, so infinity
-  }
+function g1_512_lo(xh, xl) {
+  var c0_lo = rotr64_lo(xh, xl, 19);
+  var c1_lo = rotr64_lo(xl, xh, 29);  // 61
+  var c2_lo = shr64_lo(xh, xl, 6);
 
-  var v2 = v.square()
-  var v3 = v2.multiply(v)
-  var x1v2 = x1.multiply(v2)
-  var zu2 = u.square().multiply(this.z)
+  var r = c0_lo ^ c1_lo ^ c2_lo;
+  if (r < 0)
+    r += 0x100000000;
+  return r;
+}
 
-  // x3 = v * (z2 * (z1 * u^2 - 2 * x1 * v^2) - v^3)
-  var x3 = zu2.subtract(x1v2.shiftLeft(1)).multiply(b.z).subtract(v3).multiply(v).mod(this.curve.p)
-  // y3 = z2 * (3 * x1 * u * v^2 - y1 * v^3 - z1 * u^3) + u * v^3
-  var y3 = x1v2.multiply(THREE).multiply(u).subtract(y1.multiply(v3)).subtract(zu2.multiply(u)).multiply(b.z).add(u.multiply(v3)).mod(this.curve.p)
-  // z3 = v^3 * z1 * z2
-  var z3 = v3.multiply(this.z).multiply(b.z).mod(this.curve.p)
+},{"../hash":114}],119:[function(require,module,exports){
+var utils = exports;
+var inherits = require('inherits');
 
-  return new Point(this.curve, x3, y3, z3)
+function toArray(msg, enc) {
+  if (Array.isArray(msg))
+    return msg.slice();
+  if (!msg)
+    return [];
+  var res = [];
+  if (typeof msg === 'string') {
+    if (!enc) {
+      for (var i = 0; i < msg.length; i++) {
+        var c = msg.charCodeAt(i);
+        var hi = c >> 8;
+        var lo = c & 0xff;
+        if (hi)
+          res.push(hi, lo);
+        else
+          res.push(lo);
+      }
+    } else if (enc === 'hex') {
+      msg = msg.replace(/[^a-z0-9]+/ig, '');
+      if (msg.length % 2 !== 0)
+        msg = '0' + msg;
+      for (var i = 0; i < msg.length; i += 2)
+        res.push(parseInt(msg[i] + msg[i + 1], 16));
+    }
+  } else {
+    for (var i = 0; i < msg.length; i++)
+      res[i] = msg[i] | 0;
+  }
+  return res;
 }
+utils.toArray = toArray;
 
-Point.prototype.twice = function () {
-  if (this.curve.isInfinity(this)) return this
-  if (this.y.signum() === 0) return this.curve.infinity
-
-  var x1 = this.x
-  var y1 = this.y
-
-  var y1z1 = y1.multiply(this.z).mod(this.curve.p)
-  var y1sqz1 = y1z1.multiply(y1).mod(this.curve.p)
-  var a = this.curve.a
+function toHex(msg) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++)
+    res += zero2(msg[i].toString(16));
+  return res;
+}
+utils.toHex = toHex;
 
-  // w = 3 * x1^2 + a * z1^2
-  var w = x1.square().multiply(THREE)
+function htonl(w) {
+  var res = (w >>> 24) |
+            ((w >>> 8) & 0xff00) |
+            ((w << 8) & 0xff0000) |
+            ((w & 0xff) << 24);
+  return res >>> 0;
+}
+utils.htonl = htonl;
 
-  if (a.signum() !== 0) {
-    w = w.add(this.z.square().multiply(a))
+function toHex32(msg, endian) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++) {
+    var w = msg[i];
+    if (endian === 'little')
+      w = htonl(w);
+    res += zero8(w.toString(16));
   }
+  return res;
+}
+utils.toHex32 = toHex32;
 
-  w = w.mod(this.curve.p)
-  // x3 = 2 * y1 * z1 * (w^2 - 8 * x1 * y1^2 * z1)
-  var x3 = w.square().subtract(x1.shiftLeft(3).multiply(y1sqz1)).shiftLeft(1).multiply(y1z1).mod(this.curve.p)
-  // y3 = 4 * y1^2 * z1 * (3 * w * x1 - 2 * y1^2 * z1) - w^3
-  var y3 = w.multiply(THREE).multiply(x1).subtract(y1sqz1.shiftLeft(1)).shiftLeft(2).multiply(y1sqz1).subtract(w.pow(3)).mod(this.curve.p)
-  // z3 = 8 * (y1 * z1)^3
-  var z3 = y1z1.pow(3).shiftLeft(3).mod(this.curve.p)
+function zero2(word) {
+  if (word.length === 1)
+    return '0' + word;
+  else
+    return word;
+}
+utils.zero2 = zero2;
 
-  return new Point(this.curve, x3, y3, z3)
+function zero8(word) {
+  if (word.length === 7)
+    return '0' + word;
+  else if (word.length === 6)
+    return '00' + word;
+  else if (word.length === 5)
+    return '000' + word;
+  else if (word.length === 4)
+    return '0000' + word;
+  else if (word.length === 3)
+    return '00000' + word;
+  else if (word.length === 2)
+    return '000000' + word;
+  else if (word.length === 1)
+    return '0000000' + word;
+  else
+    return word;
 }
+utils.zero8 = zero8;
 
-// Simple NAF (Non-Adjacent Form) multiplication algorithm
-// TODO: modularize the multiplication algorithm
-Point.prototype.multiply = function (k) {
-  if (this.curve.isInfinity(this)) return this
-  if (k.signum() === 0) return this.curve.infinity
+function join32(msg, start, end, endian) {
+  var len = end - start;
+  assert(len % 4 === 0);
+  var res = new Array(len / 4);
+  for (var i = 0, k = start; i < res.length; i++, k += 4) {
+    var w;
+    if (endian === 'big')
+      w = (msg[k] << 24) | (msg[k + 1] << 16) | (msg[k + 2] << 8) | msg[k + 3];
+    else
+      w = (msg[k + 3] << 24) | (msg[k + 2] << 16) | (msg[k + 1] << 8) | msg[k];
+    res[i] = w >>> 0;
+  }
+  return res;
+}
+utils.join32 = join32;
 
-  var e = k
-  var h = e.multiply(THREE)
+function split32(msg, endian) {
+  var res = new Array(msg.length * 4);
+  for (var i = 0, k = 0; i < msg.length; i++, k += 4) {
+    var m = msg[i];
+    if (endian === 'big') {
+      res[k] = m >>> 24;
+      res[k + 1] = (m >>> 16) & 0xff;
+      res[k + 2] = (m >>> 8) & 0xff;
+      res[k + 3] = m & 0xff;
+    } else {
+      res[k + 3] = m >>> 24;
+      res[k + 2] = (m >>> 16) & 0xff;
+      res[k + 1] = (m >>> 8) & 0xff;
+      res[k] = m & 0xff;
+    }
+  }
+  return res;
+}
+utils.split32 = split32;
 
-  var neg = this.negate()
-  var R = this
+function rotr32(w, b) {
+  return (w >>> b) | (w << (32 - b));
+}
+utils.rotr32 = rotr32;
 
-  for (var i = h.bitLength() - 2; i > 0; --i) {
-    var hBit = h.testBit(i)
-    var eBit = e.testBit(i)
+function rotl32(w, b) {
+  return (w << b) | (w >>> (32 - b));
+}
+utils.rotl32 = rotl32;
 
-    R = R.twice()
+function sum32(a, b) {
+  return (a + b) >>> 0;
+}
+utils.sum32 = sum32;
 
-    if (hBit !== eBit) {
-      R = R.add(hBit ? this : neg)
-    }
-  }
+function sum32_3(a, b, c) {
+  return (a + b + c) >>> 0;
+}
+utils.sum32_3 = sum32_3;
 
-  return R
+function sum32_4(a, b, c, d) {
+  return (a + b + c + d) >>> 0;
 }
+utils.sum32_4 = sum32_4;
 
-// Compute this*j + x*k (simultaneous multiplication)
-Point.prototype.multiplyTwo = function (j, x, k) {
-  var i = Math.max(j.bitLength(), k.bitLength()) - 1
-  var R = this.curve.infinity
-  var both = this.add(x)
+function sum32_5(a, b, c, d, e) {
+  return (a + b + c + d + e) >>> 0;
+}
+utils.sum32_5 = sum32_5;
 
-  while (i >= 0) {
-    var jBit = j.testBit(i)
-    var kBit = k.testBit(i)
+function assert(cond, msg) {
+  if (!cond)
+    throw new Error(msg || 'Assertion failed');
+}
+utils.assert = assert;
 
-    R = R.twice()
+utils.inherits = inherits;
 
-    if (jBit) {
-      if (kBit) {
-        R = R.add(both)
-      } else {
-        R = R.add(this)
-      }
-    } else if (kBit) {
-      R = R.add(x)
-    }
-    --i
-  }
+function sum64(buf, pos, ah, al) {
+  var bh = buf[pos];
+  var bl = buf[pos + 1];
 
-  return R
+  var lo = (al + bl) >>> 0;
+  var hi = (lo < al ? 1 : 0) + ah + bh;
+  buf[pos] = hi >>> 0;
+  buf[pos + 1] = lo;
 }
+exports.sum64 = sum64;
 
-Point.prototype.getEncoded = function (compressed) {
-  if (compressed == null) compressed = this.compressed
-  if (this.curve.isInfinity(this)) return new Buffer('00', 'hex') // Infinity point encoded is simply '00'
-
-  var x = this.affineX
-  var y = this.affineY
-  var byteLength = this.curve.pLength
-  var buffer
+function sum64_hi(ah, al, bh, bl) {
+  var lo = (al + bl) >>> 0;
+  var hi = (lo < al ? 1 : 0) + ah + bh;
+  return hi >>> 0;
+};
+exports.sum64_hi = sum64_hi;
 
-  // 0x02/0x03 | X
-  if (compressed) {
-    buffer = new Buffer(1 + byteLength)
-    buffer.writeUInt8(y.isEven() ? 0x02 : 0x03, 0)
+function sum64_lo(ah, al, bh, bl) {
+  var lo = al + bl;
+  return lo >>> 0;
+};
+exports.sum64_lo = sum64_lo;
 
-  // 0x04 | X | Y
-  } else {
-    buffer = new Buffer(1 + byteLength + byteLength)
-    buffer.writeUInt8(0x04, 0)
+function sum64_4_hi(ah, al, bh, bl, ch, cl, dh, dl) {
+  var carry = 0;
+  var lo = al;
+  lo = (lo + bl) >>> 0;
+  carry += lo < al ? 1 : 0;
+  lo = (lo + cl) >>> 0;
+  carry += lo < cl ? 1 : 0;
+  lo = (lo + dl) >>> 0;
+  carry += lo < dl ? 1 : 0;
 
-    y.toBuffer(byteLength).copy(buffer, 1 + byteLength)
-  }
+  var hi = ah + bh + ch + dh + carry;
+  return hi >>> 0;
+};
+exports.sum64_4_hi = sum64_4_hi;
 
-  x.toBuffer(byteLength).copy(buffer, 1)
+function sum64_4_lo(ah, al, bh, bl, ch, cl, dh, dl) {
+  var lo = al + bl + cl + dl;
+  return lo >>> 0;
+};
+exports.sum64_4_lo = sum64_4_lo;
 
-  return buffer
-}
+function sum64_5_hi(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
+  var carry = 0;
+  var lo = al;
+  lo = (lo + bl) >>> 0;
+  carry += lo < al ? 1 : 0;
+  lo = (lo + cl) >>> 0;
+  carry += lo < cl ? 1 : 0;
+  lo = (lo + dl) >>> 0;
+  carry += lo < dl ? 1 : 0;
+  lo = (lo + el) >>> 0;
+  carry += lo < el ? 1 : 0;
 
-Point.decodeFrom = function (curve, buffer) {
-  var type = buffer.readUInt8(0)
-  var compressed = (type !== 4)
+  var hi = ah + bh + ch + dh + eh + carry;
+  return hi >>> 0;
+};
+exports.sum64_5_hi = sum64_5_hi;
 
-  var byteLength = Math.floor((curve.p.bitLength() + 7) / 8)
-  var x = BigInteger.fromBuffer(buffer.slice(1, 1 + byteLength))
+function sum64_5_lo(ah, al, bh, bl, ch, cl, dh, dl, eh, el) {
+  var lo = al + bl + cl + dl + el;
 
-  var Q
-  if (compressed) {
-    assert.equal(buffer.length, byteLength + 1, 'Invalid sequence length')
-    assert(type === 0x02 || type === 0x03, 'Invalid sequence tag')
+  return lo >>> 0;
+};
+exports.sum64_5_lo = sum64_5_lo;
 
-    var isOdd = (type === 0x03)
-    Q = curve.pointFromX(isOdd, x)
-  } else {
-    assert.equal(buffer.length, 1 + byteLength + byteLength, 'Invalid sequence length')
+function rotr64_hi(ah, al, num) {
+  var r = (al << (32 - num)) | (ah >>> num);
+  return r >>> 0;
+};
+exports.rotr64_hi = rotr64_hi;
 
-    var y = BigInteger.fromBuffer(buffer.slice(1 + byteLength))
-    Q = Point.fromAffine(curve, x, y)
-  }
+function rotr64_lo(ah, al, num) {
+  var r = (ah << (32 - num)) | (al >>> num);
+  return r >>> 0;
+};
+exports.rotr64_lo = rotr64_lo;
 
-  Q.compressed = compressed
-  return Q
-}
+function shr64_hi(ah, al, num) {
+  return ah >>> num;
+};
+exports.shr64_hi = shr64_hi;
 
-Point.prototype.toString = function () {
-  if (this.curve.isInfinity(this)) return '(INFINITY)'
+function shr64_lo(ah, al, num) {
+  var r = (ah << (32 - num)) | (al >>> num);
+  return r >>> 0;
+};
+exports.shr64_lo = shr64_lo;
 
-  return '(' + this.affineX.toString() + ',' + this.affineY.toString() + ')'
-}
+},{"inherits":121}],120:[function(require,module,exports){
+'use strict';
 
-module.exports = Point
+var hash = require('hash.js');
+var utils = require('minimalistic-crypto-utils');
+var assert = require('minimalistic-assert');
 
-}).call(this,require("buffer").Buffer)
-},{"assert":1,"bigi":37,"buffer":4}],92:[function(require,module,exports){
-(function (Buffer){
-'use strict'
-var Transform = require('stream').Transform
-var inherits = require('inherits')
+function HmacDRBG(options) {
+  if (!(this instanceof HmacDRBG))
+    return new HmacDRBG(options);
+  this.hash = options.hash;
+  this.predResist = !!options.predResist;
 
-function HashBase (blockSize) {
-  Transform.call(this)
+  this.outLen = this.hash.outSize;
+  this.minEntropy = options.minEntropy || this.hash.hmacStrength;
 
-  this._block = new Buffer(blockSize)
-  this._blockSize = blockSize
-  this._blockOffset = 0
-  this._length = [0, 0, 0, 0]
+  this._reseed = null;
+  this.reseedInterval = null;
+  this.K = null;
+  this.V = null;
 
-  this._finalized = false
+  var entropy = utils.toArray(options.entropy, options.entropyEnc || 'hex');
+  var nonce = utils.toArray(options.nonce, options.nonceEnc || 'hex');
+  var pers = utils.toArray(options.pers, options.persEnc || 'hex');
+  assert(entropy.length >= (this.minEntropy / 8),
+         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
+  this._init(entropy, nonce, pers);
 }
+module.exports = HmacDRBG;
 
-inherits(HashBase, Transform)
+HmacDRBG.prototype._init = function init(entropy, nonce, pers) {
+  var seed = entropy.concat(nonce).concat(pers);
 
-HashBase.prototype._transform = function (chunk, encoding, callback) {
-  var error = null
-  try {
-    if (encoding !== 'buffer') chunk = new Buffer(chunk, encoding)
-    this.update(chunk)
-  } catch (err) {
-    error = err
+  this.K = new Array(this.outLen / 8);
+  this.V = new Array(this.outLen / 8);
+  for (var i = 0; i < this.V.length; i++) {
+    this.K[i] = 0x00;
+    this.V[i] = 0x01;
   }
 
-  callback(error)
-}
+  this._update(seed);
+  this._reseed = 1;
+  this.reseedInterval = 0x1000000000000;  // 2^48
+};
 
-HashBase.prototype._flush = function (callback) {
-  var error = null
-  try {
-    this.push(this._digest())
-  } catch (err) {
-    error = err
-  }
+HmacDRBG.prototype._hmac = function hmac() {
+  return new hash.hmac(this.hash, this.K);
+};
 
-  callback(error)
-}
+HmacDRBG.prototype._update = function update(seed) {
+  var kmac = this._hmac()
+                 .update(this.V)
+                 .update([ 0x00 ]);
+  if (seed)
+    kmac = kmac.update(seed);
+  this.K = kmac.digest();
+  this.V = this._hmac().update(this.V).digest();
+  if (!seed)
+    return;
 
-HashBase.prototype.update = function (data, encoding) {
-  if (!Buffer.isBuffer(data) && typeof data !== 'string') throw new TypeError('Data must be a string or a buffer')
-  if (this._finalized) throw new Error('Digest already called')
-  if (!Buffer.isBuffer(data)) data = new Buffer(data, encoding || 'binary')
+  this.K = this._hmac()
+               .update(this.V)
+               .update([ 0x01 ])
+               .update(seed)
+               .digest();
+  this.V = this._hmac().update(this.V).digest();
+};
 
-  // consume data
-  var block = this._block
-  var offset = 0
-  while (this._blockOffset + data.length - offset >= this._blockSize) {
-    for (var i = this._blockOffset; i < this._blockSize;) block[i++] = data[offset++]
-    this._update()
-    this._blockOffset = 0
+HmacDRBG.prototype.reseed = function reseed(entropy, entropyEnc, add, addEnc) {
+  // Optional entropy enc
+  if (typeof entropyEnc !== 'string') {
+    addEnc = add;
+    add = entropyEnc;
+    entropyEnc = null;
   }
-  while (offset < data.length) block[this._blockOffset++] = data[offset++]
 
-  // update length
-  for (var j = 0, carry = data.length * 8; carry > 0; ++j) {
-    this._length[j] += carry
-    carry = (this._length[j] / 0x0100000000) | 0
-    if (carry > 0) this._length[j] -= 0x0100000000 * carry
-  }
+  entropy = utils.toArray(entropy, entropyEnc);
+  add = utils.toArray(add, addEnc);
 
-  return this
-}
+  assert(entropy.length >= (this.minEntropy / 8),
+         'Not enough entropy. Minimum is: ' + this.minEntropy + ' bits');
 
-HashBase.prototype._update = function (data) {
-  throw new Error('_update is not implemented')
-}
+  this._update(entropy.concat(add || []));
+  this._reseed = 1;
+};
 
-HashBase.prototype.digest = function (encoding) {
-  if (this._finalized) throw new Error('Digest already called')
-  this._finalized = true
+HmacDRBG.prototype.generate = function generate(len, enc, add, addEnc) {
+  if (this._reseed > this.reseedInterval)
+    throw new Error('Reseed is required');
 
-  var digest = this._digest()
-  if (encoding !== undefined) digest = digest.toString(encoding)
-  return digest
-}
+  // Optional encoding
+  if (typeof enc !== 'string') {
+    addEnc = add;
+    add = enc;
+    enc = null;
+  }
 
-HashBase.prototype._digest = function () {
-  throw new Error('_digest is not implemented')
-}
+  // Optional additional data
+  if (add) {
+    add = utils.toArray(add, addEnc || 'hex');
+    this._update(add);
+  }
 
-module.exports = HashBase
+  var temp = [];
+  while (temp.length < len) {
+    this.V = this._hmac().update(this.V).digest();
+    temp = temp.concat(this.V);
+  }
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":4,"inherits":93,"stream":27}],93:[function(require,module,exports){
-arguments[4][8][0].apply(exports,arguments)
-},{"dup":8}],94:[function(require,module,exports){
+  var res = temp.slice(0, len);
+  this._update(add);
+  this._reseed++;
+  return utils.encode(res, enc);
+};
+
+},{"hash.js":114,"minimalistic-assert":123,"minimalistic-crypto-utils":124}],121:[function(require,module,exports){
+arguments[4][9][0].apply(exports,arguments)
+},{"dup":9}],122:[function(require,module,exports){
 (function (Buffer){
 // constant-space merkle root calculation algorithm
 module.exports = function fastRoot (values, digestFn) {
@@ -20321,7 +48784,80 @@ module.exports = function fastRoot (values, digestFn) {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":4}],95:[function(require,module,exports){
+},{"buffer":5}],123:[function(require,module,exports){
+module.exports = assert;
+
+function assert(val, msg) {
+  if (!val)
+    throw new Error(msg || 'Assertion failed');
+}
+
+assert.equal = function assertEqual(l, r, msg) {
+  if (l != r)
+    throw new Error(msg || ('Assertion failed: ' + l + ' != ' + r));
+};
+
+},{}],124:[function(require,module,exports){
+'use strict';
+
+var utils = exports;
+
+function toArray(msg, enc) {
+  if (Array.isArray(msg))
+    return msg.slice();
+  if (!msg)
+    return [];
+  var res = [];
+  if (typeof msg !== 'string') {
+    for (var i = 0; i < msg.length; i++)
+      res[i] = msg[i] | 0;
+    return res;
+  }
+  if (enc === 'hex') {
+    msg = msg.replace(/[^a-z0-9]+/ig, '');
+    if (msg.length % 2 !== 0)
+      msg = '0' + msg;
+    for (var i = 0; i < msg.length; i += 2)
+      res.push(parseInt(msg[i] + msg[i + 1], 16));
+  } else {
+    for (var i = 0; i < msg.length; i++) {
+      var c = msg.charCodeAt(i);
+      var hi = c >> 8;
+      var lo = c & 0xff;
+      if (hi)
+        res.push(hi, lo);
+      else
+        res.push(lo);
+    }
+  }
+  return res;
+}
+utils.toArray = toArray;
+
+function zero2(word) {
+  if (word.length === 1)
+    return '0' + word;
+  else
+    return word;
+}
+utils.zero2 = zero2;
+
+function toHex(msg) {
+  var res = '';
+  for (var i = 0; i < msg.length; i++)
+    res += zero2(msg[i].toString(16));
+  return res;
+}
+utils.toHex = toHex;
+
+utils.encode = function encode(arr, enc) {
+  if (enc === 'hex')
+    return toHex(arr);
+  else
+    return arr;
+};
+
+},{}],125:[function(require,module,exports){
 var OPS = require('bitcoin-ops')
 
 function encodingLength (i) {
@@ -20400,7 +48936,7 @@ module.exports = {
   decode: decode
 }
 
-},{"bitcoin-ops":40}],96:[function(require,module,exports){
+},{"bitcoin-ops":42}],126:[function(require,module,exports){
 (function (process,global){
 'use strict'
 
@@ -20442,7 +48978,7 @@ function randomBytes (size, cb) {
 }
 
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
-},{"_process":12,"safe-buffer":98}],97:[function(require,module,exports){
+},{"_process":13,"safe-buffer":128}],127:[function(require,module,exports){
 (function (Buffer){
 'use strict'
 var inherits = require('inherits')
@@ -20737,70 +49273,143 @@ function fn5 (a, b, c, d, e, m, k, s) {
 module.exports = RIPEMD160
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":4,"hash-base":92,"inherits":93}],98:[function(require,module,exports){
-arguments[4][26][0].apply(exports,arguments)
-},{"buffer":4,"dup":26}],99:[function(require,module,exports){
-(function (Buffer){
+},{"buffer":5,"hash-base":113,"inherits":121}],128:[function(require,module,exports){
+/* eslint-disable node/no-deprecated-api */
+var buffer = require('buffer')
+var Buffer = buffer.Buffer
+
+// alternative to using Object.keys for old browsers
+function copyProps (src, dst) {
+  for (var key in src) {
+    dst[key] = src[key]
+  }
+}
+if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
+  module.exports = buffer
+} else {
+  // Copy properties from require('buffer')
+  copyProps(buffer, exports)
+  exports.Buffer = SafeBuffer
+}
+
+function SafeBuffer (arg, encodingOrOffset, length) {
+  return Buffer(arg, encodingOrOffset, length)
+}
+
+// Copy static methods from Buffer
+copyProps(Buffer, SafeBuffer)
+
+SafeBuffer.from = function (arg, encodingOrOffset, length) {
+  if (typeof arg === 'number') {
+    throw new TypeError('Argument must not be a number')
+  }
+  return Buffer(arg, encodingOrOffset, length)
+}
+
+SafeBuffer.alloc = function (size, fill, encoding) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  var buf = Buffer(size)
+  if (fill !== undefined) {
+    if (typeof encoding === 'string') {
+      buf.fill(fill, encoding)
+    } else {
+      buf.fill(fill)
+    }
+  } else {
+    buf.fill(0)
+  }
+  return buf
+}
+
+SafeBuffer.allocUnsafe = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return Buffer(size)
+}
+
+SafeBuffer.allocUnsafeSlow = function (size) {
+  if (typeof size !== 'number') {
+    throw new TypeError('Argument must be a number')
+  }
+  return buffer.SlowBuffer(size)
+}
+
+},{"buffer":5}],129:[function(require,module,exports){
+var Buffer = require('safe-buffer').Buffer
+
 // prototype class for hash functions
 function Hash (blockSize, finalSize) {
-  this._block = new Buffer(blockSize)
+  this._block = Buffer.alloc(blockSize)
   this._finalSize = finalSize
   this._blockSize = blockSize
   this._len = 0
-  this._s = 0
 }
 
 Hash.prototype.update = function (data, enc) {
   if (typeof data === 'string') {
     enc = enc || 'utf8'
-    data = new Buffer(data, enc)
+    data = Buffer.from(data, enc)
   }
 
-  var l = this._len += data.length
-  var s = this._s || 0
-  var f = 0
-  var buffer = this._block
+  var block = this._block
+  var blockSize = this._blockSize
+  var length = data.length
+  var accum = this._len
 
-  while (s < l) {
-    var t = Math.min(data.length, f + this._blockSize - (s % this._blockSize))
-    var ch = (t - f)
+  for (var offset = 0; offset < length;) {
+    var assigned = accum % blockSize
+    var remainder = Math.min(length - offset, blockSize - assigned)
 
-    for (var i = 0; i < ch; i++) {
-      buffer[(s % this._blockSize) + i] = data[i + f]
+    for (var i = 0; i < remainder; i++) {
+      block[assigned + i] = data[offset + i]
     }
 
-    s += ch
-    f += ch
+    accum += remainder
+    offset += remainder
 
-    if ((s % this._blockSize) === 0) {
-      this._update(buffer)
+    if ((accum % blockSize) === 0) {
+      this._update(block)
     }
   }
-  this._s = s
 
+  this._len += length
   return this
 }
 
 Hash.prototype.digest = function (enc) {
-  // Suppose the length of the message M, in bits, is l
-  var l = this._len * 8
+  var rem = this._len % this._blockSize
 
-  // Append the bit 1 to the end of the message
-  this._block[this._len % this._blockSize] = 0x80
+  this._block[rem] = 0x80
 
-  // and then k zero bits, where k is the smallest non-negative solution to the equation (l + 1 + k) === finalSize mod blockSize
-  this._block.fill(0, this._len % this._blockSize + 1)
+  // zero (rem + 1) trailing bits, where (rem + 1) is the smallest
+  // non-negative solution to the equation (length + 1 + (rem + 1)) === finalSize mod blockSize
+  this._block.fill(0, rem + 1)
 
-  if (l % (this._blockSize * 8) >= this._finalSize * 8) {
+  if (rem >= this._finalSize) {
     this._update(this._block)
     this._block.fill(0)
   }
 
-  // to this append the block which is equal to the number l written in binary
-  // TODO: handle case where l is > Math.pow(2, 29)
-  this._block.writeInt32BE(l, this._blockSize - 4)
+  var bits = this._len * 8
 
-  var hash = this._update(this._block) || this._hash()
+  // uint32
+  if (bits <= 0xffffffff) {
+    this._block.writeUInt32BE(bits, this._blockSize - 4)
+
+  // uint64
+  } else {
+    var lowBits = bits & 0xffffffff
+    var highBits = (bits - lowBits) / 0x100000000
+
+    this._block.writeUInt32BE(highBits, this._blockSize - 8)
+    this._block.writeUInt32BE(lowBits, this._blockSize - 4)
+  }
+
+  this._update(this._block)
+  var hash = this._hash()
 
   return enc ? hash.toString(enc) : hash
 }
@@ -20811,8 +49420,7 @@ Hash.prototype._update = function () {
 
 module.exports = Hash
 
-}).call(this,require("buffer").Buffer)
-},{"buffer":4}],100:[function(require,module,exports){
+},{"safe-buffer":128}],130:[function(require,module,exports){
 var exports = module.exports = function SHA (algorithm) {
   algorithm = algorithm.toLowerCase()
 
@@ -20829,8 +49437,7 @@ exports.sha256 = require('./sha256')
 exports.sha384 = require('./sha384')
 exports.sha512 = require('./sha512')
 
-},{"./sha":101,"./sha1":102,"./sha224":103,"./sha256":104,"./sha384":105,"./sha512":106}],101:[function(require,module,exports){
-(function (Buffer){
+},{"./sha":131,"./sha1":132,"./sha224":133,"./sha256":134,"./sha384":135,"./sha512":136}],131:[function(require,module,exports){
 /*
  * A JavaScript implementation of the Secure Hash Algorithm, SHA-0, as defined
  * in FIPS PUB 180-1
@@ -20841,6 +49448,7 @@ exports.sha512 = require('./sha512')
 
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
   0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
@@ -20912,7 +49520,7 @@ Sha.prototype._update = function (M) {
 }
 
 Sha.prototype._hash = function () {
-  var H = new Buffer(20)
+  var H = Buffer.allocUnsafe(20)
 
   H.writeInt32BE(this._a | 0, 0)
   H.writeInt32BE(this._b | 0, 4)
@@ -20925,9 +49533,7 @@ Sha.prototype._hash = function () {
 
 module.exports = Sha
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"buffer":4,"inherits":93}],102:[function(require,module,exports){
-(function (Buffer){
+},{"./hash":129,"inherits":121,"safe-buffer":128}],132:[function(require,module,exports){
 /*
  * A JavaScript implementation of the Secure Hash Algorithm, SHA-1, as defined
  * in FIPS PUB 180-1
@@ -20939,6 +49545,7 @@ module.exports = Sha
 
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
   0x5a827999, 0x6ed9eba1, 0x8f1bbcdc | 0, 0xca62c1d6 | 0
@@ -21014,7 +49621,7 @@ Sha1.prototype._update = function (M) {
 }
 
 Sha1.prototype._hash = function () {
-  var H = new Buffer(20)
+  var H = Buffer.allocUnsafe(20)
 
   H.writeInt32BE(this._a | 0, 0)
   H.writeInt32BE(this._b | 0, 4)
@@ -21027,9 +49634,7 @@ Sha1.prototype._hash = function () {
 
 module.exports = Sha1
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"buffer":4,"inherits":93}],103:[function(require,module,exports){
-(function (Buffer){
+},{"./hash":129,"inherits":121,"safe-buffer":128}],133:[function(require,module,exports){
 /**
  * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
  * in FIPS 180-2
@@ -21041,6 +49646,7 @@ module.exports = Sha1
 var inherits = require('inherits')
 var Sha256 = require('./sha256')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var W = new Array(64)
 
@@ -21068,7 +49674,7 @@ Sha224.prototype.init = function () {
 }
 
 Sha224.prototype._hash = function () {
-  var H = new Buffer(28)
+  var H = Buffer.allocUnsafe(28)
 
   H.writeInt32BE(this._a, 0)
   H.writeInt32BE(this._b, 4)
@@ -21083,9 +49689,7 @@ Sha224.prototype._hash = function () {
 
 module.exports = Sha224
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"./sha256":104,"buffer":4,"inherits":93}],104:[function(require,module,exports){
-(function (Buffer){
+},{"./hash":129,"./sha256":134,"inherits":121,"safe-buffer":128}],134:[function(require,module,exports){
 /**
  * A JavaScript implementation of the Secure Hash Algorithm, SHA-256, as defined
  * in FIPS 180-2
@@ -21096,6 +49700,7 @@ module.exports = Sha224
 
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
   0x428A2F98, 0x71374491, 0xB5C0FBCF, 0xE9B5DBA5,
@@ -21205,7 +49810,7 @@ Sha256.prototype._update = function (M) {
 }
 
 Sha256.prototype._hash = function () {
-  var H = new Buffer(32)
+  var H = Buffer.allocUnsafe(32)
 
   H.writeInt32BE(this._a, 0)
   H.writeInt32BE(this._b, 4)
@@ -21221,12 +49826,11 @@ Sha256.prototype._hash = function () {
 
 module.exports = Sha256
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"buffer":4,"inherits":93}],105:[function(require,module,exports){
-(function (Buffer){
+},{"./hash":129,"inherits":121,"safe-buffer":128}],135:[function(require,module,exports){
 var inherits = require('inherits')
 var SHA512 = require('./sha512')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var W = new Array(160)
 
@@ -21262,7 +49866,7 @@ Sha384.prototype.init = function () {
 }
 
 Sha384.prototype._hash = function () {
-  var H = new Buffer(48)
+  var H = Buffer.allocUnsafe(48)
 
   function writeInt64BE (h, l, offset) {
     H.writeInt32BE(h, offset)
@@ -21281,11 +49885,10 @@ Sha384.prototype._hash = function () {
 
 module.exports = Sha384
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"./sha512":106,"buffer":4,"inherits":93}],106:[function(require,module,exports){
-(function (Buffer){
+},{"./hash":129,"./sha512":136,"inherits":121,"safe-buffer":128}],136:[function(require,module,exports){
 var inherits = require('inherits')
 var Hash = require('./hash')
+var Buffer = require('safe-buffer').Buffer
 
 var K = [
   0x428a2f98, 0xd728ae22, 0x71374491, 0x23ef65cd,
@@ -21523,7 +50126,7 @@ Sha512.prototype._update = function (M) {
 }
 
 Sha512.prototype._hash = function () {
-  var H = new Buffer(64)
+  var H = Buffer.allocUnsafe(64)
 
   function writeInt64BE (h, l, offset) {
     H.writeInt32BE(h, offset)
@@ -21544,89 +50147,9 @@ Sha512.prototype._hash = function () {
 
 module.exports = Sha512
 
-}).call(this,require("buffer").Buffer)
-},{"./hash":99,"buffer":4,"inherits":93}],107:[function(require,module,exports){
-var inherits = require('inherits')
+},{"./hash":129,"inherits":121,"safe-buffer":128}],137:[function(require,module,exports){
 var native = require('./native')
 
-function TfTypeError (type, value, valueTypeName) {
-  this.__error = Error.call(this)
-  this.__type = type
-  this.__value = value
-  this.__valueTypeName = valueTypeName
-
-  var message
-  Object.defineProperty(this, 'message', {
-    enumerable: true,
-    get: function () {
-      if (message) return message
-
-      valueTypeName = valueTypeName || getValueTypeName(value)
-      message = tfErrorString(type, value, valueTypeName)
-
-      return message
-    }
-  })
-}
-
-function TfPropertyTypeError (type, property, label, value, error, valueTypeName) {
-  this.__error = error || Error.call(this)
-  this.__label = label
-  this.__property = property
-  this.__type = type
-  this.__value = value
-  this.__valueTypeName = valueTypeName
-
-  var message
-  Object.defineProperty(this, 'message', {
-    enumerable: true,
-    get: function () {
-      if (message) return message
-      if (type) {
-        valueTypeName = valueTypeName || getValueTypeName(value)
-        message = tfPropertyErrorString(type, label, property, value, valueTypeName)
-      } else {
-        message = 'Unexpected property "' + property + '"'
-      }
-
-      return message
-    }
-  })
-}
-
-// inherit from Error, assign stack
-[TfTypeError, TfPropertyTypeError].forEach(function (tfErrorType) {
-  inherits(tfErrorType, Error)
-  Object.defineProperty(tfErrorType, 'stack', {
-    get: function () { return this.__error.stack }
-  })
-})
-
-function tfCustomError (expected, actual) {
-  return new TfTypeError(expected, {}, actual)
-}
-
-function tfSubError (e, property, label) {
-  // sub child?
-  if (e instanceof TfPropertyTypeError) {
-    property = property + '.' + e.__property
-    label = e.__label
-
-    return new TfPropertyTypeError(
-      e.__type, property, label, e.__value, e.__error, e.__valueTypeName
-    )
-  }
-
-  // child?
-  if (e instanceof TfTypeError) {
-    return new TfPropertyTypeError(
-      e.__type, property, label, e.__value, e.__error, e.__valueTypeName
-    )
-  }
-
-  return e
-}
-
 function getTypeName (fn) {
   return fn.name || fn.toString().match(/function (.*?)\s*\(/)[1]
 }
@@ -21658,6 +50181,19 @@ function tfErrorString (type, value, valueTypeName) {
     (valueJson !== '' ? ' ' + valueJson : '')
 }
 
+function TfTypeError (type, value, valueTypeName) {
+  valueTypeName = valueTypeName || getValueTypeName(value)
+  this.message = tfErrorString(type, value, valueTypeName)
+
+  Error.captureStackTrace(this, TfTypeError)
+  this.__type = type
+  this.__value = value
+  this.__valueTypeName = valueTypeName
+}
+
+TfTypeError.prototype = Object.create(Error.prototype)
+TfTypeError.prototype.constructor = TfTypeError
+
 function tfPropertyErrorString (type, label, name, value, valueTypeName) {
   var description = '" of type '
   if (label === 'key') description = '" with key type '
@@ -21665,6 +50201,49 @@ function tfPropertyErrorString (type, label, name, value, valueTypeName) {
   return tfErrorString('property "' + tfJSON(name) + description + tfJSON(type), value, valueTypeName)
 }
 
+function TfPropertyTypeError (type, property, label, value, valueTypeName) {
+  if (type) {
+    valueTypeName = valueTypeName || getValueTypeName(value)
+    this.message = tfPropertyErrorString(type, label, property, value, valueTypeName)
+  } else {
+    this.message = 'Unexpected property "' + property + '"'
+  }
+
+  Error.captureStackTrace(this, TfTypeError)
+  this.__label = label
+  this.__property = property
+  this.__type = type
+  this.__value = value
+  this.__valueTypeName = valueTypeName
+}
+
+TfPropertyTypeError.prototype = Object.create(Error.prototype)
+TfPropertyTypeError.prototype.constructor = TfTypeError
+
+function tfCustomError (expected, actual) {
+  return new TfTypeError(expected, {}, actual)
+}
+
+function tfSubError (e, property, label) {
+  // sub child?
+  if (e instanceof TfPropertyTypeError) {
+    property = property + '.' + e.__property
+
+    e = new TfPropertyTypeError(
+      e.__type, property, e.__label, e.__value, e.__valueTypeName
+    )
+
+  // child?
+  } else if (e instanceof TfTypeError) {
+    e = new TfPropertyTypeError(
+      e.__type, property, label, e.__value, e.__valueTypeName
+    )
+  }
+
+  Error.captureStackTrace(e)
+  return e
+}
+
 module.exports = {
   TfTypeError: TfTypeError,
   TfPropertyTypeError: TfPropertyTypeError,
@@ -21674,7 +50253,7 @@ module.exports = {
   getValueTypeName: getValueTypeName
 }
 
-},{"./native":110,"inherits":93}],108:[function(require,module,exports){
+},{"./native":140}],138:[function(require,module,exports){
 (function (Buffer){
 var NATIVE = require('./native')
 var ERRORS = require('./errors')
@@ -21704,6 +50283,7 @@ function _LengthN (type, length) {
 var _ArrayN = _LengthN.bind(null, NATIVE.Array)
 var _BufferN = _LengthN.bind(null, _Buffer)
 var _HexN = _LengthN.bind(null, Hex)
+var _StringN = _LengthN.bind(null, NATIVE.String)
 
 var UINT53_MAX = Math.pow(2, 53) - 1
 
@@ -21733,6 +50313,7 @@ var types = {
   Int8: Int8,
   Int16: Int16,
   Int32: Int32,
+  StringN: _StringN,
   UInt8: UInt8,
   UInt16: UInt16,
   UInt32: UInt32,
@@ -21748,7 +50329,7 @@ for (var typeName in types) {
 module.exports = types
 
 }).call(this,{"isBuffer":require("../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js")})
-},{"../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":9,"./errors":107,"./native":110}],109:[function(require,module,exports){
+},{"../../../../../.nvm/versions/node/v6.0.0/lib/node_modules/browserify/node_modules/is-buffer/index.js":10,"./errors":137,"./native":140}],139:[function(require,module,exports){
 var ERRORS = require('./errors')
 var NATIVE = require('./native')
 
@@ -21765,6 +50346,7 @@ var TYPES = {
 
     function _arrayOf (array, strict) {
       if (!NATIVE.Array(array)) return false
+      if (NATIVE.Nil(array)) return false
 
       return array.every(function (value, i) {
         try {
@@ -21795,8 +50377,8 @@ var TYPES = {
     if (propertyKeyType) propertyKeyType = compile(propertyKeyType)
 
     function _map (value, strict) {
-      if (!NATIVE.Object(value, strict)) return false
-      if (NATIVE.Nil(value, strict)) return false
+      if (!NATIVE.Object(value)) return false
+      if (NATIVE.Nil(value)) return false
 
       for (var propertyName in value) {
         try {
@@ -21898,13 +50480,17 @@ var TYPES = {
     var types = [].slice.call(arguments).map(compile)
 
     function _tuple (values, strict) {
+      if (NATIVE.Nil(values)) return false
+      if (NATIVE.Nil(values.length)) return false
+      if (strict && (values.length !== types.length)) return false
+
       return types.every(function (type, i) {
         try {
           return typeforce(type, values[i], strict)
         } catch (e) {
           throw tfSubError(e, i)
         }
-      }) && (!strict || values.length === arguments.length)
+      })
     }
     _tuple.toJSON = function () { return '(' + types.map(tfJSON).join(', ') + ')' }
 
@@ -21923,11 +50509,11 @@ var TYPES = {
 
 function compile (type) {
   if (NATIVE.String(type)) {
-    if (type[0] === '?') return TYPES.maybe(compile(type.slice(1)))
+    if (type[0] === '?') return TYPES.maybe(type.slice(1))
 
     return NATIVE[type] || TYPES.quacksLike(type)
   } else if (type && NATIVE.Object(type)) {
-    if (NATIVE.Array(type)) return TYPES.arrayOf(compile(type[0]))
+    if (NATIVE.Array(type)) return TYPES.arrayOf(type[0])
 
     return TYPES.object(type)
   } else if (NATIVE.Function(type)) {
@@ -21983,7 +50569,7 @@ typeforce.TfPropertyTypeError = TfPropertyTypeError
 
 module.exports = typeforce
 
-},{"./errors":107,"./extra":108,"./native":110}],110:[function(require,module,exports){
+},{"./errors":137,"./extra":138,"./native":140}],140:[function(require,module,exports){
 var types = {
   Array: function (value) { return value !== null && value !== undefined && value.constructor === Array },
   Boolean: function (value) { return typeof value === 'boolean' },
@@ -22006,7 +50592,7 @@ for (var typeName in types) {
 
 module.exports = types
 
-},{}],111:[function(require,module,exports){
+},{}],141:[function(require,module,exports){
 (function (Buffer){
 'use strict'
 
@@ -22099,7 +50685,7 @@ function encodingLength (number) {
 module.exports = { encode: encode, decode: decode, encodingLength: encodingLength }
 
 }).call(this,require("buffer").Buffer)
-},{"buffer":4}],112:[function(require,module,exports){
+},{"buffer":5}],142:[function(require,module,exports){
 (function (Buffer){
 var bs58check = require('bs58check')
 
@@ -22166,9 +50752,8 @@ module.exports = {
 }
 
 }).call(this,require("buffer").Buffer)
-},{"bs58check":80,"buffer":4}]},{},[33])(33)
-});
-</script>
+},{"bs58check":85,"buffer":5}]},{},[34])(34)
+});</script>
         <script>bitcoinjs.bitcoin.networks.shadow = {
   messagePrefix: 'unused',
   bip32: {
@@ -22378,6 +50963,18 @@ bitcoinjs.bitcoin.networks.myriadcoin = {
   wif: 0xb2
 };
 
+
+bitcoinjs.bitcoin.networks.onixcoin = {
+    messagePrefix: 'unused',
+    bip32: {
+      public: 0x049d7cb2,
+      private: 0x049d7878
+    },
+    pubKeyHash: 0x4B,
+    scriptHash: 0x05,
+    wif: 0x80
+};
+
 bitcoinjs.bitcoin.networks.pivx = {
   messagePrefix: 'unused',
   bip32: {
@@ -22444,38 +51041,97 @@ bitcoinjs.bitcoin.networks.bitcoinCashBitbpay = {
     wif: 0x80
 };
 
-bitcoinjs.bitcoin.networks.bitcoinBip49 = {
+bitcoinjs.bitcoin.networks.monacoin = {
+    messagePrefix: '\x18Monacoin Signed Message:\n',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4
+    },
+    pubKeyHash: 0x32,
+    scriptHash: 0x37,
+    wif: 0xb0
+};
+
+bitcoinjs.bitcoin.networks.litecoinXprv = {
+    messagePrefix: '\x19Litecoin Signed Message:\n',
+    bip32: {
+      public: 0x0488b21e,
+      private: 0x0488ade4,
+    },
+    pubKeyHash: 0x30,
+    scriptHash: 0x32,
+    wif: 0xb0
+};
+
+bitcoinjs.bitcoin.networks.komodo = {
+  messagePrefix: '\x18Komodo Signed Message:\n',
+  bip32: {
+    public: 0x0488B21E,
+    private: 0x0488ADE4
+  },
+  pubKeyHash: 0x3c,
+  scriptHash: 0x55,
+  wif: 0xbc
+};
+</script>
+        <script>(function() {
+
+// p2wpkh
+
+bitcoinjs.bitcoin.networks.bitcoin.p2wpkh = {
+    baseNetwork: "bitcoin",
     messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'bc',
     bip32: {
-      public: 0x049d7cb2,
-      private: 0x049d7878
+        public: 0x04b24746,
+        private: 0x04b2430c
+    },
+    pubKeyHash: 0x00,
+    scriptHash: 0x05,
+    wif: 0x80
+};
+
+// p2wpkh in p2sh
+
+bitcoinjs.bitcoin.networks.bitcoin.p2wpkhInP2sh = {
+    baseNetwork: "bitcoin",
+    messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'bc',
+    bip32: {
+        public: 0x049d7cb2,
+        private: 0x049d7878
     },
     pubKeyHash: 0x00,
     scriptHash: 0x05,
     wif: 0x80
 };
 
-bitcoinjs.bitcoin.networks.testnetBip49 = {
+bitcoinjs.bitcoin.networks.testnet.p2wpkhInP2sh = {
+    baseNetwork: "testnet",
     messagePrefix: '\x18Bitcoin Signed Message:\n',
+    bech32: 'tb',
     bip32: {
-      public: 0x044a5262,
-      private: 0x044a4e28
+        public: 0x044a5262,
+        private: 0x044a4e28
     },
     pubKeyHash: 0x6f,
     scriptHash: 0xc4,
     wif: 0xef
 };
 
-bitcoinjs.bitcoin.networks.litecoinBip49 = {
+bitcoinjs.bitcoin.networks.litecoin.p2wpkhInP2sh = {
+    baseNetwork: "litecoin",
     messagePrefix: '\x19Litecoin Signed Message:\n',
     bip32: {
-      public: 0x01b26ef6,
-      private: 0x01b26792
+        public: 0x01b26ef6,
+        private: 0x01b26792
     },
     pubKeyHash: 0x30,
     scriptHash: 0x32,
     wif: 0xb0
 };
+
+})();
 </script>
         <script>(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.ethUtil = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
 (function (global){
@@ -46003,7 +74659,7 @@ window.Entropy = new (function() {
     var showPubKey = true;
     var showPrivKey = true;
     var showQr = false;
-    var litecoinUseLtub = false;
+    var litecoinUseLtub = true;
 
     var entropyChangeTimeoutEvent = null;
     var phraseChangeTimeoutEvent = null;
@@ -46026,6 +74682,7 @@ window.Entropy = new (function() {
     DOM.entropyBitsPerEvent = DOM.entropyContainer.find(".bits-per-event");
     DOM.entropyWordCount = DOM.entropyContainer.find(".word-count");
     DOM.entropyBinary = DOM.entropyContainer.find(".binary");
+    DOM.entropyWordIndexes = DOM.entropyContainer.find(".word-indexes");
     DOM.entropyMnemonicLength = DOM.entropyContainer.find(".mnemonic-length");
     DOM.entropyFilterWarning = DOM.entropyContainer.find(".filter-warning");
     DOM.phrase = $(".phrase");
@@ -46041,6 +74698,8 @@ window.Entropy = new (function() {
     DOM.bip32tab = $("#bip32-tab");
     DOM.bip44tab = $("#bip44-tab");
     DOM.bip49tab = $("#bip49-tab");
+    DOM.bip84tab = $("#bip84-tab");
+    DOM.bip141tab = $("#bip141-tab");
     DOM.bip32panel = $("#bip32");
     DOM.bip44panel = $("#bip44");
     DOM.bip49panel = $("#bip49");
@@ -46061,14 +74720,27 @@ window.Entropy = new (function() {
     DOM.bip49accountXprv = $("#bip49 .account-xprv");
     DOM.bip49accountXpub = $("#bip49 .account-xpub");
     DOM.bip49change = $("#bip49 .change");
+    DOM.bip84path = $("#bip84-path");
+    DOM.bip84purpose = $("#bip84 .purpose");
+    DOM.bip84coin = $("#bip84 .coin");
+    DOM.bip84account = $("#bip84 .account");
+    DOM.bip84accountXprv = $("#bip84 .account-xprv");
+    DOM.bip84accountXpub = $("#bip84 .account-xpub");
+    DOM.bip84change = $("#bip84 .change");
+    DOM.bip141unavailable = $("#bip141 .unavailable");
+    DOM.bip141available = $("#bip141 .available");
+    DOM.bip141path = $("#bip141-path");
+    DOM.bip141semantics = $(".bip141-semantics");
     DOM.generatedStrength = $(".generate-container .strength");
     DOM.hardenedAddresses = $(".hardened-addresses");
-    DOM.useP2wpkhNestedInP2sh = $(".p2wpkh-nested-in-p2sh");
     DOM.useBitpayAddressesContainer = $(".use-bitpay-addresses-container");
     DOM.useBitpayAddresses = $(".use-bitpay-addresses");
     DOM.addresses = $(".addresses");
+    DOM.csvTab = $("#csv-tab a");
+    DOM.csv = $(".csv");
     DOM.rowsToAdd = $(".rows-to-add");
     DOM.more = $(".more");
+    DOM.moreRowsStartIndex = $(".more-rows-start-index");
     DOM.feedback = $(".feedback");
     DOM.tab = $(".derivation-type a");
     DOM.indexToggle = $(".index-toggle");
@@ -46100,13 +74772,17 @@ window.Entropy = new (function() {
         DOM.bip44change.on("input", calcForDerivationPath);
         DOM.bip49account.on("input", calcForDerivationPath);
         DOM.bip49change.on("input", calcForDerivationPath);
+        DOM.bip84account.on("input", calcForDerivationPath);
+        DOM.bip84change.on("input", calcForDerivationPath);
+        DOM.bip141path.on("input", calcForDerivationPath);
+        DOM.bip141semantics.on("change", tabChanged);
         DOM.tab.on("shown.bs.tab", tabChanged);
         DOM.hardenedAddresses.on("change", calcForDerivationPath);
-        DOM.useP2wpkhNestedInP2sh.on("change", calcForDerivationPath);
         DOM.indexToggle.on("click", toggleIndexes);
         DOM.addressToggle.on("click", toggleAddresses);
         DOM.publicKeyToggle.on("click", togglePublicKeys);
         DOM.privateKeyToggle.on("click", togglePrivateKeys);
+        DOM.csvTab.on("click", updateCsv);
         DOM.languages.on("click", languageChanged);
         DOM.useBitpayAddresses.on("change", useBitpayAddressesChange);
         setQrEvents(DOM.showQrEls);
@@ -46127,11 +74803,12 @@ window.Entropy = new (function() {
         var networkIndex = e.target.value;
         var network = networks[networkIndex];
         network.onSelect();
-        if (network.p2wpkhNestedInP2shAvailable) {
-            showP2wpkhNestedInP2shAvailable();
+        if (network.segwitAvailable) {
+            adjustNetworkForSegwit();
+            showSegwitAvailable();
         }
         else {
-            showP2wpkhNestedInP2shUnavailable();
+            showSegwitUnavailable();
         }
         if (seed != null) {
             phraseChanged();
@@ -46201,11 +74878,13 @@ window.Entropy = new (function() {
         var passphrase = DOM.passphrase.val();
         calcBip32RootKeyFromSeed(phrase, passphrase);
         calcForDerivationPath();
+        // Show the word indexes
+        showWordIndexes();
     }
 
     function tabChanged() {
         showPending();
-        adjustNetworkForBip49();
+        adjustNetworkForSegwit();
         var phrase = DOM.phrase.val();
         if (phrase != "") {
             // Calculate and display for mnemonic
@@ -46306,10 +74985,10 @@ window.Entropy = new (function() {
     function litecoinUseLtubChanged() {
         litecoinUseLtub = DOM.litecoinUseLtub.prop("checked");
         if (litecoinUseLtub) {
-            network = bitcoinjs.bitcoin.networks.litecoinLtub;
+            network = bitcoinjs.bitcoin.networks.litecoin;
         }
         else {
-            network = bitcoinjs.bitcoin.networks.litecoin;
+            network = bitcoinjs.bitcoin.networks.litecoinXprv;
         }
         phraseChanged();
     }
@@ -46318,8 +74997,8 @@ window.Entropy = new (function() {
         clearDerivedKeys();
         clearAddressesList();
         showPending();
-        // Don't show bip49 if it's selected but network doesn't support it
-        if (bip49TabSelected() && !networkHasBip49()) {
+        // Don't show segwit if it's selected but network doesn't support it
+        if (segwitSelected() && !networkHasSegwit()) {
             return;
         }
         // Get the derivation path
@@ -46333,9 +75012,12 @@ window.Entropy = new (function() {
         if (bip44TabSelected()) {
             displayBip44Info();
         }
-        if (bip49TabSelected()) {
+        else if (bip49TabSelected()) {
             displayBip49Info();
         }
+        else if (bip84TabSelected()) {
+            displayBip84Info();
+        }
         displayBip32Info();
     }
 
@@ -46402,10 +75084,20 @@ window.Entropy = new (function() {
             showValidationError(errorText);
             return;
         }
+        // get the amount of entropy to use
         var numWords = parseInt(DOM.generatedStrength.val());
         var strength = numWords / 3 * 32;
-        var words = mnemonic.generate(strength);
+        var buffer = new Uint8Array(strength / 8);
+        // create secure entropy
+        var data = crypto.getRandomValues(buffer);
+        // show the words
+        var words = mnemonic.toMnemonic(data);
         DOM.phrase.val(words);
+        // show the entropy
+        var entropyHex = uint8ArrayToHex(data);
+        DOM.entropy.val(entropyHex);
+        // ensure entropy fields are consistent with what is being displayed
+        DOM.entropyMnemonicLength.val("raw");
         return words;
     }
 
@@ -46513,7 +75205,7 @@ window.Entropy = new (function() {
             console.log("Using derivation path from BIP44 tab: " + derivationPath);
             return derivationPath;
         }
-        if (bip49TabSelected()) {
+        else if (bip49TabSelected()) {
             var purpose = parseIntNoNaN(DOM.bip49purpose.val(), 49);
             var coin = parseIntNoNaN(DOM.bip49coin.val(), 0);
             var account = parseIntNoNaN(DOM.bip49account.val(), 0);
@@ -46528,11 +75220,31 @@ window.Entropy = new (function() {
             console.log("Using derivation path from BIP49 tab: " + derivationPath);
             return derivationPath;
         }
+        else if (bip84TabSelected()) {
+            var purpose = parseIntNoNaN(DOM.bip84purpose.val(), 84);
+            var coin = parseIntNoNaN(DOM.bip84coin.val(), 0);
+            var account = parseIntNoNaN(DOM.bip84account.val(), 0);
+            var change = parseIntNoNaN(DOM.bip84change.val(), 0);
+            var path = "m/";
+            path += purpose + "'/";
+            path += coin + "'/";
+            path += account + "'/";
+            path += change;
+            DOM.bip84path.val(path);
+            var derivationPath = DOM.bip84path.val();
+            console.log("Using derivation path from BIP84 tab: " + derivationPath);
+            return derivationPath;
+        }
         else if (bip32TabSelected()) {
             var derivationPath = DOM.bip32path.val();
             console.log("Using derivation path from BIP32 tab: " + derivationPath);
             return derivationPath;
         }
+        else if (bip141TabSelected()) {
+            var derivationPath = DOM.bip141path.val();
+            console.log("Using derivation path from BIP141 tab: " + derivationPath);
+            return derivationPath;
+        }
         else {
             console.log("Unknown derivation path");
         }
@@ -46623,6 +75335,24 @@ window.Entropy = new (function() {
         DOM.bip49accountXpub.val(accountXpub);
     }
 
+    function displayBip84Info() {
+        // Get the derivation path for the account
+        var purpose = parseIntNoNaN(DOM.bip84purpose.val(), 84);
+        var coin = parseIntNoNaN(DOM.bip84coin.val(), 0);
+        var account = parseIntNoNaN(DOM.bip84account.val(), 0);
+        var path = "m/";
+        path += purpose + "'/";
+        path += coin + "'/";
+        path += account + "'/";
+        // Calculate the account extended keys
+        var accountExtendedKey = calcBip32ExtendedKey(path);
+        var accountXprv = accountExtendedKey.toBase58();
+        var accountXpub = accountExtendedKey.neutered().toBase58();
+        // Display the extended keys
+        DOM.bip84accountXprv.val(accountXprv);
+        DOM.bip84accountXpub.val(accountXpub);
+    }
+
     function displayBip32Info() {
         // Display the key
         DOM.seed.val(seed);
@@ -46662,8 +75392,18 @@ window.Entropy = new (function() {
         })());
     }
 
-    function P2wpkhNestedInP2shSelected() {
-        return bip49TabSelected() || (bip32TabSelected() && useP2wpkhNestedInP2sh());
+    function segwitSelected() {
+        return bip49TabSelected() || bip84TabSelected() || bip141TabSelected();
+    }
+
+    function p2wpkhSelected() {
+        return bip84TabSelected() ||
+                bip141TabSelected() && DOM.bip141semantics.val() == "p2wpkh";
+    }
+
+    function p2wpkhInP2shSelected() {
+        return bip49TabSelected() ||
+            (bip141TabSelected() && DOM.bip141semantics.val() == "p2wpkh-p2sh");
     }
 
     function TableRow(index, isLast) {
@@ -46671,8 +75411,10 @@ window.Entropy = new (function() {
         var self = this;
         this.shouldGenerate = true;
         var useHardenedAddresses = DOM.hardenedAddresses.prop("checked");
-        var isP2wpkhNestedInP2sh = P2wpkhNestedInP2shSelected();
-        var p2wpkhNestedInP2shAvailable = networkHasBip49();
+        var isSegwit = segwitSelected();
+        var segwitAvailable = networkHasSegwit();
+        var isP2wpkh = p2wpkhSelected();
+        var isP2wpkhInP2sh = p2wpkhInP2shSelected();
 
         function init() {
             calculateValues();
@@ -46716,20 +75458,28 @@ window.Entropy = new (function() {
                     privkey = convertRipplePriv(privkey);
                     address = convertRippleAdrr(address);
                 }
-                // BIP49 addresses are different
-                if (isP2wpkhNestedInP2sh) {
-                    if (!p2wpkhNestedInP2shAvailable) {
+                // Segwit addresses are different
+                if (isSegwit) {
+                    if (!segwitAvailable) {
                         return;
                     }
-                    var keyhash = bitcoinjs.bitcoin.crypto.hash160(key.getPublicKeyBuffer());
-                    var scriptsig = bitcoinjs.bitcoin.script.witnessPubKeyHash.output.encode(keyhash);
-                    var addressbytes = bitcoinjs.bitcoin.crypto.hash160(scriptsig);
-                    var scriptpubkey = bitcoinjs.bitcoin.script.scriptHash.output.encode(addressbytes);
-                    address = bitcoinjs.bitcoin.address.fromOutputScript(scriptpubkey, network)
+                    if (isP2wpkh) {
+                        var keyhash = bitcoinjs.bitcoin.crypto.hash160(key.getPublicKeyBuffer());
+                        var scriptpubkey = bitcoinjs.bitcoin.script.witnessPubKeyHash.output.encode(keyhash);
+                        address = bitcoinjs.bitcoin.address.fromOutputScript(scriptpubkey, network)
+                    }
+                    else if (isP2wpkhInP2sh) {
+                        var keyhash = bitcoinjs.bitcoin.crypto.hash160(key.getPublicKeyBuffer());
+                        var scriptsig = bitcoinjs.bitcoin.script.witnessPubKeyHash.output.encode(keyhash);
+                        var addressbytes = bitcoinjs.bitcoin.crypto.hash160(scriptsig);
+                        var scriptpubkey = bitcoinjs.bitcoin.script.scriptHash.output.encode(addressbytes);
+                        address = bitcoinjs.bitcoin.address.fromOutputScript(scriptpubkey, network)
+                    }
                 }
                 addAddressToList(indexText, address, pubkey, privkey);
                 if (isLast) {
                     hidePending();
+                    updateCsv();
                 }
             }, 50)
         }
@@ -46739,12 +75489,19 @@ window.Entropy = new (function() {
     }
 
     function showMore() {
-        var start = DOM.addresses.children().length;
         var rowsToAdd = parseInt(DOM.rowsToAdd.val());
         if (isNaN(rowsToAdd)) {
             rowsToAdd = 20;
             DOM.rowsToAdd.val("20");
         }
+        var start = parseInt(DOM.moreRowsStartIndex.val())
+        if (isNaN(start)) {
+            start = lastIndexInTable() + 1;
+        }
+        else {
+            var newStart = start + rowsToAdd;
+            DOM.moreRowsStartIndex.val(newStart);
+        }
         if (rowsToAdd > 200) {
             var msg = "Generating " + rowsToAdd + " rows could take a while. ";
             msg += "Do you want to continue?";
@@ -46763,6 +75520,7 @@ window.Entropy = new (function() {
 
     function clearAddressesList() {
         DOM.addresses.empty();
+        DOM.csv.val("");
         stopGenerating();
     }
 
@@ -47055,6 +75813,8 @@ window.Entropy = new (function() {
         var phrase = mnemonic.toMnemonic(entropyArr);
         // Set the mnemonic in the UI
         DOM.phrase.val(phrase);
+        // Show the word indexes
+        showWordIndexes();
     }
 
     function clearEntropyFeedback() {
@@ -47177,8 +75937,13 @@ window.Entropy = new (function() {
     function createQr(e) {
         var content = e.target.textContent || e.target.value;
         if (content) {
-            var size = 130;
-            DOM.qrImage.qrcode({width: size, height: size, text: content});
+            var qrEl = kjua({
+                text: content,
+                render: "canvas",
+                size: 310,
+                ecLevel: 'H',
+            });
+            DOM.qrImage.append(qrEl);
             if (!showQr) {
                 DOM.qrHider.addClass("hidden");
             }
@@ -47208,34 +75973,40 @@ window.Entropy = new (function() {
         return DOM.bip32tab.hasClass("active");
     }
 
-    function useP2wpkhNestedInP2sh() {
-        return DOM.useP2wpkhNestedInP2sh.prop("checked");
-    }
-
-    function networkHasBip49() {
-        return networks[DOM.network.val()].p2wpkhNestedInP2shAvailable;
+    function networkHasSegwit() {
+        return networks[DOM.network.val()].segwitAvailable;
     }
 
     function bip49TabSelected() {
         return DOM.bip49tab.hasClass("active");
     }
 
+    function bip84TabSelected() {
+        return DOM.bip84tab.hasClass("active");
+    }
+
+    function bip141TabSelected() {
+        return DOM.bip141tab.hasClass("active");
+    }
+
     function setHdCoin(coinValue) {
         DOM.bip44coin.val(coinValue);
         DOM.bip49coin.val(coinValue);
+        DOM.bip84coin.val(coinValue);
     }
 
-    function showP2wpkhNestedInP2shAvailable() {
+    function showSegwitAvailable() {
         DOM.bip49unavailable.addClass("hidden");
         DOM.bip49available.removeClass("hidden");
-        DOM.useP2wpkhNestedInP2sh.prop("disabled", false);
+        DOM.bip141unavailable.addClass("hidden");
+        DOM.bip141available.removeClass("hidden");
     }
 
-    function showP2wpkhNestedInP2shUnavailable() {
+    function showSegwitUnavailable() {
         DOM.bip49available.addClass("hidden");
         DOM.bip49unavailable.removeClass("hidden");
-        DOM.useP2wpkhNestedInP2sh.prop("disabled", true);
-        DOM.useP2wpkhNestedInP2sh.prop("checked", false);
+        DOM.bip141available.addClass("hidden");
+        DOM.bip141unavailable.removeClass("hidden");
     }
 
     function useBitpayAddresses() {
@@ -47251,39 +76022,84 @@ window.Entropy = new (function() {
         }
     }
 
-    function adjustNetworkForBip49() {
-        // If bip49 is selected the xpub/xprv prefixes need to be adjusted
+    function adjustNetworkForSegwit() {
+        // If segwit is selected the xpub/xprv prefixes need to be adjusted
         // to avoid accidentally importing BIP49 xpub to BIP44 watch only
         // wallet.
         // See https://github.com/iancoleman/bip39/issues/125
-        if (P2wpkhNestedInP2shSelected()) {
-            if (network == bitcoinjs.bitcoin.networks.bitcoin) {
-                network = bitcoinjs.bitcoin.networks.bitcoinBip49;
-            }
-            else if (network == bitcoinjs.bitcoin.networks.testnet) {
-                network = bitcoinjs.bitcoin.networks.testnetBip49;
-            }
-            else if (network == bitcoinjs.bitcoin.networks.litecoin) {
-                network = bitcoinjs.bitcoin.networks.litecoinBip49;
-            }
+        var segwitNetworks = null;
+        // if a segwit network is alread selected, need to use base network to
+        // look up new parameters
+        if ("baseNetwork" in network) {
+            network = bitcoinjs.bitcoin.networks[network.baseNetwork];
         }
-        else {
-            if (network == bitcoinjs.bitcoin.networks.bitcoinBip49) {
-                network = bitcoinjs.bitcoin.networks.bitcoin;
-            }
-            else if (network == bitcoinjs.bitcoin.networks.testnetBip49) {
-                network = bitcoinjs.bitcoin.networks.testnet;
+        // choose the right segwit params
+        if (p2wpkhSelected() && "p2wpkh" in network) {
+            network = network.p2wpkh;
+        }
+        else if (p2wpkhInP2shSelected() && "p2wpkhInP2sh" in network) {
+            network = network.p2wpkhInP2sh;
+        }
+    }
+
+    function lastIndexInTable() {
+        var pathText = DOM.addresses.find(".index").last().text();
+        var pathBits = pathText.split("/");
+        var lastBit = pathBits[pathBits.length-1];
+        var lastBitClean = lastBit.replace("'", "");
+        return parseInt(lastBitClean);
+    }
+
+    function uint8ArrayToHex(a) {
+        var s = ""
+        for (var i=0; i<a.length; i++) {
+            var h = a[i].toString(16);
+            while (h.length < 2) {
+                h = "0" + h;
             }
-            else if (network == bitcoinjs.bitcoin.networks.litecoinBip49) {
-                network = bitcoinjs.bitcoin.networks.litecoin;
+            s = s + h;
+        }
+        return s;
+    }
+
+    function showWordIndexes() {
+        var phrase = DOM.phrase.val();
+        var words = phraseToWordArray(phrase);
+        var wordIndexes = [];
+        var language = getLanguage();
+        for (var i=0; i<words.length; i++) {
+            var word = words[i];
+            var wordIndex = WORDLISTS[language].indexOf(word);
+            wordIndexes.push(wordIndex);
+        }
+        var wordIndexesStr = wordIndexes.join(", ");
+        DOM.entropyWordIndexes.text(wordIndexesStr);
+    }
+
+    function updateCsv() {
+        var tableCsv = "path,address,public key,private key\n";
+        var rows = DOM.addresses.find("tr");
+        for (var i=0; i<rows.length; i++) {
+            var row = $(rows[i]);
+            var cells = row.find("td");
+            for (var j=0; j<cells.length; j++) {
+                var cell = $(cells[j]);
+                if (!cell.children().hasClass("invisible")) {
+                    tableCsv = tableCsv + cell.text();
+                }
+                if (j != cells.length - 1) {
+                    tableCsv = tableCsv + ",";
+                }
             }
+            tableCsv = tableCsv + "\n";
         }
+        DOM.csv.val(tableCsv);
     }
 
     var networks = [
         {
             name: "BCH - Bitcoin Cash",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 DOM.useBitpayAddressesContainer.removeClass("hidden");
                 setBitcoinCashNetworkValues();
@@ -47292,7 +76108,7 @@ window.Entropy = new (function() {
         },
         {
             name: "BTC - Bitcoin",
-            p2wpkhNestedInP2shAvailable: true,
+            segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.bitcoin;
                 setHdCoin(0);
@@ -47300,7 +76116,7 @@ window.Entropy = new (function() {
         },
         {
             name: "BTC - Bitcoin Testnet",
-            p2wpkhNestedInP2shAvailable: true,
+            segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.testnet;
                 setHdCoin(1);
@@ -47308,7 +76124,7 @@ window.Entropy = new (function() {
         },
         {
             name: "BTG - Bitcoin Gold",
-            p2wpkhNestedInP2shAvailable: true,
+            segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.bgold;
                 setHdCoin(0);
@@ -47316,7 +76132,7 @@ window.Entropy = new (function() {
         },
         {
             name: "CLAM - Clams",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.clam;
                 setHdCoin(23);
@@ -47324,7 +76140,7 @@ window.Entropy = new (function() {
         },
         {
             name: "CRW - Crown",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.crown;
                 setHdCoin(72);
@@ -47332,7 +76148,7 @@ window.Entropy = new (function() {
         },
         {
             name: "DASH - Dash",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.dash;
                 setHdCoin(5);
@@ -47340,7 +76156,7 @@ window.Entropy = new (function() {
         },
         {
             name: "DASH - Dash Testnet",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.dashtn;
                 setHdCoin(1);
@@ -47348,7 +76164,7 @@ window.Entropy = new (function() {
         },
         {
             name: "DOGE - Dogecoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.dogecoin;
                 setHdCoin(3);
@@ -47356,7 +76172,7 @@ window.Entropy = new (function() {
         },
         {
             name: "ETH - Ethereum",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.bitcoin;
                 setHdCoin(60);
@@ -47364,7 +76180,7 @@ window.Entropy = new (function() {
         },
         {
             name: "FJC - Fujicoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.fujicoin;
                 setHdCoin(75);
@@ -47372,7 +76188,7 @@ window.Entropy = new (function() {
         },
         {
             name: "GAME - GameCredits",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.game;
                 setHdCoin(101);
@@ -47380,15 +76196,23 @@ window.Entropy = new (function() {
         },
         {
             name: "JBS - Jumbucks",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.jumbucks;
                 setHdCoin(26);
             },
         },
+        {
+            name: "KMD - Komodo",
+            bip49available: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.komodo;
+                setHdCoin(141);
+            },
+        },
         {
             name: "LTC - Litecoin",
-            p2wpkhNestedInP2shAvailable: true,
+            segwitAvailable: true,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.litecoin;
                 setHdCoin(2);
@@ -47397,24 +76221,39 @@ window.Entropy = new (function() {
         },
         {
             name: "MAZA - Maza",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.maza;
                 setHdCoin(13);
             },
         },
-
+        {
+            name: "MONA - Monacoin",
+            segwitAvailable: true,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.monacoin,
+                setHdCoin(22);
+            },
+        },
         {
             name: "NMC - Namecoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.namecoin;
                 setHdCoin(7);
             },
         },
+        {
+            name: "ONX - Onixcoin",
+            segwitAvailable: false,
+            onSelect: function() {
+                network = bitcoinjs.bitcoin.networks.onixcoin;
+                setHdCoin(174);
+            },
+        },
         {
             name: "PIVX - PIVX",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.pivx;
                 setHdCoin(119);
@@ -47422,7 +76261,7 @@ window.Entropy = new (function() {
         },
         {
             name: "PIVX - PIVX Testnet",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.pivxtestnet;
                 setHdCoin(1);
@@ -47430,7 +76269,7 @@ window.Entropy = new (function() {
         },
         {
             name: "PPC - Peercoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.peercoin;
                 setHdCoin(6);
@@ -47438,7 +76277,7 @@ window.Entropy = new (function() {
         },
         {
             name: "SDC - ShadowCash",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.shadow;
                 setHdCoin(35);
@@ -47446,7 +76285,7 @@ window.Entropy = new (function() {
         },
         {
             name: "SDC - ShadowCash Testnet",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.shadowtn;
                 setHdCoin(1);
@@ -47454,7 +76293,7 @@ window.Entropy = new (function() {
         },
         {
             name: "SLM - Slimcoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.slimcoin;
                 setHdCoin(63);
@@ -47462,7 +76301,7 @@ window.Entropy = new (function() {
         },
         {
             name: "SLM - Slimcoin Testnet",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.slimcointn;
                 setHdCoin(111);
@@ -47470,7 +76309,7 @@ window.Entropy = new (function() {
         },
         {
             name: "USNBT - NuBits",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.nubits;
                 setHdCoin(12);
@@ -47478,7 +76317,7 @@ window.Entropy = new (function() {
         },
         {
             name: "VIA - Viacoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.viacoin;
                 setHdCoin(14);
@@ -47486,7 +76325,7 @@ window.Entropy = new (function() {
         },
         {
             name: "VIA - Viacoin Testnet",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.viacointestnet;
                 setHdCoin(1);
@@ -47494,7 +76333,7 @@ window.Entropy = new (function() {
         },
         {
             name: "XMY - Myriadcoin",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.myriadcoin;
                 setHdCoin(90);
@@ -47502,7 +76341,7 @@ window.Entropy = new (function() {
         },
         {
             name: "XRP - Ripple",
-            p2wpkhNestedInP2shAvailable: false,
+            segwitAvailable: false,
             onSelect: function() {
                 network = bitcoinjs.bitcoin.networks.bitcoin;
                 setHdCoin(144);