v0.6.1

v0.6.1

Fixes:
 - auto-complete more than one tag
 - bookmarklet: support titles containing quotes
 - URL encode links when setting a redirector

Major changes:
 - tools: fine-grained file/directory permission checks (installation)
 - tools: check the 'stable' branch for new versions (updates)

Minor changes:
 - add OpenSearch support
 - add a Doxygen makefile target
 - cleanup: remove `json_encode()` function (built-in since PHP 5.2)
 - cleanup: introduce an `ApplicationUtils` class
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2

iQEcBAABCAAGBQJWXgSGAAoJEEem0q1BAN9ve3kH/0WB0OH7XKbtOoekwhNB+nMO
Zf7bsYEMdYk6oml/EoOjqgETEcYX/TD+weE+UERyz2CklCHcz2oMC1O1JEkOPXfQ
nqrRWo7oE30y6IZyqWiJV3vySHcRMvdjzjYSlIHIrPbtMfGNMPa/JfTvzuB3Xr8M
Y2EpNQp7VH+9SYjMsYBfn4PZBtPQMvE6uSqotxytoHhMiwGMrbku+LZ66JY9vUdN
fjSIk9K4aEsWQrj+PAOxkbJQgx8GEXKm3OLL1eARbRf1ACphpLffvyqfmKrE/c/J
nh/pCZHNZdbQ0FSDj6xCXd5/dizCx6i7FPphumf1zo7erJ9rwUD5rfUTFsdrYrs=
=65f5
-----END PGP SIGNATURE-----