* Added "center" style hint for block title and desc
* Added style hints for new Getting Started designs
* Fixed incorrect automatic link role for guide links
* Support for Mallard conditional language test tokens
* Added style="continues" for Mallard lists and steps
* Better handling of broken internal Mallard links
* MathML support for Mallard and DocBook
* Audio and video support for DocBook
* Ability to set poster image for video
* TTML subtitles for audio and inline media
* Updated media controls
* Fixed #hash auto-expanding and colorizing
* Translator and publisher credits
* Use quote char on :before for blockquote
* ARIA landmark roles
* Changed marker for expanders
* Switched ui:expanded to non-experimental
* Experimental Mallard UI overlays
* Dropped unused DocBook utility XSLT
* Use itstool "join mode" for translations
* More experimental thumbnail link styles
* Many translation updates
* Added support for depth attribute on section links
* Improved various bits of the build process (Colin Walters)
* Corrected jQuery.Syntax license info (Steve Magoun)
* Updated translations
