Correctly remove data on previous and next when there is none
Include minor MSIE6 and MSIE7 hacks in css
Allow to pass an Element to generateURL
Facebook Like button
Upgrade vendors
Make sure figcaption tag is empty when no description is given.
Prevent page scroll when pressing left or right arrow on keyboard.
Only consume keyboard events for keys we use
Improve description cross-fade.

It does not depend on the description contents (<P>-tags).
Old code only remove child tags, not content (like whitespace) which could result in non-empty contents when it should be empty.
Implement trigger for event 'elementchanged' on change of visible element
Use components for jquery, modernizr and normalize.css and fix
some styling (nav lists and background) and for newer modernizr.