Install PIWIK, for the moment in addition to Google Analytics
Replace the fb_models plugin with SocialMediaPrivacy
Upgrade the mediaelement code to its most recent version
Teach the server about mp4 files, fixes the display of videos on IE
More explicit list of video controls
HTML5
Patch svg.js so that it doesn't break mathjax on IE
Backwards compatibility with PHP 5.1.6
Remove google analytics, because piwik works quite well
Do not track piwik configuration with git