Changes for this version:

• Creation and import of custom themes or translations is now supported
  • The theme editor is available in the game (3rd icon in bottom left corner) and also as it's own html file
  • The theme editor has to be handled directly with the mouse and keyboard of the PC
  • Custom themes are stored in files. The import of those files into the game is not permanent, since you can't upload to the server (and using the local storage would be confusing)
• The controller is rewritten in WebGL
  • This solved all frame drop issues for the controller
  • On the other hand the inputs do not feel as snappy as before
• Theme intro music has a little bit of reverb now (doesn't sound perfect, but it was even stranger before)
• Short special music at the end result (doesn't sound perfect, but better than nothing)
• Cube animation bug in Chrome is now fixed
• Smaller bug-fixes and code cleanup

The source code is pretty much feature complete now. But this version doesn't include any new built-in theme.