Improved the category system and added hints to getBlock
Renamed undefined category
Improved variable/list reporter context menus
Improved deserializer
Fixed compare()
Implemented "New" and added loading Scratch project from URL hash
Improved menu system
Added rename/delete to variable reporter context menu
Added caching for image assets
Fixed costume pixelRatio and caching
Fixed unique names
Fixed installProject
Fixed adding new sprites
Improved thumbnail update time for cached assets