Initial prerelease

• All code cleaned up. Possibly a few unnecessary things still left, should be fixed by release.
• Comes preloaded with gyro widget, sample robot diagram with moving arm, encoder slider, example function button, and camera (which will need a source to be provided before it works).
• Lots of code comments.
• Lots.
• No seriously, ui.js is like 50% comment currently.
• More stuff will be added in addons.