Added more content to the element API.
Added new element visibility test, made sure visible state preserved in the factory methods.
Initial checkin of the first cleanup steps for the scene-pong demo
Cleanup of affine-rotation demo so the sync VRAM update could be posted to the Sifteo support boards
Added element traversal functions, next() prev() and offset() to move to neighbor elements easily.
Added new parameter to handler switchMode(), allowing the handler to do prep such as TileBuffer init.
Changed the simple-image demo to cache the image in tile buffer RAM.
Added initial doxygen configuration file
Initial cleanup of the scene-pong demo.
Revised the scene-pong demo to have a reasonable project layout.
Initial checkin of the level selector demo
Mark all objects as requiring a redraw after the loading screen disconnects.
Level selector demo, basic screen layout
Basic rendering of scrolling window section
Basic level selector scroller functionality
Implemented scroll listening functionality