updated haxe/openfl versions, started work
animated pixel perfect collision

checkCollision will now be based on the sprite's animation manager's
current frame. If the sprite's currentSpriteSheet is null, it will fall
back to using the sprite's bitmap.

At some point, the bitmap should be removed in favour of single-frame
spritesheets so that we can remove that extra check.
added 'com.' to package (needed for android build)
touch controls
# conditionals for mouse vs. touch, joysticks
Screwed up the branch by accident. Should be fixed now