#36 Custom Collision

[Android Music]

Sprite has some types of collision: none, point, bounding box and per pixel.
Suggestion: add custom collision so people can bulid their own collision shape. Custom collision shape can be much better than per pixel collision because it doesn't take much cpu power like per pixel does and it can be much better than bounding box because user will be able to make collision shapes that will fit sprite or other desired shape.
Forward thanks!