* Replace square in center of level with stationary ball * Improve collision demo - Collisions between balls are smoother. - Fixed an issue with collision bounds not being set properly. (This is what made the collision appear unsmooth)
* Added CircleF and RectangleF intersection method * Simplified shape implementation * Docs * Collision system uses shapes * QuadTree collision allows circles * ICollisionActor remove setter +semver: patch * Added position to IShapeF +semver: patch * Added CollisionComponent contains * Fix penetration vector between circles * Circle Rectangle penetration vector * Added test for Rectangle Rectangle Collision * Add docs, fix test