- Added Vector2 VS2012 visualizer.
- Added "getReciprocate()" method on Vector2.
- SpriteBatch now returns both sprite-size and sprite-stride by reference rather than value.
- The PointForceController now has the ability to use both linear and non-linear force (approx inverse-sqaure law).  It also now has both a linear and angular drag feature for simulating drag friction i.e. atmosphere etc.
- Added missing method script-bindings.
- PointForceControllerToy now doesn't add objects to the controller as this is redundant.
- Set the point-force controller to defaults for the toy (for now use linear force).
- Removed commented-out code from CollisionToy.