Removed error in castRay

ok wat

where dis come from???
Removed small flicker error on vision
Improved CollisionHandler speed. Yay!

- Improved CollisionHandler to use division system
- Added getCollisionHandler function to map
- Removed duplicate functionality from Object
- Removed redundant old commented-out code from Vector2
Merge pull request #12 from Elyotna/master

Fork from Elytona's git