I improved SAT collisions.
- Able to set static objects
- If the object has a gravitatable it will affect it if it collides.
- improve performance.
Small fix on SAT module.
Added Circle to Circle collisions.
- Fixed comments
- Added static to Vector.
- Added a couple of functions to Math.
Small update:
- Now you can set the radius of the bounding circle or the dimension of the bounding box.
Merge pull request #115 from spilgames/#67-simple-SAT-based-physics-system-b

#67 simple sat based physics system b