Made Vector3D immutable
Added PhysicsManager class
Preliminary Octree iteration and possible newline mayhem
Changed line endings to Unix again
Added iteration to Octree
Merged in changes from master
Git merge conflict resolution messed up BoundingBox
Fixed octree iteration
Added more of the PhysicsManager implementation
Basic Cart framework
Implemented oriented bounding boxes
Merged in physics update

Conflicts:
	src/racing/graphics/Object3D.java