Added basic Tuple3f implementation
Body, RayCaster: Replaced complex types with float[]
Removed dependency on javax from SphereBody
Vectmathlessed ZeroBody
Removed all dependencies on javax
Removed dependency on "javax.vecmath" from the project

Complete!
Tuple3f: Cloneable paperwork
Tuple3f: Don't throw exception
NewtonRayCaster.castRay: Added intermediate layer that supports object types
Added comment referring to "javax.vecmath"
Added Intersection classes
NewtonRayCaster: Now uses Intersection classes
Tuple3f: Added length, normalize, hashCode, equals

hashCode and equals are generated by NetBeans.
Added Tuple3fTest
Added RayTest
NewtonRayCaster: Now uses IntersectionRay more

Also added a TODO comment.
NewtonRayCasterTest: Now uses 2 bodies

Added second sphere inside the original one
NewtonRayCaster: Generalized for more than one body
NewtonRayCaster: Added TODO comment

urging to improve precision of intersection detection.
Added some TODO comments