Revert "Renamed Vector to VectorPod. Removed X/Y/Z/W(VectorPod). Turned Vector3/4/Quaternion/Matrix3x3 into classes with private data. Added .X/Y/Z/W() to Vector3/4. Doesn't Compile!"

This reverts commit ea30820f1ae3396ce347bedb265d724ab7fb36e5.
Fixed Issue #51: Implemented Vector, Vector3, Vector4, Quaternion and Matrix3x3 classes.