Add a kmVec2Cross method
kmVec2DegreesBetween now returns a value between -180.0 and +180.0
Merge branch 'master' of github.com:Kazade/kazmath
Add a simple test for kmVec2DegreesBetween
Simplify kmMat3Transpose and make it work on the same input and output. Fix a broken test that was using double rather than kmScalar and trashing memory