…alue, not a new vector. Cross-product in 2D is not well-defined but it is changed to the 2D version stated at https://mathworld.wolfram.com/CrossProduct.html .

Add Sinus and Cosine for angle between vectors (vec2 vec3 float64 float32)
Changed implementation for Angle (vec2 vec3 float32 float64) to utilize Cosine implementation (with math.Acos).
Changed implementation for left and right winding (vec2 float32 float64)

Duplicated test file for quaternion (float32 float64)

…oat values.