fromAngleToMatrix

Converts Cardan angle to rotation matrices

Takes an arbitrary amount or successive rotations and convert them into a matrix of rotation. The angles must be given in column vectors (Rots x nFrames). It returns a 3 x 3 x nFrames hypermatrix of rotation. The provided angle sequence must be in char 'xyz' where xyz is replaced by the actual axes. Note that an axis can repeat (e.g. 'xyx' is a valid sequence)