kabsch algorithm
kabsch algorithm implemented as outlined here. the signature of the only exported method is (set1, set2), where set1 and set2 are matrices, each column in those is (x,y,z) coordinate for a point. like this (2 points):
2 3 3 4 4 5
this set represents two points: (2, 3, 4) and (3, 4, 5).
it uses jacobi-eigenvalue internally to compute eigenvalues. check your args before invoking it!