Skopi dependence in Sequential introduces a dependence on MPI4PY
I'm talking about this: https://gitlab.osti.gov/mtip/spinifel/-/blob/100959273f20f5fda54be2f97db4d2c3adbc6e08/spinifel/sequential/autocorrelation.py#L7
Maybe we should just reproduce the skp.get_random_quat
code -- as it doesn't actually need mpi4py