Scattering matrix for random orientation different from v3

[lucifer1004]

According to On the concept of random orientation in far-field electromagnetic scattering by nonspherical particles (Mishchenko and Yurkin, 2017), the scattering matrix for random orientation should have 10 independent elements (11 12 13 14 22 23 24 33 34 44), and that was what v3 did. However, in v4, only 6 elements (11 12 22 33 34 44) were given.

[dmckwski]

I can fix this. The 6 elements given are the only non-zero elements when the cluster has mirror symmetry -- which is not always the case. Thanks.