-working to assess possible reasons for the poor surface area reconstitution achieved by test_spherical_voronoi_regular_surface_area_reconstitution()
-there seem to be some coincident points at the North / South poles, which I've tried to alleviate by interactive testing in IPython, and am now readjusting the test generator set in the above unit test
-now getting > 99 % surface area reconstitution for test_spherical_voronoi_regular_surface_area_reconstitution() unit test after adjusting the input set of data on the unit sphere such that the North and South poles no longer contain densely packed rings of generators (even at visually 'moderate' packing of the pole generators there are issues reconstituting the surface area--but if they are moved well away from the poles then the results are much better); since there are plenty of points at the poles with the randomly-generated set, I can only assume that the combination of regular spacing AND high pole density is an issue, rather than either of those two phenomena in isolation.