-voronoi_utility.py:
	-working on Voronoi_polygons_spherical_surface() method to generate convenient spherical Voronoi diagram data structure:
		-current progress: generation of an edge dictionary that contains the full set of straight-line / Euclidean Voronoi edges in the system (obviously, we are eventually going to want to plot / deal with the great-circle edges, but vertices are the same)--this appears to only be part way there--many Voronoi edges are clearly not correct, while others look quite reasonable
	-moved the scipy convexhull instance creation to the __init__ method of Voronoi_Sphere_Surface class so that I do not have to recreate the instance separately in different class methods
	-working to deal with the *sign/direction* of the convex hull facet normals, which needs to be accounted for when projecting Voronoi vertices back to the sphere surface [this issue was assessed by visual inspection of test plots]
		-antipodal reflection of problematic points seems to alleviate the issue, at least in part, but also generates a lot of duplicate / degenerate Voronoi vertices [because of the artificial / co-circular test sphere data structure?!]