rewrite!

norms are made and then written to mesh face-indexed without missing any faces
due to multiple-entry backbone points, VEq is out the window.

At first tried to write it by using previously written face and edge
definitions. These had to be redone.

Ended up with 2 sets of norms seen here; points that all have the average of
adjacent faces, and backbone to perimeter vector norms. The latter being the
case for 2 lower transparencies, with averaged smoothing on the smaller 2
hearts and the purpleP .

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