It's not technically statistics the same way the other properties are, and we have a separate pen for it, so remove. Goal is to turn GlyphStatistics into a pen. Also remove perimeter from interpolatable.py contour characteristics vector. Shouldn't be needed, given all the stats we already include.
This directory includes snippets that people might useful to get ideas from. The contents will come and go, don't rely on them being there or having a certain API. If you need it, copy it and modify it.
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