little tool for building Wardley maps

round coordinates to integers in a few places

Thanks Lion Kimbro for pointing out this issue.

I still have to use floats for start/end angles of arcs. That might be a sign that I don't have the right serialization yet for them. Or that that feature needs to go.

I started out with a hazy idea of only using 8-bit ints for coordinates, but now I'm not sure how committed I am to that constraint. While the width is always 256 units, it might be nice to create long portrait drawings at some point, whose height is greater than 256 units.

Created by  Kartik K. Agaram  on July 30, 2022
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