Fork of lines.love with some tweaks specific to mobile devices

bugfix: imprecision in drawing

scenario: slowly press down mouse button and drag to draw a line release mouse button

Before this commit the point would jump just a little bit on release, and points would go slightly to the left of where I expect.

Yet another thing it's hard to write an automated test for.

Created by  Kartik K. Agaram  on August 3, 2022
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