Warping board path length calculator

This repo is the beginnings of a tool to calculate the lengths of paths on a warping board. What's a warping board? It's a tool used by weavers to measure lengths of yarn before you thread it through a loom and weave it into cloth. If you're curious you can see a picture of one in this Instructible. One day this code might become part of a full-blown weaving tool, but right now it's just a random script you have to edit. Have fun!