Switch to improved version of Line. getSignedDistance()
Switch to improved version of Line. getSignedDistance()

Based on the error analysis by @iconexperience outlined in #799

lehni/paper.js,byte-foundry/paper.js,lehni/paper.js,iconexperience/paper.js,iconexperience/paper.js,iconexperience/paper.js,byte-foundry/paper.js,byte-foundry/paper.js,lehni/paper.js