Use the zero-epsilon when checking beginnings and ends of curves for overlaps.
Use the zero-epsilon when checking beginnings and ends of curves for overlaps.

Relates to #786 and #777

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