Improve Path#getArea() and #isClockwise()
Improve Path#getArea() and #isClockwise()

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