Update readme
Add ATC
Add setup() blocks for gcanvas(1)
Cleanup
Bump version
Cleanup
Optimize out 0 distance moves

This prevents retraction from happening every
offset of a fill()
Implement context.strokeAlign
Clean up and test layering
Improve efficiency of layering by not retracting when it isn't necessary
Fix issue where certain curves didn't plunge
Restructure
- Split path into path and subpath
- Let path handle moveTo and subpaths
- Move clipperlib usage into path
- Minimize retraction in fill
- While we're at it, we get support for evenodd winding
Merge branch 'master' into gh-pages