* Added subpath offset
* Enhanced offset to produce smooth curves
* Lots of outline bugfixes
* Fixed failing unit tests
* Added subpath outline
* Refactor bezier offset and outline to return Subpaths
* Fix outline bug due to smooth joining and removed reduce optimization that causes jumping approximations
* Bugfix when subpath angle is acute but doesn't intersect
* Stylistic changes per review
* Stylistic changes per review and updated doc comments
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Co-authored-by: Hannah Li <hannahli2010@gmail.com>
Co-authored-by: Keavon Chambers <keavon@keavon.com>
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