* **arc:** Add to_polyline methods to the Arc classes ([249518e](https://github.com/ladybug-tools/ladybug-geometry/commit/249518e0d1092cca8c58bafa743254f610da816a))
* **polyline:** Fix minor bug in Polyline edge case ([a517ba0](https://github.com/ladybug-tools/ladybug-geometry/commit/a517ba05d9f4b688aa4d83ce4458c7df2be022d1))
* **polyline:** Add classmethods to go to/from polygon ([0e31cef](https://github.com/ladybug-tools/ladybug-geometry/commit/0e31cefb67fe9e59d8f36eac9d1e2aa94d9b1938))