* **face:** Fix several bugs in Face3D contour methods ([7ffddda](https://github.com/ladybug-tools/ladybug-geometry/commit/7ffdddaa2d21ec4436efcbd6d555e21d369b6a4b))
* **line:** Implement more elegant solution to previous fix ([8142e8e](https://github.com/ladybug-tools/ladybug-geometry/commit/8142e8ed6533b2dfb01f5847623b7b96aba8f567))
* **face:** Implement best solution for tolerance issue ([b15efc5](https://github.com/ladybug-tools/ladybug-geometry/commit/b15efc5f54cde9b41994c64ac99378766b16f9a5))
* **poltface:** Fix tolerance issue within the Polyface3D class ([893586a](https://github.com/ladybug-tools/ladybug-geometry/commit/893586af69f05e34e0022bfce73852bc38a717b4))
* **face:** Fixed bug in Face3D plane normal ([d3548cf](https://github.com/ladybug-tools/ladybug-geometry/commit/d3548cf9abd90a318190513da4dcc06aebc4a8eb))