* **face:** Fix automatic normal calculation in Face3D ([bb5aaa1](https://github.com/ladybug-tools/ladybug-geometry/commit/bb5aaa1948feaafb222a102da537982647b99e32))
* **travis:** update version of node to 12 ([6049465](https://github.com/ladybug-tools/ladybug-geometry/commit/60494656b190e5eecfbd7c588e27b89344f16389))
* **polygon:** Update Polygon2D with staticmethod to perform intersection on adjacent polygons ([ac5ffa3](https://github.com/ladybug-tools/ladybug-geometry/commit/ac5ffa35b46e1607cc6edf4d5e377601c19fd9b9))