* **validate:** Add a validation check for upside down faces ([fbeef6d](https://github.com/ladybug-tools/honeybee-core/commit/fbeef6dec3bd81e96cdd7823dd1497f9e8665350))
* **shademesh:** Change method to only traingulate non planar quads ([d7c5eb2](https://github.com/ladybug-tools/honeybee-core/commit/d7c5eb2405eb0ba536b194b7831e58a5cb196383))
* **shademesh:** Trinagulate and remove degenerate from ShadeMesh ([824b569](https://github.com/ladybug-tools/honeybee-core/commit/824b5691278bdd0317ba6ca767e30b619455e874))
* **extensionutil:** Ensure that ShadeMesh extension properties are added ([b82e817](https://github.com/ladybug-tools/honeybee-core/commit/b82e8177164b27e6c076249a93ed38f0e1e7e2bd))
* **shademesh:** Add a class for ShadeMeshes in Models ([6978ebf](https://github.com/ladybug-tools/honeybee-core/commit/6978ebf4432b14f0e7e2bb4e7c63190e156fc201))