* **model:** Implement a way to preserve ContextShade heirarchy ([1ebc6ef](https://github.com/ladybug-tools/dragonfly-core/commit/1ebc6ef802225923ea030dce24491e4a8ad9fd60))
* **room2d:** Add a method to convert Room2D to core/perimeter model ([c36c773](https://github.com/ladybug-tools/dragonfly-core/commit/c36c773afb3dabbfd6e349a6732e1d6cbabe6f6d))