* **model:** Add properties for units_system and tolerance ([da4d57e](https://github.com/ladybug-tools/dragonfly-core/commit/da4d57eba5aea3dc30f28a86f745bd593bed27e1))
* **windowparameter:** Shortened class name to RectangularWindows ([1806c15](https://github.com/ladybug-tools/dragonfly-core/commit/1806c159dc7d1d19568577e944eed92c417c5cb2))