* **room:** Add a hidden property for Room._parent ([b776a9c](https://github.com/ladybug-tools/honeybee-core/commit/b776a9c87afcdfc277fdbeb64fde693b85234e26))
* **model:** Add method to reset and number all object identifiers ([e1dbba1](https://github.com/ladybug-tools/honeybee-core/commit/e1dbba1d69439ea7ef439e73af270456e0b38bfd))