Since the reload logic no longer relies on any state, the relevant loop is simple enough that it feels clearest to include it in the main entry point file.
* Init reload command (lots of things not working yet)
* Add back in class line (accidentally deleted)
* Add back in key modifiers (accidentally deleted)
* Unpack tuple from changed `get_module`
* Init MainRunManager & respawn IPython shell
* Init cleanup of scenes from manager
* Restore string quotes
* Still take `self.preview` into account
* Remove left-over code from module experimentation
* Remove double window activation
* Reset scenes array in RunManager
* Move self.args None check up
* Use first available window
* Don't use constructor for RunManager
* Use self. syntax
* Init moderngl context manually
* Add some comments for failed attempts to reset scene
* Reuse existing shell (this fixed the bug 🎉)
* Remove unused code
* Remove unnecessary intermediate ReloadSceneException
* Allow users to finally exit
* Rename main_run_manager to reload_manager
* Add docstrings to `ReloadManager`
* Improve reset management in window
* Clarify why we use magic exit_raise command
* Add comment about window reuse
* Improve docstrings in ReloadManager & handle case of 0 scenes
* Set scene and title earlier
* Run linter suggestions
