- Add t.hotkeys flag to conf.lua, which defaults to true.
- If t.hotkeys is truthy, the following hotkeys will be enabled:
- Escape: Quit the experience
- F5: Restart the experience
- Ref struct only stores refcount now and is more general.
- Proxy stores a hash of its type name instead of an enum.
- Variants store additional information instead of using a vtable.
- Remove the concept of superclasses from the API.
- Clean up some miscellaneous includes.