winit 1.29.2 support difficulties

[monomere]

I updated winit to 1.29.2, and, because there doesn't seem to be support for it already, decided to quickly update the platform code.

Fortunately, it's all pretty smooth! Although there are a bunch of breaking changes, everything seems to work just fine except one thing: winit::event::WindowEvent::ScaleFactorChanged

The current implementation uses new_inner_size, but this field has been replaced by inner_size_writer in the new version of winit. The new inner_size_writer doesn't allow you to get the suggested inner_size (i.e. new_inner_size) for some reason... So we have to have access to the Window (for Window::inner_size()) Maybe I haven't looked hard enough, but I don't see any way to access the window from anywhere inside Platform (the optional argument in end_frame doesn't work)

My question is: is passing a window reference to handle_event the only way to do this for now?

Note: I will make a pull request when this gets resolved (or should I do it now?)