Exporting DemoEnvironment

[hasenbanck]

Hi,

I'm currently implementing a wgpu based backend crate and a winit based platform crate and would like to use the DemoApp in my simple example.

Since I need to call the ui() function on the DemoApp, I need create a DemoEnvironment struct, which is marked pub but is not exported. Could you maybe export this struct?

[emilk]

Good catch 👍

Exciting with a wgpu backend by the way! Let me know if you want further assistance.

[hasenbanck]

@emilk Things are looking good. I might take your offer for some odd resizing bugs I found, but not until I have tested it further myself more.