Release a new version with wgpu 0.20.0 support

[9291Sam]

I noticed that an update to wgpu 0.20.0 was pushed to master earlier today, however no new release was made that can easily be downloaded via cargo.

Thanks for making this library, it's saved me a lot of headache!

[grovesNL]

I'll try to make a release soon, please use an override in your Cargo.toml or direct dependency on the newest commit rev for now if possible. I'd like to make a decision on #86 and #92 before the next release but should be able to get to that soon.

[9291Sam]

Ahh that makes sense, I figured there was a reason for it, thanks for letting me know!