Publish version 0.18. Includes wgpu 0.11, lyon 0.17 and more

[mitchmindtree]

This contains the update from wgpu version 0.9 to 0.11, the new
lyon version 0.17, the release of some newly refactored nannou_*
crates and many other fixes and tweaks.

See the updated changelog for details!

In particular:

Note: As of wgpu 0.10, all nannou projects now require either:

1. The following line in their top-level cargo manifest:

   resolver = "2"

   OR
2. All packages must use the 2021 edition (or later) of Rust, e.g.

   edition = "2021"

This requirement is due to wgpu 0.10's reliance on the new version of cargo's
dependency resolver and how it unifies features. Without either of the above
amendments, you will likely run into strange upstream compilation errors. You
can read more about the cargo dependency resolver versions here:

https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions

[Woyten]

@mitchmindtree Cool! Should I keep on updating #715 then?

[mitchmindtree]

@Woyten sounds good to me, I'd love to see that working!

[Woyten]

@mitchmindtree I updated #715!