Please publish to crates.io

[emchristiansen]

These packages seem really useful, and it would be nice if they were more easily available.

Here are the instructions for publishing to crates.io:
https://doc.rust-lang.org/cargo/reference/publishing.html

[godenzim]

Last time I checked, the packages name we use were already taken by placeholder packages on crates.io, that's why we did not publish them there. We would need to change all the package names.