Multiple crates missing `repository` field

[paolobarbolini]

Hi! As part of our efforts to verify that crates.io releases are reproducible ^1, we have discovered that one or more crates hosted in this repo are missing the repository field ^2 in Cargo.toml.

The repository field helps users and automated tools find the link to the git repository hosting the source code. While not required by crates.io, we believe it should always be set.

We suggest that the repository field be configured for every crate published to crates.io. Thank you very much.

[damons]

Good advice. Will continue to track this.