Crates.io dependency API doesn't list dependency "alias"

[dzbarsky]

The hmac-sha512 crate defines digest09 and digest010 features. Those map to enabling the digest 0.9.0 and digest 0.10.7 dependencies. However, that mapping only exists in the Cargo.toml for the crate, it is not reflected in the API. Would it be possible to augment the dependencies endpoint to include those alias names?

[dzbarsky]

Looks like the registry index does have the aliases, I can use that for my purposes.