packedvec-2.0.0

[ltratt]

@ratmice I'd welcome your opinions here. On reflection I think we have no choice in this crate but to do a major semver bump, at which point updating the feature name seems worth the pain. I can be persuaded otherwise on both points though!

[ratmice]

I think it's probably the right call, I do wonder because cargo lacks a way to deprecate features,
we could roll our own deprecation:

#[cfg(feature = "bincode")]
compile_error!("the bincode feature has been deprecated in favor of the 'wincode' feature");

Sadly this comes with some downsides:

1. We'd have to add the feature back to Cargo.toml minus the dep:wincode
2. In that the feature would probably still show up in the docs.rs feature list.

But it would make for a nicer error when people just bump the version.
I'm torn on whether that is worthwhile, or whether to just remove the feature outright like you did.

[ltratt]

Because packedvec has few dependents -- and my guess is only grmtools uses the bincode dependency -- I think we can cross our fingers and hope the rename doesn't hurt anyone in practise. If it does turn out to cause other people issues, we could do a 2.0.1 where we add a feature like the above?

[ratmice]

Seems reasonable enough, but lets put a note in the CHANGES.md that the feature was renamed.

[ltratt]

Good point! Fixed in the force push.

[ltratt]

@ratmice This should now be live on crates.io.