Update to latest version of Rust Nightly + Dependency Updates

[LunaticWyrm467]

Hi there!
I saw this fantastic crate and I tried to use it on the latest version of rust, only to notice that this crate failed to compile due to a few issues, such as some outdated crates failing to run.
So, I took the liberty of pushing out a pull request with the dependencies updated for you, and also I switched back to the original packed_simd crate.

This was checked and tested on rust 1.76.0-nightly.
Oh, and I added the Clone derive to a few types to allow for better compatibility with some types, so some key types could be included in wrapper structs that derive from Clone.

[velvia]

Hey @LunaticWyrm467 thank you so much. I had started working on another PR that was trying to update the build but couldn't get that one to build. Too many distractions!

I approved the build and it seems to fail, but it also seems to be trying to build on stable. Weird.
Let me pull this locally and try it out.

[velvia]

Oh, the rust-toolchain was deleted. Say would you mind updating it to 1.76.0-nightly? That's likely why the CI fails.

[LunaticWyrm467]

Yeah, I removed it in favor of a cargo version override while testing, mostly because I had issues on my end getting it to build initially. Looks like I may have forgotten to add it back, I'll do that when I get the chance!

[LunaticWyrm467]

Try that. Let me know if anything else fails.

[velvia]

Thanks @LunaticWyrm467 .... the tests seem to pass but the doctests fail. Actually they look more like compile failures than doctest failures, it's very weird.... I'll see if I have time to look into it.

https://github.com/velvia/compressed-vec/actions/runs/7142826807/job/19472246385?pr=6

[LunaticWyrm467]

Huh. strange. Well, if you need any help, let me know.

[velvia]

They are doctest errors. I'll merge and then fix later. Thanks again.

[LunaticWyrm467]

Thank you!