Backport stdsimd removal fix to 0.7.x

[Ciantic]

This was suggested here: #200 (comment)

I think it would be a good idea, it could fix a lot of things upstream.

Currently, only way to fix broken packages is to use this in Cargo.toml

[patch.crates-io]
ahash = { git = "https://github.com/tkaitchuck/aHash" }

It will force the ahash even if something in your upstream depends on ahash (e.g. hashbrown, looking at you)

Thanks for considering.

[tkaitchuck]

This was released in 0.7.8: #200 (comment)