Assembly implementation of the [SHA-2] compression functions.
This crate is not intended for direct use, most users should
prefer the [`sha2`] crate with enabled `asm` feature instead.
Only x86, x86-64, and (partially) AArch64 architectures are
currently supported.
[SHA-2]: https://en.wikipedia.org/wiki/SHA-2
[`sha2`]: https://crates.io/crates/sha2