arch alignment & tracking upstream?

[sunnygleason]

I started on this pull request to get us closer to upstream structure, I think we're in a good place to pick it up again maybe?

#46

@Licenser, what would you think about this idea:

• in the README/Cargo.toml description/etc, we add some description of currently tracking simdjson vX.Y.Z
• we finish that arch alignment to get the raw (current) codebase close in a majority sense (of course except for the necessary rust-specific enhancements)
• we genericise/template-enable the code that was made more similar by arch alignment (reducing the size of platform-specific modules)
• this should get the core features very close to the corresponding upstream version 🎉

Very interested in your thoughts! 🥂

[Licenser]

👍 sounds good, the only thing with #46 was that we need to make sure we don't degrade performance.

[sunnygleason]

💯

[sunnygleason]

implemented by #80, #81, merged with #71