Yes you can run Ruby in the browser if you want, but not because of this PR. Ruby-in-WASM was merged a few weeks ago. This PR rewrites the YJIT just-in-time co

Yes you can run Ruby in the browser if you want, but not because of this PR. Ruby-in-WASM was merged a few weeks ago. This PR rewrites the YJIT just-in-time compiler code from C into Rust, because the dev team likes Rust better and expects that it will make development of new features easier.