Opam release prep

[rvantonder]

Gotta get rid of the opam pin dependencies. Will try upstream some changes for future releases, otherwise we're just going to have to copy these into comby.

• hack_parallel: PR upstream
• vendored. patdiff: try upstream rvantonder/patdiff@190799e to patdiff context
• vendored. mparser: issue and PR
• vendored camlzip: low velocity, so don't know about getting the upstream changes in. Small though, so can keep a local copy https://github.com/rvantonder/camlzip/commits/zip64.
• arm support / parallel alternative #249
• 4.12 compatibility #250

Later:

• Add .mli file for better library use
• split comby-server and comby-interactive into separate opam files.

[aryx]

subscribe :)

[d4hines]

Also subscribing! +1!

[rvantonder]

Alright, comby should be available on opam soon! Most platforms and targets compile on the PR in opam-repository ocaml/opam-repository#18255

[rvantonder]

comby is now available on opam :-) There's still some work for me to do to make it more usable as a library (a straightforward .mli would be nice), and I'll try do this soon.

[aryx]

Fantastic! Yes .mli would be nice. Also, would be great if there was a way to use $XXX instead of the [:a] syntax for metavariables.

[rvantonder]

@aryx yes stay tuned :-)