Stub-side reference counting

[joaomhmpereira]

No description provided.

[filipeom]

Looks good to me.

Btw, are you not following the rules of CAMLparam, CAMLlocal, and CAMLreturn from https://ocaml.org/manual/5.2/intfc.html#ss:c-simple-gc-harmony?

I think in most cases it's probably safe to omit it because we're not doing any more custom block allocations that we don't always return. But maybe you could do this in a separate PR? To prevent breaking things in the future? The overhead of doing this won't be significant

[joaomhmpereira]

I think in most cases it's probably safe to omit it because we're not doing any more custom block allocations that we don't always return. But maybe you could do this in a separate PR? To prevent breaking things in the future? The overhead of doing this won't be significant

Yes, I'll implement this in a future PR (addressed in #24)