[ANN] capnp-ocaml 3.4.0 and mirage/capnp-rpc 0.4.0

[Thomas Leonard]

I've recently made two new Cap'n Proto releases for OCaml:

capnp 3.4.0 (https://github.com/capnproto/capnp-ocaml/releases/tag/v3.4.0)

This fixes a bug in schema compilation for interfaces that referred to other interfaces, migrates to a newer unsigned integer library, and fixes some compiler warnings on OCaml 4.08.

capnp-rpc 0.4.0 (https://github.com/mirage/capnp-rpc/releases/tag/v0.4.0)

This adds a number of convenience functions for handling ref counting, saving and loading .cap files, and parsing command-line options. There are also a couple of breaking changes:

• The library now wraps errors with a `Capnp tag to make it easier to compose with other types of error.

• All command-line options have been prefixed with "capnp-". e.g. --listen-address is now --capnp-listen-address.
  The old names were confusing for applications that supported other protocols too (e.g. a web server).

For more information, please see the instructions and tutorial at https://github.com/mirage/capnp-rpc/blob/master/README.md.