No released version with recent changes

[emilazy]

Hi @meejah! Following up on magic-wormhole/magic-wormhole#534, is there any progress getting a release out with the cryptography migration and Python 3.12 fixes? From the Nixpkgs point of view we’d be happy with any of a PyPI release, a GitHub tag, or even just a statement that the current Git HEAD should be okay to ship to users as part of Magic Wormhole.