Compatibility with Mercurial 6.9

Mercurial 6.9 is about to be released on PyPI. There is already a release candidate available (https://pypi.org/project/mercurial/6.9rc0/).

I noticed that hg-evolve released a new version with changes related to Mercurial 6.9: https://foss.heptapod.net/mercurial/evolve/-/blob/branch/default/CHANGELOG

I was wondering if hg-git 1.1.3 is compatible with Mercurial 6.9 but it seems to me that it is not yet tested.

If there is a compatibility issue, we will be in a situation for which

pipx install mercurial
pipx inject mercurial hg-git

leads to a broken install.

I notice that this repository is not very active these last months. @dan will you be able to spend some time on hg-git about this question? Thanks for your work on this project!