Repository has been converted to Git using fast-export
(https://github.com/frej/fast-export).
The following command has been used:
```sh
$ ../fast-export/hg-fast-export.sh -r ../hg-libervia-backend --hg-hash -M main
```
That means that previous HG hashes are annotated in the `hg` namespace.
`.hgignore` has been converted to `.gitignore`, and `_trial_temp/` has been removed as we
nowadays use `pytest` instead of `trial`.
While Mercurial is a great tool, more and more tools are only compatible with Git (e.g.,
ripgrep), and in particular `uv`, which becomes the new packaging de-facto standard in
Python. Also, many developers are more at ease with Git (even if Mercurial is actually
simpler to use).
