- update to 0.7.0:
* Important: Python 3.7 is the minimum supported version, due
to difficulty of testing old releases, and the fact that
everything older has been deprecated a long time ago
(e.g. 3.6 at the end of 2021).
* Improve error handling in some corner cases (not expected to
have any real-life impact, but who knows).
* Improved testing coverage and test infrastructure.
* Modernise parts of the C code based on recent Python version
* guidelines.
* Add a simple security policy and contribution guidelines.

- apply a manually merged version of
- Make test suite pass under FreeBSD, which has a stricter
behaviour with regards to invalid ACLs (which we do exercise
- No visible changes release: just fix tests when running under