= Release v4.0.0 =

*All release tags are signed, and release packages are also signed*.
*Always check signatures prior using this software*.

== Removed ==

* Drop Python 3.8. With this change, tested support for Stackless is
  also dropped, as that project has been archived anyway.

== Added ==

* Add tested support for PyPy 3.11 in CI.

== Changed ==

* Update Poetry syntax in tasks and docs.
* Update syntax for Python 3.9+.
* Upgrade pyproject.toml syntax.