+ GHActions: Ensure ``pip`` only if needed
+
+ This is to work around a problem in conda with Python 3.7 -
+ it brings in wrong version of ``setuptools`` incompatible with Python 3.7.
+
+Version 3.1.0.post5 (2023-07-07)
+
+ Install all Python and PyPy versions from ``conda-forge``.
+
+Version 3.1.0.post4 (2022-12-15)
+
+ Use ``conda`` to install old Python versions.
+
+Version 3.1.0.post3 (2022-12-02)
+
+ PyPy3.
+
+Version 3.1.0.post2
+
+ Python 3.11.
+
+Version 3.1.0.post1 (2021-09-24)
+
+ GitHub Actions.
+
+ Stop testing at Travis.
+
+Version 3.1.0 (2021-05-23)
+
+ Convert mimedecode.docbook to reST. Generate html/man/text
+ using Sphinx.
+
+ Replaced outdated and insecure `mktemp` with `NamedTemporaryFile`.
+
+ Python 3.8, 3.9.