Detect tag/version mismatch in CI

[mvdwetering]

Extend the CI actions to check for mismatch between tag and version in setup.py.
When a tag is made it should match the value in setup.py, if not the action should fail.

This would avoid issues as with 3.2.1 where a package with the wrong version was uploaded to PyPi which had to be deleted.

[mvdwetering]

This is implemented in the refactor_function_definitions branch and will be part of the upcoming v4.0.0 release.