Pytest-repeat

* No externally visible changes.
* Internal changes.
* Add tox and CI testing on Python 3.12
* Add legacy pytest versions to CI.
* Now testing pytest 4, 5, 6
* Non-legacy testing uses pytest 7
* setup.py -> pyproject.toml
* using hatchling backend

* Migrate CI to GitHub Actions
* Officially Support Python 3.7+

* Using ``pytest.mark.repeat(1)`` can now be used to disable repeating a test regardless of the ``--count`` parameter given in the command-line.

* Python 3.4 is no longer officially supported.

* Not released do PyPI due to a deploy problem.

* Fix mark deprecation warnings in new pytest versions.

* ``pytest-repeat`` now requires pytest>=3.6.

* Move step number to the end of the parametrisation ID

* Thanks to `gdyuldin <https://github.com/gdyuldin>`_ for suggesting
this enhancement and providing a patch