Tdvisu

Will go to **v1.0.0** when https://github.com/VaeterchenFrost/tdvisu/milestone/3 is completed.

See [Changelog](https://github.com/VaeterchenFrost/tdvisu/blob/master/CHANGELOG.md) for current changes.

Just added new workflow.

Brand new

Working GitHub Action `python-app.yml` for tests.

With this prerelease testing the GitHub Action for: `python-publish-test.py`