Resolve CWG-43  and CWG-42 by applying tox 4 compatability.

Closes CWG-43 and CWG-42

See merge request !14

Integrate setuptools_scm

See merge request !11

Adjust .editorconfig for python files to comply with black linting

See merge request !13

Hotfix/typo and gitignore

See merge request !10

Add .editorconfig

See merge request !9

Add minimal versions and licensing information for requirements

See merge request !7

# Conflicts:
#   tests/requirements.txt

CWG-11: linting auto format and appropriate documentation

Closes CWG-11

See merge request !6

Code coverage job and integration with gitlab CI/CD

See merge request !8

Requirements should clearly state their license as this aids
in resolving potential licensing conflicts much more easily.

In addition, these requirements should denote a minimal version
based on the features they need from these requirements.

Afterwards, these minimal versions can be extended with a
lower-constraints job which verifies that all minimal
versions results in a functional application.

Resolve CWG-11 "Features/ add tox"

Closes CWG-11

See merge request !5

Add minimal setup.py

See merge request !3

Hotfix/add docstring to greeter

See merge request !4

Make __version__ global available for all supported python versions

See merge request !1

Make black actually show what it would like to have changed

See merge request !2