v0.3.1: moved to aedev-group, modernized project structure, and added correctness, performance, and unit tests

A  .env
M  .gitignore
M  .gitlab-ci.yml
M  .readthedocs.yaml
M  CONTRIBUTING.rst
M  LICENSE.md
M  PyCharmInspectionBugs.py
M  README.md
M  SECURITY.md
M  dev_requirements.txt
M  docs/Makefile
A  docs/build_docs.sh
M  docs/conf.py
M  docs/index.rst
M  docs/requirements.txt
A  find_index_perf.py
D  main.kv
D  main.py
A  name_is_ok.py
A  pip_outdated_cooldown.py
A  pyproject.toml
A  python_playground.py
M  requirements.txt
A  setup.py
M  tests/conftest.py
M  tests/requirements.txt
R  test_dict.py -> tests/test_dict_performance.py
M  tests/test_python_playground.py