Cli-exit-tools

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2024-10-02:
- setup-pythonv5
- sigterm_handler for CLI
- graalpy 24.1 tests
- CODECOV_TOKEN
- refractor

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2023-07-14:
- add codeql badge
- move 3rd_party_stubs outside the src directory
- add pypy 3.10 tests
- add python 3.12-dev tests

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2023-07-13:
- require minimum python 3.8
- remove python 3.7 tests

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2023-07-12:
- introduce PEP517 packaging standard
- introduce pyproject.toml build-system
- remove mypy.ini
- remove pytest.ini
- remove setup.cfg
- remove setup.py
- remove .bettercodehub.yml
- remove .travis.yml
- update black config
- clean ./tests/test_cli.py

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2022-06-02: update to github actions checkoutv3 and setup-pythonv3

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2022-06-01: update github actions test matrix