* flake8 --max-line-length=88 * fixup! Format Python code with psf/black push Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
* pyupgrade --py37-plus **/*.py * fixup! Format Python code with psf/black push
* introduced shuffled_shift_cipher.py in /ciphers * made requested changes * introduced doctests, type hints removed __make_one_digit() * test_end_to_end() inserted * Make test_end_to_end() a test ;-)