ruff it up

Add rufflintfix and ruffformat

Update copyright years

Fix readme reference from build-check

ruff format acts differently under tox ... not sure why

ruff it up (auto format)

Fix import formatting

Remove the underscore imports like _sortedlist, etc.

Lint only the src directory

Set language to 'en'

Add new checks

Fixes for local install

Use pypa GHA for publishing

Test against Python 3.12

Remove pylintrc