- Format all files with black - Update tox.ini flake8 arguments to be compatible - Add black to requirements-extra.txt - Reduce ignored flake8 rules and fix a few violations
Update default INITIAL_FOLDER_IN_DIALOGS to use '/' as it is most likely available on most unsuppored platforms.
It was wrong since it was moved from qt/base. fixes #378
Andrew Senetar
Virgil Dupras