It leaves the installed module path alone and also avoids ending up with empty directory in the odoo clone’s
odoo/addons directory.

This is already done in docker_dev_start.
It is more compatible with installed modules.

Also update import_base_import to allow any Odoo version starting with 11.0.

[skip ci]

Newer flake8-bugbear does not bring B028 on double quotes.

With python 3.6, project does not install correctly without using a wheel build with python 3.7+