Update pylint configuration for pylint 2.0

[maringuu]

Most options were just explicitly configured as their default. To simplify the configuration everything that was unchanged is removed.

See https://pylint.pycqa.org/en/latest/user_guide/configuration/all-options.html

Also some options were deprecated and do not exists in pylint 2.0 anymore. I set the maximum line width to 120 as this is what I can comfortably read on my 27" 2k display in one half of the screen. Any opinions on line length?

[maringuu]

Ping @jstucke

[jstucke]

Any opinions on line length?

Coincidentally, that is also my preferred maximum line length. Do we need to upgrade the pre-commit hook?

[jstucke]

It seems to bionic_venv only failed because of a timeout that was set too tightly.

[jstucke]

It seems some options were changed by removing them because they were not configured with their default value:

• load-plugins
• max-args=7
• max-complexity=7
• min-public-methods=0
• max-public-methods=40

and many more. Was this intentional?

[maringuu]

I documented all options that changed in the commit messsage. All other options were explicitly set to their default value before.

Also the configuration is now done in pyproject.toml.