Some of the available checks are disabled by default, like:
[H106] Don’t put vim configuration in source files
[H203] Use assertIs(Not)None to check for None
The gating on python 3.4 is restricted to <= Mitaka.
This is due to the change from Ubuntu Trusty to Xenial,
where only python3.5 is available.
There is no need to continue to keep these settings.