Drop Python 3.6 + 3.7

[stdedos]

They inhibit development and CI for no good reason:

Activating 3.8 only makes both of them disappear

https://pypistats.org/packages/pylint-pytest

[anis-campos]

this was solved by #23 right ?

[stdedos]

This will be solved by #23 - first 48212e2 is going for a release as soon as I have my coffee 😅

[stdedos]

Now it's done

[stdedos]

Now it's done (2280620)