Workflow improvements

[Richardk2n]

Push/Merge:

Currently all tests

• black
• linting
• isort
• rst

are done sequentially.
It might be better to perform those in different workflows.

Advantages:
Easier to see what is wrong (all be it not by a lot)

Disadvantages:
Redundant work in the workflows
Maybe depends on python version thus causing to much needed workflows.

Publish:

Change to a system where creation of a tag causes a release to be created and info to be filled in.
(Currently releases need to be created manually.)