Pull Request Check List

This is just a friendly reminder about the most common mistakes. Please make
sure that you tick all boxes. But please read our contribution
guide at least
once, it will save you unnecessary review cycles!

If an item doesn't apply to your pull request, check it anyway to make it
apparent that there's nothing left to do. If your pull request is a
documentation fix or a trivial typo, feel free to delete the whole thing.

For this pull request:

• I added tests for changed code.
• I updated documentation for changed code.
• I wrote the documentation as .rst files and using semantic
  newlines.

If you have any questions to any of the points above, just submit and
ask! This checklist is here to help you, not to deter you from contributing!