control-systems

See @sdrave's comment here.

Current docstring contents are not sufficient. Every function, regardless of trivialness, require at least one usage example.

Background

There is a good idea how to add check ABI compatibility of PRs in this discourse post. This would help us to faster decide about "backporting" a feature from Rolling to currently supported distributions.

We have already all ingredients in our CI pipeline to do this, so let's do it. If som