Moptipy

The build process now produces two more artifacts: an archive with the documentation and a frozen requirements file.
This should help to better document and distribute the package.

The log files now contain the version information of more dependencies.
Also, the log information string is not entirely re-created on forks, but only the CPU affinity is updated.
This means that the correct numbers of physical and logical CPUs are now logged in parallel builds.

small improvements in Path API

Better Tests and Minor Improvements and Bug Fixes

More Tests and Minor Improvements: API should now be more stable

We now use the unified build process from `pycommons`.
This reduces the projects in which the same dependencies need to be managed.
It also reduces redundant code.

First Release based on moptipy using pycommons