Module invocation works only partially

[Arne Bachmann]

One more hint for the docs:
It´s possible to invoke the tool via python -m git_of_theseus.analyze <repo-path> which may be interesting for PyPy use for broken/complex Python environments.

It also works for python -m git_of_theseus.survival_plot survival.json --exp-fit.

Invoking python -m git_of_theseus.stack_plot cohorts.json leads to a warning (but generates the plot nevertheless):

D:\apps\Miniconda3\lib\runpy.py:125: RuntimeWarning: 'git_of_theseus.stack_plot' found in sys.modules after import of package 'git_of_theseus', but prior to execution of 'git_of_theseus.stack_plot'; this may result in unpredictable behaviour
  warn(RuntimeWarning(msg))

There is some discussion on the topic here.