evidence_calculation: Update docstrings, clean-up demo scripts, add demo to...
evidence_calculation: Update docstrings, clean-up demo scripts, add demo to CI, remove MPI from elbo demo.
On Thursday, 7th July from 1 to 3 pm there will be a maintenance with a short downtime of GitLab.
evidence_calculation: Update docstrings, clean-up demo scripts, add demo to CI, remove MPI from elbo demo.