TODO.txt

add __version__
pymc 4 support

FutureWarning: In v4.0, pm.sample will return an `arviz.InferenceData` object instead of a `MultiTrace` by default. You can pass return_inferencedata=True or return_inferencedata=False to be safe and silence this warning.

version incompatibility only during test build?
ERROR: pymc3 3.11.5 has requirement numpy<1.22.2,>=1.15.0, but you'll have numpy 1.22.4 which is incompatible.
ERROR: pymc3 3.11.5 has requirement scipy<1.8.0,>=1.7.3, but you'll have scipy 1.8.1 which is incompatible.