Doctests failing

[headtr1ck]

What is your issue?

The doctest is currently failing with

E UserWarning: h5py is running against HDF5 1.14.3 when it was built against 1.14.2, this may cause problems

[keewis]

this is something that's out of our control, h5py would have to be built against hdf5=1.14.3 on conda-forge. How do we usually deal with warnings raised by dependencies? Add a filter to one of the conftest.py files?