Prepare release 2020.5.0
We decided with @payno to embed support for
h5py >= 3 in the next major releases.
As the current MR already embeds many fixes, a second MR will finish the release and do the work for
h5py 3 support.
- Merge MR !94 (merged) (once tomoscan 0.4.0 is released)
- Ensure unit tests are passing
- Update API doc
- Update doc: changelog, whatsnew, features, ...