Next milestone for full-field pipeline.

NB: version was moved from 2020.4.2 to 2020.5.0, as the number of items are enough to make a major release.

Features scope

• More robust auto-CoR (#191 (closed), ...): !81 (merged)
• Output histograms in the case of TIFF output (#170 (closed)): !86 (merged)
• Fix: CoR wrongly shifted on the left: !89 (merged)
• Make nabu_processes.h5 more complete and useful (#190 (closed), #194 (closed)): !91 (merged)
• Misc. improvements (#192 (closed), #193 (closed), #196 (closed)) : !85 (merged), !87 (merged), !92 (merged)
• Add a possibility to exclude projections (#187 (closed)): !94 (merged)
• histogram: Cuda backend (#172 (closed)): !80 (merged)
• Histogram: other output formats (#170 (closed)): !86 (merged)
• Add support for h5py >= 3

Already done in 2020.4.1

• Take magnified pixel size (#192 (closed)): !85 (merged)
• Improvements (#182 (closed), #188 (closed), #189 (closed), #193 (closed))