[PierreRaybaut]

Summary

Release notes for the follow-up of the updated review of the develop branches. The code changes are in DataLab-Platform/Sigima#84 and DataLab-Platform/SigimaX#22; this PR only documents their effect in DataLab (with French translations):

• Regions of interest: circular and polygonal ROIs also select the pixels whose centers lie inside their shape (polygon vertices are no longer rounded; circles are no longer drawn in pixel units on non-uniform images); ROI grids are made of whole pixels and a full-size grid covers every pixel exactly once; ROIs saved with earlier versions are not converted.
• Flips and rotations: exactness bounded for non-uniform coordinates (circles, ellipses and polygons moved approximately along a non-uniform axis).
• Processing: resampling and Z-axis polynomial calibration of complex images keep the imaginary parts.
• HDF5 browser: NeXus image axes are still read entirely for previews (checked as on import).

Tests

• Full suite locally with the Sigima and SigimaX branches of the same name: 1167 passed, 3 skipped.
• The CI uses these branches (same name).

Merge after DataLab-Platform/Sigima#84 and DataLab-Platform/SigimaX#22.