ENH: change the ScalarToRainbow functor to make it compatible with the ITK colormap hierarchy (in review) backward compatibility preserved

ENH: Since the shape label object filter computes the polygon corresponding to each label object, an AttributeMapLabelObject is now able to store this polygon for reuse

ENH: We should not test the http error code since it does not guarantee that the server exist or not

ENH: add the production of the world file to provide and example on how to have georeference products from tilemap