The relaxation data GUI element 'add' buttons now launch a multi-page wizard to input metadata.
The relaxation data 'Add' and Bruker 'Add' buttons now launch wizards whereby the first page is the
original relax_data.read or bruker.read user functions, but then this is followed by the
relax_data.peak_intensity_type, relax_data.temp_calibration and relax_data.temp_control user
functions. This allows the metadata to be set up prior to the model-free calculations.
