… gimp_label_spin_set_digits() and deleted gimp_prop_opacity_entry_new() - The "digits" argument for the number of decimal places in gimp_prop_scale_entry_new() is now mostly useless since GimpLabelSpin (hence GimpScaleEntry too) got a nice estimation algorithm of sensible values. - Add gimp_label_spin_set_digits() function to manually set the digits property when we don't like the estimated value. - Also add a new "factor" argument to gimp_prop_scale_entry_new(). Its role is to allow a GimpScaleEntry showing a factored range, typically a [0, 100] range for some types of [0, 1] properties. - Remove gimp_prop_opacity_entry_new() which was basically a special-case of gimp_prop_scale_entry_new() and which can now be easily reproduced by simply set factor=100.0. - Update all usage of gimp_prop_scale_entry_new() in app/ and plug-ins/ with updated arguments. It is interesting to note that all existing usage were either integers (digits=1) or when double, the estimated decimal places are the same as the ones which were manually set (hence showing the generic estimation is not too bad). So the new function gimp_label_spin_set_digits() was not even needed once in current code.