gegl: get/set methods for HSVA/HSLA
Inspired by @Jehan while working on GIMP's palette_sort.py file.
Since Python doesn't get access to gegl_color_get_pixel ()
, getting color values in HSV and HSL is a bit annoying. GIMP uses HSV quite a bit, so it might make sense to have convenience functions for them that work in other language bindings.
Feedback appreciated!
Edited by Alx Sa