Log Message:
graphics/wallust: update to 3.1.0

 - fix wal sometimes not using srgb (3091f71ef4) #74
 - backends:
     - fix kmeans to use the full image, instead of resizing, and run 5 times \ 
(e92ec097f1)
     - lch: reduce MIN_CHROMA so it catches more colors ba8b9bf92b
 - fix up complementary on templates #86 314af00176
 - cache:
     - It now stores the contents hash (cfd81f7835)
     - No more magick number on Windows (c0d81a5704)
 - misc: fix up woodpecker, doc generation, makefile, refactor code on colorspaces