Log message:
graphics/wallust: update to 2.0.0

No ChangeLog provide. Here's a selected list of changes:
 - update deps
 - update config file, more explanations and a bit of styling
 - refractor & clean up, remove legacy code
 - use hex string from image magick output, rather than the rgb tuples
 - only write cache if it doesn't exist

Log message:
graphics/wallust: import package

wallust - Generate colors from an image

Features
 - use of templates and writing these out defined in the config file.
 - different backends (currently only 2)
 - cache values