Log Message:
graphics/wallust: update to 2.6.1

v2.6.1
 - Better default threshold: 20
 - change u32 -> u8 threshold type

v2.6.0
 - new argument: --config-dir/-d
 - theme subcommand:
    - new random argument, selects a random theme (a31c6f689e)
    - new theme: srcery (eec69f13f3)
    - new flag --preview (2325fbdb6b)
 - Readme:
    - repology badge, thanks onemoresuza (#19)
    - backends, colorspace, filters table
    - new gif showcasing windows terminal
    - a tons more of related projects
 - Terminal colors:
    - Add support for windows terminal (#22) 5e90b12845
    - Use a different tty path for macos (9feea8b9a6)
    - Add iTerm2 support:
        - iTerm tab (d039d9389c)
        - iTerm sequences (6f04d83b21)
    - Proper terminal detection on OpenBSD (c05d4983b9)
 - Added tests for consistency
 - update dependencies
 - removed ununsed dependencies
 - multiple refactors for efficiency as well as more comments