Moving to Wayland

[komachi]

After moving to i3, we can move to sway, but it's not available on buster (but will be on bullseye).

What else to change:

• [x] sxiv -> imv
• [ ] rofi -> wofi
• [ ] urxvt -> foot or maybe alacritty
• [ ] i3lock -> swaylock
• [ ] maim: grim + slurp
• [ ] xclip: wl-clipboard

xset/xrdb/xmodmap/xsettingsd/xpub/batify to abandon.