strikethrough support

[Mouvedia]

crossed-out is supported by:

• guake
• gnome-terminal
• xterm
• termite
• st
• terminology
• konsole
• terminator
• etc.

not supported by:

• urxvt
• iterm2
• kitty
• etc.

ref: scriptonist/termd@1914712#diff-f01aa33b093c93f74ffc52bd10320dcfR41

[scriptonist]

Sure @Mouvedia will look into it 👍

[Mouvedia]

@scriptonist been a year since then; any progress?