Nadeŭka

Results 2 issues of Nadeŭka

1. When characters in the row have the same color, will be better print escape code only once: `\e[38;5;20mw\e[38;5;20mm` -> `\e[38;5;20mwm` 2. Use only space as invisible character, when background...

1. Add support of `ISO_Next_Group` and `ISO_Prev_Group` that can be named `NextLayout` and `PrevLayout`. Being able to embed a toggle configuration into a layout is a great idea I think....