Rofi-like multiple modes about ilia

[JoeOsborn]

The -a argument is great! The only missing piece for me is that in rofi, scripts that produced text lists (e.g. “here is a list of media player actions”) could be named and included in the panels. If we could give an explicit list of panes to use, then some of those could be script paths or similar to allow for extending ilia arbitrarily—something like ilia -p windows -p desktop -p ~/bin/media maybe?