Add option for inner gaps only

[wesbluemarine]

I would like to have gaps only between windows.

[YaLTeR]

Not even gaps to the left of the leftmost window and to the right of the rightmost?

[wesbluemarine]

To the left of the leftmost window and to the right of the rightmost it's OK to have gaps for me, but it could be better to have settings for it, like other compositor/window managers.

[salman-farooq-sh]

Not even gaps to the left of the leftmost window and to the right of the rightmost?

Outer gaps just make the display bezels feel bigger than they really are when you have a wallpaper which blends with the display bezels e.g. pitch black wallpaper on glass-covered amoled laptop display.

[megatux]

I also want this. Gaps only between windows makes sense, to differentiate them but not on the monitor edges (or panels), it's a waste of space. I think i3 has inner and outer gaps for this. See this