X11 window switcher designed for minimalistic window managers (ratpoison,
xmonad and others) or standalone X11 session. It is lightweight and depends
only on basic X11 libs, conforming to the usage of lightweight WM.

WWW: https://github.com/sagb/alttab

PR: 221425
Submitted by: Dmitri Goutnik (maintainer)
Reviewed by: matthew (mentor)
Approved by: matthew (mentor)
Differential Revision: https://reviews.freebsd.org/D12091