Save next item after firing command in case it has added to the queue.
Only redraw pane when it has actually changed.
Merge unlink-window into kill-window.
Fix some spacing nits.
Add pane_input_off format, from Anish R Athalye.
Move cfg_causes local into cfg.c and remove struct causelist.
Merge linkw and movew which are virtually identical.
Merge branch 'obsd-master'

Conflicts:
	Makefile
	cmd-link-window.c
	cmd-unlink-window.c