Previously, if you had windows, in order: newM, newS, and newB, and you
watched ^new, they would get displayed in order: newB, newM, and newS.

It was due to sorting that was preventing random ordering.

Now, order of previews will be the same as order of windows in session.

Options list showed two -i options instead of -i and -s.

See merge request !2

Fix link to script announcement

See merge request !1

Script was failing when SKIP_MATCHER doesn't match anything in any of the
windows.

Script that waits for line matching given regexp to appear in tmux pane(s).
This is useful, for example, for checking whether command running in pane
ended.