This makes it easier to visualize changes in various axes or key states that
should not be there, doubly so for long recordings.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
I've been using this script ever since libinput record was available, might as
well ship it with libinput so I don't have to remember where it lives.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>