FIX: for bug where restart i3 when compton was on and many windows become not...

FIX: for bug where restart i3 when compton was on and many windows become not visible (either have to restart the app or disable compton to see them again).  Workaround here is killing compton before restarting i3.

Note, on restart of i3, compton is disabled.

i3/config

@@ -238,7 +238,7 @@ for_window [urgent=latest] focus
 bindsym $mod+Shift+c reload
 
 # restart i3 inplace (preserves your layout/session, can be used to upgrade i3)
-bindsym $mod+Shift+r restart
+bindsym $mod+Shift+r exec --no-startup-id pkill compton; restart
 
 # exit i3 (logs you out of your X session)
 bindsym $mod+Shift+e exec "i3-nagbar -t warning -m 'You pressed the exit shortcut. Do you really want to exit i3? This will end your X session.' -b 'Yes, exit i3' 'i3-msg exit'"