[bumblebee] add small sleep before update

in some situations/modules (spotify, playerctl, etc.), it is possible
that a state change (e.g. play/pause) takes a small time to actually
propagate into the whole system (e.g. until the next "update" retrieves
the correct value).

To alleviate that, add a very small delay to the update.

bumblebee-status

@@ -68,6 +68,8 @@ def handle_input(output, update_lock):
                         modules[event["name"]] = True
                 except ValueError:
                     pass
+
+            time.sleep(0.2)
             if update_lock.acquire(blocking=False) == True:
                 core.event.trigger("update", modules.keys(), force=True)
                 core.event.trigger("draw")