mpd-module-update now mpdup

it is autostarted by the music module if not already running

.local/bin/statusbar/mpdup

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# This loop will update the mpd statusbar module whenever a command changes the
+# music player's status. mpd must be running on X's start for this to work.
+
+while : ; do
+	mpc idle >/dev/null && kill -45 "$(pidof "${STATUSBAR:-dwmblocks}")" || break
+done