Add RM4MINI compatibility

Author: digitlength

mqtt.py

@@ -182,7 +182,7 @@ def on_message(client, device, msg):
             return
 
         # RM2/RM4 record/replay control
-        if device.type == 'RM2' or device.type == 'RM4' or device.type == 'RMMINI':
+        if device.type == 'RM2' or device.type == 'RM4' or device.type == 'RMMINI' or device.type == 'RM4MINI':
             file = dirname + "commands/" + command
             handy_file = file + '/' + action