another type mismatch in config

src/MqttCoilSubscriber.py

@@ -15,7 +15,7 @@ class MqttCoilSubscriber(AbstractMqttPublisher):
 
     def localLoop(self):
         while True:
-            sleep(self.config["analogInputPublishPeriod"])
+            sleep(float(self.config["analogInputPublishPeriod"]))
 
     def onMessage(self, topic, payload):
         logger.warning("mqtt message received: {} -> {}".format(topic, str(payload)))