Adaption to 2.0 API

__init__.py

         self.__block_add_callbacks__ = True
         logger.info("Initiating mqtt client instance")
         self.__callbacks__ = {}
-        self.__client__ = paho.Client(name)                                     # create client object
+        self.__client__ = paho.Client(paho.CallbackAPIVersion.VERSION2)         # create client object
         if username is not None and password is not None:
             logger.debug("Configuring authentification")
             self.__client__.username_pw_set(username, password)                 # login with credentials
         self.__client__.on_connect = self.__on_connect__
         self.__client__.on_disconnect = self.__on_disconnect__
         try:
-            self.__client__.connect(host, port)                                 # establish connection
+            self.__client__.connect(host, port, 60)                             # establish connection
         except (socket.timeout, OSError) as e:
             logger.warning("Can not connect to MQTT-Server")
         self.__client__.loop_start()                                            # start the loop
         get_topic_logger(topic).debug("Sending message with topic %s and payload %s", topic, str(payload))
         self.__client__.publish(topic, payload)
 
-    def __on_connect__(self, client, userdata, flags, rc):
-        logger.debug("Connect with rc=%d", rc)
+    def __on_connect__(self, client, userdata, flags, rc, properties):
+        logger.debug("Connect with rc=%s", repr(rc))
         if rc == 0:
             self.__block_add_callbacks__ = True
             logger.debug("Registering topics...")
                 self.__client__.subscribe(topic)
             self.__block_add_callbacks__ = False
 
-    def __on_disconnect__(self, client, flags, rc):
-        logger.warning("Disconnect with rc=%d", rc)
+    def __on_disconnect__(self, client, userdata, flags, rc, properties):
+        logger.warning("Disconnect with rc=%s", repr(rc))
 
     def __receive__(self, client, userdata, message):
         get_topic_logger(message.topic).debug("Received message with topic %s and payload %s", message.topic, str(message.payload))