MQTT

I have received a new great contribution to the project - MQTT-support! MQTT is a standard for sending and receiving small messages, or events via an MQTT server. It is being used more and more for IoT (Internet of Things), to send messages from small devices like sensors or thermometers.
Support for MQTT is something that has been asked for by other users, but I have not had the time to learn about it and build the support. Now this contribution solves the problem!

The contribution consists of four new HomeItems:

MqttClient
This is the item which actually listens to MQTT. Here you can specify the address to your MQTT broker, and the topic on which OpenNetHome subscribes.

MqttHygrometer
A moisture sensor, listening on a specific MQTT topic.

MqttThermometer
A temperaturesensor, listening on a specific MQTT topic.

MqttRemapButton
Listens to a specific topic, and can execute six different actions depending on the message received.

These functions are contributed by Jocke G and Patrik Gustavsson - thanks a lot guys!

The Items are in the nightly build.