Enable button not mandatory anymore #19
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While trying to make this node work with a Logitech F710 I encountered some quirks so I had to look up the sources. I added the possibility of using no enable buttons. In this case the node will continuously sending twist messages. In this case the gamepad has a very stable home position with zeros at all analog sticks. So the stop command is generated naturally by it's home positions after releasing the analog sticks. Also I added a repetition for publishing the stop message. I experienced it a few times that a message got lost especially while using several machines connected by WiFi. So just to be sure the stop message is sent three times. This changes shouldn't have any drawback.