Library for switching mumbi m-FS300 remote controlled outlets and compatible devices. Derived from rcswitch library see also https://github.com/sui77/rc-switch
Created by Karl-Heinz Wind - karl-heinz.wind@web.de
Thanks to fuchks from FHEM forum for the encrypt/decrypt routines. See https://forum.fhem.de/index.php/topic,36399.60.html