5.4.0 20170725
* Fix command reset regression introduced in 5.2.0
* Increase polling from 0.1 second to 0.05 second
* Add multipress to all buttons
* Fix button 1 double press behaviour on multi relay devices
* Add support for Hua Fan Smart Socket (#479)
* Add support for Sonoff 4ch Pro (#565)
* Add command SetOption13 1 to allow immediate action on single button
press
* (disables multipress, hold and unrestricted commands) (#587)