Revision 18131: 10_MYSENSORS_DEVICE: change alive logic to heartbeat, add OTA feature, ...

[System]

Revision 18131: 10_MYSENSORS_DEVICE: change alive logic to heartbeat, add OTA feature, ...

10_MYSENSORS_DEVICE: change alive logic to heartbeat, add OTA feature, add more MySensors 2.0 API features

Source: Revision 18131: 10_MYSENSORS_DEVICE: change alive logic to heartbeat, add OTA feature, ...