2.4.0 Long waiting on develop :)

New features:

• Additional architectures: ESP8266, ESP32 (experimental)
• Ethernet (LAN or MQTT) with W5100 or ENC28J60
• Add multiple hardware combinations to platformio.ini so the user doesn't need to customize it so often
• add EEPROM_OFFSET option

Improvements:

• Change button logic to be more independent from relays
• Create wrapper for MySensors dependency so it can be better tested