v2.1.1 ESP8266 Arduino framework fix
v3 of ESP8266 Arduino framework introduced breaking changes, so I edited platformio.ini to only use version 2
This has nothing to do with the NodeMCU hardware versions.
v3 of ESP8266 Arduino framework introduced breaking changes, so I edited platformio.ini to only use version 2
This has nothing to do with the NodeMCU hardware versions.