Improve Readme file with versions used

[jmvaz]

which versions of the libraries you are using to compile the program?
#include <ESP8266WiFi.h>
#include <ArduinoJson.h>
#include <PubSubClient.h>
#include <HeatPump.h>
#include <ESP8266mDNS.h>
#include <ArduinoOTA.h>

I'm getting the error "failed to publish DISCOV topic" starting the controller, maybe is related with the versions of the libraries. Can you please check which ones you are using on arduino IDE? I recommend start using visual code using platformio, it is much more easy to setup/compile and upload the sketches :)

[unixko]

Did you resolve a problem? Please try to edit file PubSubClient.h MQTT_MAX_PACKET_SIZE to 1280. Here is my environment:

Arduino IDE 1.8.10
ArduinoJson 6.12.0
PubSubClient 2.7.0
HeatPump Library SwiCago/HeatPump@830ba26

I will update readme to include this information.