Libraries used:
126: FastLED - for APA102 control - https://github.com/FastLED/FastLED/wiki/Overview
567: WiFiManager - for setting up Wifi - https://github.com/tzapu/WiFiManager/wiki/API-reference
89: PubSubClient - MQTT Client libary - http://pubsubclient.knolleary.net/
64: ArduinoJson - simple JSON parser - https://github.com/bblanchon/ArduinoJson/wiki