docu!

Author: brentru

README.md

@@ -6,7 +6,7 @@
 
 ![AIOArduino](https://cdn-learn.adafruit.com/assets/assets/000/057/496/original/adafruit_io_AIOA.png?1531335660)
 
-This library provides a simple device independent interface for interacting with [Adafruit IO](https://io.adafruit.com) using Arduino. It allows you to switch between WiFi (ESP8266, ESP32, ESP32-S2, Airlift, WINC1500, & WICED), Cellular (32u4 FONA), and Ethernet (Ethernet FeatherWing).
+This library provides a simple device independent interface for interacting with [Adafruit IO](https://io.adafruit.com) using Arduino. It allows you to switch between WiFi (ESP8266, ESP32, ESP32-S2, ESP32-S3, ESP32-C3, Airlift, WINC1500, & WICED), Cellular (32u4 FONA), and Ethernet (Ethernet FeatherWing).
 
 ## Documentation
 

library.properties

@@ -1,5 +1,5 @@
 name=Adafruit IO Arduino
-version=4.2.0
+version=4.2.1
 author=Adafruit
 maintainer=Adafruit <adafruitio@adafruit.com>
 sentence=Arduino library to access Adafruit IO.