Version bump

Author: Michael Rüttgers

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [2.2.0] - 2021-05-04
 ### Changed
 - Replaced MQTT client library with [Pangolin MQTT Client](https://github.com/philbowles/PangolinMQTT)
 - Refactored throttling logic

src/config.h

@@ -4,7 +4,7 @@
 #include "Arduino.h"
 #include "Sensor.h"
 
-const char *VERSION = "2.1.6";
+const char *VERSION = "2.2.0";
 
 // Modifying the config version will probably cause a loss of the existig configuration.
 // Be careful!