Prepare for 2.2.0

Author: fabaff

setup.py

@@ -12,7 +12,7 @@
 
 setup(
     name="python-mystrom",
-    version="2.1.0",
+    version="2.2.0",
     description="Asynchronous Python API client for interacting with myStrom devices",
     long_description=long_description,
     url="https://github.com/home-assistant-ecosystem/python-mystrom",