Bump to a4

bouwew · bouwew · commit 08563d9d9a5d · 2022-07-20T07:46:17.000+02:00
diff --git a/plugwise/__init__.py b/plugwise/__init__.py
@@ -1,6 +1,6 @@
 """Plugwise module."""
 
-__version__ = "0.21.0a3"
+__version__ = "0.21.0a4"
 
 from plugwise.smile import Smile
 from plugwise.stick import Stick
