Bump version from 1.8.0 to 1.9.0

Author: indykoning

setup.py

@@ -6,7 +6,7 @@
 
 setuptools.setup(
     name="growattServer",
-    version="1.8.0",
+    version="1.9.0",
     author="IndyKoning",
     author_email="indykoningnl@gmail.com",
     description="A package to talk to growatt server",