Set version 0.9.0

Author: icgood

setup.py

@@ -28,7 +28,7 @@
     license = f.read()
 
 setup(name='proxy-protocol',
-      version='0.9.0.rc2',
+      version='0.9.0',
       author='Ian Good',
       author_email='ian@icgood.net',
       description='PROXY protocol library with asyncio server implementation',