Bump version number

Author: Cito

setup.py

@@ -36,7 +36,7 @@
 
 setup(
     name='gql',
-    version='0.4.0',
+    version='0.5.0',
     description='GraphQL client for Python',
     long_description=open('README.md').read(),
     long_description_content_type="text/markdown",