Bump version to 1.22

Author: Photonios

setup.py

@@ -36,7 +36,7 @@ def run(self):
 
 setup(
     name="django-postgres-extra",
-    version="1.21a18",
+    version="1.22",
     packages=find_packages(),
     include_package_data=True,
     license="MIT License",