updated setup.py [ci skip]

Author: release-please[bot]

setup.py

@@ -30,7 +30,7 @@ def main():
 
     setuptools.setup(
         name="google-cloud-ndb",
-        version = "0.2.1",
+        version = "0.2.2",
         description="NDB library for Google Cloud Datastore",
         long_description=readme,
         long_description_content_type="text/markdown",