google-cloud-datastore 0.23.0

• google.cloud.datastore.__version__ attribute added (#3046)
• On HTTP requests, sending X-Goog-API-Client header with value gl-python/x.y.z gccl/a.b.c where x.y.z is the version of Python that is running and a.b.c is the version of the datastore package being used (#3035)
• Storing all connection data on Client instead of on private Connection (#2970)
• Removing __all__ from google.cloud.datastore.helpers (previously wasn't exposing entity_to_protobuf / GeoPoint) (#2916)

PyPI: https://pypi.python.org/pypi/google-cloud-datastore/0.23.0