v1.5.2

Bug Fixes

• avoid kind error when using subclasses in local structured properties (#531) (49f9e48)
• fix bug when setting naive datetime on DateTimeProperty with timezone (#534) (ad42606), closes #517
• make optimized Query.count() work with the datastore emulator (#528) (e5df1e3), closes #525
• make sure keys_only ordered multiquery returns keys not entities (#527) (2078dc1), closes #526

Documentation

• fix type hint for urlsafe (#532) (87a3475), closes #529