Upgrade Notes

From 0.1.227

• To use SQLAView, you need to add SQLAlchemy == 0.7.2 to your dependencies and update your code to use from yarhp.sqla import SQLAView.
• To use DynamoDBView, add a dependency on dynamodb-mapper >= 1.3.2 and change your code to from yarhp.dynamo import DynamoDBView.