Support it_behaves_like behavior
Update DynamoDB batch_write_item implementation to check for duplicates based on different keys before uploading
Add aws_credentials argument during dynamodb initialization to override the AWS SDK credential chain
Enable upstream callers to mark an example as flaky through the example's metadata
Only require dynamodb instead of full aws-sdk
Relax Aws gem version constraint as aws-sdk v3 is 100% backwards compatible with v2
Initial Release