Adds PR to pending change log
Adds merged PRs, and to pending change log.
### SDK Enhancements
* `service/sqs`: Add batch checksum validation test ([#2307](https://github.com/aws/aws-sdk-go/pull/2307))
* Adds additional test of the SQS batch checksum validation.
+* `aws/awsutils`: Update not to retrun sensitive fields for StringValue ([#2310](https://github.com/aws/aws-sdk-go/pull/2310))
+* Update SDK client integration tests to be code generated. ([#2308](https://github.com/aws/aws-sdk-go/pull/2308))
+* private/mode/api: Update SDK to require URI path members not be empty ([#2323](https://github.com/aws/aws-sdk-go/pull/2323))
+ * Updates the SDK's validation to require that members serialized to URI path must not have empty (zero length) values. Generally these fields are modeled as required, but not always. Fixing this will prevent bugs with REST URI paths requests made for unexpected resources.
### SDK Bugs
* aws/session: Fix formatting bug in doc. ([#2294](https://github.com/aws/aws-sdk-go/pull/2294))
