# Release 2021-03-12 v1.2.0

### Smithy Go module
* Fix support for parsing shortened year format in HTTP Date header.
* Fix GitHub APIDiff action workflow to get gorelease tool correctly.
* Fix codegen artifact unit test for Go 1.16

### Codegen
* Fix generating paginator nil parameter handling before usage.
* Fix Serialize unboxed members decorated as required.
* Add ability to define resolvers at both client construction and operation invocation.
* Support for extending paginators with custom runtime trait