mitchellh/goamz — pull request #149 by droxer (2014-11-15 09:26:53+00:00)
Title: Added AWS Signature Version 4 support for IAM, and also added list account alias api.

The AWS Signature Version 4 will support China (Beijing) and EU (Frankfurt)
http://docs.aws.amazon.com/general/latest/gr/signature-version-2.html