Added support for session tags via tags and
transitive.tags parameters.
Re-factored the way credentials are stored. Chained credentials are
supported by providing a stack of credentials. Credential management
functions are now exported and documented.
aws.iam 0.1.7
aws.iam 0.1.6
Expanded documentation.
aws.iam 0.1.5
Bump aws.signature dependency to 0.3.4.
aws.iam 0.1.4
Documentation fixes. (#5)
Swapped import of XML to xml2.
aws.iam 0.1.3
Implement the Security Token Service (STS) API. (#4)