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* Added method Credentials.use_as_global() to allow the use of credentials with calls directly in the boto3 namespace.
* Added more test cases
* Changed default, profile, region, and role_session name parameter names in awsauthhelper.Credentials.__init__
**Specific bug fixes addressed in this release**
FIXED 10: https://github.com/drewsonne/aws-auth-helper/issues/10
- __init__.py - Bad key