------------------ - Don't overwrite the ``Host`` HTTP header if it's set - Change fetch body arg default to None
0.6.0
------------------ - Add support for using ``curl_httpclient.CurlAsyncHTTPClient``
0.5.0
------------------ - Correctly support region lookup for non-default profiles.
0.4.4
------------------ - Don't blow up if awz_error does not have a message
0.4.3
------------------ - Allow GET with empty body (2) - Dmitry Mukhin - Ensure headers is None if empty (2) - Dmitry Mukhin - Don't blow up if an exception other than tornado.httpclient.HTTPError is raised
0.4.2
------------------ - Add support for ``ExpiredTokenException``