Release History
---------------
-2.1.0 (XXXX-XX-XX)
+2.1.0 (2013-12-05)
++++++++++++++++++
+- Clean up connections when we hit problems during chunked upload, rather than leaking them.
+- Return connections to the pool when a chunked upload is successful, rather than leaking it.
- Match the HTTPbis recommendation for HTTP 301 redirects.
- Prevent hanging when using streaming uploads and Digest Auth when a 401 is received.
- Values of headers set by Requests are now always the native string type.