mikeal/request — pull request #730 by dai-shi (2013-12-08 12:09:18+00:00)
Title: better HTTP DIGEST support

This PR fixes followings:
- proper handling of qop from server
- proper nc format 8LHEX
- no quoting for nc and qop

Ref: http://www.ietf.org/rfc/rfc2617.txt