Pylons/pyramid — pull request #1372 by Harz-FEAR (2014-07-08 02:58:21+00:00)
Title: Additional HTTP Status Codes

HTTP Status codes from [RFC 6585](http://tools.ietf.org/html/rfc6585),
Especially *429 - Too Many Requests* is pretty useful for APIs, I think it is worth including.
I did not implement *511 - Network Authentication Required* because it is
> for use by intercepting proxies that are interposed as a means of controlling access to the network.