Tornado 3.0.1 新特性¶

• The interface of tornado.auth.FacebookGraphMixin is now consistentwith its documentation and the rest of the module. Theget_authenticated_user and facebook_request methods return aFuture and the callback argument is optional.
• Work around a bug in Ubuntu 13.04 betas involving an incomplete backportof the function.
• tornado.websocket.websocket_connect now fails cleanly when it attemptsto connect to a non-websocket url.
• The request attribute of isnow always an HTTPRequest, never a _RequestProxy.
• Exceptions raised by the module now have better messageswhen tuples are used as callback keys.