* `tornado.ioloop.IOLoop` and `tornado.httpclient.HTTPClient` now have
``close()`` methods that should be used in applications that create
and destroy many of these objects.
+* `tornado.simple_httpclient` now supports client SSL certificates with the
+ ``client_key`` and ``client_cert`` parameters to
+ `tornado.httpclient.HTTPRequest`
+* `tornado.httpserver.HTTPServer.bind` now takes a backlog argument with the
+ same meaning as ``socket.listen``.
+* In `tornado.web.Application`, handlers may be specified by
+ (fully-qualified) name instead of importing and passing the class object
+ itself.
+
Bug fixes
~~~~~~~~~
* `tornado.websocket`: now works on Python 3
* `SimpleAsyncHTTPClient`: now works with HTTP 1.0 servers that don't send
a Content-Length header
+* `tornado.iostream.IOStream` should now always call the close callback
+ instead of the connect callback on a connection error.