request, improving compatibility with some caches.
* `tornado.simple_httpclient` no longer includes basic auth credentials
in the ``Host`` header when those credentials are extracted from the URL.
+* `tornado.testing.AsyncTestCase.wait` now resets its timeout on each call.
+* `tornado.simple_httpclient` no longer modifies the caller-supplied header
+ dictionary, which caused problems when following redirects.
+* `tornado.web.addslash` and ``removeslash`` decorators now send permanent
+ redirects (301) instead of temporary (302).
+* `tornado.wsgi.WSGIApplication` now parses arguments correctly on Python 3.
+* `tornado.auth.FacebookGraphMixin` no longer sends ``post_args`` redundantly
+ in the url.
+* `tornado.iostream.IOStream.read_until` and ``read_until_regex`` are much
+ faster with large input.