Library
-------
+ - Issue #16298: In HTTPResponse.read(), close the socket when there is no
+ Content-Length and the incoming stream is finished. Patch by Eran
+ Rundstein.
+
+- Add abc.ABC class to use inheritance rather than a direct invocation of
+ ABCMeta metaclass. Patch by Bruno Dupuis.
+
+- Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're
+ available.
+
+- Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch
+ contributed by Berker Peksag.
+
- Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
that caused it to not ignore certain errors when ignore_errors was set.
Patch by Alessandro Moura and Serhiy Storchaka.