.. bpo: 38174
.. date: 2019-09-23-21-02-46
.. nonce: MeWuJd
.. release date: 2019-10-12
.. section: Security

Update vendorized expat library version to 2.2.8, which resolves
CVE-2019-15903.

..

.. bpo: 38216
.. date: 2019-09-27-15-24-45
.. nonce: -7yvZR
.. section: Library

Allow the rare code that wants to send invalid http requests from the
`http.client` library a way to do so.  The fixes for bpo-30458 led to
breakage for some projects that were relying on this ability to test their
own behavior in the face of bad requests.
