Removed the ``doctype()`` method and the *html* parameter of the constructor
of :class:`~xml.etree.ElementTree.XMLParser`.  The ``doctype()`` method
defined in a subclass will no longer be called.  Deprecated methods
``getchildren()`` and ``getiterator()`` in the :mod:`~xml.etree.ElementTree`
module emit now a :exc:`DeprecationWarning` instead of
:exc:`PendingDeprecationWarning`.
