Log Message:
Updated py-lxml to 3.7.0.

3.7.0 (2016-12-10)
==================

Features added
--------------

* GH#217: ``XMLSyntaxError`` now behaves more like its ``SyntaxError``
  baseclass.  Patch by Philipp A.

* GH#216: ``HTMLParser()`` now supports the same ``collect_ids`` parameter
  as ``XMLParser()``.  Patch by Burak Arslan.

* GH#210: Allow specifying a serialisation method in ``xmlfile.write()``.
  Patch by Burak Arslan.

* GH#203: New option ``default_doctype`` in ``HTMLParser`` that allows
  disabling the automatic doctype creation.  Patch by Shadab Zafar.

* GH#201: Calling the method ``.set('attrname')`` without value argument
  (or ``None``) on HTML elements creates an attribute without value that
  serialises like ``<div attrname></div>``.  Patch by Daniel Holth.

* GH#197: Ignore form input fields in ``form_values()`` when they are
  marked as ``disabled`` in HTML.  Patch by Kristian Klemon.

Bugs fixed
----------

* GH#206: File name and line number were missing from XSLT error messages.
  Patch by Marcus Brinkmann.

Other changes
-------------

* Log entries no longer allow anything but plain string objects as message text
  and file name.

* ``zlib`` is included in the list of statically built libraries.