Parsel

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* Add ``SelectorList.get`` and ``SelectorList.getall``
methods as aliases for ``SelectorList.extract_first``
and ``SelectorList.extract`` respectively
* Add default value parameter to ``SelectorList.re_first`` method
* Add ``Selector.re_first`` method
* Add ``replace_entities`` argument on ``.re()`` and ``.re_first()``
to turn off replacing of character entity references
* Bug fix: detect ``None`` result from lxml parsing and fallback with an empty document
* Rearrange XML/HTML examples in the selectors usage docs
* Travis CI:

* Test against Python 3.6
* Test against PyPy using "Portable PyPy for Linux" distribution

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* Change default HTML parser to `lxml.html.HTMLParser <https://lxml.de/api/lxml.html.HTMLParser-class.html>`_,
which makes easier to use some HTML specific features
* Add css2xpath function to translate CSS to XPath
* Add support for ad-hoc namespaces declarations
* Add support for XPath variables
* Documentation improvements and updates

~~~~~~~~~~~~~~~~~~

* Add BSD-3-Clause license file
* Re-enable PyPy tests
* Integrate py.test runs with setuptools (needed for Debian packaging)
* Changelog is now called ``NEWS``

~~~~~~~~~~~~~~~~~~

* Fix bug in exception handling causing original traceback to be lost
* Added docstrings and other doc fixes

~~~~~~~~~~~~~~~~~~

* Updated PyPI classifiers
* Added docstrings for csstranslator module and other doc fixes

~~~~~~~~~~~~~~~~~~

* Documentation fixes