* has-class XPath extension function;
* parsel.xpathfuncs.set_xpathfunc is a simplified way to register
XPath extensions;
* Selector.remove_namespaces now removes namespace declarations;
* Python 3.3 support is dropped;
* make htmlview command for easier Parsel docs development.
OBS-URL: https://build.opensuse.org/package/show/devel:languages:python/python-parsel?expand=0&rev=6