guzzle/guzzle — pull request #348 by natmchugh (2013-06-12 13:44:12+00:00)
Title: Re-write XmlVisitor to use XMLWriter and handle CDATA

Related to #341

* Use XMLWriter instead of SimpleXML to write XML has native CDATA support
* add test to handle html in element content
* use XMLWriter to escape as CDATA if found