Almost all reported bugs have been fixed. Significant improvements have been made to content sanitizing, including CSS, HTML5, XHTML, SVG, and MathML support. HTTP request headers can now be overridden, and HTTP response headers can be passed in if the developer is using an HTTP client library to request URLs. Microformats, including rel-tag and rel-enclosure, are now supported. Support for Python 3 has been added.
