Release 3.2.2
- Use Builder instead of Haml in writer, as Haml 6+ removes support for custom tags.
- Create sub-class of Builder::XmlMarkup to be able to eliminate surrounding whitespace for XML Literals.
- Use QNames everywhere instead of CURIEs.
- Updates for Ruby 2.6 compatibility.
- Remove obsolete Nokogiri Hacks and Haml Templates.
- Capture Standard output in writer tests.
- Update for new test suite locations.