Better HTML5 support

[GoogleCodeExporter]

We are missing some HTML5 tags like article.

The original intent for the HtmlBuilder is for it to be HTML5 (hence why its 
not called XHTMLBuilder).

There are obvious work-arounds for this like making your own builder.

Original issue reported on code.google.com by [email protected] on 8 Feb 2012 at 2:29

[GoogleCodeExporter]

Should be in 0.3.0

Original comment by [email protected] on 8 Feb 2012 at 2:30