Don't make (X)HTML5 for tests w/ invalid @href.
The "span" element requires an end tag in HTML.
"base" element must not have an end tag in HTML.
Drop xml:base from test 0139; not needed.
"p" & "div" must have end tags in HTML.
"img" element requires "alt" attribute.
Added required "title" and "dd" elements.
Removed the HTML5-invalid "profile" attribute.
Added required "title" element.
Added required "title" element.
Ignore tests known to have invalid markup.
Ignore test 114 (intentionally invalid).
Ignore test 0131 (char. ref expanded to CR char).
Ignore test 0109 (intentionally invalid).
Ignore test 0180 (prefix intentionally invalid).
The rel values in test 0087 are not valid HTML5.
"describedby" & "role" are not valid rel values.
a@src is not valid in HTML5.
Arbitrary values for "rel" are invalid in HTML5.
"homepage" is not a valid rel value in HTML5.