Start work (which may not pan out) on a new sanitizer. Right now, it passes
all but 1 of the HTML5lib Sanitizer's unit tests. But it doesn't do much
of anything to ensure well-formedness. This is not an issue for Maruku-processed
content, but it is a concern for <nowiki> blocks.
(One solution would be to use the HTML5lib parser on <nowiki> blocks.)
In any case, this baby is 3 times as fast as the HTML5lib sanitizer.
Create a test case for utf-8 bug reported by Diego Restrepo. Seems to be related to WikiWord chunk handling.
Add some other tests, and fix a minor bug in vendor/plugins/maruku/lib/maruku/ext/math/latex_fix.rb.
