It is a great package! I am going to review the documentation and give you my feedback.
One suggestion before the final version, that I have though: It could be possible to have the same Highlighter API that could be used for Latex, Html or Text? In the depth, it could use the current existing LatexHightlighter, HTMLHighlighter, or Highlighter, and considering the backend to use finally one or another? It could be great if that would be possible (I could help you in a couple of weeks if the idea interest you).