Parses a tiny subset* of HTML into a drawable data structure. Because UIWebView is way too slow, and you can't "draw" NSAttributedStrings the same way as NSStrings (drawInPoint: drawInRect: etc), and NSAttributedStrings lack useful things such as links and image rendering. * Supported tags/attributes: - b - a - i - br Todo: - trim adjacent spaces in the same manner as HTML renderers - delegate link callbacks - images -- delegate image callbacks - blockquote - underline - strikethrough Nice to have: - font tags, with attributes such as font size, color - image align attribute