Finished removing Renderer from the project.
Stripped dead code out of CssView.
Renamed CssView#builder_render to render
Removed all uses of self from TextView
Renamed TextView#render_document to render
Moved TextView to take the document in its constructor, rather than its render method.
Modified HtmlView to take the document in its constructor, rather than its render method.
Added style parameter to CssView
Refactored top-level tastydoc code a bit.
Refactoring.