At this point the render_blog_stream function is done, but RenderBlogStream::new needs to be implemented to actually generate the render context. The body of this function should be similar to convert_blog_post_page_to_render_context.
This module is mostly the intermediate representation of the AST, so the renaming is to make that more clear. The three forms are parsed => intermediate => render.
Parsed comes from Organic and is a direct translation of the org-mode text.
Intermediate converts the parsed data into owned values and does any calculations that are needed on the data (for example: assigning numbers to footnotes.)
Render takes intermediate and translates it into the format expected by the dust templates. The processing in this step should be minimal since all the logic should be in the intermediate step.
