plt/racket — pull request #203 by greghendershott (2012-12-19 00:06:24+00:00)
Title: Render Scribble margin-note as Markdown block-quote.

More precisely, do this for nested flows with the `"refcontent"` style.

For instance this Scribble:

@margin-note{Note: This is a note. Let's make it long enough that the
markdown output will have to line-wrap, to make sure the > mark starts
each line properly.}

Will render as this Markdown:

> Note: This is a note. Let's make it long enough that the markdown output
> will have to line-wrap, to make sure the > mark starts each line
> properly.

A site like GitHub.com will render this in a block-quote style
suitable for notes:

> Note: This is a note. Let's make it long enough that the markdown output
> will have to line-wrap, to make sure the > mark starts each line
> properly.