progit/progit — pull request #221 by peff (2012-06-10 07:47:02+00:00)
Title: drop trailing whitespace from header lines

Markdown will mis-parse a header line with trailing
whitespace like:

## Subsection ##_

(where the "_" is substituted here to show where the
whitespace would be). This ends up as the section title:

Subsection ##