sgraber/markdown.superscript — pull request #5 by heston (2013-03-13 19:15:25+00:00)
Title: Fix imports for markdown.util

Per http://pythonhosted.org/Markdown/release-2.1.0.html:

markdown.etree and markdown.AtomicString were moved to markdown.util.etree, and markdown.util.AtomicString, respectively. This pull request fixes those imports, making this extension work in Markdown 2.2.1.