Latest MarkdownSharp.
http://code.google.com/p/markdownsharp/source/detail?r=0f7a8d615e698ac307fe58268e80bcd4c618c2db
Restored GitHub styled fenced code blocks.
Don't require a double newline before a list to match GitHub markup.
Don't require a newline before a fenced codeblock to match GitHub markup.
Hash and restore codeblocks to keep their content from being modified.