Add support for HTML5 semantic elements

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Elements such as <header>, <footer>, <aside>, <article>, <section>, and 
<hgroup> are all useful when using Markdown. It would be nice to have an 
addition to the spec that supports these elements. The exact syntax should 
certainly be debated a bit. I am hoping to begin work on a Ruby library (or 
additions to existing ones) to add HTML5 support and I would like to have us 
agree on a syntax.

Original issue reported on code.google.com by [e-mail] on 17 Oct 2010 at 5:22

[Google Code Exporter]

Original comment by [e-mail] on 12 Nov 2010 at 9:03

• Added labels: Priority-Low, Type-Enhancement
• Removed labels: Priority-Medium, Type-Defect