I noticed hgroup at https://github.com/impressivewebs/Easy-HTML5-Template/blob/master/index.html#L50 but I also noticed http://html5doctor.com/the-hgroup-element/ which says:
Update 16th April, 2013. hgroup has now been removed from the HTML5 specification. We are working on an article to help guide authors on which markup patterns they should use instead.
Update 4th April, 2013. Please note that following this decision, hgroup will be removed from the HTML5 specification. As such, we don’t endorse using it on production sites.
I noticed hgroup at https://github.com/impressivewebs/Easy-HTML5-Template/blob/master/index.html#L50 but I also noticed http://html5doctor.com/the-hgroup-element/ which says: