added Area tag 

Covers the addition of area tag and other minor tweaks to the alg.
http://microformats.org/wiki/index.php?title=microformats2-parsing&diff=64687&oldid=64684

also fixes an issue where it was not testing for :not[.h-*] at implied properties for url
' else if .h-x>a[href]:only-of-type:not[.h-*] then use that [href] for url '