Make an Item have properties as an Itemprop object
Extract links in the same way as properties
Add serializer to HAL
Enable to specify main item id of document
Parse elements with attribute 'rel'
Allow to specify any node with XPath instead of element id
Output itemid as a link to self
Allow to set a profile path
Cope with an item that have multiple types
Output itemtype as a link of relation "type"

"type" is a IANA-registered link relation.
Separate Extract from Serializer
Support UBER
Add UBER loader for hash parsed from JSON
Improve itemprop and property object
Extract forms in HTML and support UBER's serialization
Fix processing rel of submit button
:star2: Brandnew gem name "hypermicrodata"
Add newline at end of the file