ItemList proposal

After taking people's feedback, we have put together a simpler ItemList
proposal.

http://sdo-itemlist.appspot.com/ItemList
http://sdo-itemlist.appspot.com/ListItem

Details:

To allow for expressing "just a list", ItemList is now moved from being a
subclass of CreativeWork to a subclass of Intangible. To support existing
uses of ItemList as a CreativeWork, ItemList now contains the following
properties:

- about
- author
- datePublished

Feedback is welcome.

- Vicki


Vicki Tardif Holland | Ontologist | vtardif@google.com