Release 1.1.2.

* Update to reasoner version to allow lists to be used as property values, if every member of the list would otherwise be an acceptable value for the property.
* Set User-Agent when making requests.
* Update schema.org examples, using new naming convention.
Update #humanize implementation for Date, Time and DateTime; depends on RDF.rb 1.1.6.
Humanize all literals in get_value()
Display a warning when a superseded term is used (based on schema:supersededBy).
This resolves issue #15.
Don't complain that a term is undefined, if the detected vocabulary doesn't exist.
This resolves issue #13.
Display identifier in tabular view, unless it's a BNode with <= 1 reference count. This should ensure that most cases work properly.
Update schema.org examples for v1.91+
Version 1.91.
Release 1.91

* Version numbers now track schema.org versioning.
* Improve humanized display of dates and times when no timezone is present.
* Show a warning for the use of superseded terms.
* Don't complain about undefined terms from non-included vocabularies.
* Improve tabluar-view nesting for BNodes.
* Display @id for each element, except items with a BNode only used as a value or otherwise unreferenced at the top-level.