Adding offer class to primary module
Adding first tests for offers to retrieve the right kind of objects and in the correct order
Added testing for simple properties of Offer search results
Adding type, display position, and item offered to Offer
Added item offered, collection and library details to Offer
Updating Offer for the latest serialization from the API
Merging changes from master for the latest June release of Discovery API
Bumping version number for significant feature
Rebaselining the Offer to use the schema:isPartOf to connect the product to its collection
Merging recent changes from master branch
Bumping version number for Offer/holding functionality
Updating the baseline response for bib search results
Updating the check for dbIds parameter to possibly return an empty array rather than nil