Changes
no edit summary
* xISBN/thingISBN use. (Some thought is required in how to integrate this while avoiding false positives). Bowker ISSN service for metadata enhancement. OCLC xISSN? Integrate preceding/succeeding title information from OPAC or xISSN?
* Fix Umlaut Referent to more easily allow multiple authors. Architectural change neccessary to get a lot of this stuff working right.
