introduces object comparison with json library
introduces object comparison with json library

- uses equals method to perform unordered comparisons

edoweb/regal-api,jschnasse/regal-api,jschnasse/regal-api,hbz/lobid-rdf-to-json,edoweb/regal-api,edoweb/regal-api,edoweb/regal-api,jschnasse/regal-api,jschnasse/regal-api