* [DBPEDIA,NEW] Added assert_resource/2 for assering the depth-1 triples involving a resource.
* [IDENTITY,NEW] Setting up the experiment for the 'Identity on the Web' paper.
* [IDENTITY,NEW] Added a simple run file for the Identity experiment.
* [MATH_EXT,SC] Renamed plus/3.
* [OWL_READ,NEW] Added owl_resource_identity/[4,5].
* [PRINT_EXT,SC] Renamed all public predicates and renamed the module.
* [PRINT_EXT,EXT] Rewrote the printing of lists.
* [PGC] Updated many module paths.
* [RDF_NAMESPACE,EXT] Added three new namespaces.
* [RDF_NAMESPACE,NEW] Added rdf_register_namespaces/0.
* [RDF_SERIAL,SC] Adapted some options for loading/saving files.
Merged with PGC changes made in the IOTW project.