Bugfix regarding a software agent record.
Merge pull request #57 from krischer/bugfix

Bugfix regarding software agent records
Fixed: Cloning the records when creating a new document from them
Merge remote-tracking branch 'upstream/master' into enh/rdf-1.x

* upstream/master:
  Fixed: Cloning the records when creating a new document from them
  Bugfix regarding a software agent record.
Fixed: Unintended merging of Identifier and QualifiedName values
Fixed: PROV-N representation for  xsd:dateTime (closed #58)
updated rdf serialization
Merge remote-tracking branch 'upstream/master' into enh/rdf-1.x

* upstream/master:
  Fixed: PROV-N representation for  xsd:dateTime (closed #58)
  Fixed: Unintended merging of Identifier and QualifiedName values