Shapes : Fix property derivation
Shapes : generate individuals by default
Shapes : Initial Area Taxonomy Impl
Shapes : minor fixes
Shapes : Support for OR-ed superclasses, Transitive inheritance reduction, Logger replaces printouts
Shapes : basic support for  xOneOf
Shapes : Initial Area Taxonomy Impl
Shapes: Fix inconsistent equals/hashcode logic
Shapes : Initial Area Taxonomy Impl
Partial area taxonomy and overlapping concepts .