fix #223 Preserve backward compatibility for ontology document format
Bump Sesame to 2.8.0-beta2-SNAPSHOT to get RDF-1.1
Add OWL2Datatype.RDF_LANG_STRING
Use XSD_STRING and RDF_LANG_STRING in OWLLiteralImpl
Convert OWLLiteralImplPlain in place to XSD_STRING and RDF_LANG_STRING
Fix LiteralTestCase due to change in assumptions
More work on RDF-1.1 migration
fix rdfxml and turtle renderers
Fix/workaround manchester test by using test base equals method
Fix JVM incompatible string comparisons, oraclejdk7 renders entities

Others do not seem to do it that way, including oraclejdk8
Change groupId and version to differentiate
Prefer Rio RDF/XML parser
Prefer Rio Turtle parser
Bump jsonld-java to 0.5-SNAPSHOT for testing
Modify HasPriority annotations
Test further against Rio parsers