EDIT

ref #6794 add TermRelation and rename FeatureNode -> TermTreeNode

ref #6794 add TermRelation and TermRelationBase

ref #6794 add term relation type to TermType and fix TermRelationType class

ref #8128 comment changes temporarily to make them compile

ref #6794 add TermRelationshipType

cleanup

preparation for Feature.supportedClasses

ref #8281 and E+M import (additional attributes in TeamOrPersonBase, Reference and TaxonNode)

ref #5448 adapt parser to recognize old ranks like proles

avoiding NPE