added "blank" as factory-method
explicitly initialize boolean fields
changed parent version to 1.0.14
renamed factory methods, e.g. createUKLangString() -> uk()
increased version (api change)
changed class name: VariableDefinition -> RepresentedVariable
PersistableResource contains urn-field; extends more generic
PersistabeType
increased version to 1.1.15
added getStudies -> mappedBy("inGroup") of StudyGroup
label of Location is a @Lob
moved relationships to class Agent to the corresponding subclass ->
encountered hibernate mapping problems when mapped in @MappedSuperclass
increased pom version to 1.2.0
Update to Readme.md
update to readme
turned emails of editors into links
changed property of float fields to double, because of precision