Changes

[Feature #59] Add LangString class for representing language-tagged strings in OntoDriver API.
 (commit: cedc706)

[Feature #59] Add class MultilingualString which will represent multilingual string attributes on object model level.
 (commit: e95b996)

Bump version to 0.15.0-SNAPSHOT to allow easier testing.
 (commit: c088bea)

[Feature #59] Support conversion from LangString to String attributes.

Refactor converters to simplify their usage.
 (commit: ca3492e)

[Feature #59] Use LangString when returning String values with language tag from Sesame Driver.

Partially fixed tests as well.
 (commit: e39a69f)

[Fix] Support automatic conversion from LangString to String in SPARQL result mapping.
 (commit: da35244)

[Feature #59] Return LangString from Jena driver in appropriate cases.
 (commit: 38b3a81)

[Feature #59] Return LangString from OWL API driver in appropriate cases.
 (commit: 2dbbf4b)

[Fix] Fix integration test issues after migration to LangString.
 (commit: 482df1c)

Minor improvement in OWLAPI SelectResultSet.
 (commit: 843f322)

[Feature #59] Extend attribute metamodel with language setting. Initialize it from PU language for now.
 (commit: b16a903)

[Feature #59] Use language from attribute in OOM (FieldStrategy subclasses).
 (commit: 36d2be8)

[Feature #59] Add entity class for testing multilingual attributes.
 (commit: f3ead50)

[Feature #59] Respect attribute language (or its lack) in AxiomDescriptorFactory when generating descriptor for data retrieval.
 (commit: 629f1f8)

[Feature #59] Add SingularMultilingualStringFieldStrategy to handle MultilingualString instances.

Implement value loading from axioms. Slightly extend API of MultilingualString.
 (commit: e25f885)

[Feature #59] Implement mapping of translations to axiom values in SingularMultilingualStringFieldStrategy.
 (commit: ed5de7b)

[Feature #59] Use SingularMultilingualStringFieldStrategy for singular data/annotation property fields using MultilingualString.
 (commit: c8ad641)

[Feature #59] Implement MultilingualString cloning. Testing basic retrieval of multilingual strings.
 (commit: 47a6332)

[Feature #59] Test multilingual string removal.
 (commit: 28b8506)

[Feature #59] Implement multilingual string saving in Jena and Sesame OntoDriver.
 (commit: a384530)

[Feature #59] Implement multilingual string saving in OWLAPI OntoDriver.
 (commit: 293b613)

[Feature #59] Add indirect wrapper for MultilingualString to allow tracking transactional changes. Refactor clone building w.r.t. these wrappers.
 (commit: 195c052)

[Feature #59] Testing multilingual attributes.
 (commit: 7fec276)

[Feature #59] Minor refactoring in instance builders. Add documentation to IndirectWrapperHelper.
 (commit: f5a93da)

[Task #42] Migrate ChangeManagerTest to JUnit 5.
 (commit: fd1900e)

[Feature #59] Restructure integration tests.

 Keep feature-based tests together to prevent generic CRUD test runners from becoming even more complex.
 (commit: 532f7e7)

[Feature #59] Implement support for plural multilingual attributes.
 (commit: b876cb0)

[Feature #59] Testing support for plural multilingual attributes.
 (commit: ef5d978)

[Feature #59] Refactor MultilingualString API for setting values.
 (commit: f85b3c4)

[Feature #59] Generate MultilingualString-type fields in OWL2Java when range is RDF langString. Make this setting configurable.
 (commit: c5ee3aa)