Update to use OWL API v4.2.8 and java-skos-api v3.2

[ShanePMorgan]

• Modify to use v4.2.8 of the OWL API
• Modify to use v3.2 of java-skos-api
• Modify Maven POMs to reference:
  • javax.inject.jar
  • com.google.guava
  • google.guice.jar
  • mdock.jar
  • renamed Protégé and OWL API JARs
• Fix compilation issues due to changes between v3.x and v4.x of the OWL API (as per https://github.com/owlcs/owlapi/wiki/Migrate-from-version-3.4-and-3.5-to-4.0)
• Increment version number from v1.1.2 to v1.2.0