Updated minimal with latest RestExpress, removed cruft.
Updated mongodb with latest RestExpress release. Removed cruft.
Updated cassandra with latest RestExpress release. Removed cruft.
Polished up serialization config.
Added some sample link relationships.
Added some sample link relationships.
Domain implements Linkable. Removed meaningless relationships, SampleUuidEntityRepository extends CassandraUuidTimestampedEntityRepository.