6.0.0

• Update to dropwizard 3
  • (breaking) Drop java 8 support
• Merged with guicey-ext modules repository:
  • Ext modules version would be the same as guicey
  • dropwizard-guicey POM would not be a BOM anymore (everything moved to guicey-bom)
  • Exclusions not applied in BOM anymore, instead they applied directly in POM