HV-708 Adapting tests
HV-708 Making HV compile against news BV API
HV-708 Implementing new methods on Node and subtypes
HV-708 Adapting to changed package of ExecutableValidator; Cleaning up tests a bit
HV-707 Returning correct default value from BootstrapConfiguration#getValidatedExecutableTypes()
HV-708 Implementing ConstraintViolation#unwrap