SRAMP-547 importedXsds derived relationships
SRAMP-609 completely replaced the Deriver/Linker concepts with
ArtifactBuilder
SRAMP-547 includedXsds/redefinedXsds
SRAMP-466 enforce creationTime ordering during relationship resolution
SRAMP-609 ArtifactContent, docs, cleanup
Merge pull request #508 from brmeyer/SRAMP-547

SRAMP-609, SRAMP-547, SRAMP-466: ArtifactBuilder