rewrite of extractor and AliasSet
Merge branch 'master' of https://github.com/maparent/virtuoso-python into PropertyPaths
Merge branch 'master' of https://github.com/maparent/virtuoso-python into PropertyPaths
copyright and dependencies
small errors, esp. with cloning. Remove debugging.
decompose conditions in quadmap
AliasMaker can receive aliases as input. To be cleaned up