Make it possible to copy all dependencies (and their transitive ones) excluding a few (and their transitive ones)

While it is currently possible to exclude particular artifacts from being copied, this happens after the transitive dependencies have been evaluated. This makes it impossible to exclude one artifacts along with all their transitive dependencies. A suggestion (don't know how feasible this is) would be to have two exclusion lists, one that gets applied before the transitive dependency is called and one after.