Should be able to specify all dependency qualifiers, including "classifier"

The AssemblyIncludesArtifactFilter class currently only uses groupId and classId to filter dependencies, but it would be very useful to be able to filter on other dependency qualifiers as well - in particular the "classifier".

I would like to be able to filter jar files with the "sources" classifier (I assume this is a classifier) when creating an assembly, to put those source archive files in a different directory.