Remove Suono project.
Modify Python aggregator to support full aggregator names (with namespaces).

You can now create a Python aggregator as follow:

    std::string const name = "audiopia.common.aggregator.lastfm";
    audiopia::collection< audiopia::python::aggregator > coll( name, "reggae" );
    while( coll( 10 ) ) {
        coll.dump();
    }