Renamed setting(). The new name is contextualize().

The functions in topleveltools are now these:

    topleveltools.attach()
    topleveltools.contextualize()
    topleveltools.detach()
    topleveltools.graph()
    topleveltools.iterate()
    topleveltools.mutate()
    topleveltools.override()
    topleveltools.parse()
    topleveltools.persist()
    topleveltools.play()
    topleveltools.select()
    topleveltools.show()