setup.py: require matplotlib 1.4 now
setup.py: require matplotlib 1.4 now

pyspeckit/pyspeckit,e-koch/pyspeckit,pyspeckit/pyspeckit,mikelum/pyspeckit,allisony/pyspeckit,e-koch/pyspeckit,vlas-sokolov/pyspeckit,jpinedaf/pyspeckit,keflavich/pyspeckit,allisony/pyspeckit,vlas-sokolov/pyspeckit,mikelum/pyspeckit,low-sky/pyspeckit,low-sky/pyspeckit,keflavich/pyspeckit,jpinedaf/pyspeckit