must define convention (bugfix for previous unmerged commit)
must define convention (bugfix for previous unmerged commit)

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