ENH: Added run_stop object to DataBroker
ENH: Added run_stop object to DataBroker

NSLS-II/datamuxer,ericdill/databroker,danielballan/datamuxer,ericdill/databroker,danielballan/dataportal,NSLS-II/dataportal,tacaswell/dataportal,ericdill/datamuxer,NSLS-II/dataportal,danielballan/datamuxer,tacaswell/dataportal,ericdill/datamuxer,danielballan/dataportal