revent: Allow group of handlers to be a set
revent: Allow group of handlers to be a set

This should probably be thought about harder, actually...

waltznetworks/pox,jacobq/csci5221-viro-project,PrincetonUniversity/pox,waltznetworks/pox,kpengboy/pox-exercise,andiwundsam/_of_normalize,kavitshah8/SDNDeveloper,xAKLx/pox,denovogroup/pox,PrincetonUniversity/pox,pthien92/sdn,PrincetonUniversity/pox,kpengboy/pox-exercise,VamsikrishnaNallabothu/pox,diogommartins/pox,noxrepo/pox,denovogroup/pox,PrincetonUniversity/pox,noxrepo/pox,xAKLx/pox,chenyuntc/pox,kulawczukmarcin/mypox,adusia/pox,VamsikrishnaNallabothu/pox,carlye566/IoT-POX,MurphyMc/pox,VamsikrishnaNallabothu/pox,diogommartins/pox,PrincetonUniversity/pox,kpengboy/pox-exercise,xAKLx/pox,MurphyMc/pox,waltznetworks/pox,pthien92/sdn,pthien92/sdn,waltznetworks/pox,kpengboy/pox-exercise,xAKLx/pox,chenyuntc/pox,jacobq/csci5221-viro-project,denovogroup/pox,VamsikrishnaNallabothu/pox,adusia/pox,diogommartins/pox,kavitshah8/SDNDeveloper,chenyuntc/pox,VamsikrishnaNallabothu/pox,noxrepo/pox,andiwundsam/_of_normalize,chenyuntc/pox,diogommartins/pox,adusia/pox,andiwundsam/_of_normalize,jacobq/csci5221-viro-project,noxrepo/pox,chenyuntc/pox,carlye566/IoT-POX,MurphyMc/pox,denovogroup/pox,carlye566/IoT-POX,carlye566/IoT-POX,denovogroup/pox,pthien92/sdn,pthien92/sdn,adusia/pox,adusia/pox,waltznetworks/pox,jacobq/csci5221-viro-project,MurphyMc/pox,jacobq/csci5221-viro-project,xAKLx/pox,kulawczukmarcin/mypox,kulawczukmarcin/mypox,kulawczukmarcin/mypox,MurphyMc/pox,kavitshah8/SDNDeveloper,kavitshah8/SDNDeveloper,kpengboy/pox-exercise,andiwundsam/_of_normalize,diogommartins/pox,kulawczukmarcin/mypox,carlye566/IoT-POX