bumping rev to pre4
bumping rev to pre4

protochron/carbon,graphite-project/carbon,benburry/carbon,lyft/carbon,mleinart/carbon,xadjmerripen/carbon,krux/carbon,obfuscurity/carbon,iain-buclaw-sociomantic/carbon,xadjmerripen/carbon,benburry/carbon,pu239ppy/carbon,piotr1212/carbon,iain-buclaw-sociomantic/carbon,johnseekins/carbon,graphite-project/carbon,deniszh/carbon,protochron/carbon,graphite-server/carbon,pratX/carbon,johnseekins/carbon,cbowman0/carbon,mleinart/carbon,deniszh/carbon,piotr1212/carbon,pu239ppy/carbon,kharandziuk/carbon,pratX/carbon,JeanFred/carbon,JeanFred/carbon,obfuscurity/carbon,lyft/carbon,criteo-forks/carbon,criteo-forks/carbon,krux/carbon,graphite-server/carbon,kharandziuk/carbon,cbowman0/carbon