Return undefined instead of failing or returning "" when a value doesn't exist.
Return undefined instead of failing or returning "" when a value doesn't exist.

manastech/cowboy,pap/cowboy,ferd/cowboyku,LineMetrics/cowboy,heroku/cowboyku,acrispin/cowboy,grahamrhay/cowboy,lpgauth/cowboy,omusico/cowboy,CrankWheel/cowboy,rabbitmq/cowboy,binarin/cowboy,layerhq/cowboy,piboye/cowboy,chef/cowboy,dangjun625/cowboy,LineMetrics/cowboy,paulperegud/cowboy,noname007/cowboy,276361270/cowboy,K2InformaticsGmbH/cowboy,layerhq/cowboy,rbalint/pkg-erlang-cowboy,MSch/cowboy,imdeps/cowboy,Reimerei/cowboy,piboye/cowboy,callsign-core/cowboy_hybi00,bsmr-erlang/cowboy,lpgauth/cowboy,LineMetrics/cowboy,essen/cowboy,odo/cowboy,callsign-core/cowboy_hybi00,sile/cowboy,hairyhum/cowboy,heroku/cowboy,ninenines/cowboy,essen/cowboy,linearregression/cowboyku,yangchengjian/cowboy,heroku/cowboy,nviennot/cowboy,kivra/cowboy,turtleDeng/cowboy,unisontech/cowboy,unisontech/cowboy,yangchengjian/cowboy,manastech/cowboy,venkateshreddy/cowboy,binarin/cowboy,cad627/cowboy,cad627/cowboy,bobos/ecweb