Only output colour escapes when attached to a tty
Only output colour escapes when attached to a tty

OnePaaS/weave,aaam/weave,BWITS/weave,OnePaaS/weave,paladin74/weave,achanda/weave,2opremio/weave,narry/weave,OnePaaS/weave,awh/weave,philipz/weave,aaam/weave,squaremo/weave,philipz/weave,squaremo/weave,paladin74/weave,paulbellamy/weave,cgvarela/weave,aaam/weave,awh/weave,achanda/weave,2opremio/weave,awanke/weave,kidaa/weave,ycaihua/weave,inercia/weave,inercia/weave,paulbellamy/weave,achanda/weave,2opremio/weave,paladin74/weave,kidaa/weave,awanke/weave,tomwilkie/weave,2opremio/weave,tomwilkie/weave,squaremo/weave,n054/weave,awanke/weave,beni55/weave,tomwilkie/weave,n054/weave,cgvarela/weave,OnePaaS/weave,errordeveloper/weave,weaveworks/weave,ycaihua/weave,dpw/weave,bboreham/weave,paladin74/weave,bboreham/weave,inercia/weave,ycaihua/weave,bboreham/weave,rade/weave,philipz/weave,tomwilkie/weave,awanke/weave,rade/weave,awh/weave,errordeveloper/weave,achanda/weave,BWITS/weave,inercia/weave,cgvarela/weave,kidaa/weave,rade/weave,rade/weave,tomwilkie/weave,n054/weave,weaveworks/weave,beni55/weave,BWITS/weave,errordeveloper/weave,2opremio/weave,awanke/weave,beni55/weave,ycaihua/weave,narry/weave,errordeveloper/weave,squaremo/weave,kidaa/weave,inercia/weave,n054/weave,aaam/weave,bboreham/weave,philipz/weave,kidaa/weave,squaremo/weave,beni55/weave,awh/weave,cgvarela/weave,cgvarela/weave,BWITS/weave,dpw/weave,bboreham/weave,OnePaaS/weave,ycaihua/weave,narry/weave,paladin74/weave,narry/weave,dpw/weave,dpw/weave,narry/weave,achanda/weave,philipz/weave,aaam/weave,n054/weave,paulbellamy/weave,dpw/weave,rade/weave,paulbellamy/weave,BWITS/weave,weaveworks/weave,weaveworks/weave,awh/weave,beni55/weave,errordeveloper/weave