Replace event-stream with merge-stream
Replace event-stream with merge-stream

Closes #462

irenekay/Gulpjs-Webtest,pdg6805/gulp,GoodBoyDigital/gulp,lcoder/gulp,jmm/gulp,stoeffel/gulp,youprofit/gulp,hckhanh/gulp,klausbayrhammer/gulp,zensh/gulp,michaelgena/gulp,lanbin/gulp,liangzhien/gulp,MichaelFBA/gulp,tuzilingdang/gulp,jonsterling/gulp,imjerrybao/gulp,mohislm/gulp,midgethoen/gulp,brilliun/gulp,maxhollmann/gulp,Coaxial/gulp,caseytrombley/gulp,breyed/gulp,gavioto/gulp,foresthz/gulp,minodisk/gulp,cgvarela/gulp,ankita-kumari/gulp,borellaster/gulp,chrismoulton/gulp,XiaoLongW/gulp,fengjianjunstudy/gulp,MarcBT/gulp,preco21/gulp,Rorchach/gulp,lcoder/gulp,MarcBT/gulp,JsAaron/gulp,mad-aran/gulp,JsAaron/gulp,preco21/gulp,AtChina/gulp,silverbux/gulp,aaron-goshine/gulp,iSC-Labs/gulp,seedtigo/gulp,iSC-Labs/gulp,mikehaas763/gulp,bobintornado/gulp,zpao/gulp,doginthehat/gulp,es128/gulp,VANITAX/gulp,callumacrae/gulp,maxhollmann/gulp,eaglesjava/gulp,jhsu/gulp,jonsterling/gulp,stevemao/gulp,songshuang00/gulp,zensh/gulp,AtChina/gulp,wbinnssmith/gulp,soliury/gulp,duanying0818/gulp,Tiger66639/gulp,minodisk/gulp,wjb12/gulp,edisplay/gulp,tkvern/gulp,donglegend/gulp,jhsu/gulp,flackend/gulp,michaelgena/gulp,GoodBoyDigital/gulp,zpao/gulp,yugle7/gulp,tkvern/gulp,Tiger66639/gulp,tfennelly/gulp,tfennelly/gulp,es128/gulp,pdg6805/gulp,songshuang00/gulp,cgourlay/gulp,ankita-kumari/gulp,yugle7/gulp,yonglehou/gulp,SimenB/gulp,PNW3DEV/gulp,codeclimate-demo/gulp,mohislm/gulp,anorthwolf/gulp,Zagorakiss/gulp,PNW3DEV/gulp,cgourlay/gulp,AleksueiR/gulp,r14r/fork_javascript_gulp,eaglesjava/gulp,JimiHFord/gulp,zongkelong/gulp,AlexKomrakov/gulp,demohi/gulp,snidima/gulp,tksander/gulp,pdehaan/gulp,nmccready/gulp,imjerrybao/gulp,prashant-andani/gulp,thejameskyle/gulp,romario333/gulp,JimiHFord/gulp,codeclimate-demo/gulp,huzion/gulp,stevemao/gulp,nmccready/gulp,seedtigo/gulp,doginthehat/gulp,pppp22591558/gulp,SimenB/gulp,pH200/jsrun,bobintornado/gulp,kt3k/gulp,mariuszskon/gulp,edisplay/gulp,BogusCurry/gulp,yonglehou/gulp,huzion/gulp,Zagorakiss/gulp,foresthz/gulp,fengjianjunstudy/gulp,benweet/gulp,brilliun/gulp,bmds/gulp,mikehaas763/gulp,ged/gulp,ybg555/gulp,Coaxial/gulp,AleksueiR/gulp,mad-aran/gulp,prashant-andani/gulp,midgethoen/gulp,pppp22591558/gulp,BogusCurry/gulp,sonjudan/gulp,Rorchach/gulp,snidima/gulp,tuzilingdang/gulp,KillerDesigner/gulp,ged/gulp,yochannah/gulp,breyed/gulp,ancchaimongkon/gulp,pdehaan/gulp,klausbayrhammer/gulp,Teino1978-Corp/Teino1978-Corp-gulp,wjb12/gulp,benweet/gulp,ruspython/gulp,borellaster/gulp,flackend/gulp,frankwallis/gulp,AlexKomrakov/gulp,IrvBriscoe/gulp,frankwallis/gulp,gulpjs/gulp,gavioto/gulp,rlugojr/gulp,geltoncruz/gulp,jaeh/gulp,Teino1978-Corp/Teino1978-Corp-gulp,romario333/gulp,ruspython/gulp,lanbin/gulp,moander/gulp,bmds/gulp,thejameskyle/gulp,aaron-goshine/gulp,sttk/gulp,IrvBriscoe/gulp,ajwebb/gulp,chrismoulton/gulp,yochannah/gulp,moander/gulp,xuxinpie/gulp,bORm/gulp,caseytrombley/gulp,bORm/gulp,ajwebb/gulp,geltoncruz/gulp,sonjudan/gulp,callumacrae/gulp,KillerDesigner/gulp,duanying0818/gulp,youprofit/gulp,hckhanh/gulp,XiaoLongW/gulp,mariuszskon/gulp,VANITAX/gulp,vineethawal/gulp,pH200/jsrun,crspiccin/gulp,ancchaimongkon/gulp,r14r/fork_javascript_gulp,zongkelong/gulp,silverbux/gulp,crspiccin/gulp,anorthwolf/gulp,vineethawal/gulp,wbinnssmith/gulp,cgvarela/gulp,tksander/gulp,liangzhien/gulp,jaeh/gulp,xuxinpie/gulp,MichaelFBA/gulp,rlugojr/gulp,jmm/gulp,soliury/gulp,ybg555/gulp,donglegend/gulp