add changelog entry for 3.9
add changelog entry for 3.9

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