Updated changelog for 2.4.0-RC1.
Updated changelog for 2.4.0-RC1.

codelion/okhttp,ooon/okhttp,jokerzzzz/okhttp,layerhq/okhttp,lockerfish/okhttp,sam-yr/okhttp,xuIcream/okhttp,jrodbx/okhttp,lypdemo/okhttp,yangzilong1986/okhttp,amikey/okhttp,wanjingyan001/okhttp,LittleApple2015/okhttp,ChanJLee/okhttp,NerrickT/okhttp,xuIcream/okhttp,qinxiandiqi/okhttp,jovezhougang/okhttp,tiarebalbi/okhttp,mikandi/okhttp,danielgomezrico/okhttp,sam-yr/okhttp,SunnyDayDev/okhttp,yuhuayi/okhttp,adithyaphilip/okhttp,SashiAsakura/okhttp,marenzo/okhttp,yschimke/okhttp,309746069/okhttp,minakov/okhttp,wfxiang08/okhttp,YlJava110/okhttp,ysjian/okhttp,artem-zinnatullin/okhttp,rschilling/okhttp,teffy/okhttp,cketti/okhttp,Jinghualun/okhttp,hisery/okhttp,jrodbx/okhttp,yschimke/okhttp,allen0125/okhttp,damien5314/okhttp,LittleApple2015/okhttp,wlrhnh-David/okhttp,ptornhult/okhttp,SunnyDayDev/okhttp,jinmiao0601/okhttp,PatrickDattilio/okhttp,VioletLife/okhttp,zheng1733/okhttp,cnoldtree/okhttp,tiarebalbi/okhttp,rschilling/okhttp,309746069/okhttp,v7lin/okhttp,JohnTsaiAndroid/okhttp,sunshinecoast/okhttp,YlJava110/okhttp,xph906/NetProphet,ze-pequeno/okhttp,jovezhougang/okhttp,yuhuayi/okhttp,joansmith/okhttp,292388900/okhttp,jiyiren/okhttp,elijah513/okhttp,chaitanyajun12/okhttp,Voxer/okhttp,adithyaphilip/okhttp,nachocove/okhttp,ruikong/okhttp,ijidan/okhttp,sam-yr/okhttp,wfs3006/okhttp,joansmith/okhttp,lobo12/okhttp,ysjian/okhttp,cmzy/okhttp,zhupengGitHub/okhttp,wendelas/okhttp,bestwpw/okhttp,marcelobns/okhttp,SOFTPOWER1991/okhttp,Gaantz/okhttp,icefoggy/okhttp,elijah513/okhttp,v7lin/okhttp,enlyn/okhttp,NerrickT/okhttp,LittleApple2015/okhttp,huluhaziqi/okhttp,VideoTec/okhttp,amikey/okhttp,Cryhelyxx/okhttp,ZhQYuan/okhttp,ankit3005/okhttp,ptornhult/okhttp,lobo12/okhttp,adithyaphilip/okhttp,Synix/okhttp,ansman/okhttp,ijidan/okhttp,LB6264/okhttp,shashankvaibhav/okhttp,fjg1989/okhttp,StarRain/okhttp,mikandi/okhttp,yswheye/okhttp,zhupengGitHub/okhttp,qinxiandiqi/okhttp,snodnipper/okhttp,germanattanasio/okhttp,codelion/okhttp,mgp/okhttp,VikingDen/okhttp,junenn/okhttp,hisery/okhttp,ooon/okhttp,mjbenedict/okhttp,SOFTPOWER1991/okhttp,airbnb/okhttp,linyh1993/okhttp,marenzo/okhttp,felipecsl/okhttp,zace-yuan/okhttp,hanlonghxp/okhttp,ChinaKim/okhttp,apoorvmahajan/okhttp,StarRain/okhttp,ansman/okhttp,jiyiren/okhttp,huluhaziqi/okhttp,germanattanasio/okhttp,lockerfish/okhttp,ijidan/okhttp,teffy/okhttp,amikey/okhttp,Pannarrow/okhttp,layerhq/okhttp,xuIcream/okhttp,SOFTPOWER1991/okhttp,idelpivnitskiy/okhttp,chaitanyajun12/okhttp,tsdl2013/okhttp,jovezhougang/okhttp,yanqiangfire/okhttp,DeathPluto/okhttp,qingsong-xu/okhttp,jfcalcerrada/okhttp,snodnipper/okhttp,hgl888/okhttp,zmywly8866/okhttp,wfs3006/okhttp,yukuoyuan/okhttp,wfs3006/okhttp,HuangWenhuan0/okhttp,MichaelEvans/okhttp,zmarkan/okhttp,VioletLife/okhttp,b-cuts/okhttp,292388900/okhttp,zheng1733/okhttp,apoorvmahajan/okhttp,ze-pequeno/okhttp,yangshangwei/okhttp,wendelas/okhttp,Jinghualun/okhttp,airbnb/okhttp,Cryhelyxx/okhttp,yangzilong1986/okhttp,huluhaziqi/okhttp,xph906/NewOKHttp,SashiAsakura/okhttp,ChanJLee/okhttp,marcelobns/okhttp,292388900/okhttp,CharlieJiang/okhttp,marcelobns/okhttp,yukuoyuan/okhttp,allen0125/okhttp,Gaantz/okhttp,VioletLife/okhttp,SashiAsakura/okhttp,enlyn/okhttp,nachocove/okhttp,felipecsl/okhttp,yukuoyuan/okhttp,square/okhttp,lypdemo/okhttp,Voxer/okhttp,enlyn/okhttp,hesy007/okhttp,mjbenedict/okhttp,tsdl2013/okhttp,rschilling/okhttp,Synix/okhttp,Cryhelyxx/okhttp,zmarkan/okhttp,HuangWenhuan0/okhttp,zmarkan/okhttp,qingsong-xu/okhttp,LB6264/okhttp,allen0125/okhttp,jiyiren/okhttp,wfxiang08/okhttp,mgp/okhttp,nachocove/okhttp,DeathPluto/okhttp,jinmiao/okhttp,tiarebalbi/okhttp,ruikong/okhttp,qingsong-xu/okhttp,fjg1989/okhttp,snodnipper/okhttp,tsdl2013/okhttp,yangzilong1986/okhttp,ruikong/okhttp,jokerzzzz/okhttp,felipecsl/okhttp,DeathPluto/okhttp,KENJU/okhttp,b-cuts/okhttp,NerrickT/okhttp,Jinghualun/okhttp,jokerzzzz/okhttp,junenn/okhttp,ankit3005/okhttp,VikingDen/okhttp,Eagles2F/okhttp,square/okhttp,junenn/okhttp,JohnTsaiAndroid/okhttp,NightlyNexus/okhttp,liqk2014/okhttp,linyh1993/okhttp,CharlieJiang/okhttp,hesy007/okhttp,lockerfish/okhttp,ruhaly/okhttp,ooon/okhttp,sunshinecoast/okhttp,Eagles2F/okhttp,AmberWhiteSky/okhttp,yanqiangfire/okhttp,ChinaKim/okhttp,HuangWenhuan0/okhttp,Papuh/okhttp,liqk2014/okhttp,zace-yuan/okhttp,hgl888/okhttp,yswheye/okhttp,minakov/okhttp,jfcalcerrada/okhttp,square/okhttp,apoorvmahajan/okhttp,lobo12/okhttp,ruhaly/okhttp,yschimke/okhttp,wlrhnh-David/okhttp,jinmiao0601/okhttp,cketti/okhttp,hesy007/okhttp,ysjian/okhttp,KENJU/okhttp,KENJU/okhttp,nfuller/okhttp,marenzo/okhttp,xph906/NewOKHttp,huihui4045/okhttp,danielgomezrico/okhttp,Synix/okhttp,layerhq/okhttp,airbnb/okhttp,wlrhnh-David/okhttp,nfuller/okhttp,wfxiang08/okhttp,shashankvaibhav/okhttp,PatrickDattilio/okhttp,damien5314/okhttp,ZhQYuan/okhttp,cnoldtree/okhttp,elijah513/okhttp,xph906/NetProphet,zmywly8866/okhttp,jinmiao/okhttp,yangshangwei/okhttp,bestwpw/okhttp,AmberWhiteSky/okhttp,codelion/okhttp,ankit3005/okhttp,sunshinecoast/okhttp,ptornhult/okhttp,MichaelEvans/okhttp,ansman/okhttp,xubuhang/okhttp,hanlonghxp/okhttp,idelpivnitskiy/okhttp,ChinaKim/okhttp,mikandi/okhttp,mjbenedict/okhttp,Voxer/okhttp,yakatak/okhttp,LB6264/okhttp,JohnTsaiAndroid/okhttp,xph906/NewOKHttp,liqk2014/okhttp,jinmiao/okhttp,yakatak/okhttp,artem-zinnatullin/okhttp,lypdemo/okhttp,Gaantz/okhttp,YlJava110/okhttp,wendelas/okhttp,bestwpw/okhttp,hisery/okhttp,hgl888/okhttp,xubuhang/okhttp,NightlyNexus/okhttp,danielgomezrico/okhttp,jiekekeji/okhttp,shashankvaibhav/okhttp,yswheye/okhttp,mgp/okhttp,chaitanyajun12/okhttp,yuhuayi/okhttp,icefoggy/okhttp,MichaelEvans/okhttp,SunnyDayDev/okhttp,teffy/okhttp,Papuh/okhttp,minakov/okhttp,icefoggy/okhttp,damien5314/okhttp,VikingDen/okhttp,xubuhang/okhttp,jituo666/okhttp,VideoTec/okhttp,zmywly8866/okhttp,fjg1989/okhttp,jituo666/okhttp,ZhQYuan/okhttp,wanjingyan001/okhttp,Eagles2F/okhttp,NightlyNexus/okhttp,cketti/okhttp,xph906/NetProphet,Pannarrow/okhttp,VideoTec/okhttp,309746069/okhttp,cnoldtree/okhttp,yanqiangfire/okhttp,germanattanasio/okhttp,ruhaly/okhttp,jfcalcerrada/okhttp,hanlonghxp/okhttp,huihui4045/okhttp,yakatak/okhttp,zace-yuan/okhttp,v7lin/okhttp,huihui4045/okhttp,yangshangwei/okhttp,linyh1993/okhttp,jiekekeji/okhttp,apoorvmahajan/okhttp,jituo666/okhttp,zheng1733/okhttp,StarRain/okhttp,jrodbx/okhttp,Papuh/okhttp,cmzy/okhttp,idelpivnitskiy/okhttp,CharlieJiang/okhttp,nfuller/okhttp,wanjingyan001/okhttp,jinmiao0601/okhttp,AmberWhiteSky/okhttp,Pannarrow/okhttp,artem-zinnatullin/okhttp,joansmith/okhttp,ze-pequeno/okhttp,jiekekeji/okhttp,b-cuts/okhttp,ChanJLee/okhttp,qinxiandiqi/okhttp,PatrickDattilio/okhttp,zhupengGitHub/okhttp