Update changelog for 2.5.0.
Update changelog for 2.5.0.

hgl888/okhttp,ansman/okhttp,jinmiao/okhttp,yakatak/okhttp,zace-yuan/okhttp,Synix/okhttp,lypdemo/okhttp,cketti/okhttp,rschilling/okhttp,marenzo/okhttp,joansmith/okhttp,rschilling/okhttp,fjg1989/okhttp,hisery/okhttp,Voxer/okhttp,wfs3006/okhttp,ze-pequeno/okhttp,jiyiren/okhttp,ze-pequeno/okhttp,yangshangwei/okhttp,rschilling/okhttp,ZhQYuan/okhttp,PatrickDattilio/okhttp,mjbenedict/okhttp,Papuh/okhttp,enlyn/okhttp,ansman/okhttp,danielgomezrico/okhttp,marenzo/okhttp,qinxiandiqi/okhttp,jokerzzzz/okhttp,nachocove/okhttp,NerrickT/okhttp,shashankvaibhav/okhttp,yakatak/okhttp,Synix/okhttp,square/okhttp,JohnTsaiAndroid/okhttp,danielgomezrico/okhttp,KENJU/okhttp,mjbenedict/okhttp,jokerzzzz/okhttp,linyh1993/okhttp,zhupengGitHub/okhttp,damien5314/okhttp,bestwpw/okhttp,tiarebalbi/okhttp,huihui4045/okhttp,wfxiang08/okhttp,VideoTec/okhttp,apoorvmahajan/okhttp,Voxer/okhttp,ijidan/okhttp,junenn/okhttp,zhupengGitHub/okhttp,wlrhnh-David/okhttp,damien5314/okhttp,nachocove/okhttp,artem-zinnatullin/okhttp,wlrhnh-David/okhttp,hisery/okhttp,wfs3006/okhttp,qingsong-xu/okhttp,Eagles2F/okhttp,ankit3005/okhttp,jinmiao/okhttp,chaitanyajun12/okhttp,qingsong-xu/okhttp,xph906/NewOKHttp,enlyn/okhttp,xuIcream/okhttp,yanqiangfire/okhttp,xph906/NewOKHttp,codelion/okhttp,yangshangwei/okhttp,Cryhelyxx/okhttp,qinxiandiqi/okhttp,hgl888/okhttp,jokerzzzz/okhttp,marenzo/okhttp,yschimke/okhttp,AmberWhiteSky/okhttp,mjbenedict/okhttp,tiarebalbi/okhttp,lockerfish/okhttp,ooon/okhttp,felipecsl/okhttp,Cryhelyxx/okhttp,shashankvaibhav/okhttp,SashiAsakura/okhttp,hesy007/okhttp,nfuller/okhttp,Pannarrow/okhttp,ChanJLee/okhttp,Papuh/okhttp,PatrickDattilio/okhttp,VikingDen/okhttp,ze-pequeno/okhttp,jrodbx/okhttp,shashankvaibhav/okhttp,hesy007/okhttp,chaitanyajun12/okhttp,xph906/NetProphet,xph906/NewOKHttp,yukuoyuan/okhttp,b-cuts/okhttp,square/okhttp,VikingDen/okhttp,yangshangwei/okhttp,hesy007/okhttp,PatrickDattilio/okhttp,zmywly8866/okhttp,felipecsl/okhttp,309746069/okhttp,NightlyNexus/okhttp,cnoldtree/okhttp,VioletLife/okhttp,Pannarrow/okhttp,junenn/okhttp,zmywly8866/okhttp,joansmith/okhttp,SashiAsakura/okhttp,ChinaKim/okhttp,wfs3006/okhttp,Jinghualun/okhttp,ruhaly/okhttp,wanjingyan001/okhttp,jrodbx/okhttp,ptornhult/okhttp,cnoldtree/okhttp,ooon/okhttp,fjg1989/okhttp,ruikong/okhttp,jiyiren/okhttp,ruhaly/okhttp,nachocove/okhttp,Voxer/okhttp,cketti/okhttp,yukuoyuan/okhttp,snodnipper/okhttp,sunshinecoast/okhttp,SashiAsakura/okhttp,Eagles2F/okhttp,VideoTec/okhttp,square/okhttp,yschimke/okhttp,linyh1993/okhttp,NerrickT/okhttp,wfxiang08/okhttp,artem-zinnatullin/okhttp,ankit3005/okhttp,yukuoyuan/okhttp,cnoldtree/okhttp,codelion/okhttp,hanlonghxp/okhttp,LittleApple2015/okhttp,v7lin/okhttp,germanattanasio/okhttp,ankit3005/okhttp,VioletLife/okhttp,bestwpw/okhttp,jiyiren/okhttp,SunnyDayDev/okhttp,JohnTsaiAndroid/okhttp,v7lin/okhttp,danielgomezrico/okhttp,Pannarrow/okhttp,LittleApple2015/okhttp,ooon/okhttp,germanattanasio/okhttp,apoorvmahajan/okhttp,309746069/okhttp,Synix/okhttp,xuIcream/okhttp,ruhaly/okhttp,apoorvmahajan/okhttp,Papuh/okhttp,Jinghualun/okhttp,b-cuts/okhttp,yanqiangfire/okhttp,cmzy/okhttp,qingsong-xu/okhttp,germanattanasio/okhttp,teffy/okhttp,yschimke/okhttp,jinmiao/okhttp,damien5314/okhttp,ptornhult/okhttp,ZhQYuan/okhttp,lypdemo/okhttp,lockerfish/okhttp,AmberWhiteSky/okhttp,hgl888/okhttp,snodnipper/okhttp,nfuller/okhttp,Jinghualun/okhttp,zmywly8866/okhttp,xph906/NetProphet,AmberWhiteSky/okhttp,ruikong/okhttp,nfuller/okhttp,ptornhult/okhttp,artem-zinnatullin/okhttp,jinmiao0601/okhttp,tiarebalbi/okhttp,zace-yuan/okhttp,jrodbx/okhttp,VioletLife/okhttp,Eagles2F/okhttp,NightlyNexus/okhttp,fjg1989/okhttp,xuIcream/okhttp,yakatak/okhttp,snodnipper/okhttp,hanlonghxp/okhttp,cketti/okhttp,zmarkan/okhttp,v7lin/okhttp,LittleApple2015/okhttp,hanlonghxp/okhttp,ansman/okhttp,zace-yuan/okhttp,joansmith/okhttp,309746069/okhttp,ChinaKim/okhttp,sunshinecoast/okhttp,sunshinecoast/okhttp,KENJU/okhttp,lockerfish/okhttp,huihui4045/okhttp,NerrickT/okhttp,ijidan/okhttp,yanqiangfire/okhttp,jinmiao0601/okhttp,junenn/okhttp,b-cuts/okhttp,KENJU/okhttp,jinmiao0601/okhttp,xph906/NetProphet,zhupengGitHub/okhttp,Cryhelyxx/okhttp,wanjingyan001/okhttp,wanjingyan001/okhttp,huihui4045/okhttp,ChinaKim/okhttp,teffy/okhttp,wfxiang08/okhttp,wlrhnh-David/okhttp,teffy/okhttp,amikey/okhttp,apoorvmahajan/okhttp,ijidan/okhttp,felipecsl/okhttp,ZhQYuan/okhttp,JohnTsaiAndroid/okhttp,lypdemo/okhttp,codelion/okhttp,VideoTec/okhttp,amikey/okhttp,SunnyDayDev/okhttp,enlyn/okhttp,cmzy/okhttp,NightlyNexus/okhttp,linyh1993/okhttp,bestwpw/okhttp,chaitanyajun12/okhttp,VikingDen/okhttp,zmarkan/okhttp,qinxiandiqi/okhttp,ChanJLee/okhttp,ruikong/okhttp,SunnyDayDev/okhttp,hisery/okhttp,amikey/okhttp,ChanJLee/okhttp,zmarkan/okhttp