Add support for progress callbacks of data requests.
Add support for progress callbacks of data requests.

Alamofire/Alamofire,Koalappp/Alamofire,Baza207/Alamofire,yimajo/Alamofire,latenitesoft/Alamofire,eneko/Alamofire,fireflyexperience/Alamofire,corinnekrych/Alamofire,luzefeng/Alamofire,icoreman/Alamofire,latenitesoft/Alamofire,youweit/Alamofire,AbelSu131/Alamofire,Swiftosis/Alamofire,Sgraffito/Alamofire,fullstackclub/Alamofire,leelili/Alamofire,cogddo/Alamofire,zzyy3321/Alamofire,zdw19840929/Alamofire,foxkillerli/Alamofire,lijie121210/Alamofire,Holmusk/Alamofire,ernestopino/Alamofire,vi3t0rmagalhaes/Alamofire,cesar-oyarzun-m/Alamofire,egeniq-forks/Alamofire,sunnry/Alamofire,Natoto/Alamofire,ywzw2013/Alamofire,jackeychens/Alamofire,j364960953/Alamofire,duanhjlt/Alamofire,jiwonsis/Alamofire,youweit/Alamofire,imjerrybao/Alamofire,alvincrisuy/Alamofire,richardPFisk/Alamofire,yaoxiaoyong/Alamofire,jackeychens/Alamofire,yujiaao/Alamofire,mcgrady20150318/Alamofire,christophercotton/Alamofire,Ribeiro/Alamofire,bestwpw/Alamofire,rjsamson/Alamofire,alex-learn/Alamofire,antigp/Alamofire,sunfei/Alamofire,SanChain/Alamofire,Noobish1/Alamofire,takeshineshiro/Alamofire,Vkt0r/Alamofire,muukii/Alamofire,followwind007/Alamofire,thebugcode/Alamofire,followwind007/Alamofire,BNakum/Alamofire,zuthan/Alamofire,fe9lix/Alamofire,rromanchuk/Alamofire,twobitlabs/Alamofire,pengleelove/Alamofire,Noobish1/Alamofire,Karumi/Alamofire-Result,triskybro/Alamofire,zhouguangjie/Alamofire,zhangyuhan0407/Alamofire,fe9lix/Alamofire,robskillington/Alamofire,tomco/Alamofire,agustindc-rga/Alamofire,Holmusk/Alamofire,nvh/Alamofire,kevin-zqw/Alamofire,LionHeart123/Alamofire,BlessNeo/Alamofire,rain1988/Alamofire,ikesyo/Alamofire,john-langley/Alamofire,limenglook/Alamofire,Screon/Alamofire,irealme/Alamofire,AnthonyMDev/Alamofire,rromanchuk/Alamofire,Cleverlance/Alamofire,aclissold/Alamofire,hazytint/Alamofire,morizotter/Alamofire,ShengQiangLiu/Alamofire,voidException/Alamofire,mathcamp/Alamofire,msdgwzhy6/Alamofire,isaacroldan/Alamofire,UIKit0/Alamofire,zhouguangjie/Alamofire,ArthurKK/Alamofire,harlanhaskins/Alamofire,pitatensai/Alamofire,isaacroldan/Alamofire,BearLion/Alamofire,zpz1237/Alamofire,bensonzhow/Alamofire,androidrivne/Alamofire,jiwonsis/Alamofire,Vkt0r/Alamofire,AnthonyMDev/Alamofire,kamoljan/Alamofire,yimouleng/Alamofire,zpz1237/Alamofire,yjkim/Alamofire,bnadim/Alamofire,dandalf/Alamofire,PhilJay/Alamofire,maxgoedjen/Alamofire,thebugcode/Alamofire,MaWenxing/Alamofire,meteochu/Alamofire,Lomotif/Alamofire,cnbin/Alamofire,johndpope/Alamofire,mathcamp/Alamofire,maxgoedjen/Alamofire,renavatio/Alamofire,jmkr/Alamofire,mbhuta/Alamofire,lclamotte/Alamofire,hnney/Alamofire,jam891/Alamofire,petereddy/Alamofire,zuthan/Alamofire,samritchie/Alamofire,Karumi/Alamofire-Result,AbelSu131/Alamofire,androidrivne/Alamofire,dawangjiaowolaixunshan/Alamofire,SampleLiao/Alamofire,wdxgtsh/Alamofire,leelili/Alamofire,iosheadhunter/Alamofire,tonyli508/AlamofireDomain,easyui/Alamofire,twobitlabs/Alamofire,nickygerritsen/Alamofire,althyg/Alamofire,jam891/Alamofire,hnney/Alamofire,Paul-van-Klaveren/Alamofire,aclissold/Alamofire,johndpope/Alamofire,adachic/Alamofire,Holmusk/Alamofire,fullstackclub/Alamofire,bnadim/Alamofire,chokett/Alamofire,lclamotte/Alamofire,SinnerSchraderMobileMirrors/Alamofire,richardPFisk/Alamofire,jmkr/Alamofire,jschmid/Alamofire,liuchungui/Alamofire,tomco/Alamofire,teamcarma/IOS-AlamofireDomain,john-langley/Alamofire,mishagray/Alamofire,lijie121210/Alamofire,meteochu/Alamofire,RHITJuniorProjects/Alamofire,Q42/Alamofire,i-miss-you/Alamofire,toohotz/Alamofire,yimajo/Alamofire,agustindc-rga/Alamofire,guipanizzon/Alamofire,mcgrady20150318/Alamofire,limenglook/Alamofire,antigp/Alamofire,brandenr/Alamofire,kiancheong/Alamofire,bscarano/Alamofire,leasual/Alamofire,zhangyuhan0407/Alamofire,easyui/Alamofire,cnbin/Alamofire,trauzti/Alamofire,liuchungui/Alamofire,PhilJay/Alamofire,BearLion/Alamofire,kiancheong/Alamofire,adachic/Alamofire,trauzti/Alamofire,ArthurKK/Alamofire,DreamHill/Alamofire,Cleverlance/Alamofire,voidException/Alamofire,morizotter/Alamofire,msdgwzhy6/Alamofire,BlessNeo/Alamofire,Lomotif/Alamofire,sarunw/Alamofire,nanthi1990/Alamofire,icepy/Alamofire,pocketworks/Alamofire,sai43/Alamofire,gauravds/Alamofire,Baza207/Alamofire,PhuocLinh/Alamofire,alvincrisuy/Alamofire,gauravds/Alamofire,koher/Alamofire,Paul-van-Klaveren/Alamofire,SanChain/Alamofire,rongl/Alamofire,pitatensai/Alamofire,bscarano/Alamofire,Staance/Alamofire,neonichu/Alamofire,duanhjlt/Alamofire,j364960953/Alamofire,danteteam/Alamofire,lumenlunae/Alamofire,luzefeng/Alamofire,DouKing/Alamofire,petereddy/Alamofire,Screon/Alamofire,machelix/Alamofire,LionHeart123/Alamofire,zzyy3321/Alamofire,muukii/Alamofire,irealme/Alamofire,althyg/Alamofire,DreamHill/Alamofire,renavatio/Alamofire,sai43/Alamofire,wdxgtsh/Alamofire,red3/Alamofire,Sgraffito/Alamofire,cogddo/Alamofire,yaoxiaoyong/Alamofire,libiao88/Alamofire,yujiaao/Alamofire,sarunw/Alamofire,Swiftosis/Alamofire,nanthi1990/Alamofire,jschmid/Alamofire,dandalf/Alamofire,DouKing/Alamofire,hanangellove/Alamofire,Gaantz/Alamofire,icepy/Alamofire,kamoljan/Alamofire,Farteen/Alamofire,rongl/Alamofire,Koalappp/Alamofire,neugartf/Alamofire,red3/Alamofire,st3fan/Alamofire,lumenlunae/Alamofire,davepatterson/Alamofire,imjerrybao/Alamofire,harlanhaskins/Alamofire,ikesyo/Alamofire,brandenr/Alamofire,tonyli508/AlamofireDomain,sunfei/Alamofire,dgdosen/Alamofire,neonichu/Alamofire,neugartf/Alamofire,bensonzhow/Alamofire,rjsamson/Alamofire,yimouleng/Alamofire,cmpt275group9/Alamofire,nathankot/Alamofire,guipanizzon/Alamofire,nathankot/Alamofire,roadfire/Alamofire,ethan-fang/Alamofire,SinnerSchraderMobileMirrors/Alamofire,yuByte/Alamofire,toohotz/Alamofire,foxkillerli/Alamofire,tokorom/Alamofire,lovesunstar/Alamofire,iosheadhunter/Alamofire,mishagray/Alamofire,pengleelove/Alamofire,WangZhuo2015/Alamofire,davepatterson/Alamofire,samritchie/Alamofire,suxinde2009/Alamofire,i-miss-you/Alamofire,PhuocLinh/Alamofire,eneko/Alamofire,yjkim/Alamofire,Q42/Alamofire,nickygerritsen/Alamofire,lovesunstar/Alamofire,rafaelvg/Alamofire,zdw19840929/Alamofire,Staance/Alamofire,sidetlw/Alamofire,ThornTechPublic/Alamofire,vi3t0rmagalhaes/Alamofire,kevin-zqw/Alamofire,st3fan/Alamofire,Gaantz/Alamofire,alex-learn/Alamofire,revdotcom/Alamofire,SampleLiao/Alamofire,Ribeiro/Alamofire,smalldu/Alamofire,hanangellove/Alamofire,UIKit0/Alamofire,pocketworks/Alamofire,cmpt275group9/Alamofire,libiao88/Alamofire,teamcarma/IOS-AlamofireDomain,revdotcom/Alamofire,RyanCodes/Alamofire,chokett/Alamofire,smalldu/Alamofire,ThornTechPublic/Alamofire,mbhuta/Alamofire,rain1988/Alamofire,yeahdongcn/Alamofire,icoreman/Alamofire,ethan-fang/Alamofire,0x73/Alamofire,dgdosen/Alamofire,christophercotton/Alamofire,koher/Alamofire,suxinde2009/Alamofire,ywzw2013/Alamofire,sunnry/Alamofire,machelix/Alamofire,tharhtet/Alamofire,Natoto/Alamofire,cesar-oyarzun-m/Alamofire,rafaelvg/Alamofire,MaWenxing/Alamofire,yuByte/Alamofire,robskillington/Alamofire,takeshineshiro/Alamofire,seem-sky/Alamofire,Alamofire/Alamofire,sidetlw/Alamofire,fireflyexperience/Alamofire,BNakum/Alamofire,bestwpw/Alamofire,hazytint/Alamofire,tokorom/Alamofire,ernestopino/Alamofire,leasual/Alamofire,WangZhuo2015/Alamofire,RyanCodes/Alamofire,egeniq-forks/Alamofire,dawangjiaowolaixunshan/Alamofire,0x73/Alamofire,ShengQiangLiu/Alamofire,triskybro/Alamofire,corinnekrych/Alamofire,Farteen/Alamofire,danteteam/Alamofire