Make Optional extensions internal
Make Optional extensions internal

Required by the compiler.

ioshger0125/ReactiveCocoa,loupman/ReactiveCocoa,Ethan89/ReactiveCocoa,Khan/ReactiveCocoa,yoichitgy/ReactiveCocoa,esttorhe/ReactiveCocoa,llb1119/test,monkeydbobo/ReactiveCocoa,ztchena/ReactiveCocoa,taylormoonxu/ReactiveCocoa,SanChain/ReactiveCocoa,chieryw/ReactiveCocoa,mattpetters/ReactiveCocoa,Juraldinio/ReactiveCocoa,leelili/ReactiveCocoa,CCOOOOLL/ReactiveCocoa,chao95957/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,LHDsimon/ReactiveCocoa,stupidfive/ReactiveCocoa,taylormoonxu/ReactiveCocoa,esttorhe/ReactiveCocoa,FelixYin66/ReactiveCocoa,juliangrosshauser/ReactiveCocoa,yonekawa/ReactiveCocoa,howandhao/ReactiveCocoa,qq644531343/ReactiveCocoa,GuitarPlayer-Ma/ReactiveCocoa,monkeydbobo/ReactiveCocoa,zhiwen1024/ReactiveCocoa,AlanJN/ReactiveCocoa,takeshineshiro/ReactiveCocoa,longv2go/ReactiveCocoa,almassapargali/ReactiveCocoa,sugar2010/ReactiveCocoa,zhaoguohui/ReactiveCocoa,brasbug/ReactiveCocoa,tiger8888/ReactiveCocoa,xumaolin/ReactiveCocoa,Eveian/ReactiveCocoa,CQXfly/ReactiveCocoa,Ethan89/ReactiveCocoa,zhigang1992/ReactiveCocoa,JohnJin007/ReactiveCocoa,natestedman/ReactiveCocoa,qq644531343/ReactiveCocoa,cstars135/ReactiveCocoa,ikesyo/ReactiveCocoa,dz1111/ReactiveCocoa,towik/ReactiveCocoa,sdhzwm/ReactiveCocoa,ddc391565320/ReactiveCocoa,JohnJin007/ReactiveCocoa,smilypeda/ReactiveCocoa,zzqiltw/ReactiveCocoa,nikita-leonov/ReactiveCocoa,kaylio/ReactiveCocoa,eyu1988/ReactiveCocoa,imkerberos/ReactiveCocoa,yangshengchaoios/ReactiveCocoa,luerhouhou/ReactiveCocoa,eyu1988/ReactiveCocoa,xiaobing2007/ReactiveCocoa,Farteen/ReactiveCocoa,Rupert-RR/ReactiveCocoa,OneSmallTree/ReactiveCocoa,jackywpy/ReactiveCocoa,SanChain/ReactiveCocoa,vincentiss/ReactiveCocoa,leichunfeng/ReactiveCocoa,xiaobing2007/ReactiveCocoa,sujeking/ReactiveCocoa,almassapargali/ReactiveCocoa,j364960953/ReactiveCocoa,yaoxiaoyong/ReactiveCocoa,sugar2010/ReactiveCocoa,nickcheng/ReactiveCocoa,dz1111/ReactiveCocoa,ceekayel/ReactiveCocoa,PSPDFKit-labs/ReactiveCocoa,KJin99/ReactiveCocoa,paulyoung/ReactiveCocoa,CCOOOOLL/ReactiveCocoa,libiao88/ReactiveCocoa,ohwutup/ReactiveCocoa,bensonday/ReactiveCocoa,ioshger0125/ReactiveCocoa,paulyoung/ReactiveCocoa,hj3938/ReactiveCocoa,shaohung001/ReactiveCocoa,GuitarPlayer-Ma/ReactiveCocoa,victorlin/ReactiveCocoa,ikesyo/ReactiveCocoa,zzzworm/ReactiveCocoa,windgo/ReactiveCocoa,brasbug/ReactiveCocoa,mtxs007/ReactiveCocoa,isghe/ReactiveCocoa,CQXfly/ReactiveCocoa,hoanganh6491/ReactiveCocoa,WEIBP/ReactiveCocoa,OneSmallTree/ReactiveCocoa,shuxiashusheng/ReactiveCocoa,leichunfeng/ReactiveCocoa,yangyangluoluo/ReactiveCocoa,hoanganh6491/ReactiveCocoa,xiaoliyang/ReactiveCocoa,ddc391565320/ReactiveCocoa,towik/ReactiveCocoa,zzqiltw/ReactiveCocoa,fhchina/ReactiveCocoa,KuPai32G/ReactiveCocoa,mattpetters/ReactiveCocoa,200895045/ReactiveCocoa,yoichitgy/ReactiveCocoa,juliangrosshauser/ReactiveCocoa,natan/ReactiveCocoa,chieryw/ReactiveCocoa,lixar/ReactiveCocoa,wpstarnice/ReactiveCocoa,BrooksWon/ReactiveCocoa,mxxiv/ReactiveCocoa,Ricowere/ReactiveCocoa,victorlin/ReactiveCocoa,beni55/ReactiveCocoa,zhigang1992/ReactiveCocoa,huiping192/ReactiveCocoa,hilllinux/ReactiveCocoa,jsslai/ReactiveCocoa,emodeqidao/ReactiveCocoa,dskatz22/ReactiveCocoa,itschaitanya/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,Eveian/ReactiveCocoa,jsslai/ReactiveCocoa,valleyman86/ReactiveCocoa,Farteen/ReactiveCocoa,shuxiashusheng/ReactiveCocoa,natestedman/ReactiveCocoa,alvinvarghese/ReactiveCocoa,goodheart/ReactiveCocoa,zhiwen1024/ReactiveCocoa,libiao88/ReactiveCocoa,vincentiss/ReactiveCocoa,buildo/ReactiveCocoa,fhchina/ReactiveCocoa,towik/ReactiveCocoa,esttorhe/ReactiveCocoa,windgo/ReactiveCocoa,leelili/ReactiveCocoa,bscarano/ReactiveCocoa,zhenlove/ReactiveCocoa,JackLian/ReactiveCocoa,xiaoliyang/ReactiveCocoa,clg0118/ReactiveCocoa,liufeigit/ReactiveCocoa,shaohung001/ReactiveCocoa,KJin99/ReactiveCocoa,huiping192/ReactiveCocoa,DreamHill/ReactiveCocoa,tiger8888/ReactiveCocoa,sujeking/ReactiveCocoa,ztchena/ReactiveCocoa,zxq3220122/ReactiveCocoa,qq644531343/ReactiveCocoa,andersio/ReactiveCocoa,kevin-zqw/ReactiveCocoa,msdgwzhy6/ReactiveCocoa,rpowelll/ReactiveCocoa,kiurentu/ReactiveCocoa,WEIBP/ReactiveCocoa,zhigang1992/ReactiveCocoa,zxq3220122/ReactiveCocoa,SanChain/ReactiveCocoa,shuxiashusheng/ReactiveCocoa,terry408911/ReactiveCocoa,sandyway/ReactiveCocoa,xulibao/ReactiveCocoa,LHDsimon/ReactiveCocoa,ericzhou2008/ReactiveCocoa,AlanJN/ReactiveCocoa,zhukaixy/ReactiveCocoa,DreamHill/ReactiveCocoa,mattpetters/ReactiveCocoa,BrooksWon/ReactiveCocoa,kevin-zqw/ReactiveCocoa,add715/ReactiveCocoa,gengjf/ReactiveCocoa,victorlin/ReactiveCocoa,bscarano/ReactiveCocoa,chieryw/ReactiveCocoa,kaylio/ReactiveCocoa,hilllinux/ReactiveCocoa,tornade0913/ReactiveCocoa,ddc391565320/ReactiveCocoa,200895045/ReactiveCocoa,llb1119/test,dskatz22/ReactiveCocoa,AndyZhaoHe/ReactiveCocoa,jsslai/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,tonyarnold/ReactiveCocoa,dullgrass/ReactiveCocoa,JackLian/ReactiveCocoa,SuPair/ReactiveCocoa,monkeydbobo/ReactiveCocoa,Liquidsoul/ReactiveCocoa,juliangrosshauser/ReactiveCocoa,wangqi211/ReactiveCocoa,LHDsimon/ReactiveCocoa,stupidfive/ReactiveCocoa,libiao88/ReactiveCocoa,jaylib/ReactiveCocoa,zxq3220122/ReactiveCocoa,ShawnLeee/ReactiveCocoa,ericzhou2008/ReactiveCocoa,luerhouhou/ReactiveCocoa,ericzhou2008/ReactiveCocoa,luerhouhou/ReactiveCocoa,gengjf/ReactiveCocoa,pzw224/ReactiveCocoa,richeterre/ReactiveCocoa,icepy/ReactiveCocoa,cogddo/ReactiveCocoa,kiurentu/ReactiveCocoa,longv2go/ReactiveCocoa,add715/ReactiveCocoa,xulibao/ReactiveCocoa,kiurentu/ReactiveCocoa,jrmiddle/ReactiveCocoa,natan/ReactiveCocoa,Liquidsoul/ReactiveCocoa,clg0118/ReactiveCocoa,tonyli508/ReactiveCocoa,jeelun/ReactiveCocoa,nickcheng/ReactiveCocoa,zhiwen1024/ReactiveCocoa,jam891/ReactiveCocoa,Ray0218/ReactiveCocoa,imkerberos/ReactiveCocoa,WEIBP/ReactiveCocoa,zhenlove/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,dullgrass/ReactiveCocoa,PSPDFKit-labs/ReactiveCocoa,tonyli508/ReactiveCocoa,Juraldinio/ReactiveCocoa,smilypeda/ReactiveCocoa,yangyangluoluo/ReactiveCocoa,alvinvarghese/ReactiveCocoa,hbucius/ReactiveCocoa,huiping192/ReactiveCocoa,tornade0913/ReactiveCocoa,Pingco/ReactiveCocoa,jam891/ReactiveCocoa,KuPai32G/ReactiveCocoa,Khan/ReactiveCocoa,cnbin/ReactiveCocoa,rpowelll/ReactiveCocoa,Ray0218/ReactiveCocoa,brasbug/ReactiveCocoa,dskatz22/ReactiveCocoa,Ricowere/ReactiveCocoa,yoichitgy/ReactiveCocoa,longv2go/ReactiveCocoa,stupidfive/ReactiveCocoa,ohwutup/ReactiveCocoa,leelili/ReactiveCocoa,bensonday/ReactiveCocoa,yonekawa/ReactiveCocoa,nikita-leonov/ReactiveCocoa,xulibao/ReactiveCocoa,mxxiv/ReactiveCocoa,dachaoisme/ReactiveCocoa,beni55/ReactiveCocoa,cstars135/ReactiveCocoa,alvinvarghese/ReactiveCocoa,esttorhe/ReactiveCocoa,JohnJin007/ReactiveCocoa,ShawnLeee/ReactiveCocoa,cnbin/ReactiveCocoa,liufeigit/ReactiveCocoa,zhukaixy/ReactiveCocoa,richeterre/ReactiveCocoa,jeelun/ReactiveCocoa,Pingco/ReactiveCocoa,buildo/ReactiveCocoa,dachaoisme/ReactiveCocoa,PSPDFKit-labs/ReactiveCocoa,stevielu/ReactiveCocoa,yonekawa/ReactiveCocoa,tonyli508/ReactiveCocoa,terry408911/ReactiveCocoa,hj3938/ReactiveCocoa,nikita-leonov/ReactiveCocoa,itschaitanya/ReactiveCocoa,CCOOOOLL/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,sandyway/ReactiveCocoa,BlessNeo/ReactiveCocoa,BlessNeo/ReactiveCocoa,bensonday/ReactiveCocoa,zzzworm/ReactiveCocoa,200895045/ReactiveCocoa,fhchina/ReactiveCocoa,loupman/ReactiveCocoa,cstars135/ReactiveCocoa,stevielu/ReactiveCocoa,xiaobing2007/ReactiveCocoa,sdhzwm/ReactiveCocoa,FelixYin66/ReactiveCocoa,yaoxiaoyong/ReactiveCocoa,goodheart/ReactiveCocoa,takeshineshiro/ReactiveCocoa,DreamHill/ReactiveCocoa,chao95957/ReactiveCocoa,hbucius/ReactiveCocoa,jaylib/ReactiveCocoa,sugar2010/ReactiveCocoa,jrmiddle/ReactiveCocoa,Rupert-RR/ReactiveCocoa,natestedman/ReactiveCocoa,ceekayel/ReactiveCocoa,windgo/ReactiveCocoa,andersio/ReactiveCocoa,wpstarnice/ReactiveCocoa,kaylio/ReactiveCocoa,Ray0218/ReactiveCocoa,nickcheng/ReactiveCocoa,walkingsmarts/ReactiveCocoa,walkingsmarts/ReactiveCocoa,JackLian/ReactiveCocoa,beni55/ReactiveCocoa,yizzuide/ReactiveCocoa,yaoxiaoyong/ReactiveCocoa,on99/ReactiveCocoa,buildo/ReactiveCocoa,yizzuide/ReactiveCocoa,liufeigit/ReactiveCocoa,BlessNeo/ReactiveCocoa,huiping192/ReactiveCocoa,calebd/ReactiveCocoa,OnTheWay1988/ReactiveCocoa,zhenlove/ReactiveCocoa,mxxiv/ReactiveCocoa,Farteen/ReactiveCocoa,Ricowere/ReactiveCocoa,kevin-zqw/ReactiveCocoa,j364960953/ReactiveCocoa,Liquidsoul/ReactiveCocoa,emodeqidao/ReactiveCocoa,yangshengchaoios/ReactiveCocoa,xumaolin/ReactiveCocoa,KuPai32G/ReactiveCocoa,yytong/ReactiveCocoa,calebd/ReactiveCocoa,add715/ReactiveCocoa,taylormoonxu/ReactiveCocoa,Khan/ReactiveCocoa,jaylib/ReactiveCocoa,tzongw/ReactiveCocoa,llb1119/test,yizzuide/ReactiveCocoa,msdgwzhy6/ReactiveCocoa,shaohung001/ReactiveCocoa,ioshger0125/ReactiveCocoa,rpowelll/ReactiveCocoa,emodeqidao/ReactiveCocoa,Ethan89/ReactiveCocoa,wpstarnice/ReactiveCocoa,jackywpy/ReactiveCocoa,gengjf/ReactiveCocoa,takeshineshiro/ReactiveCocoa,dz1111/ReactiveCocoa,zhaoguohui/ReactiveCocoa,OnTheWay1988/ReactiveCocoa,hoanganh6491/ReactiveCocoa,clg0118/ReactiveCocoa,FelixYin66/ReactiveCocoa,terry408911/ReactiveCocoa,RuiAAPeres/ReactiveCocoa,paulyoung/ReactiveCocoa,ShawnLeee/ReactiveCocoa,on99/ReactiveCocoa,valleyman86/ReactiveCocoa,hilllinux/ReactiveCocoa,itschaitanya/ReactiveCocoa,Pingco/ReactiveCocoa,CQXfly/ReactiveCocoa,Juraldinio/ReactiveCocoa,ceekayel/ReactiveCocoa,GuitarPlayer-Ma/ReactiveCocoa,on99/ReactiveCocoa,sdhzwm/ReactiveCocoa,zhukaixy/ReactiveCocoa,vincentiss/ReactiveCocoa,wangqi211/ReactiveCocoa,Ricowere/ReactiveCocoa,jrmiddle/ReactiveCocoa,OnTheWay1988/ReactiveCocoa,tonyarnold/ReactiveCocoa,hbucius/ReactiveCocoa,bscarano/ReactiveCocoa,AlanJN/ReactiveCocoa,dachaoisme/ReactiveCocoa,zzzworm/ReactiveCocoa,isghe/ReactiveCocoa,cnbin/ReactiveCocoa,tiger8888/ReactiveCocoa,pzw224/ReactiveCocoa,AndyZhaoHe/ReactiveCocoa,icepy/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,KJin99/ReactiveCocoa,tzongw/ReactiveCocoa,howandhao/ReactiveCocoa,natan/ReactiveCocoa,valleyman86/ReactiveCocoa,tonyarnold/ReactiveCocoa,j364960953/ReactiveCocoa,stevielu/ReactiveCocoa,SuPair/ReactiveCocoa,smilypeda/ReactiveCocoa,jaylib/ReactiveCocoa,calebd/ReactiveCocoa,OneSmallTree/ReactiveCocoa,pzw224/ReactiveCocoa,almassapargali/ReactiveCocoa,walkingsmarts/ReactiveCocoa,lixar/ReactiveCocoa,jam891/ReactiveCocoa,fanghao085/ReactiveCocoa,lixar/ReactiveCocoa,msdgwzhy6/ReactiveCocoa,xumaolin/ReactiveCocoa,DongDongDongDong/ReactiveCocoa,richeterre/ReactiveCocoa,howandhao/ReactiveCocoa,jackywpy/ReactiveCocoa,hj3938/ReactiveCocoa,ReactiveCocoa/ReactiveSwift,dullgrass/ReactiveCocoa,cogddo/ReactiveCocoa,fanghao085/ReactiveCocoa,icepy/ReactiveCocoa,mtxs007/ReactiveCocoa,andersio/ReactiveCocoa,yytong/ReactiveCocoa,SuPair/ReactiveCocoa,yangshengchaoios/ReactiveCocoa,cogddo/ReactiveCocoa,ohwutup/ReactiveCocoa,AndyZhaoHe/ReactiveCocoa,nickcheng/ReactiveCocoa,tzongw/ReactiveCocoa,zzqiltw/ReactiveCocoa,sujeking/ReactiveCocoa,fanghao085/ReactiveCocoa,sandyway/ReactiveCocoa,Eveian/ReactiveCocoa,loupman/ReactiveCocoa,Rupert-RR/ReactiveCocoa,leichunfeng/ReactiveCocoa,eyu1988/ReactiveCocoa,goodheart/ReactiveCocoa,mtxs007/ReactiveCocoa,ztchena/ReactiveCocoa,jeelun/ReactiveCocoa,tornade0913/ReactiveCocoa,yytong/ReactiveCocoa,chao95957/ReactiveCocoa,BrooksWon/ReactiveCocoa,xiaoliyang/ReactiveCocoa,imkerberos/ReactiveCocoa,wangqi211/ReactiveCocoa,yangyangluoluo/ReactiveCocoa,zhaoguohui/ReactiveCocoa,isghe/ReactiveCocoa