pushed all hasOwnProperty checks into _.keys, speeding _.keys up by about 25%, and using it to simplify other functions: _.each, _.isEmpty, _.functions
pushed all hasOwnProperty checks into _.keys, speeding _.keys up by about 25%, and using it to simplify other functions: _.each, _.isEmpty, _.functions

jdelbello/underscore,yekg880809/underscore,craigmichaelmartin/underscore,benweet/lodash,kanso/underscore,IveWong/lodash,xiwc/lodash,msmorgan/lodash,liyandalmllml/underscore,neouser99/lodash,Droogans/lodash,jonot/underscore,WangRex/underscore,mjosh954/lodash,andersonaguiar/lodash,snackshen/underscore,af7/lodash,falqas/underscore,Xotic750/lodash,cintiamh/underscore,ElseZhang/underscore,AndBicScadMedia/lodash,Feiyang1/underscore,enng0227/lodash,developer-prosenjit/lodash,gdi2290/lodash,documentcloud/underscore,rlugojr/underscore,AndBicScadMedia/lodash,kairyan/underscore,leolin1229/lodash,ajefremovs/lodash,IveWong/lodash,imjerrybao/lodash,beaugunderson/lodash,1800joe/underscore,julianocomg/lodash,xixilive/lodash,jianganglu/underscore,dkusch/underscore,cgvarela/underscore,hackreactor/underscore,dgoncalves1/lodash,craigmichaelmartin/underscore,therebelbeta/lodash,oss6/underscore,gougouGet/underscore,sdwang/underscore,krrg/lodash,xixilive/lodash,ligson/underscore,andersonaguiar/lodash,greyhwndz/underscore,BernhardRode/lodash,tquetano-r7/lodash,Tim-Zhang/underscore,dgoncalves1/lodash,documentcloud/underscore,woldie/lodash,hafeez-syed/lodash,AndBicScadMedia/lodash,tejokumar/lodash,JoaquinSiabra/underscore,paulfalgout/underscore,af7/lodash,studiowangfei/lodash,zhangguangyong/underscore,prawnsalad/lodash,ror/lodash,mitar/underscore,felixshu/lodash,megawac/underscore,Yangani/underscore,codydaig/lodash,dyx/underscore,yuhualingfeng/underscore,LiskHQ/underscore,boneskull/lodash,veg/underscore,Gimcrack/underscore,Feiyang1/underscore,developer-prosenjit/lodash,MaxPRafferty/lodash,krrg/lodash,polandeme/underscore,zestia/lodash,tgriesser/lodash,jasnell/lodash,r14r/fork_javascript_lodash,julianocomg/lodash,huzion/underscore,cintiamh/underscore,ryantenney/underscore,jridgewell/underscore,eaglesjava/underscore,RepmujNetsik/underscore,naoina/lodash,michaelficarra/underscore,steelsojka/lodash,AneesMohammed/lodash,platinumazure/underscore,jpalomar/underscore,lqjack/underscore,gougouGet/underscore,jpalomar/underscore,Lottid/lodash,Moykn/lodash,nsamarcos/lodash,lis186/underscore,javiosyc/lodash,hackreactor/underscore,shaunxcode/phutility,IveWong/lodash,nsamarcos/lodash,lzheng571/lodash,jolthoff/underscore,joshuaprior/lodash,tquetano-r7/lodash,vincent1988/underscore,r14r/fork_javascript_lodash,youprofit/lodash,huangnan1/2016gitStudy,phillipalexander/lodash,jacwright/lodash,lis186/underscore,jordanwink201/underscore,justintung/lodash,premkumargithub/underscore,PhiLhoSoft/lodash,mairasala/underscore,PhiLhoSoft/lodash,huyinghuan/lodash,bkillenit/underscore,snackshen/underscore,aziz-boudi4/underscore,BernhardRode/lodash,singhsterabhi/underscore,bailus/underscore,Andrey-Pavlov/lodash,SeriaWei/underscore,Lottid/lodash,Droogans/lodash,jzning-martian/lodash,jordanwink201/underscore,Forever8/underscore,npmcomponent/component-underscore,ryanwholey/underscore,mdboop/underscore,jonot/underscore,huzion/underscore,Moykn/lodash,JoaquinSiabra/underscore,mjosh954/lodash,Tim-Zhang/underscore,jshanson7/lodash,beaugunderson/lodash,SerenoShen/underscore,jashkenas/underscore,justintung/lodash,tquetano-r7/lodash,naoina/lodash,ror/lodash,PhiLhoSoft/lodash,lzheng571/lodash,natac13/underscore,rtorr/lodash,debutt/underscore,LiskHQ/underscore,stewx/lodash,keepgoingwm/underscore,felixshu/lodash,remy/underscore,stewx/lodash,jridgewell/underscore,bnicart/lodash,kairyan/underscore,RepmujNetsik/underscore,jzning-martian/lodash,nbellowe/lodash,rlugojr/lodash,polandeme/underscore,krrg/lodash,Andrey-Pavlov/lodash,Xotic750/lodash,zhangguangyong/lodash,reggi/lodash,bnicart/lodash,nbellowe/lodash,jiankers/underscore,joshuaprior/lodash,tgriesser/lodash,lucasfanning/underscore,benweet/lodash,nickkneafsey/underscore,gdi2290/lodash,neouser99/lodash,tejokumar/lodash,kuychaco/underscore,greyhwndz/lodash,woldie/lodash,kwangkim/underscore,beenlee/underscore,thisismygithub/underscore,liminghui/underscore,rtorr/lodash,youprofit/underscore,phillipalexander/lodash,Aplopio/underscore,schnerd/lodash,jolthoff/underscore,mjosh954/lodash,dfurtado/underscore,roychen-7/underscore,xiwc/lodash,debutt/underscore,hafeez-syed/lodash,akre54/underscore,AneesMohammed/lodash,thisismygithub/underscore,youprofit/underscore,shaunxcode/phutility,boneskull/lodash,rlugojr/lodash,jshanson7/lodash,samuelbeek/lodash,greyhwndz/underscore,Gimcrack/underscore,gutenye/lodash,michaelficarra/underscore,justintung/lodash,braddunbar/underscore,MaxPRafferty/lodash,rlugojr/underscore,xiaoqiang730730/underscore,mjhasbach/underscore,addyosmani/underscore,polarbird/lodash,ereddate/underscore,hitesh97/lodash,ktmud/lodash,ryantenney/underscore,lekoaf/lodash,strongconjunctions/underscore,mshoaibraja/lodash,ElseZhang/underscore,samuelbeek/lodash,SeriaWei/underscore,r14r-work/fork_javascript_lodash,jasnell/lodash,javiosyc/lodash,dimitriwalters/underscore,xiaoqiang730730/underscore,imsingh/underscore,chrootsu/lodash,hitesh97/lodash,PengShi-sp/underscore,cgvarela/underscore,liyandalmllml/underscore,Joanna913/underscore,elancom/underscore,lekoaf/lodash,mshoaibraja/lodash,wxmfront/underscore,yekg880809/underscore,janocat/underscore,yuhualingfeng/underscore,zestia/lodash,irr/underscore,Joanna913/underscore,1800joe/underscore,emiel187/underscore,dxuehu/underscore,Yangani/underscore,npmcomponent/jashkenas-underscore,krahman/lodash,janocat/underscore,xixilive/lodash,ajefremovs/lodash,AaronNGray/underscore-server,ereddate/underscore,krahman/lodash,zabefloyd/underscore,gutenye/lodash,mdboop/underscore,youprofit/lodash,lekoaf/lodash,vinodbonala/underscore,PengShi-sp/underscore,chrootsu/lodash,dgoncalves1/lodash,therebelbeta/lodash,mairasala/underscore,amdjs/underscore,dyx/underscore,Droogans/lodash,ryanwholey/underscore,neouser99/lodash,shwaydogg/lodash,cnwhy/underscore,ligson/underscore,npmcomponent/component-underscore,leolin1229/lodash,lzheng571/lodash,Jaspersoft/lodash,ricardohbin/lodash,Andrey-Pavlov/lodash,huyinghuan/lodash,therebelbeta/lodash,imjerrybao/lodash,amdjs/underscore,akre54/underscore,ricardohbin/lodash,falqas/underscore,Jaspersoft/lodash,benweet/lodash,studiowangfei/lodash,joshuaprior/lodash,kuychaco/underscore,af7/lodash,r14r-work/fork_javascript_lodash,rtorr/lodash,rwaldron/underscore,jdelbello/underscore,felixshu/lodash,roychen-7/underscore,nsamarcos/lodash,jiankers/underscore,dxuehu/underscore,zabefloyd/underscore,jshanson7/lodash,Jaspersoft/lodash,krahman/lodash,polarbird/lodash,mshoaibraja/lodash,singhsterabhi/underscore,ThiagoGarciaAlves/underscore,transGLUKator/lodash,mitar/underscore,julianocomg/lodash,vinodbonala/underscore,naoina/lodash,ktmud/lodash,starterstep/underscore,appleboy/underscore,rwaldron/underscore,r14r/fork_javascript_lodash,vincent1988/underscore,zhangguangyong/lodash,ktmud/lodash,huangnan1/2016gitStudy,steelsojka/lodash,msmorgan/lodash,platinumazure/underscore,Moykn/lodash,lucasfanning/underscore,jacwright/lodash,nbellowe/lodash,timruffles/lodash,bnicart/lodash,Tetpay/underscore,strongconjunctions/underscore,natac13/underscore,wxmfront/underscore,ajefremovs/lodash,jashkenas/underscore,jfarid27/underscore,hitesh97/lodash,JonAbrams/underscore,samuelbeek/lodash,studiowangfei/lodash,zhangguangyong/lodash,timruffles/lodash,kwangkim/underscore,enng0227/lodash,hafeez-syed/lodash,jzning-martian/lodash,ThiagoGarciaAlves/underscore,zestia/lodash,lqjack/underscore,stewx/lodash,cailong1028/underscore,dkusch/underscore,youprofit/lodash,MaxPRafferty/lodash,imsingh/underscore,greyhwndz/lodash,jianganglu/underscore,transGLUKator/lodash,kanso/underscore,codydaig/lodash,gutenye/lodash,zhangguangyong/underscore,beenlee/underscore,xiwc/lodash,ricardohbin/lodash,lekkas/lodash,greyhwndz/lodash,tonyonodi/lodash,JonAbrams/underscore,Lottid/lodash,jacwright/lodash,ijidan/underscore,tnga/underscore-es,r14r-work/fork_javascript_lodash,ror/lodash,huyinghuan/lodash,SerenoShen/underscore,prawnsalad/lodash,wjb12/underscore,learning/underscore,Xotic750/lodash,colemakdvorak/underscore,starterstep/underscore,tgriesser/lodash,phillipalexander/lodash,lekkas/lodash,emiel187/underscore,oss6/underscore,schnerd/lodash,polarbird/lodash,timruffles/lodash,AneesMohammed/lodash,AaronNGray/underscore-server,jasnell/lodash,PUSEN/underscore,Forever8/underscore,ijidan/underscore,woldie/lodash,transGLUKator/lodash,imjerrybao/lodash,lekkas/lodash,BernhardRode/lodash,bkillenit/underscore,cnwhy/underscore,prosenjit-itobuz/underscore,developer-prosenjit/lodash,tonyonodi/lodash,schnerd/lodash,WangRex/underscore,keepgoingwm/underscore,elancom/underscore,jfarid27/underscore,codydaig/lodash,PUSEN/underscore,dfurtado/underscore,bailus/underscore,thiswildorchid/underscore,prosenjit-itobuz/underscore,enng0227/lodash,wjb12/underscore,tejokumar/lodash,addyosmani/underscore,andersonaguiar/lodash,prawnsalad/lodash,reggi/lodash,Aplopio/underscore,chrootsu/lodash,componentizr/underscore,sdwang/underscore,nickkneafsey/underscore,veg/underscore,javiosyc/lodash,eaglesjava/underscore,reggi/lodash,shwaydogg/lodash,mjhasbach/underscore,irr/underscore,leolin1229/lodash,colemakdvorak/underscore,premkumargithub/underscore,liminghui/underscore,aziz-boudi4/underscore,thiswildorchid/underscore,shwaydogg/lodash,tnga/underscore-es