.gitconfig: Enable `core.untrackedCache`
.gitconfig: Enable `core.untrackedCache`

This speeds up commands involving untracked files such as `git status`.

Ref. https://git-scm.com/docs/git-update-index#_untracked_cache.

jklmnop/dotfiles,BradMcGonigle/dotfiles,vitorhsb/dotfiles,trymbill/dotfiles,hadees/dotfiles,malash/dotfiles,anonymint/dotfiles,vesparny/dotfiles,mdjnewman/dotfiles,miku/dotfiles,fredriksundstrom/dotfiles,dgrebb/dotfiles,triq6/dotfiles,dodeja/dotfiles,evansenter/dotfiles,kunsang/dotfiles,Jeddf/dotfiles,cappadona/dotfiles,bplommer/dotfiles,bwaibel/dotfiles,BigGillyStyle/dotfiles-lw,BradMcGonigle/dotfiles,jeffbyrnes/dotfiles,vesparny/dotfiles,theand/mathiasdotfiles,asbjornu/dotfiles,coinsk/dotfiles,lucafavatella/mathiasbynens-dotfiles,PStrakendal/dotfiles,ly-nx/dotfiles,alexdiliberto/dotfiles,reuski/dotfiles,tallboy/dotfiles,nub4life/dotfiles,theneonlobster/dotfiles,mosleywm/dotfiles,felics/dotfiles,kunsang/dotfiles,rylectro/dotfiles,evansenter/dotfiles,vocino/dotfiles,lipis/dotfiles,LambertoD/dotfiles,ncoelle/dotfiles_mathiasbynens,tallboy/dotfiles,AlexanderNZ/dotfiles,miku/dotfiles,ssanchez/dotfiles,jleajones/dotfiles,thrasher/dotfiles,LambertoD/dotfiles,margaritis/dotfiles,michaelsharpe/dotfiles,dmnsgn/dotfiles,ianvanness/dotfiles,satie/dotfiles,kevinhwang/dotfiles,JustinTullgren/dotfiles,jawee/dotfiles,KoltonA/dotfiles,micck/dotfiles,quimrstorres/dotfiles,nodemaker/dotfiles,chriswoodley/dotfiles,bwaibel/dotfiles,mathiasbynens/dotfiles,quimrstorres/dotfiles,miguelff/dotfiles,ncoelle/dotfiles_mathiasbynens,thinktwo/dotfiles,aceoliver/dotfiles,laserson/dotfiles,FradSer/dotfiles,drewhunter/dotfiles,vanev/dotfiles,mike1e/dotfiles,SamirBoulil/dotfiles,twinch/dotfiles,mnkhouri/mathiasbynens,beausmith/dotfiles,miguelff/dotfiles,johndryan/dotfiles,timshadel/dotfiles,hadees/dotfiles,reuski/dotfiles,BigGillyStyle/dotfiles-lw,kevinhwang/dotfiles,rylectro/dotfiles,chao-xian/dotfiles,rtfpessoa/dotfiles,margaritis/dotfiles,mlefoster/dotfiles,MrMaksimize/dotfiles,miku/dotfiles,carlosliu/dotfiles,vesparny/dotfiles,ssanchez/dotfiles,timmywil/dotfiles,smuldr/dotfiles,Jeddf/dotfiles,jooray/dotfiles,brwnj/dotfiles,tallboy/dotfiles,xcompass/dotfiles,yangsu/dotfiles,carlosliu/dotfiles,kevinhwang/dotfiles,triq6/dotfiles,MikeGoldsmith/dotfiles,svassr/dotfiles,tornqvist/dotfiles,enavarrocu/dotfiles,timyardley/dotfiles,mohuk/dotfiles,rowleyaj/dotfiles,zarth/dotfiles,boennemann/dotfiles,DylanVann/dotfiles,topless/dotfiles,jooray/dotfiles,imattman/dotfiles-mathiasbynens,Julyyq/dotfiles,tornqvist/dotfiles,michaelsharpe/dotfiles,joshes/dotfiles,brwnj/dotfiles,dodeja/dotfiles,CsupiUK/dotfiles,nowucca/dotfiles,ironprogrammer/dotfiles,theand/mathiasdotfiles,dodeja/dotfiles,anonymint/dotfiles,alexdiliberto/dotfiles,hadibadjian/dotfiles,jeffbyrnes/dotfiles,alexdiliberto/dotfiles,johnbuffington/dotfiles,mikaelengstrom/dotfiles,fabian/dotfiles,eupestov/dotfiles,EvanWillms/dotfiles,jannyg/dotfiles,Quantisan/dotfiles,cappadona/dotfiles,shabith/dotfiles,acourtneybrown/dotfiles,smnorris/dotfiles,jeffbyrnes/dotfiles,micck/perv-dotfiles,ryancat/dotfiles,vitorhsb/dotfiles,imattman/dotfiles-mathiasbynens,deffjay/dotfiles,shabith/dotfiles,mrjefftang/dotfiles,thinktwo/dotfiles,loujiayu/dotfiles,ajordens/dotfiles,satie/dotfiles,JeroenVdb/dotfiles,dodeja/dotfiles,timshadel/dotfiles,tomfuertes/dotfiles,mklaber/dotfiles,AlexanderNZ/dotfiles,serv/dotfiles-1,tallboy/dotfiles,trymbill/dotfiles,auzwang/dotfiles,Igor1201/dotfiles,anup-ap/dotfiles,mdjnewman/dotfiles,vocino/dotfiles,deffjay/dotfiles,tonioriol/dotfiles