fix(typings): make cssnano option properties optional
fix(typings): make cssnano option properties optional

osulp/oe-ng2-seed,NathanWalker/angular-seed-advanced,hookom/climbontheway,millea1/tips1,jasonlevinsohn/jarvis-dashboard,zertyz/angular-seed-advanced-spikes,DallasAngularSuperHeroes/dash-ng2,NathanWalker/angular2-seed-advanced,zertyz/edificando-o-controle-interno,tobiaseisenschenk/data-cube,miltador/unichat,zertyz/observatorio-SUAS,idready/Bloody-Prophety-NG2,christophersanson/js-demo-fe,adobley/angular2-tdd-workshop,larsnolden/MLB,JohnnyQQQQ/angular-seed-material2,zertyz/angular2-seed-advanced-spikes2,mgechev/angular-seed,booleanVirus/POC,billsworld/angular2-seed,trutoo/startatalk-native,zertyz/observatorio-SUAS-formularios,tarlepp/angular2-seed,hoangnguyenba/chat-app,Nightapes/angular2-seed,nickaranz/robinhood-ui,Karasuni/angular-seed,jelgar1/fpl-api,sanastasiadis/angular-seed-openlayers,wenzelj/nativescript-angular,idrabenia/angular2-crud,davewragg/agot-spa,ilvestoomas/angular-seed-advanced,talentspear/a2-redux,OlivierVoyer/angular-seed-advanced,felipecamargo/ACSC-SBPL-M,AWNICS/mesomeds-ng2,rawnics/mesomeds-ng2,Jimmysh/angular2-seed-advanced,sanastasiadis/angular-seed-openlayers,GeoscienceAustralia/gnss-site-manager,trevordaniels/ang2seed-advanced,AWNICS/mesomeds-ng2,Shyiy/angular-seed,guilhebl/offer-web,trevordaniels/ang2seed-advanced,chnoumis/angular2-seed-advanced,vip32/eventfeedback,ManasviA/Dashboard,tiagomapmarques/angular-examples_books,ysyun/angular-seed-stub-api-environment,idready/Philosophers,Karasuni/angular-seed,chnoumis/angular2-seed-advanced,mgechev/angular2-seed,mgechev/angular-seed,miltador/unichat,oblong-antelope/oblong-web,idrabenia/angular2-crud,Shyiy/angular-seed,rtang03/fabric-seed,arun-awnics/mesomeds-ng2,m-abs/angular2-seed-advanced,pratheekhegde/a2-redux,billsworld/angular2-seed,TOKOFE/team-todo,ppanthony/angular-seed-tutorial,Karasuni/angular-seed,NathanWalker/angular-seed-advanced,pskaarup/marge,arun-awnics/mesomeds-ng2,booleanVirus/POC,jasonlevinsohn/jarvis-dashboard,alantreadway/homedash,ManasviA/Dashboard,zertyz/angular-seed-advanced-spikes,rtang03/fabric-seed,lfarran/angular2-seed-advanced,BlackMr/angular2seed2new,jigarpt/angular-seed-semi,natarajanmca11/angular2-seed,ghsyeung/ng2-component-intro,tobiaseisenschenk/data-cube,tctc91/angular2-wordpress-portfolio,tiagomapmarques/angular-examples_books,nickaranz/robinhood-ui,pskaarup/marge,tiagomapmarques/angular-examples_books,nlopezcenteno/angular2-seed,Bigous/angular2-seed-ng2-highcharts,origamyllc/Mangular,mraible/angular2-tutorial,pocmanu/angular2-seed-advanced,ysyun/angular-seed-stub-api-environment,oblong-antelope/oblong-web,prabhatsharma/bwa2,zertyz/observatorio-SUAS,davidstellini/bvl-pay,mgechev/angular2-seed,ysyun/angular-seed-stub-api-environment,radiorabe/raar-ui,davidstellini/bvl-pay,lhoezee/faithreg1,pieczkus/whyblogfront,hookom/climbontheway,billsworld/angular2-seed,jelgar1/fpl-api,mraible/angular2-tutorial,radiorabe/raar-ui,dmitriyse/angular2-seed,maniche04/ngIntranet,hookom/climbontheway,Bigous/angular2-seed-ng2-highcharts,jelgar1/fpl-api,guilhebl/offer-web,radiorabe/raar-ui,christophersanson/js-demo-fe,maniche04/ngIntranet,natarajanmca11/angular2-seed,CNSKnight/ng2-CNSKalc,adobley/angular2-tdd-workshop,lhoezee/faithreg1,shaggyshelar/Linkup,Sn3b/angular-seed-advanced,ghsyeung/ng2-component-intro,pieczkus/whyblogfront,pskaarup/marge,Spencer-Lewis/BandBoard2,trutoo/startatalk-native,watonyweng/angular-seed,fart-one/monitor-ngx,fart-one/monitor-ngx,osulp/oe-ng2-seed,nie-ine/raeber-website,MgCoders/angular-seed,fr-esco/angular-seed,tctc91/angular2-wordpress-portfolio,hookom/climbontheway,idrabenia/angular2-crud,llwt/angular-seed-advanced,AngularShowcase/angular2-seed-ng2-highcharts,millea1/tips1,maniche04/ngIntranet,lfarran/angular2-seed-advanced,Jimmysh/angular2-seed-advanced,JohnnyQQQQ/md-dashboard,rawnics/mesomeds-ng2,davewragg/agot-spa,OlivierVoyer/angular-seed-advanced,Nightapes/angular2-seed,TOKOFE/team-todo,CNSKnight/angular2-seed-advanced,abhibly/Angular2-Seed-Project,BlackMr/angular2seed2new,prabhatsharma/bwa2,larsnolden/MLB,vyakymenko/angular-seed-express,Sn3b/angular-seed-advanced,tarlepp/angular2-seed,wenzelj/nativescript-angular,watonyweng/angular-seed,NathanWalker/angular-seed-advanced,Sn3b/angular-seed-advanced,ilvestoomas/angular-seed-advanced,chnoumis/angular2-seed-advanced,felipecamargo/ACSC-SBPL-M,nickaranz/robinhood-ui,rawnics/mesomeds-ng2,ronikurnia1/ClientApp,abhibly/Angular2-Seed-Project,felipecamargo/ACSC-SBPL-M,zertyz/observatorio-SUAS-formularios,JohnnyQQQQ/md-dashboard,AWNICS/mesomeds-ng2,ilvestoomas/angular-seed-advanced,idready/Bloody-Prophety-NG2,hoangnguyenba/chat-app,origamyllc/Mangular,m-abs/angular2-seed-advanced,mraible/angular2-tutorial,zertyz/angular2-seed-advanced-spikes2,ronikurnia1/ClientApp,MgCoders/angular-seed,nie-ine/raeber-website,trevordaniels/ang2seed-advanced,hoangnguyenba/chatapp,llwt/angular-seed-advanced,sanastasiadis/angular-seed-openlayers,origamyllc/Mangular,vyakymenko/angular-seed-express,larsnolden/MLB,smartnosemm/angular2-seed-express,natarajanmca11/angular2-seed,adobley/angular2-tdd-workshop,nie-ine/raeber-website,miltador/unichat,alantreadway/homedash,christophersanson/js-demo-fe,JohnnyQQQQ/md-dashboard,idready/Bloody-Prophety-NG2,zertyz/edificando-o-controle-interno,suigezi/angular2-seed,AnnaCasper/finance-tool,mgechev/angular-seed,tctc91/angular2-wordpress-portfolio,ManasviA/Dashboard,lhoezee/faithreg1,smartnosemm/angular2-seed-express,fr-esco/angular-seed,dmitriyse/angular2-seed,dmitriyse/angular2-seed,Nightapes/angular2-seed,ghsyeung/ng2-component-intro,zertyz/observatorio-SUAS,smartnosemm/angular2-seed-express,NathanWalker/angular2-seed-advanced,deanQj/angular2-seed-bric,zertyz/observatorio-SUAS,nlopezcenteno/angular2-seed,Jimmysh/angular2-seed-advanced,booleanVirus/POC,lfarran/angular2-seed-advanced,tobiaseisenschenk/data-cube,m-abs/angular2-seed-advanced,nie-ine/raeber-website,Bigous/angular2-seed-ng2-highcharts,guilhebl/offer-web,mgechev/angular2-seed,liuy97/angular2-material-seed,abhibly/Angular2-Seed-Project,vyakymenko/angular-seed-express,GeoscienceAustralia/gnss-site-manager,radiorabe/raar-ui,vip32/eventfeedback,deanQj/angular2-seed-bric,adobley/angular2-tdd-workshop,idready/Philosophers,deanQj/angular2-seed-bric,prabhatsharma/bwa2,AnnaCasper/finance-tool,osulp/oe-ng2-seed,davewragg/agot-spa,oblong-antelope/oblong-web,AngularShowcase/angular2-seed-ng2-highcharts,alexmanning23/uafl-web,vip32/eventfeedback,OlivierVoyer/angular-seed-advanced,alexmanning23/uafl-web,ppanthony/angular-seed-tutorial,ManasviA/Dashboard,jigarpt/angular-seed-semi,shaggyshelar/Linkup,wenzelj/nativescript-angular,zertyz/angular2-seed-advanced-spikes2,hoangnguyenba/chatapp,ronikurnia1/ClientApp,liuy97/angular2-material-seed,AnnaCasper/finance-tool,fart-one/monitor-ngx,nlopezcenteno/angular2-seed,millea1/tips1,dmitriyse/angular2-seed,Spencer-Lewis/BandBoard2,jasonlevinsohn/jarvis-dashboard,talentspear/a2-redux,rtang03/fabric-seed,fr-esco/angular-seed,NathanWalker/angular2-seed-advanced,sylviefiat/bdmer3,OlivierVoyer/angular-seed-advanced,pieczkus/whyblogfront,sylviefiat/bdmer3,pratheekhegde/a2-redux,hoangnguyenba/chat-app,pocmanu/angular2-seed-advanced,MgCoders/angular-seed,pratheekhegde/a2-redux,AngularShowcase/angular2-seed-ng2-highcharts,zertyz/observatorio-SUAS-formularios,zertyz/edificando-o-controle-interno,suigezi/angular2-seed,GeoscienceAustralia/gnss-site-manager,llwt/angular-seed-advanced,CNSKnight/ng2-CNSKalc,CNSKnight/ng2-CNSKalc,JohnnyQQQQ/angular-seed-material2,TOKOFE/team-todo,CNSKnight/angular2-seed-advanced,shaggyshelar/Linkup,zertyz/angular-seed-advanced-spikes,arun-awnics/mesomeds-ng2,trutoo/startatalk-native,sylviefiat/bdmer3,ysyun/angular-seed-stub-api-environment,pocmanu/angular2-seed-advanced,Spencer-Lewis/BandBoard2,alantreadway/homedash,rtang03/fabric-seed,davidstellini/bvl-pay,talentspear/a2-redux,DallasAngularSuperHeroes/dash-ng2,idready/Philosophers,Shyiy/angular-seed,hoangnguyenba/chatapp,ppanthony/angular-seed-tutorial,MgCoders/angular-seed,JohnnyQQQQ/angular-seed-material2,tarlepp/angular2-seed,alexmanning23/uafl-web,BlackMr/angular2seed2new,liuy97/angular2-material-seed,jigarpt/angular-seed-semi,suigezi/angular2-seed,rtang03/fabric-seed,DallasAngularSuperHeroes/dash-ng2,vip32/eventfeedback,CNSKnight/angular2-seed-advanced