Set optional parameters
Set optional parameters

Based on the @param documentation, some parameters were set to be
optional.

abner/DefinitelyTyped,bennett000/DefinitelyTyped,rcchen/DefinitelyTyped,chbrown/DefinitelyTyped,rschmukler/DefinitelyTyped,ryan10132/DefinitelyTyped,dydek/DefinitelyTyped,syuilo/DefinitelyTyped,Zorgatone/DefinitelyTyped,OpenMaths/DefinitelyTyped,benishouga/DefinitelyTyped,olemp/DefinitelyTyped,donnut/DefinitelyTyped,flyfishMT/DefinitelyTyped,aciccarello/DefinitelyTyped,subash-a/DefinitelyTyped,micurs/DefinitelyTyped,wilfrem/DefinitelyTyped,slavomirvojacek/adbrain-typescript-definitions,trystanclarke/DefinitelyTyped,magny/DefinitelyTyped,gcastre/DefinitelyTyped,mareek/DefinitelyTyped,zuzusik/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,MugeSo/DefinitelyTyped,EnableSoftware/DefinitelyTyped,jimthedev/DefinitelyTyped,georgemarshall/DefinitelyTyped,jasonswearingen/DefinitelyTyped,pwelter34/DefinitelyTyped,fredgalvao/DefinitelyTyped,damianog/DefinitelyTyped,Litee/DefinitelyTyped,chrismbarr/DefinitelyTyped,greglo/DefinitelyTyped,paulmorphy/DefinitelyTyped,nycdotnet/DefinitelyTyped,martinduparc/DefinitelyTyped,alextkachman/DefinitelyTyped,behzad888/DefinitelyTyped,AgentME/DefinitelyTyped,Pro/DefinitelyTyped,Ptival/DefinitelyTyped,georgemarshall/DefinitelyTyped,ashwinr/DefinitelyTyped,slavomirvojacek/DefinitelyTyped,Dashlane/DefinitelyTyped,jimthedev/DefinitelyTyped,chrismbarr/DefinitelyTyped,Syati/DefinitelyTyped,raijinsetsu/DefinitelyTyped,sclausen/DefinitelyTyped,esperco/DefinitelyTyped,gandjustas/DefinitelyTyped,gcastre/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,arusakov/DefinitelyTyped,hellopao/DefinitelyTyped,olemp/DefinitelyTyped,donnut/DefinitelyTyped,frogcjn/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,arma-gast/DefinitelyTyped,florentpoujol/DefinitelyTyped,AgentME/DefinitelyTyped,teves-castro/DefinitelyTyped,alextkachman/DefinitelyTyped,mjjames/DefinitelyTyped,HPFOD/DefinitelyTyped,YousefED/DefinitelyTyped,MugeSo/DefinitelyTyped,CodeZombieCH/DefinitelyTyped,Zzzen/DefinitelyTyped,xStrom/DefinitelyTyped,chrootsu/DefinitelyTyped,mcliment/DefinitelyTyped,johan-gorter/DefinitelyTyped,arusakov/DefinitelyTyped,DzmitryDulko/DefinitelyTyped,mshmelev/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped,use-strict/DefinitelyTyped,egeland/DefinitelyTyped,vagarenko/DefinitelyTyped,abbasmhd/DefinitelyTyped,GlennQuirynen/DefinitelyTyped,Dominator008/DefinitelyTyped,psnider/DefinitelyTyped,reppners/DefinitelyTyped,applesaucers/lodash-invokeMap,jsaelhof/DefinitelyTyped,ashwinr/DefinitelyTyped,dmoonfire/DefinitelyTyped,raijinsetsu/DefinitelyTyped,teves-castro/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped,jraymakers/DefinitelyTyped,nakakura/DefinitelyTyped,abner/DefinitelyTyped,chrootsu/DefinitelyTyped,amanmahajan7/DefinitelyTyped,sergey-buturlakin/DefinitelyTyped,stacktracejs/DefinitelyTyped,danfma/DefinitelyTyped,stephenjelfs/DefinitelyTyped,benishouga/DefinitelyTyped,aciccarello/DefinitelyTyped,arcticwaters/DefinitelyTyped,alexdresko/DefinitelyTyped,Penryn/DefinitelyTyped,AyaMorisawa/DefinitelyTyped,jasonswearingen/DefinitelyTyped,scriby/DefinitelyTyped,nobuoka/DefinitelyTyped,wilfrem/DefinitelyTyped,TrabacchinLuigi/DefinitelyTyped,emanuelhp/DefinitelyTyped,use-strict/DefinitelyTyped,nmalaguti/DefinitelyTyped,drinchev/DefinitelyTyped,hatz48/DefinitelyTyped,axelcostaspena/DefinitelyTyped,UzEE/DefinitelyTyped,mhegazy/DefinitelyTyped,mshmelev/DefinitelyTyped,davidpricedev/DefinitelyTyped,mattanja/DefinitelyTyped,onecentlin/DefinitelyTyped,RX14/DefinitelyTyped,daptiv/DefinitelyTyped,borisyankov/DefinitelyTyped,schmuli/DefinitelyTyped,markogresak/DefinitelyTyped,benishouga/DefinitelyTyped,DzmitryDulko/DefinitelyTyped,arcticwaters/DefinitelyTyped,arma-gast/DefinitelyTyped,greglo/DefinitelyTyped,takenet/DefinitelyTyped,Dashlane/DefinitelyTyped,vagarenko/DefinitelyTyped,alvarorahul/DefinitelyTyped,mjjames/DefinitelyTyped,scriby/DefinitelyTyped,nitintutlani/DefinitelyTyped,stacktracejs/DefinitelyTyped,AbraaoAlves/DefinitelyTyped,arusakov/DefinitelyTyped,florentpoujol/DefinitelyTyped,Karabur/DefinitelyTyped,xStrom/DefinitelyTyped,nainslie/DefinitelyTyped,rcchen/DefinitelyTyped,amanmahajan7/DefinitelyTyped,johan-gorter/DefinitelyTyped,slavomirvojacek/DefinitelyTyped,martinduparc/DefinitelyTyped,hatz48/DefinitelyTyped,bridge-ufsc/DefinitelyTyped,TrabacchinLuigi/DefinitelyTyped,philippstucki/DefinitelyTyped,Ptival/DefinitelyTyped,amir-arad/DefinitelyTyped,mattanja/DefinitelyTyped,minodisk/DefinitelyTyped,aciccarello/DefinitelyTyped,stephenjelfs/DefinitelyTyped,martinduparc/DefinitelyTyped,jraymakers/DefinitelyTyped,Syati/DefinitelyTyped,nmalaguti/DefinitelyTyped,subash-a/DefinitelyTyped,isman-usoh/DefinitelyTyped,tan9/DefinitelyTyped,schmuli/DefinitelyTyped,AgentME/DefinitelyTyped,syuilo/DefinitelyTyped,abbasmhd/DefinitelyTyped,schmuli/DefinitelyTyped,CodeZombieCH/DefinitelyTyped,jimthedev/DefinitelyTyped,AyaMorisawa/DefinitelyTyped,GlennQuirynen/DefinitelyTyped,sledorze/DefinitelyTyped,OpenMaths/DefinitelyTyped,ajtowf/DefinitelyTyped,gyohk/DefinitelyTyped,optical/DefinitelyTyped,hellopao/DefinitelyTyped,nakakura/DefinitelyTyped,nycdotnet/DefinitelyTyped,mareek/DefinitelyTyped,elisee/DefinitelyTyped,Dominator008/DefinitelyTyped,nobuoka/DefinitelyTyped,jsaelhof/DefinitelyTyped,QuatroCode/DefinitelyTyped,pocesar/DefinitelyTyped,Softpagehomeware/DefinitelyTyped,trystanclarke/DefinitelyTyped,newclear/DefinitelyTyped,yuit/DefinitelyTyped,slavomirvojacek/adbrain-typescript-definitions,gyohk/DefinitelyTyped,UzEE/DefinitelyTyped,bdoss/DefinitelyTyped,mhegazy/DefinitelyTyped,drinchev/DefinitelyTyped,esperco/DefinitelyTyped,optical/DefinitelyTyped,frogcjn/DefinitelyTyped,progre/DefinitelyTyped,Karabur/DefinitelyTyped,shlomiassaf/DefinitelyTyped,nitintutlani/DefinitelyTyped,YousefED/DefinitelyTyped,pwelter34/DefinitelyTyped,behzad888/DefinitelyTyped,dsebastien/DefinitelyTyped,Softpagehomeware/DefinitelyTyped,onecentlin/DefinitelyTyped,danfma/DefinitelyTyped,sclausen/DefinitelyTyped,QuatroCode/DefinitelyTyped,bridge-ufsc/DefinitelyTyped,zuzusik/DefinitelyTyped,Penryn/DefinitelyTyped,glenndierckx/DefinitelyTyped,egeland/DefinitelyTyped,psnider/DefinitelyTyped,mattblang/DefinitelyTyped,one-pieces/DefinitelyTyped,mcrawshaw/DefinitelyTyped,pocesar/DefinitelyTyped,damianog/DefinitelyTyped,elisee/DefinitelyTyped,glenndierckx/DefinitelyTyped,Zorgatone/DefinitelyTyped,rolandzwaga/DefinitelyTyped,sergey-buturlakin/DefinitelyTyped,zuzusik/DefinitelyTyped,tan9/DefinitelyTyped,Pro/DefinitelyTyped,mcrawshaw/DefinitelyTyped,magny/DefinitelyTyped,benliddicott/DefinitelyTyped,newclear/DefinitelyTyped,applesaucers/lodash-invokeMap,ryan-codingintrigue/DefinitelyTyped,dydek/DefinitelyTyped,RX14/DefinitelyTyped,bdoss/DefinitelyTyped,rolandzwaga/DefinitelyTyped,reppners/DefinitelyTyped,hellopao/DefinitelyTyped,yuit/DefinitelyTyped,rschmukler/DefinitelyTyped,smrq/DefinitelyTyped,nainslie/DefinitelyTyped,nfriend/DefinitelyTyped,pocesar/DefinitelyTyped,psnider/DefinitelyTyped,minodisk/DefinitelyTyped,musicist288/DefinitelyTyped,dsebastien/DefinitelyTyped,alvarorahul/DefinitelyTyped,takenet/DefinitelyTyped,davidpricedev/DefinitelyTyped,georgemarshall/DefinitelyTyped,gandjustas/DefinitelyTyped,isman-usoh/DefinitelyTyped,smrq/DefinitelyTyped,mattblang/DefinitelyTyped,bennett000/DefinitelyTyped,dmoonfire/DefinitelyTyped,Zzzen/DefinitelyTyped,ajtowf/DefinitelyTyped,sledorze/DefinitelyTyped,paulmorphy/DefinitelyTyped,eugenpodaru/DefinitelyTyped,flyfishMT/DefinitelyTyped,EnableSoftware/DefinitelyTyped,Litee/DefinitelyTyped,philippstucki/DefinitelyTyped,HPFOD/DefinitelyTyped,fredgalvao/DefinitelyTyped,progre/DefinitelyTyped,shlomiassaf/DefinitelyTyped,alexdresko/DefinitelyTyped,emanuelhp/DefinitelyTyped,borisyankov/DefinitelyTyped,GiedriusGrabauskas/DefinitelyTyped