added tests for isArguments
added tests for isArguments

yetone/refluxjs,H3Chief/reflux-core,juliankrispel/refluxjs,reflux/reflux-core,uniphil/refluxjs,simonvizzini/refluxjs,reflux/refluxjs,robert-chiniquy/refluxjs,vebin/refluxjs,StephenGrider/refluxjs,VasylHryha/refluxjs,insionng/refluxjs,misnet/refluxjs,goatslacker/refluxjs,taskworld/refluxjs,bsingr/refluxjs,lishengzxc/refluxjs,mjhlybmwq/refluxjs,ericf89/reflux-core,watonyweng/refluxjs,GerHobbelt/refluxjs,VanTanev/refluxjs,sahat/refluxjs,Sipree/reflux-core,williamle8300/refluxjs,Sipree/refluxjs,Mayho/refluxjs,spoike/refluxjs