Add stack.yaml using LTS 2.11
Add stack.yaml using LTS 2.11

tolysz/keter,mwotton/keter,snoyberg/keter,bermanjosh/keter,tolysz/keter,creichert/keter,mwotton/keter,ajnsit/keter,telser/keter,andrewthad/keter,creichert/keter,ajnsit/keter,bermanjosh/keter,telser/keter,andrewthad/keter,snoyberg/keter