Add an example showing how to update a stratified design at the time analysis#608

LittleBeannie merged 5 commits intomainMerck/gsDesign2:mainfrom

606-blinded-estimation-of-the-treatment-effect-under-stratified-designMerck/gsDesign2:606-blinded-estimation-of-the-treatment-effect-under-stratified-designCopy head branch name to clipboard