Update memoizable to version 0.4.1
Update memoizable to version 0.4.1

BryanH/follow-all,BryanH/follow-all,jasnow/follow-all,codeforamerica/follow-all,codeforamerica/follow-all,BryanH/follow-all,jasnow/follow-all,codeforamerica/follow-all,jasnow/follow-all