Also, "getRequiredSampleSize" is called twice for each variant - in the "getResult"'s loop and then inside "hasEnoughData". Same thing for "getVariant". Would y

Also, "getRequiredSampleSize" is called twice for each variant - in the "getResult"'s loop and then inside "hasEnoughData". Same thing for "getVariant". Would you welcome a pull request? Your project is great, I'd totally use at work. Also, it was to learn the math behind that. Thanks!