Import commit https://github.com/sisimai/set-of-emails/commit/72a99ec04969507dbef5e71d37f2051daebc43a6
Import commit https://github.com/sisimai/set-of-emails/commit/72a99ec04969507dbef5e71d37f2051daebc43a6

azumakuniyuki/rb-Sisimai,azumakuniyuki/rb-Sisimai