Import diff from https://github.com/sisimai/p5-Sisimai/pull/229/files#diff-1e080490b315f3e66569e971875dce79 #78
Import diff from https://github.com/sisimai/p5-Sisimai/pull/229/files#diff-1e080490b315f3e66569e971875dce79 #78

azumakuniyuki/rb-Sisimai,azumakuniyuki/rb-Sisimai