message: fixed: Display japanese when default.
diff: @@ -6,10 +6,10 @@ dmc-datepicker.Datepicker
  .Datapicker__head
  span.Datapicker__transition(onclick="{ handlePrevButtonPat }") <
  span.Datapicker__month { displayDate.year() }
  - b { settingDateName.month[opts.language][displayDate.month()] }
  + b { settingDateName.month[opts.language || 'ja'][displayDate.month()] }
  span.Datapicker__transition(onclick="{ handleNextButtonPat }") >
  .Datapicker__days
  - span(each="{ day, index in settingDateName.days[opts.language] }" class="{ (index == 0) ? 'Datapicker__days--sunday' : '' } { (index == 6) ? 'Datapicker__days--saturday' : '' }") { day }
  + span(each="{ day, index in settingDateName.days[opts.language || 'ja'] }" class="{ (index == 0) ? 'Datapicker__days--sunday' : '' } { (index == 6) ? 'Datapicker__days--saturday' : '' }") { day }
  .Datapicker__container
  virtual(each="{ cell in generateCalendar() }")
  dmc-datepicker-cell(date="{ cell }" onCellPat="{ handleCellPat }")
  