t() :: %ExWareki.Structs.Wareki{
  day: integer(),
  month: integer(),
  name: string(),
  year: integer(),
  yomi: string()
}

t(name, yomi, year, month, day) :: %ExWareki.Structs.Wareki{
  day: day,
  month: month,
  name: name,
  year: year,
  yomi: yomi
}