Module date

Items for representing days, years and dates.

Structs

• Date
  Represents the Year and Day a puzzle was released.
• Day
  Represents a day between 1 and 25 (inclusive).
• InvalidDayError
  Error type returned when trying to convert an invalid value to a Day.
• InvalidYearError
  Error type returned when trying to convert an invalid value to a Year.
• Year
  Represents a 4-digit year, 2015 or later.