Calendar is a comprehensive library for creating calendar views, including yearly, monthly, weekly overviews, and agendas.Features:- Generate full year, month and week calendars through simple functions.- Supports variable start of the week (any weekday can be the first day of the week).- Supports week numbers in two versions - "First four day week" (where Week 1 is the first week with four days in it) and "Traditional" (where Week 1 is the week containing January 1).- Localization for day names and month names in three versions, Full (e.g. "Monday"), Abbreviation (e.g. "Mon") and Short (e.g. "M"), plus standard date format for each locale.- Customizable date format through POSIX-style placeholders (e.g. "%A, %-d %B" become "Wednesday, 21 October"). Supports any divider characters.- A Date class with functions for manipulating and comparing dates.