todo.md

Cleanups and fixes TODO

1. DateWithCalendar should not have member 'date' -> 'inner_date'
2. Don't use a variable name 'date' either -> 'dt_date'
3. Implement all the comparison operators correctly for DateWithCalendar.
4. Make DateWithCalendar inherit from datetime.date so that operators don't have to be reimplemented. Not going to do this - datetime.date is an old-style object.

TODO before version 0.1

1. Catholic historical calendar.
2. Display strings for dates.
3. Years before 1.
4. Astronomical calendar (depends on 3.).
5. Make a calendar for ISO.
6. README.md
7. Julian Date numbers (calendar?)
8. Methods for direct conversion between Julian and Gregorian.

Fixes before version 0,1

1. '1th March 1500'

Changes before version 0.1

1. Create a property which returns a datetime.date if possible, rather than using x.date.
2. Check all imports to make sure that we are importing the local code correctly.
3. Change all imports of date/datetime so that we import them as 'vanilla_date' etc.

Tests before version 0.1

1. Every calendar should be able to generate a representation for all reasonable dates.
2. Every calendar should be able to generate a display string for all reasonable dates.
3. Tests on constants.py.

Cleanups before version 0.1

1. Move all constants into constants.py.
2. Remove JulianCalendar.julian_day_number() and replace functionality with JulianDayNumber calendar.
3. Move _is_julian_leap_year etc from several places into global helpers.
4. All calculations in internal. calendars, dates and fn call these helper functions.
5. Code in dates should not call any code in fn or calendars.

TODO after completing features for 0.1

1. Register with pypi and upload.
2. Complete documentation.

TODO harder

1. Deal with displaying calendar-specific strings in different locales.
2. Deal with displaying calendar-specific strings with some notion of formatting.
3. Make it work with Python 3.x.
4. Use a single polymorphic date object which every calendar can be based on. Calendar objects are maybe not so important anymore.