Get date popup working in node author section and fix validation and form_set_value code to work right in Drupal 6.

Simplify the API by assuming all date element values are handled in DATETIME format. The CCK Date module handles conversion of ISO and UNIX values to and from DATETIME values. This simplification of the core API should make it easier to get into core and makes the element handling easier to follow, plus I assume the first thing we'll do when a date API is in core is convert core timestamp fields to true DATETIME fields, so this would be the natural default.

Rework the method of storing exception dates in Date Repeat. Instead of previous method of a single date box and a formated table of exception dates with checkboxes to remove them, switch the the CCK style of adding as many blank boxes as needed for exceptions and removing them by wiping out the values. This can easily pick up the AHAH add more button in D6 for a nicer UI.

Also fix the handling of exception dates to make sure those dates actually do get omitted, and this now seems to be working.

More work on repeating date computations and their tests. Adding repeating dates to CCK date fields now seems to be working, at least for the tested scenarios.

More rework of the date repeat rrule calculations; move lots of the code into .inc files since these are used often so no reason to parse all that code on every page.

Require the UNTIL date for now to simplify getting this working. Add in error checking to be sure that value is set and add some documentation to the date_reapeat.inc file about how this is implemented in the Date module.

A very very very very rough implementation of a repeating date in the CCK date module using Date Repeat. Still needs lots more work.

More work on Date Repeat calculation logic. We have to create a new date object each time we try to use date_repeat_set_month_day in PHP5.2 or old values sometimes bleed into subsequent calculations.

Standardize on date_make_date() instead of calling date_create() in some places so there is a central place to test the timezone and date values before creating the date.

Add method to customize the labeling of date parts to allow the label above the date part, inserted as the first item in the options array, or omitted.

Remove some functions that are not being used or move them so they are called only when needed to clean up the code.

Add conversion functions for iCal date, more cleanup of date_repeat and add a warning in the date_repeat info file that it is not ready to use yet.

Get rid ofdate_api_load() and just include file normally. Not using it enough to carve it out as a function.

Rework code so you can leave To date parts blank and have those parts automatically default to From date value. Change key for repeating multiple dates from 2 to 99 so we can add an option to set multiples to exactly 2 values as we will do in D6.

More work on getting repeating date selection forms working. Not yet handling the date repeat info, just focusing on making it possible to input and store repeat rules.

The Date Repeat API is mostly complete and can parse an iCal RRULE and return an array of dates that match the rule. Also added extensive simpletests on a variety of iCal RRULEs to test the logic. Not all iCal elements are included in this version, but the most common ones are. The API is not yet tied back into the Date module, so you can't do anything with it yet.

Get the date repeat form working correctly and simplfy the repeat options to eliminate x day of year and x day of month to make the form less complex and easier for the user. Just getting the forms to display properly at this point. They don't yet function correctly.

Consolidate date elements into a single '#date_settings' array to not pollute the form. Add in a widget settings option to show the date repeat form on the node. The repeat form doesn't actually do anything yet!

Reduce confustion by standardizing on use of 'month' instead of 'M' or 'mon', 'day' instead of 'D' or 'mday', etc, in granularity and date arrays.

Clean up date_popup and date_repeat. Date_popup is now functional, date_repeat is not yet. Add changes to date.install to match what was committed to the D5 branch.