Issue #1397126, Add Date API section to administration menu and consolidate Date Popup and Date Tools settings there.

Tweak the all day formula to check for 59:59 even for items that use increments, to help fix problems when the calendar creates all day values.

Fix Date text placeholder to display a formatted date instead of a format. Follow up to Date repeat UI changes.

Issue #874322, The All Day functionality has been moved into a separate module and hooks were added to make it easier for other modules to inject steps into date processing.

Issue #1267046, The UNTIL date was not getting included in repeating results. This should now be fixed, but is an API change of sorts for anyone who worked around it by setting it ahead.

Issue #1266536, Keep timezone adjustments from altering the values for repeating date EXCEPTIONS and ADDITIONS.

Issue #1353790, Hide missing index notice if the value in the Date Popup does not match the expected value, it will still get trapped as a validation error.

Remove date_get_nested_elements() function. Not being used and I don't want other code to start expecting it.

Issue #1292898, Check for all day checkbox in the basic date element validation so empty time for newly added elements still passes validation.