Localize version 0.21.0

[0.21.0] — April 22nd, 2026

Bug Fixes

• Fix normalizing CLDR locale names to our standard atom format in Localize.validate_calendar/1.

• Localize.Calendar.iso_day_of_week/1 no longer crashes with MatchError on non-ISO calendars. The generic branch destructured calendar.day_of_week/4 as a 2-tuple but the Calendar behaviour returns {day, first, last}.

• Localize.Time.to_string/2 with a partial time and a standard format atom (:short/:medium/:long/:full) now derives a CLDR skeleton from the fields actually present (:h, :hm, :ms) instead of returning DateTimeUnresolvedFormatError.

• Localize.DateTime.to_string/2 no longer silently drops the hour when given a partial datetime such as %{year: _, month: _, day: _, hour: _} without :minute. Partial datetimes render via a split date + time path composed with the locale's datetime wrapper.

• Localize.DateTime.to_string/2 with hour + minute (no second) under :medium no longer emits a stray trailing : before the AM/PM marker — the partial path derives the :hm skeleton instead of using the full h:mm:ss a pattern with an empty seconds slot.

• The datetime formatter's AM/PM handler now accepts any map with :hour, not just maps that also have :minute.