5.3:
Iterating a Countries object now returns named tuples. This makes things nicer when using {% get_countries %} or using the country list elsewhere in your code.
5.2:
Ensure Django 2.1 compatibility for CountrySelectWidget.
Fix regression introduced into 5.1 when using Django 1.8 and certain queryset lookup types (like __in).
5.1.1:
Fix some translations that were included in 5.1 but not compiled.
5.1:
Tests now also cover Django Rest Framework 3.7 and Django 2.0.
Allow for creating country fields using (valid) alpha-3 or numeric codes.
Fix migration error with blank default.
Add a {% get_countries %} template tag.
Version 5.0:
No longer allow multiple=True and null=True together. This causes problems saving the field, and null shouldn’t really be used anyway because the country field is a subclass of CharField.
Add a CountryFieldMixin Django Rest Framework serializer mixin that automatically picks the right field type for a CountryField (both single and multi-choice).
Validation for Django Rest Framework field (thanks Simon Meers).
Allow case-insensitive .by_name() matching (thanks again, Simon).
Ensure a multiple-choice CountryField.max_length is enough to hold all countries.
Fix inefficient pickling of countries (thanks Craig de Stigter for the report and tests).
Stop adding a blank choice when dealing with a multi-choice CountryField.
Tests now cover multiple Django Rest Framework versions (back to 3.3).
Version 4.6.1
Fix invalid reStructuredText in CHANGES.
