I also merged flebel's changes.
You will have to drop all your django-cities tables and re-sync.
Specified the type of local code expected by CITIES_LOCALES.
Specified the type of country code expected by CITIES_POSTAL_CODES.
Modified the default CITIES_POSTAL_CODES list to follow the style con…
Merge branch 'flebel/master'
Merge branch 'master' of git://github.com/coderholic/django-cities
Added Subregion class and replaced region_# naming scheme.
Moved common code from Region/City/District into base classes.