* Breaking change: Providing both `default` and `randomize` is not alowed.
* Breaking change: Illegal values now throw `django.db.utils.ProgrammingError`
* The `randomize` feature now uses the `secrets` module.
* Fields now expose `.re` and `.validate_string(strval)` to assist with validation.
* Symbols are now exported from the top-level `django_spicy_id` module.