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- Drop support for Python < 3.7 / Django < 3.2
- Remove jsonfield dependency in favor of django.db.models.JSONField
WARNING : This can break your migration. jsonfield used to create a text column for your json data when running 'makemigrations'. However, django.db.models.JSONField creates a json column using database-backend specific column types (ie jsonb on postgresql). As such your model field that used to be a text column is now a jsonb column.