PostgresAddRangePartition does not implement database_backwards

[warmwaffles]

I don't think the postgres add range partition functionality contains the ability to rollback

  File "manage.py", line 29, in <module>
    execute_from_command_line(sys.argv)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/usr/local/lib/python3.7/site-packages/django/core/management/__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 323, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 364, in execute
    output = self.handle(*args, **options)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/base.py", line 83, in wrapped
    res = handle_func(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/core/management/commands/migrate.py", line 234, in handle
    fake_initial=fake_initial,
  File "/usr/local/lib/python3.7/site-packages/django/db/migrations/executor.py", line 121, in migrate
    state = self._migrate_all_backwards(plan, full_plan, fake=fake)
  File "/usr/local/lib/python3.7/site-packages/django/db/migrations/executor.py", line 196, in _migrate_all_backwards
    self.unapply_migration(states[migration], migration, fake=fake)
  File "/usr/local/lib/python3.7/site-packages/django/db/migrations/executor.py", line 269, in unapply_migration
    state = migration.unapply(state, schema_editor)
  File "/usr/local/lib/python3.7/site-packages/django/db/migrations/migration.py", line 175, in unapply
    operation.database_backwards(self.app_label, schema_editor, from_state, to_state)
  File "/usr/local/lib/python3.7/site-packages/django/db/migrations/operations/base.py", line 75, in database_backwards
    raise NotImplementedError('subclasses of Operation must provide a database_backwards() method')
NotImplementedError: subclasses of Operation must provide a database_backwards() method

[Photonios]

I've fixed this in v2.0.2: https://github.com/SectorLabs/django-postgres-extra/releases/tag/v2.0.2