Django-model-utils

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- Add support for `Django 3.2`
- Drop support for `Django 3.0`
- Add support for `Python 3.10`
- Added urlsafe token field.
- Introduce context manager for FieldTracker state reset (GH-491)
- Fix performance regression of FieldTracker on FileField subclasses on Django 3.1+
(GH-498)

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- Applied `isort` to codebase (Refs GH-402)
- Fix `TypeError` in save when model inherits from both TimeStampModel
and StatusModel. (Fixes GH-465)

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**Breaking changes:**

- `FieldTracker` now marks fields as not changed after `refresh_from_db`
respecting `fields` argument (GH-404)
- `FieldTracker` now respects `update_fields` changed in overridden `save()`
method (GH-404)
- `FieldTracker` now resets states after `pre_save()` and not anymore `save()`
signals, possibly altering the behaviour of overridden `save()`
methods (GH-404)

**Other changes:**

- Update InheritanceQuerySetMixin to avoid querying too much tables
- TimeStampedModel now automatically adds 'modified' field as an update_fields
parameter even if it is forgotten while using save()
- Replace ugettext_lazy with gettext_lazy to satisfy Django deprecation warning
- Add available_objects manager to SoftDeletableModel and add deprecation
warning to objects manager.
- StatusModel now automatically adds 'status_changed' field during save as an
update_fieldsparameter when 'status' is present in it to make sure it is not
forgotten.
- Update test requirements
- Move tests to GitHub Actions: https://github.com/jazzband/django-model-utils/actions
- Drop support for `Django 2.1`
- Add support for `Python 3.9`
- Add support for `Django 3.1`

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- Added `Choices.subset`.
- Remove hacks for previously supported Django versions. (Fixes GH-390)
- Dropped support for Python 2.7. (Fixes GH-393)
- Dropped usage of `six`
- Drop support for `Django 1.11`
- Add support for `Python 3.8`
- Add support for `Django 3.0`

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- Catch `AttributeError` for deferred abstract fields, fixes GH-331.
- Update documentation to explain usage of `timeframed` model manager, fixes GH-118
- Honor `OneToOneField.parent_link=False`.
- Fix handling of deferred attributes on Django 1.10+, fixes GH-278
- Fix `FieldTracker.has_changed()` and `FieldTracker.previous()` to return
correct responses for deferred fields.
- Add Simplified Chinese translations.
- Update AutoLastModifiedField so that at instance creation it will
always be set equal to created to make querying easier. Fixes GH-254
- Support `reversed` for all kinds of `Choices` objects, fixes GH-309
- Fix Model instance non picklable GH-330
- Fix patched `save` in FieldTracker
- Upgrades test requirements (pytest, pytest-django, pytest-cov) and
skips tox test with Python 3.5 and Django (trunk)
- Add UUIDModel and UUIDField support.

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- Update InheritanceIterable to inherit from
ModelIterable instead of BaseIterable, fixes GH-277.

- Add all_objects Manager for 'SoftDeletableModel' to include soft
deleted objects on queries as per issue GH-255