Django-parler

---------------------------

* Added Django 4.0 support.
* Added M2M field support.
* Added PARLER_CACHE_PREFIX for sites that share the same cache.

-----------------------------

* Added support for Django 3.2.
* Added support for python 3.9.
* Dropped support for Python 3.5.
* Fixed deprecation warning for ``providing_args`` in Django Signals.

-----------------------------

* Added support for Django 3.1.
* Drop support for Python 2.7.
* Drop support for Django 1.11, 2.0, 2.1.

-----------------------------
* Allows to override the `label`, `error_message` and `help_text` in `TranslatableModelForm`-s.
* Fixed Django 3.1 compatibility by adopting import path for form utilities.

-----------------------------

* Fixed Django 3.0 compatibility by removing django.utils.six dependency.
* Fixed using ``value_from_object()`` instead of ``get_prep_value()`` in model forms initial data.
* Fixed using proper ``get_language()`` call when ``PARLER_DEFAULT_ACTIVATE`` is used.
* Fixed confusing ``AttributeError`` on ``_parler_meta`` when migrations don't inherit from ``TranslatableModel``.

---------------------------

* Added Django 2.1 and 2.2 support
* Added translation support to data migrations.
* Fixed formatting of initial form values for translated fields.
* Fixed admin change view redirects to preserve ``?language=..`` in the query string.
* Fixed admin loading ``prepopulate.js`` for DEBUG=True.
* Fixed admin quoting for ``object_id`` URLs.
* Fixed ``UUIDField`` support.
* Fixed object creation when setting the ``pk`` field on newly added objects.
* Fixed check on ``MISSING`` sentinel when loading cached models.
* Fixed ``QuerySet._clone()`` argument signature.
* Fixed ``model.delete()`` call to return collector data.
* Fixed ``model.refresh_from_db()`` to clear the translations cache too.
* Fixed returning full full ``ValidationError`` data from ``validate_unique()``.
* Drop Django 1.7, 1.8, 1.9, 1.10 compatibility.