Feincms3

~~~~~~~~~~~~~~~~~~~~

- Changed :func:`feincms3.applications.page_for_app_request` to only use
active pages by default. This change should mostly not change anything
since :func:`~feincms3.applications.apps_urlconf()` and therefore
:func:`~feincms3.applications.apps_middleware` only add active
applications anyway.
- Upgraded prettier and ESLint to recent versions.
- Added some code to embed videos from YouTube and Vimeo without
requiring oEmbed.
- Dropped compatibility with Python 3.5.

~~~~~~~~~~~~~~~~~~~~

- Switched from ``url()`` to ``re_path()`` in ``apps_urlconf()`` to
avoid deprecation warnings.
- Removed the limitation that apps could not have descendants in a page
tree. There may be valid use cases for this, especially if an apps'
URLconf module does not handle *all* paths.

~~~~~~~~~~~~~~~~~~~~

- **(not yet) BACKWARDS INCOMPATIBLE** Moved the ``feincms3.apps``
module to :mod:`feincms3.applications`. The reason for this change is
that Django 3.2 will start autodiscovering app configs and therefore
automatically loads the ``.apps`` submodule of all entries in
``INSTALLED_APPS``. This leads to a crash when the ``.apps`` module
contains models (such as our ``AppsMixin``). ``feincms3.apps`` isn't
populated from Django 3.2 upwards because of this.
- Fixed an infinite recursion crash when referencing pages using
``on_delete=SET_NULL``
- Added a ``LanguageAndTranslationOfMixin`` which not only allows
defining the language of objects but also defining objects to be
translations of other objects.
- Added a ``|translations`` filter to the template tag library. Added a
section about generating a language selector containing deep links to
the :ref:`multilingual sites guide <multilingual-sites>` guide.
- Added Travis CI jobs for Django 3.1b1 and Python 3.8.
- Renamed the main branch to ``main``.
- Removed all arguments to ``super()`` since we're Python 3-only.
- Dropped workarounds for the removal of ``django.utils.six`` and
``python_2_unicode_compatible`` from the testsuite. They were only
required for our dependencies, not for feincms3 itself.

~~~~~~~~~~~~~~~~~~~~

- Removed mentions of Python 2 compatibility in the docs.
- Allowed using ``render_list`` with lists, not only querysets.
- Dropped compatibility with Django<2.2 in accordance with the official
Django releases support policy.
- Replaced ``url()`` with ``re_path()`` which avoids a few deprecation
warnings.

~~~~~~~~~~~~~~~~~~~~

- Changed ``Regions``' ``cache_key`` argument handling to allow
disabling caching by returning a falsy value.
- Added the ``feincms3.renderer.render_in_context`` utility.
- Verified compatibility with Django 3.0.
- Made the ``TemplateMixin.template`` property fall back to the first
template in ``TEMPLATES`` if the specific template could not be found
or does not exist.
- Fixed another path uniqueness validation problem where pages having
descendants with static paths could not be saved.

~~~~~~~~~~~~~~~~~~~~

- Changed ``app_instance_namespace`` to ``blank=True`` to make it clear
what the default value is.
- Fixed a possible path uniqueness problem with descendants with static
paths.
- Dropped Python 3.4 compatibility.