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* Add ``BaseAssignmentOrOutputNode`` to support tags similar to ``{% trans .. as .. %}`` and ``{% url .. as .. %}``.
* **Backwards incompatible:**: The arguments of ``BaseAssignmentOrInclusionNode.get_value()`` also receive the ``context`` now.
So ``get_value(self, *tag_args, **tag_kwargs)`` becomes: ``get_value(self, context, *tag_args, **tag_kwargs)``.
If you use the positional arguments, update your method signature.