Django-plans-payments

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* Drop support for Python 3.7
* Add support for Python 3.13, Django 5.1
* fix the wrong assumption that ``Payment.extra_data["response"]`` contains a ``"transactions"`` key

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* do not check whether a confirmed payment of a completed order is left anymore

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* migrate to ``RecurringUserPlan.renewal_triggered_by``
* add ``renewal_triggered_by`` parameter to ``Payment.set_renew_token``
* deprecate ``automatic_renewal`` parameter of ``Payment.set_renew_token``; use ``renewal_triggered_by`` parameter instead
* deprecate ``None`` value of ``renewal_triggered_by`` parameter of ``Payment.set_renew_token``; set an ``AbstractRecurringUserPlan.RENEWAL_TRIGGERED_BY`` instead

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* fix typo in payment description

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* add optional returning orders when payments are refunded

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* add change_reason for django-simple-history