Django-money

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**Changed**

- Re-raise arbitrary exceptions in JSON deserializer as `DeserializationError`. (:github-user:`Stranger6667`)

**Fixed**

- Invalid Django 1.8 version check in ``djmoney.models.fields.MoneyField.value_to_string``. (:github-user:`Stranger6667`)
- InvalidOperation in ``djmoney.contrib.django_rest_framework.fields.MoneyField.get_value`` when amount is None and currency is not None. :github-issue:`458` (:github-user:`carvincarl`)

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**Fixed**

- ``djmoney.forms.widgets.MoneyWidget`` decompression on Django 2.1+. :github-issue:`443` (:github-user:`Stranger6667`)

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**Fixed**

- Validation of ``djmoney.forms.fields.MoneyField`` when ``disabled=True`` is passed to it. :github-issue:`439` (:github-user:`stinovlas`, :github-user:`Stranger6667`)

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**Added**

- Support for indirect rates conversion through maximum 1 extra step (when there is no direct conversion rate:
converting by means of a third currency for which both source and target currency have conversion
rates). :github-issue:`425` (:github-user:`Stranger6667`, :github-user:`77cc33`)

**Fixed**

- Error was raised when trying to do a query with a `ModelWithNullableCurrency`. :github-issue:`427` (:github-user:`Woile`)

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**Added**

- Caching of exchange rates. :github-issue:`398` (:github-user:`Stranger6667`)
- Added support for nullable ``CurrencyField``. :github-issue:`260` (:github-user:`Stranger6667`)

**Fixed**

- Same currency conversion getting MissingRate exception :github-issue:`418` (:github-user:`humrochagf`)
- `TypeError` during templatetag usage inside a for loop on Django 2.0. :github-issue:`402` (:github-user:`f213`)

**Removed**

- Support for Python 3.3 :github-issue:`410` (:github-user:`benjaoming`)
- Deprecated ``choices`` argument from ``djmoney.forms.fields.MoneyField``. Use ``currency_choices`` instead. (:github-user:`Stranger6667`)

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**Fixed**

- Missing in dist, ``djmoney/__init__.py``. :github-issue:`417` (:github-user:`benjaoming`)