Altapay

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**API Change**

- **Backwards incompatible** ``altapay.Transaction.capture()`` will now return an ``altapay.Callback`` object instead of a ``altapay.Transaction`` object

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**First Production Release**

**Features**

- Addded ``altapay.Transaction.release()``

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**Improvements**

- **Backwards incompatible** Moved ``altapay.Transaction.create_invoice_reservation()`` to ``altapay.Callback.create_invoice_reservation()``. The method will now return a ``altapay.Callback`` object in order to read the result key (41)

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**Features**

- Added ``altapay.Transaction.create_invoice_reservation()``

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**Improvements**

- **Backwards incompatible** Changed the name of ``altapay.Transaction.reserve()`` to ``altapay.Transaction.reserve_subscription_charge()``

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**Features**

- Added ``altapay.Transaction.reserve()`` which will reserve an amount on a subscription