* Added customization options and callbacks to Xapo micro payment tool.
0.2.1
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* Added xapo_api module, including the credit api v0 (this is about to change soon in the incoming v1 api). * Introduced xapo_tool.PaymentType constants.
0.2.0
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* Having a TPA is not longer mandatory to provide a micro payments widget. Parameters app_id and app_secret are now optional.
0.0.1
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* First release on PyPI. * Includes: * iframe widget * div widget