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== 0.2.3 2011-2-10* Supports Amazon Signature Version 2* Updated for Rails 3== 0.2.2 2009-06-07* Added Donation service support.== 0.2.1 2009-01-06* Maintenance release for missing files.== 0.2.0 2009-01-03* Added Marketplace Service support [Nick Plante (zapnap)]* Added Standard and Subscription documentation.* Added a submit tag override to simplepay_form_for helper.* Added a Simplepay::ResponseStatusCode::All shortcut.== 0.1.1 2008-12-11* Added a NotificationHelper to aid with Amazon IPN validation.* Updated the Rails helper and added more detailed documentation.== 0.1.0 2008-12-05* Initial release* Supports Amazon Simple Pay Standard and the-soon-to-be-released Subscriptions* Generates your dynamic service HTML forms automatically.