* Enabled gzip encoding for HTTP requests * Fixed handling of long integers when generating xml (thanks [glencoates](https://github.com/glencoates)) * Added new error code
2.10.0
* Added subscription_details to Transaction * Added flag to store in vault only when a transaction is successful * Added new error code
2.9.1
* Added improvements to unicode handling.
2.9.0
* Added a new transaction state, AuthorizationExpired. * Enabled searching by authorization_expired_at.
2.8.0
* Added next_billing_date and transaction_id to subscription search * Added address_country_name to customer search * Added new error codes