Update to v2.0:
* Update installation routine
* Append public title with Test if the test gateway is being used
* Add cancel url and cancel url text
* Improve before_process() transaction verification
* Store orders flagged as being under review in a new review order status level parameter
* Add some transaction response values to the order status in a new transaction order status level parameter
* Use PHP hash_hmac() function if available to generate the fingerprint hash
* Add new AVS, CVV2, and CAVV level language definitions