This version was released to fix the Security Header problem that appeared
when users would switch to LIVE mode.
Simply changed the urls to the API in the live wsdl document to point to
https://api-3t.paypal.com/2.0/ and https://api-aa-3t.paypal.com/2.0/
Before now, the ones in live were pointing to the same one in the sandbox
environment and this caused a security header error to come up when users
switched to live mode.
The new version still supports the TransactionSearch and
GetTransactionDetails operations. The previous versions only supported 4
methods namely: DoDirectPayment, SetExpressCheckout,
GetExpressCheckoutDetails and DoExpressCheckoutPayment.
So phpPaypalPro now supports 6 operations available from the Paypal Website
Payments Pro SOAP API.