NVP is the only kind of request supported.
Moved all request files in paypal/
$_get is a reference of $_data.
Added documentation.
IPN will be reported.
Added documentation.
Improved IPN.
Uses ORM::run_filter function for applying filters.
Added reference for run_filter function.
client => options becomes curl_options
Fixed Javascript in dodirectpayment view.
Fixed getexpresscheckoutdetails view.