Support notification signature validation
See issue #9
Also removed PHP 5.6 test support. PHP 7.x syntax used, though only in the acceptNotification
handler for now.
Released as minor version, as sites not using the signature will fail until they either supply a signatureKey
, or set the disableWebhookSignature
flag - $gateway->setDisableWebhookSignature(true)
- to suppress the assertion.