No reference needed.
Update AbstractRequest.php
Update AbstractRequest.php

fixed NULL for codesniffer.
Merge pull request #18 from bweston92/patch-1

No reference needed.
Add isCancelled to ResponseInterface

As discussed in https://github.com/thephpleague/omnipay/issues/202
Merge pull request #19 from barryvdh/iscancelled

Add isCancelled to ResponseInterface
FetchTransactionResponseInterface and TransactionInterface
Added DocumentNumber and DocumentType to CreditCard class
Added AdvancedPaymentResponseInterface and BarcodePaymentResponseInterface
Update composer.json extra branch-alias "dev-master" to "2.3.x-dev"
Add parameters TAX and TAX_BASE