v1.0.4

• Improve Notification validation
• Stricter check if verifying Worldpay Notifications' origin by reverse DNS hostname

v1.0.3

• More specific error messages for invalid Notification data

v1.0.2

• Enforce Notification data being provided as string

v1.0.1

• Fix using custom usernames from Gateway credentials

v1.0.0

• Update documentation around configuring Notifications
• First 1.x tag, fixes #3

v0.0.10 - Make billing address optional

Merge pull request #12 from comicrelief/GP-728-support-no-address-mode

GP-728 - Make billing address optional

v0.0.9 - Change default order description

• Change default description to 'Merchandise'

v0.0.8 - Add Notification card type

• Provide getCardType() helper for Notifications

v0.0.7 - Fix `notificationId` retrieval

• getNotificationId() on Responses and Notifications now returns a string as expected, instead of having to be cast to one later

v0.0.6 - Username support and fixed error processing

• Support 'username' parameter for more secure basic authentication, falling back to 'merchant' if not set
• Correctly get specific messages from XML errors
• Handle and test missing authentication errors better