1.0.36

• Bumped minimum version of PHP supported, to 7.4
• Fixed typing bug in PaymentWindow object

1.0.35

• Add input validation for transaction identifiers to prevent invalid API calls
• Add input validation and unit tests for SubscriptionService methods
• Added new cart parameters to payment creation objects

1.0.34

• Add surcharge fields to payment create API calls

1.0.33

• Added full test of Oauth2 in API client
• Fix user agent being set incorrectly in get requests
• Add support for surcharge
• Integrated Oauth2 client fully into SDK
• Raised timeout of curl client to 30 seconds

1.0.30

• Allow a broader selection of characters in cartinfo account id
• Added direction parameter to transaction and subscription lists
• Added missing enum for Klarna

1.0.29

• Added Klarna method

1.0.28

• Added user agent to get requests as well like with posts seen in #82

1.0.27

• Added custom user agent to header of API calls, and let window platform inherit this value if not otherwise set (#82)

1.0.26

• Add transaction creation from subscription flag in payment creation trough API

1.0.25

• Updated readme with info about htmlentity escaping field values.
• Added check for negative values in paymentWindow Cart object.
• Allow whitespace and hyphen characters in PostalCode fields in PaymentInfo object.