1.5

The major change here is an implementation of Cancel Payment Request.

Full Changelog: 1.4...1.5

1.4

Add method to get QR Codes for app activation.

Full Changelog: 1.3...1.4

1.3

Small code cleanups in advance of some additions.

1.2

Updated Swish environments to reflect those available today: MSS (Merchant Swish Simulator), Sandbox, Production. Test, the old name for MSS, will be removed in version 2.0 (whenever that is made).
Added callbackIdentifier to fields to expect back in JSON responses.