Klarna paymnet type, payment method removable flag
Parse payment token type
Allow specifying orderRef in payment context

LTQR sessionId -> orderReference
paymet update notification: txn_id -> orderRef

for backwards compatibility txn_id can still be used yet will be removed
in a next release
[maven-release-plugin] prepare release 2.17
[maven-release-plugin] rollback changes from release preparation of 2.17