Adds PUT method to OpenAPI spec. Given that the transaction IDs are generated on server-side, for the PUT method to remain idempotent, it can only update existing transactions. It also adds a TransactionExists method on the DAL. Issue: #20
Adds PUT method to OpenAPI spec. Given that the transaction IDs are generated on server-side, for the PUT method to remain idempotent, it can only update existing transactions. It also adds a TransactionExists method on the DAL. Issue: #20