configuration.rb in bckbn-1.0.0

- old
+ new

@@ -7,9 +7,10 @@
     api_version
     api_base
     log_level
     merchant_id
     source_ip_address
+    idempotency_key
   ].freeze
 
   Configuration = Struct.new(*CONFIG_OPTIONS, keyword_init: true) do
     def self.setup
       new