added history

plantuml/history/01_lower-both-values.puml

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+@startuml
+
+start
+note left
+    Do this for each item in the list.
+    An item has a name, a sell in value and a quality value
+end note
+
+-lower quality with 1
+
+-lower sell in with 1
+
+stop
+
+@enduml