update diagram

README.md

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+```mermaid
+classDiagram
+    class IEquipment{
+        <<interface>>
+        +void Equip()
+        +void Unequip()
+    }
+    Food ..|> IEquipment
+
+    class Person{
+        <<abstract>>
+        +string Name
+        +int Health
+        +List~Equipment~ Inventory
+        +Location Location
+        +int Money
+        +int Age
+        +void Walk()
+    }
+    AdultCitizen --|> Person
+    ChildCitizen --|> Person
+    IEquipment ..|> Person
+
+    class AdultCitizen{
+    }
+    class ChildCitizen{
+    }
+
+    class Location{
+        <<abstract>>
+        +string Name
+    }
+    Bank --|> Location
+    Store --|> Location
+    Person ..|> Location
+
+    class Logger{
+        <<singleton>>
+        +void Log()
+    }
+
+    class Food{
+        +string Name
+        +int HealthPoints
+    }
+
+    class Gun{
+        +string Name
+        +int Damage
+    }
+
+    class Store{
+        +Dictionary~IEquipment int~ Inventory
+    }
+    GunStore --|> Store
+    EggStore --|> Store
+    IEquipment --|> Store
+
+    class SimulationManager{
+        +void StartSim()
+        +List~Equipment~ Equipment
+        +List~Location~ Locations
+    }
+    IEquipment ..|> SimulationManager
+    Person ..|> SimulationManager
+    Location ..|> SimulationManager
+
+```