Inventory

Capability mix-in for entities that own a inventory plus an optional equipped weapon.

• inventory – list of items currently held.

• weapon – optional equipped Weapon.

• equipWeapon – returns a new instance with the weapon set.

• addItem – adds an item to the inventory.

• getItem – finds an item by (trimmed, case-insensitive) name.

• removeItem – deletes an item from the inventory.