Mud Designer:

- Currency Editor no longer adds duplicate currencies when saved.
 - Currency Editor now overwrites existing currencies.
 - Fixed Currency Editor looking for .xml filetypes instead of .currency filetypes. Saved Currencies now show up in the currency list

Mud Engine:
 - Removed IsSafe property from BaseObject as not all objects will need this property.
 - Added IsSafe property to Zone.cs
 - Added IsSafe property to Room.cs.

Mud Designer/MudEngine/GameObjects/BaseObject.cs

@@ -79,14 +79,6 @@ namespace MudDesigner.MudEngine.GameObjects
             set;
         }
 
-        [Category("Environment Information")]
-        [DefaultValue(false)]
-        public bool IsSafe
-        {
-            get;
-            set;
-        }
-
         private string _Filename = "";
         private string _Name = "";
         /// <summary>