Fixes dupe exception (#258)

- [X] Cleans up ActivatorUtil
- [X] Fixes dupe exception
- [X] Fixes a bug in BasePotion
- [X] Fixes a few possible memory leaks

Bumps release version

Projects/UOContent/Engines/Harvest/Core/HarvestSystem.cs

@@ -268,7 +268,7 @@ namespace Server.Engines.Harvest
         {
             try
             {
-                return ActivatorUtil.CreateInstance(type) as Item;
+                return type.CreateInstance<Item>();
             }
             catch
             {