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/Mobiles/Special/Paragon.cs

@@ -215,7 +215,7 @@ namespace Server.Mobiles
 
         public static void GiveArtifactTo(Mobile m)
         {
-            var item = (Item)ActivatorUtil.CreateInstance(Artifacts.RandomElement());
+            var item = Artifacts.RandomElement().CreateInstance<Item>();
 
             if (m.AddToBackpack(item))
             {