AI engine changes (#1042)

Robust.Server/AI/AiLogicProcessor.cs

@@ -22,6 +22,11 @@ namespace Robust.Server.AI
         /// </summary>
         public virtual void Setup() { }
 
+        /// <summary>
+        /// One-Time shutdown when processor is done
+        /// </summary>
+        public virtual void Shutdown() {}
+
         /// <summary>
         ///     Gives life to the AI.
         /// </summary>

Robust.Shared/Utility/PriorityQueue.cs

@@ -37,7 +37,7 @@ namespace Robust.Shared.Utility
     /// KeyValuePair or a custom class and provide corresponding Comparer.
     /// </summary>
     /// <typeparam name="T">Any comparable type, either through a specified Comparer or implementing IComparable&lt;<typeparamref name="T"/>&gt;</typeparam>
-    internal sealed class PriorityQueue<T> : ICollection<T>
+    public sealed class PriorityQueue<T> : ICollection<T>
     {
         private readonly IComparer<T> _comparer;
         private T[] _heap;