Move up non-generic collection types and add debug view.

Assets/Cryville/Common/Collections/PairList.cs

@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace Cryville.Common.Collections {
+	[DebuggerDisplay("Count = {Count}"), DebuggerTypeProxy(typeof(PairListDebugView))]
+	public class PairList : List<KeyValuePair<object, object>>, IPairList {
+		public void Add(object key, object value) {
+			Add(new KeyValuePair<object, object>(key, value));
+		}
+
+		public void Insert(int index, object key, object value) {
+			Insert(index, new KeyValuePair<object, object>(key, value));
+		}
+	}
+	internal class PairListDebugView {
+		readonly PairList _self;
+		public PairListDebugView(PairList self) {
+			_self = self;
+		}
+		[DebuggerBrowsable(DebuggerBrowsableState.RootHidden)]
+		public KeyValuePair<object, object>[] Items {
+			get {
+				KeyValuePair<object, object>[] array = new KeyValuePair<object, object>[_self.Count];
+				_self.CopyTo(array, 0);
+				return array;
+			}
+		}
+	}
+}