Add TypeContainer toString overrides

Upsilon/BaseTypes/TypeContainer.cs

@@ -52,6 +52,11 @@ namespace Upsilon.BaseTypes
         {
             return !Equals(a, b);
         }
+
+        public override string ToString()
+        {
+            return Type.ToString();
+        }
     }
 
     public class CompositeTypeContainer : TypeContainer
@@ -61,5 +66,10 @@ namespace Upsilon.BaseTypes
         public CompositeTypeContainer() : base(Type.Table)
         {
         }
+
+        public override string ToString()
+        {
+            return $"{Type.ToString()} ({string.Join(", ", Types)})";
+        }
     }
 }