Resolves issue with overflow state processing. Displays the overflow

state in the Message field of the channel metadata table column instead
of displaying it in the channel state column.

src/main/java/io/github/dsheirer/channel/state/State.java

@@ -175,4 +175,10 @@ public enum State
     {
         return mDisplayValue;
     }
+
+    @Override
+    public String toString()
+    {
+        return mDisplayValue;
+    }
 }