Grab stacktrace on signal.

PkmnLibSharpTests/TestClass.cs

@@ -3,6 +3,7 @@ using System.Reflection;
 using System.Runtime.InteropServices;
 using NUnit.Framework;
 using PkmnLibSharp.Battling;
+using PkmnLibSharp.Utilities;
 
 namespace PkmnLibSharpTests
 {
@@ -20,6 +21,8 @@ namespace PkmnLibSharpTests
             {
                 Console.WriteLine($"[{level.ToString().ToUpperInvariant()}] {s}");
             });
+            
+            SignalHandler.SetSignalListener(s => throw new Exception("Encountered a catastrophic signal. \n" + s));
         }
     }
 }