Exception throwing when required, and fixes for unit tests

Ycicle/Program.cs

@@ -13,7 +13,10 @@ namespace Ycicle
         {
             Console.WriteLine("Upsilon REPL");
             Script script = null;
-            var (evaluationScope, boundScope) = StaticScope.CreateStandardLibrary();
+            var options = new ScriptOptions()
+            {
+                ThrowExceptionOnError = false
+            };
 
             while (true)
             {
@@ -21,7 +24,7 @@ namespace Ycicle
                 var input = Console.ReadLine();
                 if (input == "exit") return;
                 script = script == null
-                    ? Executor.ParseInput(input)
+                    ? Executor.ParseInput(input, options)
                     : Executor.ContinueWith(script, input);
 
                 if (script.Diagnostics.Messages.Count > 0)