Finished runner library

test/scripts/lib/runner/sample_1.toy

@@ -0,0 +1,9 @@
+import runner;
+
+//delegate to the other sample script
+var s = loadScript("scripts:/lib/runner/sample_2.toy");
+
+s.runScript();
+
+s.freeScript();
+

test/scripts/lib/runner/sample_2.toy

@@ -0,0 +1 @@
+assert true, "Nested sample scripts worked";