fix(classes): cleanup resources, add cancellable timeouts, and fix bugs in several core utility classes

ts/classes.looptracker.ts

@@ -20,4 +20,18 @@ export class LoopTracker<T> {
       return false;
     }
   }
+
+  /**
+   * resets the loop tracker, clearing all tracked objects
+   */
+  public reset() {
+    this.referenceObjectMap.wipe();
+  }
+
+  /**
+   * destroys the loop tracker and its underlying ObjectMap
+   */
+  public destroy() {
+    this.referenceObjectMap.destroy();
+  }
 }