message: testing removing objects the timeline doesn't have
  should do nothing
diff: @@ -75,6 +75,20 @@ define(["Test", "Tone/core/Timeline"], function (Test, Timeline) {
  sched.dispose();
  });
  + it ("has no effect to remove an object which is not there", function(){
  + var sched = new Timeline();
  + sched.add({
  + "time" : 2
  + });
  + sched.remove({});
  + expect(sched.length).to.equal(1);
  + sched.forEach(function(event){
  + sched.remove({});
  + });
  + expect(sched.length).to.equal(1);
  + sched.dispose();
  + });
  +
  it ("can search for events in the timeline by time", function(){
  var sched = new Timeline();
  