message: Change const to var for ES5 compatibility
diff: @@ -314,7 +314,7 @@ Object.defineProperty(Tone.Oscillator.prototype, "partialCount", {
  * @returns {Object}
  */
  Tone.Oscillator.prototype.get = function(){
  - const values = Tone.prototype.get.apply(this, arguments);
  + var values = Tone.prototype.get.apply(this, arguments);
  if (values.type !== Tone.Oscillator.Type.Custom){
  delete values.partials;
  }
  