message: testing returns some keys, but not ones that are omitted
diff: @@ -73,6 +73,14 @@ describe("Synth", () => {
  simple.dispose();
  });
  + it("can get does not include omited oscillator attributes", () => {
  + const simple = new Synth();
  + expect(simple.get().oscillator).to.not.have.key("frequency");
  + expect(simple.get().oscillator).to.not.have.key("detune");
  + expect(Object.keys(simple.get().oscillator)).to.include("type");
  + simple.dispose();
  + });
  +
  it("can be trigged with a Tone.Frequency", () => {
  return Offline(() => {
  const synth = new Synth().toDestination();
  