Ensure object property order

[suguru03]

Aigle functions should return the same order (it is not ensured by engines).

(async () => {
  const obj1 = {
    task1: Aigle.delay(30, 1),
    task2: Aigle.delay(20, 2),
    task3: Aigle.delay(10, 3)
  };
  const res1 = await Aigle.props(obj1);
  console.log(res1);
  // { task3: 3, task2: 2, task1: 1 }
  // ↓
  // { task1: 1, task2: 2, task3: 3 }

  const obj2 = {
    task1: 1,
    task2: 2,
    task3: 3
  };
  const res2 = await Aigle.mapValues(obj2, val => Aigle.delay(val * 10, val));
  console.log(res2);
  // { task3: 3, task2: 2, task1: 1 }
  // ↓
  // { task1: 1, task2: 2, task3: 3 }
})();