Patches are not dispatched after mutation methods usage

For exemple this doesn't work:

```js
const myList = new ObservableArray([0,1]);
myList.push("I am going to hide some changes.");
		
//not working
canReflect.onPatches(myList, function (patches) {
    console.log(patches[0].insert[0]);   // -> 'Patched after push' not working
});
	
myList[1] = "Patched after push";
```