Checkbox onChange event only returns true or false

[rickysway]

Issue
Checkbox onChange event only returns true|false (is missing event id and value) as indicated in the code
https://github.com/carbon-design-system/carbon-components-react/blob/master/src/components/Checkbox/Checkbox.js#L113

Recreate Issue
Using https://codesandbox.io/s/github/carbon-design-system/carbon/tree/master/packages/react/examples/codesandbox

1. Update index.js

import React from "react";
import { render } from "react-dom";
import { Checkbox } from "carbon-components-react";

const App = () => (
  <div>
    <Checkbox
      labelText="Do you agree?"
      id="testID"
      onChange={event => {
        console.log(event)
      }}
    />
  </div>
);

render(<App />, document.getElementById("root"));

2. Click the checkbox
3. Click Console to see event only outputs true|false (no id returned)

[emyarod]

based on https://github.com/carbon-design-system/carbon/blob/master/packages/react/src/components/Checkbox/Checkbox.js#L45 it looks like the event object should be returned as the 3rd parameter. we should change this to match the other change handlers in the codebase in the next major release