3.0.0-Beta 3: Custom notification upgrade guide code doesn't work.

[WiXSL]

The code proposed here UPGRADE.md for using custom notifications doesn't seem to be working.

I've added a custom notification for the demo app with the upgrade guide code here:
https://codesandbox.io/s/react-admin-demo-300-gofzw

[WiXSL]

Now i've added styles to avoid the errors, but the notification won't show either way.

[fzaninotto]

I think the UPGRADE snippet misses the end part, which shows that you must connect the component to the Redux store:

import { connect } from 'react-redux';
import {
    complete,
    undo,
    getNotification,
    hideNotification,
    Button,
    undoableEventEmitter
} from 'react-admin';
import compose from 'recompose/compose';

...

const mapStateToProps = state => ({
    notification: getNotification(state),
});

export default compose(
    withStyles(styles),
    connect(
        mapStateToProps,
        {
            complete,
            hideNotification,
            undo,
        }
    )
)(Notification);

Can you confirm that it solves the problem?

[WiXSL]

Ok, now is working. I've updated the PR.

[fzaninotto]

Fixed by #3893