App Bridge: Update to v1.3.0

[vividviolet]

WHY are these changes introduced?

Fixes #998
Fixes #1028

Allows apps to subscribe to redirect actions and handle its own redirects. This allows single page apps using its own routing (ex. React Router) to navigate without reloading the app.

Before (iframe is reloaded)

After (iframe is not reloaded)

Using a custom handler for app redirects

The following is an example of a component utilizing the App Bridge context from Polaris to subscribe to redirects and add its own handler.

import { RouterProps } from 'react-router';

export default class Section extends React.Component {
  static contextTypes = {
    polaris: PropTypes.object,
  };

  cleanup = () => {};

  componentDidMount() {
    const {
      polaris: { appBridge },
    } = this.context;
    this.cleanup = appBridge.subscribe(Redirect.ActionType.APP, ({ path }) => {
      // Call your own method here with the relative app path
    });
  }

  componentWillUnmount() {
   // Clean up subscriptions when component unmounts
    this.cleanup();
  }
}

WHAT is this pull request doing?

Update to use App Bridge v1.3.0

How to 🎩

1. Clone https://github.com/Shopify/app-bridge-test-apps and do cd app-bridge-polaris-react-router
2. Run dev up
3. Navigate to the directory containing polaris-react and do yarn build-consumer app-bridge-test-apps/app-bridge-polaris-react-router.
4. Navigate back to the test app directory and follow the instructions to install the app on either local Shopify or a production store
5. Open the app and verify that clicking on the secondary navigation redirects to the correct page without reloading the iframe
6. Verify that clicking on the app name or app icon when NOT on the index page navigates back to the index page without reloading the iframe

[MattLiang]

🎩 Looks good! Can't wait to try it out.

[tmlayton]

Typo here, should be 1.3.0

[vividviolet]

My bad! I'll put up another pr to fix it