Stack V2 support 🎉🎉

Features

• Add support for react-navigation-stack@2
• Add support for nested navigators

BREAKING CHANGES

• The createSharedElementStackNavigator function has changed. It no longer takes the createStackNavigator function as an input.

Previous (v1):

import { createSharedElementStackNavigator } from 'react-navigation-shared-element';
import { createStackNavigator } from 'react-navigation-stack';

const stackNav = createSharedElementStackNavigator(
  createStackNavigator,
  {
    Main: MainScreen,
    ...
  },
  {...}
);

Now (v2):

import { createSharedElementStackNavigator } from 'react-navigation-shared-element';

const stackNav = createSharedElementStackNavigator(
  {
    Main: MainScreen,
    ...
  },
  {...}
);