Upgrade to React Navigation v4

{
  "dependencies": {
    "react": "16.9.0",
    "react-native": "0.61.2",
    "react-native-gesture-handler": "^1.4.1",
    "react-native-reanimated": "^1.3.0",
    "react-native-screens": "^2.0.0-alpha.4",
    "react-navigation": "^4.0.10",
    "react-navigation-drawer": "^2.2.2",
    "react-navigation-stack": "^1.9.4",
    "react-navigation-tabs": "^2.5.6"
  }
}