To fix it opening the app in the same window (fe in whatsapp and not going to desired screen but instead only to login screen and then home screen instead of book/0 or book/2).
* move snippets into old_snippets directory
* add new navigation_and_routing sample
* add copyright headers
* Apply #827 to old_snippets/ directory and upgrade them to null safety
* Code review comments
- Move Guard class into parser.dart
- Move usage of guards from Delegate to RouteInformationParser
- Rename delegate to SimpleRouterDelegate
* clean up imports
* refactor settings screen, fix bug
* avoid conflicting paths /books/new and /books/1 - rename to book/1
* dispose fields in _BookstoreState class
* remove /books path
This was causing problems
* add comment
* Change BookstoreAuthScope and BookstoreAuthScope to InheritedNotifier
* fix warnings
* Make the initial route configurable, set to '/signin'
* Enable deep linking
https://flutter.dev/docs/development/ui/navigation/deep-linking
* use path URL strategy on the web.
* remove TODO, add comment
