redux 2.0.3 changelog | Dart package

2.0.3 #

Breaking API Changes:
- Reducer is now a typedef. Use ReducerClass<State> if you'd like to continue to use a class interface.
- Middleware is now a typedef. Use MiddlewareClass<State> as a replacement for the old Middleware<State, Action>
- A teardown method has been added. Use it to shut down the store in the middle of your application lifecycle if you no longer need the store.
Added more docs