reduxPlugin typing is broken

[eatonphil]

Hey! I just noticed an issue in the typing of redux-router5 (redux-router5 v6.0.0, react-router5 v6.0.1, router5 v6.2.2).

./node_modules/redux-router5/index.d.ts
(17,28): Type 'TState' does not satisfy the constraint 'Action<any>'.
  Type '{ router: RouterState; }' is not assignable to type 'Action<any>'.
    Property 'type' is missing in type '{ router: RouterState; }'.

The issue appears to be in the reduxPlugin function type. When you are typing the dispatch argument, I believe it expects an object with a type field. But the current typing doesn't include a type field. I deleted this function definition locally and my build completed.