backup. before shop update

lib/store/reducer/last_visit_reducer.dart

@@ -0,0 +1,11 @@
+import 'package:redux/redux.dart';
+
+import '../actions.dart';
+
+final lastVisitReducer = combineReducers<List<int>>([
+  TypedReducer<List<int>, UpdateLastVisit>(_updateLastVisit)
+]);
+
+List<int> _updateLastVisit(List<int> lastVisit, action) {
+  return action.lastVisit;
+}