Fix for no key issue

Now if location has no key, it is assumed that history hasn't updated

client/history-saga.js

@@ -35,7 +35,7 @@ export default function historySaga(
       }
 
       // store location has changed, update history
-      if (location.key !== prevKey) {
+      if (!location.key || location.key !== prevKey) {
         isSyncing = true;
         history.transitionTo({ ...emptyLocation, ...location });
         isSyncing = false;

client/index.js

@@ -51,9 +51,7 @@ app$({ history, location: appLocation })
 
     const routerState$ = appStore$
       .map(({ location }) => location)
-      .distinctUntilChanged(
-        location => location && location.key ? location.key : location
-      );
+      .filter(location => !!location);
 
     // set page title
     appStore$