Merge pull request 'Add subfields to usernames and following' (#89) from kat/usernames-following-response into master

Reviewed-on: #89

src/operations/user.gql

@@ -71,7 +71,10 @@ query getUsernamesAndFollowing(
   ) {
     followers
     following
-    usernames
+    usernamesAndIds {
+      username
+      id
+    }
   }
 }