anchor.diff:      Classifier = fun({Key,_}, Type) when (is_binary(Key) orelse is_list(Key)),
                                            Type /= array, Type /= string ->
                            struct;
  -                    (C, Type) when is_integer(C), C >= 0, C =< 256,
  +                    (C, Type) when is_integer(C), C >= 0, C < 256,
                                      Type /= array, Type /= struct ->
                            string;
                       (_, _) ->
  
positive.code:               %% When the user metadata is empty, it should still be a struct
                ({?MD_USERMETA, []}) ->
                     {?MD_USERMETA, {struct, []}};
                ({<<"Links">>, Links}) ->
                     {<<"Links">>, [ [B, K, T] || {{B, K}, T} <- Links ]};
                ({Name, List=[_|_]}) ->
                     {Name, jsonify_metadata_list(List)};
                ({Name, Value}) ->
  
negative.code:                   {<<"data">>, D}|T], Accum) ->
      Converter = fun({Key, Val}) ->
                          case Key of
                              ?MD_LINKS ->
                                  {Key, [{{B, K}, Tag} || [B, K, Tag] <- Val]};
                              ?MD_LASTMOD ->
                                  {Key, os:timestamp()};
                              _ ->
                                  {Key, if
  