Get rid of all the library tags.

lib/src/barback/excluding_aggregate_transformer.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library pub.excluding_aggregate_transformer;
-
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 
 import 'transformer_config.dart';
 
 /// Decorates an inner [AggregateTransformer] and handles including and
 /// excluding primary inputs.
 class ExcludingAggregateTransformer extends AggregateTransformer {
   /// If [config] defines includes or excludes, wraps [inner] in an
@@ skipping 43 matching lines @@
       (_inner as DeclaringAggregateTransformer).declareOutputs(transform);
 }
 
 class _LazyExcludingAggregateTransformer
     extends _DeclaringExcludingAggregateTransformer
     implements LazyAggregateTransformer {
   _LazyExcludingAggregateTransformer(DeclaringAggregateTransformer inner,
         TransformerConfig config)
       : super(inner, config);
 }