Get rid of all the library tags.

lib/src/response.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 shelf.response;
-
 import 'dart:convert';
 
 import 'package:http_parser/http_parser.dart';
 
 import 'message.dart';
 import 'util.dart';
 
 /// The response returned by a [Handler].
 class Response extends Message {
   /// The HTTP status code of the response.
@@ skipping 245 matching lines @@
 /// Converts [location], which may be a [String] or a [Uri], to a [String].
 ///
 /// Throws an [ArgumentError] if [location] isn't a [String] or a [Uri].
 String _locationToString(location) {
   if (location is String) return location;
   if (location is Uri) return location.toString();
 
   throw new ArgumentError('Response location must be a String or Uri, was '
       '"$location".');
 }