Get rid of all the library tags.

lib/src/request.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.request;
-
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:http_parser/http_parser.dart';
 
 import 'hijack_exception.dart';
 import 'message.dart';
 import 'util.dart';
 
 /// A callback provided by a Shelf handler that's passed to [Request.hijack].
@@ skipping 329 matching lines @@
     return handlerPath;
   } else if (url != null) {
     if (url.path.isEmpty) return requestedUri.path;
 
     var index = requestedUri.path.indexOf(url.path);
     return requestedUri.path.substring(0, index);
   } else {
     return '/';
   }
 }