Get rid of all the library tags.

test/request_test.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_test;
-
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:shelf/shelf.dart';
 import 'package:test/test.dart';
 
 import 'test_util.dart';
 
 Request _request({Map<String, String> headers, body, Encoding encoding}) {
   return new Request("GET", LOCALHOST_URI,
@@ skipping 282 matching lines @@
       var request = _request();
       var changed1 = request.change();
       var changed2 = request.change();
 
       expect(changed2.read().toList(), completion(isEmpty));
       expect(changed1.read, throwsStateError);
       expect(request.read, throwsStateError);
     });
   });
 }