Update charted to 0.4.8 and roll

packages/quiver/test/all_tests.dart

 // Copyright 2013 Google Inc. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 library quiver.all_tests;
 
 import 'async/all_tests.dart' as async;
 import 'cache/map_cache_test.dart' as cache;
 import 'check_test.dart' as check;
 import 'collection/all_tests.dart' as collection;
 import 'core/all_tests.dart' as core;
 import 'io_test.dart' as io;
 import 'iterables/all_tests.dart' as iterables;
 import 'mirrors_test.dart' as mirrors;
 import 'pattern/all_tests.dart' as pattern;
-import 'streams/all_tests.dart' as streams;
 import 'strings_test.dart' as strings;
 import 'testing/all_tests.dart' as testing;
 import 'time/all_tests.dart' as time;
 
 main() {
   async.main();
   cache.main();
   check.main();
   collection.main();
   core.main();
   io.main();
   iterables.main();
   mirrors.main();
   pattern.main();
-  streams.main();
   strings.main();
   testing.main();
   time.main();
 }