Update charted to 0.4.8 and roll

packages/async/lib/async.dart

Index: packages/async/lib/async.dart
diff --git a/packages/async/lib/async.dart b/packages/async/lib/async.dart
index 9da3552b049118a7dc4f06a4a5b5c91c249514f3..e09003261732af4e7ec770d76444f6f292d316a1 100644
--- a/packages/async/lib/async.dart
+++ b/packages/async/lib/async.dart
@@ -2,23 +2,35 @@
 // 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 dart.pkg.async;
-
-export "result.dart";
+export "src/async_cache.dart";
 export "src/async_memoizer.dart";
+export "src/byte_collector.dart";
 export "src/cancelable_operation.dart";
 export "src/delegate/event_sink.dart";
 export "src/delegate/future.dart";
 export "src/delegate/sink.dart";
+export "src/delegate/stream.dart";
 export "src/delegate/stream_consumer.dart";
 export "src/delegate/stream_sink.dart";
 export "src/delegate/stream_subscription.dart";
 export "src/future_group.dart";
+export "src/lazy_stream.dart";
+export "src/null_stream_sink.dart";
 export "src/restartable_timer.dart";
-export "src/result_future.dart";
+export "src/result.dart";
+export "src/result/capture_transformer.dart";
+export "src/result/error.dart";
+export "src/result/future.dart";
+export "src/result/release_transformer.dart";
+export "src/result/value.dart";
+export "src/single_subscription_transformer.dart";
 export "src/stream_completer.dart";
 export "src/stream_group.dart";
 export "src/stream_queue.dart";
+export "src/stream_sink_completer.dart";
+export "src/stream_sink_transformer.dart";
 export "src/stream_splitter.dart";
+export "src/stream_subscription_transformer.dart";
+export "src/stream_zip.dart";
 export "src/subscription_stream.dart";
-export "stream_zip.dart";
+export "src/typed_stream_transformer.dart";