Update Changelog.

sdk/lib/async/stream.dart

 // Copyright (c) 2013, 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.
 
 part of dart.async;
 
 // -------------------------------------------------------------------
 // Core Stream types
 // -------------------------------------------------------------------
 
@@ skipping 1287 matching lines @@
               () {
                 subscription.resume();
                 timer = zone.createTimer(timeLimit, timeout);
               },
               onCancel);
     return controller.stream;
   }
 }
 
 /**
- * A subscritption on events from a [Stream].
+ * A subscription on events from a [Stream].
  *
  * When you listen on a [Stream] using [Stream.listen],
  * a [StreamSubscription] object is returned.
  *
  * The subscription provides events to the listener,
  * and holds the callbacks used to handle the events.
  * The subscription can also be used to unsubscribe from the events,
  * or to temporarily pause the events from the stream.
  */
 abstract class StreamSubscription<T> {
@@ skipping 416 matching lines @@
 class _ControllerEventSinkWrapper<T> implements EventSink<T> {
   EventSink _sink;
   _ControllerEventSinkWrapper(this._sink);
 
   void add(T data) { _sink.add(data); }
   void addError(error, [StackTrace stackTrace]) {
     _sink.addError(error, stackTrace);
   }
   void close() { _sink.close(); }
 }