Roll Observatory packages and add a roll script

quiver/lib/streams.dart

Index: quiver/lib/streams.dart
diff --git a/quiver/lib/streams.dart b/quiver/lib/streams.dart
deleted file mode 100644
index 0480a29aa0e65c6e21e20e562648e485d8e1a604..0000000000000000000000000000000000000000
--- a/quiver/lib/streams.dart
+++ /dev/null
@@ -1,23 +0,0 @@
-// 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.streams;
-
-import 'dart:async';
-import 'package:quiver/iterables.dart' show IndexedValue;
-
-part 'src/streams/collect.dart';
-part 'src/streams/concat.dart';
-part 'src/streams/enumerate.dart';
-part 'src/streams/streambuffer.dart';