Roll Observatory packages and add a roll script

quiver/lib/time.dart

Index: quiver/lib/time.dart
diff --git a/quiver/lib/time.dart b/quiver/lib/time.dart
deleted file mode 100644
index e71b2d3aa7efa644af5b79b814bab0189980000f..0000000000000000000000000000000000000000
--- a/quiver/lib/time.dart
+++ /dev/null
@@ -1,18 +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.time;
-
-part 'src/time/clock.dart';
-part 'src/time/duration_unit_constants.dart';