Update charted to 0.4.8 and roll

packages/quiver/test/async/concat_test.dart

Index: packages/quiver/test/async/concat_test.dart
diff --git a/packages/quiver/test/streams/concat_test.dart b/packages/quiver/test/async/concat_test.dart
similarity index 90%
rename from packages/quiver/test/streams/concat_test.dart
rename to packages/quiver/test/async/concat_test.dart
index 7c05b0cee791ceeb47e1309ab976bbe3f9b147fb..3b70bfd4e46c54b53ada7b0f6c5f7f27e286fa5a 100644
--- a/packages/quiver/test/streams/concat_test.dart
+++ b/packages/quiver/test/async/concat_test.dart
@@ -12,12 +12,12 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-library quiver.streams.concat_test;
+library quiver.async.concat_test;
 
 import 'dart:async';
 
 import 'package:test/test.dart';
-import 'package:quiver/streams.dart';
+import 'package:quiver/async.dart';
 
 main() {
   group('concat', () {
@@ -68,15 +68,13 @@ main() {
     });
 
     test('should forward pause, resume, and cancel to current stream', () {
-      var wasPaused = false,
-          wasResumed = false,
-          wasCanceled = false;
+      var wasPaused = false, wasResumed = false, wasCanceled = false;
       var controller = new StreamController<String>(
           onPause: () => wasPaused = true,
           onResume: () => wasResumed = true,
           onCancel: () {
-        wasCanceled = true;
-      });
+            wasCanceled = true;
+          });
       var concatenated = concat([controller.stream]);
       var subscription = concatenated.listen(null);
       controller.add('a');
@@ -95,14 +93,13 @@ main() {
     });
 
     test('should forward iteration error and stop', () {
-      var data = [],
-          errors = [];
+      var data = [], errors = [];
       var badIteration =
           ['e', 'this should not get thrown'].map((message) => throw message);
-      var concatenated = concat(badIteration);
+      var concatenated = concat(badIteration as Iterable<Stream>);
       var completer = new Completer();
-      concatenated
-          .listen(data.add, onError: errors.add, onDone: completer.complete);
+      concatenated.listen(data.add,
+          onError: errors.add, onDone: completer.complete);
       return completer.future.then((_) {
         expect(data, []);
         expect(errors, ['e']);