pkg: analysis aided cleanup

Removed a lot of warnings and hints when opening many pkg projects in the editor

R=gram@google.com

Review URL: https://codereview.chromium.org//22284003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/mime@25831 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/pubspec.yaml b/pubspec.yaml
index 82493f8..174820c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,6 @@
 name: mime
-author: "Dart Team <misc@dartlang.org>"
+author: Dart Team <misc@dartlang.org>
+description: Helper-package for working with MIME.
 homepage: http://www.dartlang.org
-description: >
- Helper-package for working with MIME.
+dev_dependencies:
+  unittest: any
diff --git a/test/mime_multipart_transformer_test.dart b/test/mime_multipart_transformer_test.dart
index 43b542f..7d7baca 100644
--- a/test/mime_multipart_transformer_test.dart
+++ b/test/mime_multipart_transformer_test.dart
@@ -6,7 +6,6 @@
 import "package:mime/mime.dart";
 import 'dart:async';
 import 'dart:math';
-import 'dart:isolate';
 
 void testParse(String message,
                String boundary,