Rev pub packages

packages/flutter/pubspec.yaml

 name: flutter
-version: 0.0.12
+version: 0.0.13
 author: Flutter Authors <flutter-dev@googlegroups.com>
 description: A framework for writing Flutter applications
 homepage: http://flutter.io
@@ -9,8 +9,8 @@ dependencies:
   material_design_icons: '>=0.0.3 <0.1.0'
   mojo_sdk: 0.1.0
   newton: '>=0.1.4 <0.2.0'
-  sky_engine: 0.0.42
-  sky_services: 0.0.42
+  sky_engine: 0.0.43
+  sky_services: 0.0.43
   sky_tools: '>=0.0.25 <0.1.0'
   vector_math: '>=1.4.3 <2.0.0'
 environment:

packages/flutter_sprites/pubspec.yaml

 name: flutter_sprites
 description: A sprite toolkit built on top of Flutter
-version: 0.0.9
+version: 0.0.10
 author: Flutter Authors <flutter-dev@googlegroups.com>
 homepage: http://flutter.io
 dependencies:
-  flutter: ">=0.0.12 <0.1.0"
-  sky_tools: ">=0.0.20 <0.1.0"
+  flutter: ">=0.0.13 <0.1.0"
   box2d: ">=0.2.0 <0.3.0"