Reattach fitness to the build

We can build Fitness again now that playfair has been updated to account for
the package:flutter rename.

examples/BUILD.gn

@@ -7,7 +7,7 @@ group("examples") {
 
   deps = [
     "//examples/demo_launcher",
-    #"//examples/fitness",
+    "//examples/fitness",
     "//examples/game",
     "//examples/mine_digger",
     "//examples/rendering",

examples/address_book/pubspec.yaml

 name: address_book
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/demo_launcher/BUILD.gn

@@ -12,7 +12,7 @@ sky_app("demo_launcher") {
     apk_name = "SkyDemo"
 
     bundles = [
-      #"//examples/fitness",
+      "//examples/fitness",
       "//examples/game",
       "//examples/mine_digger",
       "//examples/rendering:interactive_flex",

examples/demo_launcher/pubspec.yaml

 name: demo_launcher
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/fitness/pubspec.yaml

 name: fitness
 dependencies:
-  flutter: any
-  sky_tools: any
-  playfair: ^0.0.9
+  flutter: ">=0.0.3 <0.1.0"
+  playfair: ^0.0.10
   path: ^1.3.6
+  sky_tools: any
 dependency_overrides:
   material_design_icons:
     path: ../../sky/packages/material_design_icons

examples/game/pubspec.yaml

 name: asteroids
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
   skysprites: any
   box2d: any

examples/hello_world/pubspec.yaml

 name: hello_world
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/mine_digger/pubspec.yaml

 name: mine_digger
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/raw/pubspec.yaml

 name: raw
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/rendering/pubspec.yaml

 name: rendering
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/stocks/pubspec.yaml

 name: stocks
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

examples/widgets/pubspec.yaml

 name: widgets
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

sky/packages/updater/pubspec.yaml

@@ -5,7 +5,7 @@ description: The autoupdater for flutter
 homepage: http://flutter.io
 dependencies:
   mojo: '>=0.2.0 <0.3.0'
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_services: any
   path: any
   yaml: any

sky/packages/workbench/pubspec.yaml

@@ -4,7 +4,7 @@ author: Flutter Authors <flutter-dev@googlegroups.com>
 description: A workspace to host pub packages
 homepage: https://github.com/flutter/engine/tree/master/sky/packages/workbench
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
 dependency_overrides:
   material_design_icons:

sky/unit/pubspec.yaml

 name: sky_unit_tests
 dependencies:
-  flutter: any
+  flutter: ">=0.0.3 <0.1.0"
   sky_tools: any
   test: any
   quiver: any

skysprites/pubspec.yaml

@@ -4,8 +4,8 @@ version: 0.0.1
 author: Flutter Authors <flutter-dev@googlegroups.com>
 homepage: http://flutter.io
 dependencies:
-  flutter: ">=0.0.36 < 0.1.0"
-  sky_tools: ">=0.0.10 < 0.1.0"
+  flutter: ">=0.0.3 <0.1.0"
+  sky_tools: ">=0.0.18 <0.1.0"
   box2d: any
 dependency_overrides:
   flutter: