flutter pub upgrade (#178)

veggieseasons/pubspec.lock

@@ -63,7 +63,7 @@ packages:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.1.3"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -81,6 +81,11 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutter_web_plugins:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.0"
   font_awesome_flutter:
     dependency: "direct main"
     description:
@@ -157,7 +162,28 @@ packages:
       name: shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.5.4+5"
+    version: "0.5.6"
+  shared_preferences_macos:
+    dependency: transitive
+    description:
+      name: shared_preferences_macos
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.0.1+3"
+  shared_preferences_platform_interface:
+    dependency: transitive
+    description:
+      name: shared_preferences_platform_interface
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.1"
+  shared_preferences_web:
+    dependency: transitive
+    description:
+      name: shared_preferences_web
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "0.1.2+2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -235,4 +261,4 @@ packages:
     version: "2.2.0"
 sdks:
   dart: ">=2.5.0 <3.0.0"
-  flutter: ">=1.6.7 <2.0.0"
+  flutter: ">=1.12.13+hotfix.4 <2.0.0"