Update jsonexample (#72)

- use latest dependencies
- update build.yaml for removed option
- rebuilt generated code

jsonexample/pubspec.lock

@@ -7,14 +7,14 @@ packages:
       name: analyzer
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.33.6+1"
+    version: "0.35.4"
   analyzer_plugin:
     dependency: transitive
     description:
       name: analyzer_plugin
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1-alpha.5"
+    version: "0.0.1-alpha.7"
   args:
     dependency: transitive
     description:
@@ -42,42 +42,42 @@ packages:
       name: build
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.1.4"
   build_config:
     dependency: transitive
     description:
       name: build_config
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.1+4"
+    version: "0.3.2"
   build_daemon:
     dependency: transitive
     description:
       name: build_daemon
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.3"
+    version: "0.5.0"
   build_resolvers:
     dependency: transitive
     description:
       name: build_resolvers
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.3"
+    version: "1.0.4"
   build_runner:
     dependency: "direct dev"
     description:
       name: build_runner
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.3"
+    version: "1.3.3"
   build_runner_core:
     dependency: transitive
     description:
       name: build_runner_core
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.1"
+    version: "3.0.3"
   built_collection:
     dependency: "direct main"
     description:
@@ -91,14 +91,14 @@ packages:
       name: built_value
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.3.2"
+    version: "6.4.0"
   built_value_generator:
     dependency: "direct dev"
     description:
       name: built_value_generator
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "6.3.2"
+    version: "6.4.0"
   charcode:
     dependency: transitive
     description:
@@ -140,14 +140,14 @@ packages:
       name: csslib
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.14.6"
+    version: "0.15.0"
   dart_style:
     dependency: transitive
     description:
       name: dart_style
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "1.2.4"
   fixnum:
     dependency: transitive
     description:
@@ -171,7 +171,7 @@ packages:
       name: front_end
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.6+9"
+    version: "0.1.14"
   glob:
     dependency: transitive
     description:
@@ -192,7 +192,7 @@ packages:
       name: html
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.13.4+1"
+    version: "0.13.4+2"
   http:
     dependency: transitive
     description:
@@ -206,7 +206,7 @@ packages:
       name: http_multi_server
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.5"
+    version: "2.0.6"
   http_parser:
     dependency: transitive
     description:
@@ -234,21 +234,21 @@ packages:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.0"
+    version: "2.2.0"
   json_serializable:
     dependency: "direct dev"
     description:
       name: json_serializable
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.5.1"
+    version: "2.2.1"
   kernel:
     dependency: transitive
     description:
       name: kernel
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.6+9"
+    version: "0.3.14"
   logging:
     dependency: transitive
     description:
@@ -305,13 +305,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.4.0"
-  plugin:
-    dependency: transitive
-    description:
-      name: plugin
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.2.0+3"
   pool:
     dependency: transitive
     description:
@@ -353,7 +346,7 @@ packages:
       name: shelf_web_socket
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.2+5"
+    version: "0.2.3"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -365,7 +358,7 @@ packages:
       name: source_gen
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.4+1"
+    version: "0.9.4+2"
   source_span:
     dependency: transitive
     description:
@@ -465,4 +458,4 @@ packages:
     source: hosted
     version: "2.1.15"
 sdks:
-  dart: ">=2.1.0 <3.0.0"
+  dart: ">=2.1.1 <3.0.0"