Update args to 0.13.0.

standalone.deps/DEPS

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 vars = {
   # Use this googlecode_url variable only if there is an internal mirror for it.
   # If you do not know, use the full path while defining your new deps entry.
   "googlecode_url": "http://%s.googlecode.com/svn",
   "dart_branch": "/branches/bleeding_edge",
 
   "gyp_rev": "@1752",
   "co19_rev": "@801",
   "chromium_git": "https://chromium.googlesource.com",
 
   # Revisions of /third_party/* dependencies.
-  "args_rev" : "@2699ca11b09158ab23ff4cb464ab255e89cc2f27",
+  "args_tag": "@0.13.0",
   "barback_rev" : "@29ee90dbcf77cfd64632fa2797a4c8a4f29a4b51",
   "collection_rev": "@1da9a07f32efa2ba0c391b289e2037391e31da0e",
   "crypto_rev" : "@2df57a1e26dd88e8d0614207d4b062c73209917d",
   "fake_async_rev": "@38614",
   "glob_rev": "@704cf75e4f26b417505c5c611bdaacd8808467dd",
   "http_rev" : "@9b93e1542c753090c50b46ef1592d44bc858bfe7",
   "http_multi_server_tag" : "@1.3.2",
   "http_parser_rev" : "@8b179e36aba985208e4c5fb15cfddd386b6370a4",
   "http_throttle_rev" : "@a81f08be942cdd608883c7b67795c12226abc235",
   "json_rpc_2_rev": "@a38eefd116d910199de205f962af92fed87c164c",
@@ skipping 95 matching lines @@
       "https://github.com/dart-lang/string_scanner.git" +
       Var("string_scanner_rev"),
   "dart/third_party/pkg/watcher":
       "https://github.com/dart-lang/watcher.git" + Var("watcher_tag"),
   "dart/third_party/pkg/yaml":
       "https://github.com/dart-lang/yaml.git" + Var("yaml_rev"),
 
   # Stuff needed to run tests.
   # External packages.
   "dart/third_party/pkg/args":
-      "https://github.com/dart-lang/args.git" + Var("args_rev"),
+      "https://github.com/dart-lang/args.git" + Var("args_tag"),
   "dart/third_party/pkg/fake_async":
       "/third_party/fake_async" + Var("fake_async_rev"),
   "dart/third_party/pkg/logging":
       "https://github.com/dart-lang/logging.git" + Var("logging_rev"),
   "dart/third_party/pkg/matcher":
       "https://github.com/dart-lang/matcher.git" + Var("matcher_tag"),
   "dart/third_party/pkg/observe":
       "https://github.com/dart-lang/observe.git" + Var("observe_rev"),
   "dart/third_party/pkg/path":
       "https://github.com/dart-lang/path.git" + Var("path_rev"),
@@ skipping 16 matching lines @@
       "@c89e446b273697fadf3a10ff1007a97c0b7de6df",
   },
 }
 
 hooks = [
   {
     "pattern": ".",
     "action": ["python", "dart/tools/gyp_dart.py", "runtime"],
   },
 ]