Update dart:collection to version 1.0.0

R=sgjesse@google.com

Review URL: https://codereview.chromium.org//463333004

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/yaml@39484 260f80e4-7a28-3924-810f-c04153c831b5

pkgs/yaml/pubspec.yaml

diff --git a/pkgs/yaml/pubspec.yaml b/pkgs/yaml/pubspec.yaml
index afb8a0e..5362b60 100644
--- a/pkgs/yaml/pubspec.yaml
+++ b/pkgs/yaml/pubspec.yaml
@@ -4,7 +4,7 @@
 homepage: http://www.dartlang.org
 description: A parser for YAML.
 dependencies:
-  collection: ">=0.9.2 <0.10.0"
+  collection: ">=0.9.2 <2.0.0"
   path: ">=1.2.0 <2.0.0"
   string_scanner: ">=0.1.0 <0.2.0"
   source_span: ">=1.0.0 <2.0.0"