Use source_span rather than source_maps in csslib.

This will release csslib 0.11.0 and html5lib 0.11.0+2.

BUG=19930
R=sigmund@google.com

Review URL: https://codereview.chromium.org//426053003

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/third_party/html5lib@38716 260f80e4-7a28-3924-810f-c04153c831b5
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c7ebb0..1c70042 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@
 This file contains highlights of what changes on each version of the html5lib
 package.
 
+#### Pub version 0.11.0+2
+  * expand the version constraint for csslib.
+
 #### Pub version 0.10.0+1
   * use a more recent source_maps version.
 
diff --git a/pubspec.yaml b/pubspec.yaml
index e4a2d9a..086cb08 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,12 +1,12 @@
 name: html5lib
-version: 0.11.0+1
+version: 0.11.0+2
 author: Dart Team <misc@dartlang.org>
 description: A library for working with HTML documents.
 homepage: http://pub.dartlang.org/packages/html5lib
 environment:
   sdk: '>=1.2.0 <2.0.0'
 dependencies:
-  csslib: '>=0.10.0 <0.11.0'
+  csslib: '>=0.10.0 <0.12.0'
   source_maps: '>=0.9.1 <0.10.0'
   utf: '>=0.9.0 <0.10.0'
 dev_dependencies: