Actually release source_maps 0.10.0.

BUG=19930
R=sigmund@google.com

Review URL: https://codereview.chromium.org//430343002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@38813 260f80e4-7a28-3924-810f-c04153c831b5

pkg/source_maps/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.10.0
+
+* Remove the `Span`, `Location` and `SourceFile` classes. Use the
+  corresponding `source_span` classes instead.
+
 ## 0.9.4
 
 * Update `SpanFormatException` with `source` and `offset`.

pkg/source_maps/pubspec.yaml

@@ -1,13 +1,5 @@
 name: source_maps
-
-# Note! This version number is referenced directly in the pub source code in
-# lib/src/barback.dart. Pub implicitly places a version constraint on
-# source_maps to ensure users only select a version of source_maps that works
-# with their current version of pub.
-#
-# When the minor version is upgraded, you *must* update that version constraint
-# in pub to stay in sync with this.
-version: 0.9.4-dev
+version: 0.10.0
 author: Dart Team <misc@dartlang.org>
 description: Library to programmatically manipulate source map files.
 homepage: http://www.dartlang.org