Prepare to publish 0.10.6 (#29)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9a0879c..d8ee77a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.10.6
+
+* Require version 2.0.0 of the Dart SDK.
+
 ## 0.10.5
 
 * Add a `SingleMapping.files` field which provides access to `SourceFile`s
@@ -9,7 +13,6 @@
 ## 0.10.4
 * Implement `highlight` in `SourceMapFileSpan`.
 * Require version `^1.3.0` of `source_span`.
-* Require version 2.0.0 of the Dart SDK.
 
 ## 0.10.3
  * Add `addMapping` and `containsMapping` members to `MappingBundle`.
diff --git a/pubspec.yaml b/pubspec.yaml
index 8598aef..2c70f6b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: source_maps
-version: 0.10.5
+version: 0.10.6
 author: Dart Team <misc@dartlang.org>
 description: Library to programmatically manipulate source map files.
 homepage: http://github.com/dart-lang/source_maps