Bump analyzer version in preparation for publishing.

We need to publish a new version of analyzer so that analyzer_cli and
analysis_server can take advantage of support for DEP 34.

Also update changelog.

R=brianwilkerson@google.com

Review URL: https://codereview.chromium.org//1258343005 .
diff --git a/pkg/analyzer/CHANGELOG.md b/pkg/analyzer/CHANGELOG.md
index 3bb4bf7..3e7220c 100644
--- a/pkg/analyzer/CHANGELOG.md
+++ b/pkg/analyzer/CHANGELOG.md
@@ -1,3 +1,15 @@
+## 0.26.0-alpha.2
+
+* Fix highlight range for missing enum constant in switch (issue 23904).
+* Fix analyzer's treatment of `ClassName?.staticMember` to match spec.
+* Implement DEP 34 (less restricted mixins).
+* Fix some implementations of `UriResolver.resolveUri(..)` that did not
+  properly handle the new `actualUri` argument.
+
+## 0.26.0-alpha.1
+
+* Change `ResolutionCopier.visitAwaitExpression` to copy *Type fields.
+
 ## 0.26.0-alpha.0
 
 * API change: `UriResolver.resolveUri(..)` now takes an optional `actualUri`.
diff --git a/pkg/analyzer/pubspec.yaml b/pkg/analyzer/pubspec.yaml
index e6eb45c..c561052 100644
--- a/pkg/analyzer/pubspec.yaml
+++ b/pkg/analyzer/pubspec.yaml
@@ -1,5 +1,5 @@
 name: analyzer
-version: 0.26.0-alpha.1
+version: 0.26.0-alpha.2
 author: Dart Team <misc@dartlang.org>
 description: Static analyzer for Dart.
 homepage: http://www.dartlang.org