Prepare to release package:analyzer 0.31.0+1

Corrects SDK constraint

Change-Id: Ia6b48ee223760ceccac07e8c020d7398fd4b2f29
Reviewed-on: https://dart-review.googlesource.com/38360
Reviewed-by: Devon Carew <devoncarew@google.com>
diff --git a/pkg/analyzer/CHANGELOG.md b/pkg/analyzer/CHANGELOG.md
index 038def5..1cf5070 100644
--- a/pkg/analyzer/CHANGELOG.md
+++ b/pkg/analyzer/CHANGELOG.md
@@ -1,5 +1,12 @@
+## 0.31.0+1
+
+* Update SDK constraint to require Dart v2-dev release.
+
 ## 0.31.0
 
+* **NOTE** This release was pulled from the package site due to an invalid SDK
+  constraint that was fixed in `0.31.0+1`.
+
 * A number of updates, including support for the new Function syntax.
 
 ## 0.30.0-alpha.0
diff --git a/pkg/analyzer/pubspec.yaml b/pkg/analyzer/pubspec.yaml
index 57e686b..7c25bb8 100644
--- a/pkg/analyzer/pubspec.yaml
+++ b/pkg/analyzer/pubspec.yaml
@@ -1,10 +1,10 @@
 name: analyzer
-version: 0.31.0
+version: 0.31.0+1
 author: Dart Team <misc@dartlang.org>
 description: Static analyzer for Dart.
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer
 environment:
-  sdk: '>=1.20.0 <2.0.0'
+  sdk: '>=2.0.0-dev <2.0.0'
 dependencies:
   args: '>=0.12.1 <2.0.0'
   charcode: ^1.1.0