rev to 4.0.0; prep to publish (dart-lang/lints#184)

pkgs/lints/CHANGELOG.md

diff --git a/pkgs/lints/CHANGELOG.md b/pkgs/lints/CHANGELOG.md
index ec395c5..5950671 100644
--- a/pkgs/lints/CHANGELOG.md
+++ b/pkgs/lints/CHANGELOG.md
@@ -1,4 +1,4 @@
-## 4.0.0-wip
+## 4.0.0
 
 - `core`:
   - added `library_annotations` (https://github.com/dart-lang/lints/issues/177)

pkgs/lints/pubspec.yaml

diff --git a/pkgs/lints/pubspec.yaml b/pkgs/lints/pubspec.yaml
index 6c02d5b..66f7a8a 100644
--- a/pkgs/lints/pubspec.yaml
+++ b/pkgs/lints/pubspec.yaml
@@ -1,5 +1,5 @@
 name: lints
-version: 4.0.0-wip
+version: 4.0.0
 description: >
   Official Dart lint rules. Defines the 'core' and 'recommended' set of lints
   suggested by the Dart team.