Release gcloud version 0.8.16 (#183)

Author: jonasfj

pkgs/gcloud/CHANGELOG.md

@@ -1,7 +1,7 @@
-## 0.8.16-wip
+## 0.8.16
 
- - **Breaking** `BucketEntry` is now `sealed` anyone implementing or subclassing
-   will experience breakage.
+ - `BucketEntry` is now `sealed` this may cause **breakage** for anyone
+   implementing `BucketEntry`.
  - Feature `BucketEntry` objects returns from `Bucket.list` are now instances
    of:
     * `BucketDirectoryEntry`, or,

pkgs/gcloud/pubspec.yaml

@@ -1,5 +1,5 @@
 name: gcloud
-version: 0.8.16-wip
+version: 0.8.16
 description: >-
   High level idiomatic Dart API for Google Cloud Storage, Pub-Sub and Datastore.
 repository: https://github.com/dart-lang/labs/tree/main/pkgs/gcloud