Release Pub/Sub 0.30.1

* Fix Subscriber thread leak

Release Stackdriver 0.14.0

* Debugger 0.31.0
  * Use Google Cloud Shared Configuration.
  * Fix for mutation detection using Ruby 2.5.
  * Support disabling mutation detection in debugger evaluation.
* Error Reporting 0.30.0
  * Use Google Cloud Shared Configuration.
* Logging 1.5.0
  * Use Google Cloud Shared Configuration.
  * Deprecated Logging Sink attributes.
* Trace 0.31.0
  * Use Google Cloud Shared Configuration.
  * Update authentication documentation.

Release Vision 0.28.0

* Add Shared Configuration.

Release Translate 1.2.0

* Support Shared Configuration.

Release Trace 0.31.0

* Use Google Cloud Shared Configuration.
* Update authentication documentation.

Release Storage 1.10.0

* Support Shared Configuration.
* Fix verification for gzipped files.
  * Add skip_decompress to File#download
  * Update documentation and examples for gzip-encoded files.
* Fix issue with IAM Policy not refreshing properly.
* Update Google API Client dependency.
* Update authentication documentation

Release Speech 0.29.0

* Support Shared Configuration.

Release Resource Manager 0.29.0

* Support Shared Configuration.
* Fix issue with IAM Policy not refreshing properly.
* Update Google API Client dependency.

Release Pub/Sub 0.30.0

* Support Shared Configuration.
* Fix issue with IAM Policy not refreshing properly.

Release Logging 1.5.0

* Use Google Cloud Shared Configuration.
* Deprecated Logging Sink attributes.