Release google-cloud-dlp 0.3.0 with updated documentation

Release google-cloud-bigquery 1.3.0

* Add insert_ids option to #insert in Dataset, Table, and AsyncInserter.
* Add BigQuery Project#service_account_email.
* Add support for setting Job location to nil in blocks for Job properties.

Release Pub/Sub 0.30.2

* Subscriber stability enhancements.
* Subscriber performance enhancements.

Release google-cloud-bigquery 1.2.0

* Add geo-regionalization (location) support to Jobs.
* Add Project#encryption support to Jobs.
* Rename Encryption to EncryptionConfiguration.
* Add blocks for setting Job properties to all Job creation methods.
* Add support for lists of URLs to #load and #load_job. (jeremywadsack)
* Fix Schema::Field type helpers.
* Fix Table#load example in README.

Release Spanner 1.4.0

* Add support for commit_timestamp.

Release google-cloud 0.51.1

Update documentation site.

Release google-cloud-dlp v0.2.0

Release Google Cloud 0.51.0

* Add BigQuery DataTransfer

Release BigQuery DataTransfer 0.1.0

* Initial release

Release Pub/Sub 0.30.1

* Fix Subscriber thread leak