Since the main functionality of the pubsub change consumer was completed, Google has added new functionality to the pub/sub client.

I would like to add the following to the Debezium Server pubsub change consumer:

Compress messages:
https://cloud.google.com/pubsub/docs/compress-messages

Concurrency control:
https://cloud.google.com/pubsub/docs/concurrency-control-messages

I am currently working on a pull request for this if no one else is working on something similar