google-cloud-pubsub 0.28.4

Bugfixes

• Fix a bug with debug logging causing unintentional blocking behavior (#4174, h/t @jeffkpayne)
• Fix a bug where explicitly-provided queues were ignored (#3924, h/t @garykrige)

Dependencies

• Remove of grpcio as an explicit dependency; now a transitive dependency of google-gax only (#4098)

Documentation

• Update gcloud-common nomenclature to google-cloud-common (#4180)