Release google-cloud-error_reporting 0.32.1 (googleapis#4169)

* updated google-cloud-error_reporting/CHANGELOG.md [ci skip]

* updated google-cloud-error_reporting/lib/google/cloud/error_reporting/version.rb [ci skip]

Release google-cloud-pubsub 1.0.2 (googleapis#4175)

#### Bug Fixes

* Fix Subscriber state after releasing messages
  * Correctly reset the Subscriber state when releasing messages
    after the callback either raises an error, or the callback
    fails to call acknowledge or modify_ack_deadline on the
    message. If a Subscriber fills it's inventory, and stops
    pulling additional messages before all the callbacks are
    completed (moves to a paused state) then the Subscriber
    could become stuck in a paused state.
  * A paused Subscriber will now check whether to unpause after
    the callback is completed, instead of when acknowledge or
    modify_ack_deadline is called on the message.

Release google-cloud-spanner 1.11.0 (googleapis#4153)

BREAKING CHANGES (LOWER-LEVEL API ONLY)

* Make the session_count argument required in the lower-level API batch_create_sessions call

Performance Improvements

* Update Pool#init to use BatchCreateSessions
  * Update pool checkout to pop sessions for LIFO

Documentation

* Update Policy example code
* Update IAM Policy class description and sample code

Release google-cloud-container_analysis 0.3.2 (googleapis#4056)

Release google-cloud-vision 0.36.0 (googleapis#4059)

Release google-cloud-talent 0.6.0 (googleapis#4131)

Release google-cloud-speech 0.38.0 (googleapis#4003)

Release google-cloud-monitoring 0.32.0 (googleapis#4130)

Release google-cloud-logging 1.8.0 (googleapis#4126)

Release google-cloud-language 0.34.0 (googleapis#4129)