LGTM

Coverage remained the same at 100.0% when pulling b49a7c6 on tseaver:899-pubsub-subscription_pull_wo_receivedMessages into 6bc06ce on GoogleCloudPlatform:master.

I think this has been reintroduced. I'm seeing the following in version 0.13.0:

Exception in thread Thread-236:
Traceback (most recent call last):
File "C:\Python27\lib\threading.py", line 801, in __bootstrap_inner
self.run()
File ".\main.py", line 35, in run
worker_thread(self.thread_id)
File ".\main.py", line 161, in worker_thread
try:
File "C:\Python27\lib\site-packages\gcloud\pubsub\subscription.py", line 249, in pull
self.full_name, return_immediately, max_messages)
File "C:\Python27\lib\site-packages\gcloud\pubsub\connection.py", line 419, in subscription_pull
return response['receivedMessages']
KeyError: 'receivedMessages'

@dillona Thanks for the report! I've re-fixed it on master via dd38d66.

Hi, when are you going to release new version with this change?

We can cut a release this week. @tseaver WDYT?

Sure, no problem making a release soonish.

@tseaver It would be great that you will release in these few days. Thank you!

@tseaver @dhermes Are you going to release it today? Really need the fix in production