0.9.4

Beta release:

• Cloud Vision API v1.1 (#1693)

Fixes:

• Retry logic on HttpResponseException (#1677)
• PubSub: make subscriber connections split requests properly (#1675)
• Properly stop MessageDispatcher if Subscriber fails (#1665)
• Directory listing with leading slash (#1644)

Updates

• Update gapic clients with latest toolkit (http headers updated) (#1684)
• Make class com.google.cloud.ServiceOptions$Builder public (#1672)
• Add test for Publisher and Subscriber snippets (#1658)
• Expose static method to get default project ID (#1380)

Samples/docs

• PublisherClient/SubscriberClient snippets (#1663)
• PubSub: update README to use high perf clients (#1671)
• PubSub: fix typo in example (#1649)