Various other PRs remain to be merged before this may be.

Google Cloud PHP v0.37.0

Cloud BigQuery v0.2.3

• Fixed a potential PHP NOTICE error in the documentation snippets. (Updates documentation to use selfLink instead of friendlyName #619)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Core v1.8.1

• Fixed a bug in timestamp encoding for gRPC requests. (Fix timestamp formatting #650)

Cloud Datastore v1.0.1

• Updated the Datastore PHP Session Handler to prevent indexing of session data in Cloud Datastore. (Add options for entity calls in DatastoreSessionHandler #620)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud DLP v0.1.1

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)

Cloud Error Reporting v0.4.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)

Cloud Language v0.4.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Logging v1.3.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Monitoring v0.4.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)

Cloud Pub/Sub v0.6.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Spanner v0.5.0

• Cloud Spanner is now supported at a beta quality. This means that we believe it is nearly ready for use in production environments and will be maintained in a fashion complaint with our versioning constraints for Beta libraries.
• The Google Cloud PHP Cloud Spanner client now manages active sessions better, and will automatically downsize the pool in cases when it detects that fewer sessions are needed to serve the current application load. (Implement automatic downsizing of session pool #646)
• ❗ BREAKING CHANGE It is no longer possible to track the status of deleted sessions when downsizing or clearing the session pool. ([BC Break] Do not track failed session deletions #652)
• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Speech v0.6.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Storage v1.1.4

• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Trace v0.3.2

• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Translate v1.0.1

• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)

Cloud Video Intelligence v0.3.2

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)

Cloud Vision v0.4.1

• Refreshed GAPIC Clients. (Partial veneer GAPIC refresh #600)
• Added documentation for client constructor options. (adds RequestWrapperTrait options to applicable Client classes #617)