Prepare v0.27.0

[dwsupplee]

Google Cloud PHP v0.27.0

Cloud Speech v0.3.0

• ❗ BREAKING CHANGE SpeechClient::recognize() and Operation::results() now return an array of Result items which allow you full access to the response from the upstream API. (Return all results and do not detect encoding/sample rate in the client #449)
• ❗ BREAKING CHANGE The client library no longer attempts to detect sample rate or encoding type. The upstream API has been improved significantly and can do this job for us. (Return all results and do not detect encoding/sample rate in the client #449)
• A language code is no longer required at the constructor level, but will be required at the request level if a default is not set. (Return all results and do not detect encoding/sample rate in the client #449)

Cloud Core v1.1.1

• A bug has been fixed in the StreamableUploader where the content-length header was being handled incorrectly. This issue was exposed by not using cURL as the HTTP transport.
  (Ensure the correct Content-Length header when streaming uploads #448)

[jdpedrie]

LGTM