This is an interim, but fairly major release. On the way to a 2.0 version.
Creates an asynchronous model of execution. Instead of sending one request to the server and waiting for a response, now sends multiple requests, and handles the responses as they are returned. Removes substantial periods of waiting for the server to generate a response. Also, sends many smaller requests, rather than batching many requests together.
Requires changes to both the client and server to ACK more requests.