HTTPS is now supported for callback and utterance_callback options. Setting the additional parameter insecure=true allows the callback to make "insecure" HTTPS connections, where successful certificate validation is not required.

The /sysinfo endpoint now provides WebAPI version information.

The default setting for maxconns is now maxstreams + 50 to provide more connection headroom on smaller instances. Additional control is now available for advanced configuration of available connections.

Text (output=text) results provided in zip files now have the .txt extension instead of .json.

Improved callback error logging.

Improved refresh operation against ASR engine restarts.

Added explicit package dependency for zip.