v4.0.5 (2023-03-01)
NOTE:
- From this version we will prefix randomly generated device-specific distinct_ids with "$device:". The prefix is applied the next time a new random ID is generated, any IDs generated by previous SDK versions and persisted on the device will continue to be used as-is until reset is called to generate a new ID. This does not change the value sent for the $device_id property, which will continue to be the randomly-generated ID without a prefix. Mixpanel's $identify endpoint has been updated to accept UUIDs with this prefix to coordinate with this change.