1. Disabled operators departments relations will be stored in separate table. Performance improvement.
2. `Ignore message in Rest API` option in text message. Will avoid message being send inside `previous_visitor_messages_list_url` loop.
3. Option in chat configuration `Delete chat on close there there is no visitor messages in chat` usefull in case you are using auto chat start in start chat form settings.
4.  `sensitive`, `raw`, `sensitive_raw` prefixes support for `sensitive_{{args.item.msg}}` syntax inside `previous_visitor_messages_list_url` loop
5. Encrypted variables passing additional options https://doc.livehelperchat.com/docs/custom-fields-and-prefill#how-securely-pass-attributes
6. JS api to hide need help widget manually. https://doc.livehelperchat.com/docs/javascript-arguments#hide-need-help-widget
7. Update script to support migration queries.

For update just follow standard update procedure. For manual update it's update_328.sql