Decided to release new version with few nice enhancements. Here is changelog

1. Fixed bug then department online hours was not taking effect if department ID was not provided.
   https://github.com/LiveHelperChat/livehelperchat/issues/491
2. Option to setup status indication is site visitor still on site or already left a site
   https://github.com/LiveHelperChat/livehelperchat/issues/490
   
   In this scenario it means - check is user still on site and check operators status every 120 s. If you uncheck first checkbox only check regarding is operators still available every two minits.
3. Option to export chats as XLS, you will find XLS button in chat listing windows.
   https://github.com/LiveHelperChat/livehelperchat/issues/435
4. Option to write manually for what domain user is generating embed code. This is neede if you are experiencing some issue like chat is not kept while navigating through other site pages.
   
   I always recommend to fill this field while generating embed code. Old embed codes also will work in any case.
   https://github.com/LiveHelperChat/livehelperchat/issues/489
5. Extra modules will be hidden if user does not have permission to use atleast one of submodule.
   https://github.com/LiveHelperChat/livehelperchat/issues/487
6. If user refreshed page message time was incorrect because user time zone was not used. It was used only for new user messages.
7. Few more API calls is available now. This part needs article for explain how to use it in extensions.

For update just follow standard update procedure. For manual update it's update_90.sql