Features:

1. Site identifier in code generation. It can be used to have different invite messages for different domains etc.
   1. https://github.com/remdex/livehelperchat/issues/73
2. Option to turn of online users tracking but completely remove pro active chats invitations table scan and save a little bit of performance.

Enhancements:

1. Template cache by port.
   1. https://github.com/remdex/livehelperchat/issues/66
2. Simpler permission access generation.
   1. https://github.com/remdex/livehelperchat/issues/62

Bugfixes:
1. User who did not had permission to close chat was able to do that because of typo error. It's fixed now.

execute doc/update_db/update_28.sql and follow standard upgrade instructions

Additional notices

If you executed database update please check that you have enabled pro active chat messages invitations like from now it's configurable option. Also read updated documentation to find out how to use identifier

Demo also was updated. Play around with it :)