Hi,

1. Remote API Keys support, this feature can be used by external API
2. Custom arguments based on javascript variables existing in embedded page. No need to generate custom Live Helper Chat code. You just define what variable should check LHC
3. Avoid PHP Sessions concurrent conditions if Redis is used as PHP Sessions handler.
4. Various bot improvements. New Datatype

For update just follow standard update procedure For manual update it's update_185.sql