Features
- #9419
018c140- Start/stop recoding from the backend. Add guide on conversational chatbots. Thanks @freddyaboulton! - #9469
f7c3396- Fix. Triggered dataframe change event for header change. Thanks @Joodith! - #9426
4e54105- Refactoring playground. Thanks @whitphx! - #9462
b622b1f- Improve UI on the Playground. Thanks @aliabd!