Add getChatHistory and setChatHistory

Should this be in review? It looks good.

Having getter/setters for chatHistory makes sense to me. We could add docs @see-ing the functions, but the rest of the protected variables don't do this, so I'd say this is good to go either way.

Thanks prabha1997 & robloach, getting merged.

Automatically closed - issue fixed for 2 weeks with no activity.

unassigning