Feature : get watchlists

[YannickDot]

Hi Mathieu, thanks for this library it's so amazing

I was wondering if you could add the ability to get the symbols of the hotlists (volume gainers, percent change gainers) and of all the watchlists of the currently signed-in user.
I have a ton of watchlists in my account and I'd like to retrieve all of them and run a few scripts on them locally.

Thanks !