@sweetp Thanks so much!
I have bought the app. Great job.

OK well it would be awesome. Sorry for underestimating the difficulty.

So did anything happen about this? Since you already support Opera, adding support for next/beta seems like a very small feature to add, simply a matter of changing a couple of strings (unless I'm mistaken) but this request was 4 years ago and I can confirm it is not working as of 11th Feb 2021.
Shame as I use both extensively, they are in fact very stable.