How do I put things on wishlist and how to view fullscreen?

From the recent roadmap update:

Not sure, why there’s a need to limit the wishlist, but happy that there’s something coming.

and

Don’t see the maximize button so far, but pressing “F” indeed works already. Thanks! So far it’s just the resolution of the image from the store page scaled up, but that’s better than no full-screen at all.

Here’s the full roadmap update: