For me the most interesting feature is the layout inspector feature shown at the end of the video. That’s what I miss when working on native applications compared to web applications. I guess other GUI libraries also have that, but I do not remember seeing it before.

I did the tiniest contribution to 5.0 clarifying in the API docs the memory buffer format (32-bit float array) for audio processors, because that was an issue in one of @tsoding.bsky.social ’s Raylib streams building his Musializer: www.youtube.com/watch?v=Xdbk...
github.com/tsoding/musi...

You might already know this, but if you add a selection step after the merging that’s called a “genetic algorithm”: pdfs.semanticscholar.org/515e/f260621... (that’s the Scientific American article from July 1992 where I first read about them)