Support Brotli encoding
Akregator currently supports fetching feeds with on-the-fly gzip compression. It should support decompressing brotli-encoded feeds too.
On the user's end: unpaginated full-text feeds are often quite large, and users often have hundreds of feeds. On the feed provider's end, all Akregator clients may end up fetching a single Atom feed hundreds of times per day. Small savings add up fast.