Parses rel=alternate links to RSS feeds.
$ cargo run bors.tech
Finished dev [unoptimized + debuginfo] target(s) in 0.05s
Running `target/debug/find-rss 'https://bors.tech'`
https://bors.tech/feed.xml
This was basically built by gutting ammonia and a half-hour of work. It is excessively complex because I didn't take the time to really simplify it.