Easy Rust 190: Static Mutexes

One big change in Rust 1.63 is that Mutex::new (and some others) are now const fn! That means you can wrap an empty String, Vec etc. inside one and now you have a global static that you can safely modify. See the release notes here: https://blog.rust-lang.org/2022/08/11... Want to buy me a coffee? Do it here: https://www.buymeacoffee.com/mithridates