Coding Matrix in Rust | 2023-10-16

This time: * We got past the confusion about `FmMut() -> Box<Pin<Future<Output=()>>` and got our code to compile! * Figuring out how to test our scheduled greeter plugin Next time: * Implementing the idea we had at the end of the plugin sending messages over a channel to the bot, and having the bot send the message instead of the plugin