Tips for avoiding "async bloat" from Dion

https://tweedegolf.nl/en/blog/235/debloat-your-async-rust

* Avoid async fns that don't actually need to be async
* Use -> impl Future for async 'pass-through' functions (and return Future::ready())
* Use the futures crate to allow more async fns to be rewritten as a 'pass-through' function
* When possible, refactor code to share await points
* Pass references to large variables instead of moving them in

#rustlang #async