wrym

fix(transport): unify send_to to return `Result` and handle errors;

refactor: unify `Transport` trait with `Reliability` for all transports

refactor(transport): add poll() and optional channel for reliable sends

feat(ids): generate unique identifiers per client & handle events by `u32` ids instead of `String` addrs

chore(cargo): update package metadata for crates.io release and remove