Rename example, update Rust edition

Cargo.toml

@@ -2,6 +2,7 @@
 name = "bevy_fmod"
 description = "Idiomatic FMOD in Bevy"
 authors = ["Fabian 'Salzian' Fritzsche <bevy_fmod@salzian.dev>"]
+edition = "2021"
 repository = "https://github.com/salzian/bevy_fmod"
 version = "0.2.0"
 license = "MIT OR Apache-2.0"
@@ -17,4 +18,4 @@ libfmod = "2.2.607"
 bevy = "0.11.2"
 
 [[example]]
-name = "hello_world"
+name = "minimal"

examples/hello_world.rs → examples/minimal.rs

@@ -1,6 +1,3 @@
-extern crate bevy;
-extern crate bevy_fmod;
-
 use bevy::prelude::EventWriter;
 use bevy::DefaultPlugins;
 use bevy::{app::App, prelude::Startup};

src/lib.rs

@@ -1,8 +1,3 @@
-extern crate anyhow;
-extern crate bevy;
-extern crate bevy_mod_sysfail;
-extern crate libfmod;
-
 mod play_sound_event;
 mod plugin;
 

src/plugin.rs

@@ -1,10 +1,10 @@
+use crate::PlaySoundEvent;
 use bevy::app::{App, Plugin};
 use bevy::log::{debug, trace};
 use bevy::prelude::{EventReader, NonSend, PostUpdate, Resource, Startup, Update, World};
 use bevy_mod_sysfail::sysfail;
 use libfmod::ffi::{FMOD_INIT_NORMAL, FMOD_STUDIO_INIT_NORMAL, FMOD_STUDIO_LOAD_BANK_NORMAL};
 use libfmod::{EventDescription, Studio};
-use play_sound_event::PlaySoundEvent;
 use std::env::var;
 use std::fs::{canonicalize, read_dir};
 use std::path::{Path, PathBuf};