Use Rust 2018 Edition

Cargo.toml

@@ -2,6 +2,7 @@
 name = "webmetro"
 version = "0.2.0"
 authors = ["Tangent 128 <Tangent128@gmail.com>"]
+edition = "2018"
 
 [dependencies]
 bytes = "0.4.10"

src/commands/relay.rs

@@ -24,7 +24,8 @@ use hyper::{
 };
 use warp::{
     self,
-    Filter
+    Filter,
+    path
 };
 use weak_table::{
     WeakValueHashMap

src/lib.rs

@@ -1,9 +1,4 @@
 
-extern crate bytes;
-extern crate futures;
-extern crate odds;
-extern crate tokio;
-
 pub mod ebml;
 pub mod error;
 pub mod iterator;

src/main.rs

@@ -1,18 +1,7 @@
-extern crate bytes;
-#[macro_use] extern crate clap;
-extern crate futures;
-extern crate http;
-extern crate hyper;
-extern crate tokio;
-extern crate tokio_codec;
-extern crate tokio_io;
-#[macro_use] extern crate warp;
-extern crate weak_table;
-extern crate webmetro;
 
 mod commands;
 
-use clap::{App, AppSettings};
+use clap::{App, AppSettings, crate_version};
 
 use crate::commands::{
     relay,