tidy up code

src/key/key_map.rs

@@ -11,6 +11,7 @@ use std::fs::{File};
 use std::io::Read;
 use std::path::Path;
 use globset::Glob;
+use serde_derive::Deserialize;
 use toml;
 
 #[derive(Debug)]

src/main.rs

@@ -1,19 +1,3 @@
-extern crate openssl;
-extern crate toml;
-#[macro_use]
-extern crate serde_derive;
-extern crate clap;
-extern crate regex;
-#[macro_use]
-extern crate byteorder;
-extern crate anyhow;
-extern crate dirs;
-extern crate globset;
-extern crate self_update;
-
-#[cfg(test)]
-extern crate serial_test;
-
 use anyhow::{anyhow, format_err, Context, Error};
 
 use clap::{Arg};