split code between lib and bin

Author: danieledapo

src/colormap.rs

@@ -1,5 +1,4 @@
-use crate::map::RegionId;
-use crate::Map;
+use crate::map::{Map, RegionId};
 
 #[derive(Clone, Debug, PartialEq, Eq)]
 pub struct ColorMap {

src/lib.rs

@@ -0,0 +1,2 @@
+pub mod colormap;
+pub mod map;

src/main.rs

@@ -1,6 +1,3 @@
-mod colormap;
-mod map;
-
 use std::fs;
 use std::io;
 use std::io::Write;
@@ -10,8 +7,8 @@ use colored::Colorize;
 use rand::prelude::*;
 use structopt::StructOpt;
 
-use crate::colormap::*;
-use crate::map::Map;
+use map_4col::colormap::{Color, ColorMap};
+use map_4col::map::Map;
 
 /// Simple program to generate maps colored following the 4 color theorem.
 #[derive(Debug, StructOpt)]