Update dependencies, remove unneeded keywords and declarations

Also declaration of a lazy_static element was moved in a better spot

src/lib.rs

@@ -12,12 +12,8 @@
 //! [original software](https://github.com/ceronyon/LangEvolve) which applies
 //! user-defined sound changes to words and texts based on regex expressions.
 
-#[macro_use]
-extern crate lazy_static;
-
 use std::fs::File;
-extern crate log;
-extern crate simplelog;
+
 use log::{info, warn};
 use simplelog::*;
 

src/settings/mod.rs

@@ -1,13 +1,11 @@
-extern crate serde;
-extern crate serde_json;
-extern crate serde_yaml;
 use serde::{Deserialize, Serialize};
 
-extern crate log;
 use log::{debug, error, info};
 
 use crate::utils::{self, SettingsType};
 
+use prettydiff::diff_words;
+
 mod rule;
 use rule::Rule;
 

src/settings/rule/mod.rs

@@ -1,13 +1,16 @@
 use std::collections::HashMap;
 
-extern crate serde;
-extern crate serde_json;
-extern crate serde_yaml;
 use serde::{Deserialize, Serialize};
 
+use lazy_static::lazy_static;
+
 mod regex_wrapper;
 use regex_wrapper::Regex;
 
+lazy_static! {
+    static ref RE : Regex = Regex::new("%([A-Z])");
+}
+
 /// Representation of a rule in LangEvolveRs
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct Rule {
@@ -34,9 +37,6 @@ impl Rule {
     }
 
     fn detect_categories(&self) -> (u8, u8) {
-        lazy_static! {
-            static ref RE : Regex = Regex::new("%([A-Z])");
-        }
         let captures_from = match RE.captures(self.from.as_str()) {
             None => 0 as u8,
             Some(c) => c.len() as u8,

src/utils/mod.rs

@@ -1,4 +1,3 @@
-extern crate log;
 use log::{info, error};
 
 use std::fs::File;