Update dependencies, remove unneeded keywords and declarations

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

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;