Major refactoring and cleanup

src/style.rs

@@ -1,7 +1,8 @@
-use errors::*;
 use std::collections::HashSet;
 use std::str::FromStr;
 
+use errors::*;
+
 #[derive(Debug, Eq, PartialEq, Copy, Clone, Hash)]
 pub enum OutputComponent {
     Auto,