Move InputFile to separate module

src/main.rs

@@ -24,6 +24,7 @@ mod clap_app;
 mod controller;
 mod decorations;
 mod diff;
+mod inputfile;
 mod line_range;
 mod output;
 mod preprocessor;
@@ -40,9 +41,10 @@ use std::process;
 use ansi_term::Colour::Green;
 use ansi_term::Style;
 
-use app::{App, Config, InputFile};
+use app::{App, Config};
 use assets::{clear_assets, config_dir, HighlightingAssets};
 use controller::Controller;
+use inputfile::InputFile;
 use style::{OutputComponent, OutputComponents};
 
 mod errors {