Implement Display for all commands

src/main.rs

@@ -4,6 +4,7 @@ use std::path::PathBuf;
 use structopt::StructOpt;
 
 mod commands;
+mod format;
 mod parse;
 
 #[derive(Debug, StructOpt)]
@@ -16,6 +17,6 @@ fn main() -> anyhow::Result<()> {
     let opt = Opt::from_args();
     let content = fs::read_to_string(&opt.file)?;
     let file = parse::parse(&opt.file, &content)?;
-    println!("{:#?}", file);
+    print!("{}", file);
     Ok(())
 }