message: Fix cli issue with negative inputs
diff: -use clap::clap_app;
  +use clap::{clap_app, AppSettings};
  use std::fs::File;
  fn main() {
  @@ -8,8 +8,8 @@ fn main() {
  (about: "An interpreter for Bril")
  (@arg profiling: -p "Flag to output the total number of dynamic instructions")
  (@arg FILE: -f --file +takes_value "The Bril file to run. stdin is assumed if FILE is not provided")
  - (@arg args: +allow_hyphen_values ... "Arguments for the main function")
  - )
  + (@arg args: ... "Arguments for the main function")
  + ).setting(AppSettings::AllowLeadingHyphen)
  .get_matches();
  let input_args = args.values_of("args").unwrap_or_default().collect();
  