message: addslash and extensions are mutually exclusive
diff: @@ -154,6 +154,7 @@ pub fn initialize() -> App<'static, 'static> {
  .short("f")
  .long("addslash")
  .takes_value(false)
  + .conflicts_with("extensions")
  .help("Append / to each request")
  )
  .arg(
  