message: Use sets to compare package.json files content
  Order doesn't matter!
diff: @@ -6,6 +6,7 @@ extern crate wasm_pack;
  mod utils;
  +use std::collections::HashSet;
  use std::fs;
  use wasm_pack::manifest;
  @@ -59,10 +60,17 @@ fn it_creates_a_package_json_default_path() {
  pkg.repository.url,
  "https://github.com/ashleygwilliams/wasm-pack.git"
  );
  - assert_eq!(pkg.files, ["wasm_pack_bg.wasm", "wasm_pack_bg.js", "wasm_pack.d.ts"]);
  assert_eq!(pkg.main, "wasm_pack.js");
  let types = pkg.types.unwrap_or_default();
  assert_eq!(types, "wasm_pack.d.ts");
  +
  + let actual_files: HashSet<String> = pkg.files.into_iter().collect();
  + let expected_files: HashSet<String> = ["wasm_pack_bg.wasm", "wasm_pack_bg.js", "wasm_pack.d.ts"]
  + .iter()
  + .map(|&s| String::from(s))
  + .collect();
  + assert_eq!(actual_files, expected_files);
  +
  }
  #[test]
  