message: allow relative paths for manifest-path
diff: @@ -27,7 +27,11 @@ pub(super) fn get_branch_cov(args: &ArgMatches) -> bool {
  pub(super) fn get_manifest(args: &ArgMatches) -> PathBuf {
  if let Some(path) = args.value_of("manifest-path") {
  - return PathBuf::from(path);
  + let path = PathBuf::from(path);
  + if path.is_relative() {
  + return env::current_dir().unwrap().join(path).canonicalize().unwrap();
  + }
  + return path;
  }
  let mut manifest = env::current_dir().unwrap();
  