/**
  * Get the language of the project.
  *
  * @since 1.0.0
  *
  * @param bool|string $slug Optional Return just the slug or the language name?
  *
  * @return string The language name or slug.
  */
 public function language($slug = false)
 {
     if ($slug) {
         return $this->language;
     } else {
         return Dictionary::identify_language($this->language);
     }
 }