title: Merge multiple Sass maps
body: <p>I have three Sass maps that I want to merge into one map. With the map-merge function I can only merge two maps together. How can I merge more than two maps?</p>
  
  <p>A shortened example of my situation:</p>
  
  <pre><code>    $color-name: (
          blue: (
              default: blue,
              dark: navy,
              light: sky
          )
      );
  
      $color-event: (
          danger: (
              default: set($color-name, red),
              dark: set($color-name, red, dark),
              light: set($color-name, red, light),
          )
      );
  
      $color-category: (
          heading: (
              default: set($color-name, grey),
              dark: set($color-name, grey, dark),
              light: set($color-name, grey, light)
          )
      );
  
      $color: map-merge($color-name, $color-event, $color-category);
  </code></pre>