title: Composer Autoload Multiple Files in Folder
body: <p>I'm using composer in my latest project and mapping my function like this</p>
  
  <pre><code>"require": {
      ...
  },
  "require-dev": {
      ...
  },
  "autoload": {
      "psr-4": {
          ...
      },
      "files": [
          "src/function/test-function.php"
      ]
  }
  </code></pre>
  
  <p>I imagine there will be a lot of files in a folder function, ex : real-function-1.php, real-function-2.php, etc. So, can composer call all the files in the folder function ? i lazy to use</p>
  
  <pre><code>"files": [
       "src/function/real-function-1.php",
       "src/function/real-function-2.php",
       ..,
       "src/function/real-function-100.php",
  ]
  </code></pre>
  
  <p>Is there any lazy like me...</p>