title: Include aar into aar
body: <p>I have an android library distributed in aar format. It weight 300kb. 
  I want to create another library and also in aar format, where first library in dependencies. 
  But result library weight is 30kb, so obviously it does not not include first library.</p>
  
  <p>I tried to add first library using <code>flatDir</code>:</p>
  
  <pre><code>repositories {
      flatDir {
          dirs 'libs'
      }
  }
  dependencies {
      compile(name:'mylib-1.0', ext:'aar')
  }
  </code></pre>
  
  <p>And publish to mavenLocal using <code>maven-publish</code>:</p>
  
  <pre><code>repositories {
      mavenLocal()
  }
  dependencies {
      compile 'com.mylib:mylib:1.0.0@aar'
  }
  </code></pre>
  
  <p>but still it does not include to result aar.</p>
  
  <p>How to include my first aar to result aar?  </p>