title: Error:Build-in class shrinker and multidex are not supported yet
body: <p>After adding <code>useProguard  true</code> and <code>multidexEnabled true</code> to my built types this error comes up when trying to build:</p>
  
  <blockquote>
    <p>Error:Build-in class shrinker and multidex are not supported yet.</p>
  </blockquote>
  
  <pre><code>compileSdkVersion 23
  buildToolsVersion '23.0.2'
  defaultConfig {
      applicationId "com.example.android
      minSdkVersion 16
      targetSdkVersion 23
      versionCode gitVersionCode()
      versionName gitVersionName()
      multiDexEnabled true
  }
  </code></pre>
  
  <p></p>
  
  <pre><code>buildTypes {
      debug {
          ...
          useProguard false
          debuggable true
      }
      release {
          ...
          useProguard true
      }
  </code></pre>
  
  <p>Running Android Studio 2.0 Beta 5.</p>
  
  <p>Any solution besides removing multidex?</p>