title: ProGuard configuration for Guava with obfuscation and optimization
body: <p>Looking for a ProGuard configuration for Guava that will obfuscate and optimize, as the default one that is provided on the website does not. </p>
  
  <p>Not only that I cannot get it to export my apk, I keep getting:</p>
  
  <pre><code>Warning: com.google.common.collect.MinMaxPriorityQueue: 
      can't find referenced field 'int UNSET_EXPECTED_SIZE' in class  
      com.google.common.collect.MinMaxPriorityQueue$Builder
  You should check if you need to specify additional program jars.
  </code></pre>