title: Modifying GWT's user.agent when releasing
body: <p>When developing, I set the <code>user.agent</code> property to a single value, to keep compile times down. When releasing, I have a WAR file built for all user agents.</p>
  
  <p>I unfortunately seem to keep forgetting to switch the property, either:</p>
  
  <ul>
  <li>wasting development time waiting for compiles, or</li>
  <li>preparing a WAR file with incomplete browser support ( not yet deployed , thankfully ).</li>
  </ul>
  
  <p>I want to automate this, preferably using the maven-release-plugin. </p>