title: Sbt : multi task ordering
body: <p>I want to make tasks dependent on each other in sbt. I want task <code>task2</code> to execute before <code>task3</code>.
  Here's my code :</p>
  <pre><code>Task1.dependsOn(task3)
  Task3.dependsOn(task2)
  </code></pre>
  <p><code>task2</code> executes before <code>task3</code> and then <code>task1</code> is executed.
  Now If I use this:</p>
  <pre><code>Task1.dependsOn(task2, task3)
  </code></pre>
  <p>Does sbt preserve order of tasks? So that execution order is 2 3 1 ?</p>