title: Suppress return types in sbt console / Scala REPL
body: <p>I remember there is switch somewhere to suppress the printing of return types in the Scala REPL, but I cannot find it. I am particularly interested in adding this switch to an sbt build file. Something like <code>returnTypes in console := false</code>.</p>
  
  <p>E.g. now I have</p>
  
  <pre><code>scala&gt; within( Span( 0, 33 ))
  res7: scala.collection.immutable.IndexedSeq[(de.sciss.lucre.expr.SpanLike, scala.collection.immutable.IndexedSeq[(de.sciss.lucre.expr.Expr[de.sciss.lucre.stm.InMemory,de.sciss.lucre.expr.SpanLike], de.sciss.lucre.expr.Expr[de.sciss.lucre.stm.InMemory,Long])])] = Vector()
  </code></pre>
  
  <p>and for obvious reasons I want</p>
  
  <pre><code>scala&gt; within( Span( 0, 33 ))
  res7: Vector()
  </code></pre>