title: After upgrading specs2 to 2.10 matcher 'haveTheSameElementsAs' seems lost
body: <p>Recently I have upgraded my specs2 to 2.10-2.3.11 and apparently after that compiler can't recognize matcher <code>must haveTheSameElementsAs</code>. I couldn't find where they moved it or similar matcher in specs2. Any idea where is it/ what I should use instead of that one?</p>