li>The Minos algorithm of Minuit is used now to find the limit of the likelihood intervals instead of searching directly the roots of the RooProfileLL class. Minos is used via the <tt>ROOT::Math::Minimizer</tt> interface. By default TMinuit is used, one can also use Minuit2 by doing <tt>ROOT::Math::MinimizerOptions::SetDefaultMinimizer("Minuit2")</tt>.</li>
  <li>The <tt>LikelihoodInterval</tt> class now provides now two new methods, <tt>FindLimits</tt> which finds both the upper and lower interval bounds, 