r/> The existing class <tt>RooLinearMorph</tt> which
   implements 'Alex Read' morphing has been renamed <tt>RooIntegralMorph</tt>. A new class <tt>RooMomentMorph</tt>
   has been added (contribution from Max Baak and Stefan Gadatsch) that implements a different morphing algorithm 
   based on shifting the mean and variance of the input pdfs. The new moment morphing class can also interpolate 
   between multiple input templates and works with multi-dimensional input pdfs. One of the appealing features
   i