li> Bug fixed in TF1 zooming on Y axis. To reproduce it do:
     <pre>
     root [0] TF1 f1( "f1", "-x", 1,3)
     root [1] f1.Draw()
     </pre>
     now selecting some range on the y-axis with the mouse
     jumped to the range (0, 1) instead of chosen range.
  </li>
  <li> Add in <tt>TF1::GetX</tt> and <tt>TF1::GetMaximum, TF1::GetMinimum</tt> and
  <tt>TF1::GetMaximumX, TF1::GetMinimumX</tt> the tolerance and max number
  of iterations as extra parameters with default values of
  tolerance=10E-10 and ma