ng functionality:
<ul>

 <li> Add support now for fitting, in addition to the TH1 and TGraph
 also for TH2, TH3, TMultiGraph and TGraph2D and TTree (with un-binned
 fits)</li>

 <li>Add possibility to select the data object directly from the Fit
 panel. The Fit Panel can also be open directly from the TCanvas menu
 (under Tools)</li>

 <li>Improve the function selection by having the possibility to
 support user defined function, predefined functions and functions
 used before for fitting. </li>

 <li> Allo