- Fixing bug in particle and gamma dicay causing seg fault when leaving the program
 - fixing bug in NP function caussing 2Dgaussian to be stuck for sigmaX=sigmaY=0 case

   + changes in all *.reaction event generator files were performed
   + update ReleaseNotes.txt file

* NPLib/Makefile
   + when make distclean, now remove NPToolLogon_C* files in scrips directory

  + the index of maps now include the detector number

   - case for TInitialConditions, TInteractionCoordinates, 
     TGaspardTrackerData and TPlasticData
   - one method was added:    void Clear(const Option_t*) {};
   - one method was modified: void Dump() const;

   - Take into account energy loss in the target for reconstruction
     of the excitation energy
   - change makefile to recompile when header files are changed

* Clean some part of the code to remove warnings at compilation time

   - This is useful for elastic scattering studies

* Add CH2 material for target definition

  directly from the namespace of each class.

* Documentation file (empty for the moment) for the Gaspard project is 
  added

* Rename Gaspard geometry input files

* Add one differential cross section file

* Fill all fields of the TInitialCondition class for an isotropic event
  generator

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  are in sigma and not in FWHM

   - Change path in PrimaryGeneratorAction.cc
   - Update HOWTO / README files

   - add the two files GaspardTrackerDummyShape.{h,cxx}
   - modify the necessary files for the GaspardTracker to work with this
     new shape.

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