DDCore and other packages now depend on DDSegmentation
Segmentation from DDCore now holds a DDSegmentation object that is created during XML parsing
Readout interface extended to act like a full IDDecoder combining information from the volume manage and the DDSegmentation object
TODO: Segmentation could be removed completely, if Readout simply holds a DDSegmentation object
TODO: Missing DDSegmentation classes for cylinders

   the standard Sds that come with it
   -> see SDWrapper.cc
   (exampleN04 now works)

    object to instantiate a G4VSensitiveDetector 
    class
    ->  allows to use pre-existing SD classes 
    -> changed macro DECLARE_SENSITIVEDETECTOR to
       create a factory, thus replace:
       //    typedef Geant4GenericSD<TrackerCombine>  Geant4TrackerCombine;
       typedef SimpleG4SDFactory< Geant4GenericSD<TrackerCombine> >  Geant4TrackerCombine;

   classes related to rotations (RoatationZYX etc)

 - document drawingStyle 

   (work in progress see README/Issues.txt)

For now completely decoupled from DDCore only uses BitField64 from there.
Part of the code should replace the Geometry::Segmentation classes

Added calorimeter reco interface using extensions

Add root libs to (DY)LD_LIBRARY_PATH, make cmake find genmap. No longer need to have rootsys/bin in the path.

   MacOS 
     -> requires all dynamic libraries to be on the search path ...

Make location of MakeRootMap.cmake to DD4hep_ROOT if it exists. In that case DD4hep is an external library. Now examples can be compiled against it.