- release notes and versions

   Markus in release   ----------------- v00-12 -------

Needed to access cell dimensions in a segmentation agnostic way
Implemented unit tests for cellDimensions
Implemented default function throwing exception
Implemented cellDimensions for CartesianGridXY, XZ, YZ, XZY
Added c++11 definition to DD4hep.cmake (implemented functions with and without c++11)

Split libraries into DDCore and DDComponents.
One has to explicitely specify the required components in find_package.
See doc/release.notes for more details

   updated release.notes and ReadMe.txt for 
           release v00-11   
 ==========================================

     to handle pixel and strip detectors 
   - updated release notes

   - updated versions and release notes

   for release v00-08 and v00-09
   ( both have the wrong version number for the libraries 0.7 !)

Improved version of MC particle handler, fix calorimeter hit aggregation with multiple contributions

 - increased version number to v00-07

    - renamed namespace tgeo to dd4hep
       -> users need to replace tgeo::mm by dd4hep::mm

    to MaterialManager

  - improved utility print_materials to print material properties along  
    a straight line between two points including integrated radiation and 
    interaction lengths (useful for debugging geometries and materials)

  - use averaged material for Surfaces where the thickness extends
    beyond the volume

  - added release notes for material stuff

     - draw sensitive surfaces in red and helper surfaces in gray
     - protect against missing lcio input file
  - reduced printout from VolumeManager  (changed INFO to DEBUG)