message: next: version.hpp
diff: #ifndef OPENCV_VERSION_HPP
  #define OPENCV_VERSION_HPP
  -#define CV_VERSION_MAJOR 3
  -#define CV_VERSION_MINOR 4
  -#define CV_VERSION_REVISION 1
  -#define CV_VERSION_STATUS "-dev"
  +#define CV_VERSION_MAJOR 4
  +#define CV_VERSION_MINOR 0
  +#define CV_VERSION_REVISION 0
  +#define CV_VERSION_STATUS "-pre"
  #define CVAUX_STR_EXP(__A) #__A
  #define CVAUX_STR(__A) CVAUX_STR_EXP(__A)
  