check that all the input correlation matrices are consistent (diagonals should be unity or zero; they should be symmetric unless one of the two off-diagonal halves is identically zero; if the diagonal is zero, one of the two off-diagonal halves should be identically zero)
add helper function to input correlation matrices with a vector containing only the elements of half of the matrix, taking advantage of the fact that it is symmetric
retab all files with four spaces per tab
minor modernisation of CMake, c++ and RooFit code to fix compilation warnings
Since the retab modifies nearly all files, changes are easier seen by looking at the single commits.
Add few improvements:
Since the retab modifies nearly all files, changes are easier seen by looking at the single commits.