explicitly defined all functions in as either public or private in the modules to have a quick overview on all functions and parameters that are available
removed cut_off parameter for damask_spectral
removed outpot of derived divergence measures and added RMS output in brackets
added comments and options to the makefile
started to implement the nearest neighbor search for regridding
corrected calculation of divergence in real space.
corrected handling of maximum stress deviation (removed mask)