get rid of numerical recipes
Currently in our lib folder, we do have
mo_corr.f90 with modules calculating mainly autocorrelation metrics. Two procedures from therein are used in
mo_mrm_signatures.f90, which itself is not currently used in the code.
As there will be some restructuring again in order to get #22 done, the lib module will be a seperate repo and should not contain anything not licensed under GPL. So
mo_corr.f90, which is based on the Numerical Recipes and not free-to-use, needs to go. @lese called for a rewrite of the relevant function so we can keep
mo_mrm_signatures.f90 in the code. For now, I deleted that file in the new repository https://git.ufz.de/chs/lightweight_fortran_lib. Please add a new version of
mo_corr.f90 there and reinsert
mo_mrm_signatures.f90 in the branch for #22.