psm features tested OK

src/pappsomspp/peptide/peptidenaturalisotopeaverage.cpp

src/pappsomspp/peptide/peptidenaturalisotopeaverage.h

src/pappsomspp/psm/features/psmfeatures.cpp

src/pappsomspp/psm/peakionisotopematch.cpp

src/pappsomspp/psm/peakionisotopematch.h

src/pappsomspp/psm/peakionmatch.cpp

src/pappsomspp/psm/peakionmatch.h

src/pappsomspp/psm/peptideisotopespectrummatch.cpp

src/pappsomspp/psm/peptideisotopespectrummatch.h

tests/test_psm.cpp