Bump core module to (c) 2020

config/src/config.hh.in

core/doc/geometry.rst

core/doc/graph_minimizer.rst

core/doc/helper.rst

core/doc/index.rst

core/doc/pm3argparse.rst

core/doc/runtime_profiling.rst

core/doc/setcompoundschemlib.rst

core/init/__init__.py.in

core/pymod/__init__.py

core/pymod/export_geom.cc

core/pymod/export_graph_minimizer.cc

core/pymod/export_runtime_profiling.cc

core/pymod/helper.py

core/pymod/pm3argparse.py

core/pymod/wrap_core.cc

core/src/check_io.hh

core/src/cluster.cc

core/src/cluster.hh

core/src/dynamic_spatial_organizer.hh