Logger history

examples/Logger/SimpleOrbits/README

examples/Logger/SimpleOrbits/plotSolution.py

examples/Logger/SimpleOrbits/run.sh

logger/logger_tools.h

src/Makefile.am

src/cell_drift.c

src/dump.c

src/engine.c

src/engine_config.c

src/engine_io.c

src/engine_redistribute.c

src/engine_strays.c

src/gravity/MultiSoftening/gravity_part.h

src/hydro/Gadget2/hydro_logger.h

src/hydro_logger.h

src/logger.c

src/logger.h

src/logger_history.c

src/logger_history.h

src/logger_io.c