Merge branch 'master' into gravity_fixes

.gitignore

examples/analyse_dump_cells.py

examples/parameter_example.yml

examples/plot_task_dependencies.sh

examples/process_cells

examples/process_cells_helper

src/debug.c

src/debug.h

src/engine.c

src/equation_of_state.h

src/parallel_io.c

src/partition.c

src/partition.h

src/scheduler.c

src/scheduler.h

src/space.c