Merge branch 'mpi_stars2_matthieu' into 'master'

.gitignore

doc/Doxyfile.in

examples/EAGLE_low_z/EAGLE_12/eagle_12.yml

examples/EAGLE_low_z/EAGLE_25/eagle_25.yml

examples/EAGLE_low_z/EAGLE_50/eagle_50.yml

examples/EAGLE_low_z/EAGLE_6/eagle_6.yml

examples/GEAR/DwarfGalaxy/dwarf_galaxy.yml

...edGalaxy/IsolatedGalaxy_starformation/isolated_galaxy.yml

...olatedGalaxy/IsolatedGalaxy_starformation/plotSolution.py

examples/main.c

examples/parameter_example.yml

src/active.h

src/cache.h

src/cell.c

src/cell.h

src/debug.c

src/drift.h

src/engine.c

src/engine_drift.c

src/engine_maketasks.c