Merge branch 'yaml_arrays' into 'master'

doc/Doxyfile.in

examples/CoolingHalo/cooling_halo.yml

examples/CoolingHaloWithSpin/cooling_halo.yml

examples/ExternalPointMass/externalPointMass.yml

examples/HydrostaticHalo/hydrostatic.yml

examples/IsothermalPotential/isothermal.yml

examples/KeplerianRing/keplerian_ring.yml

examples/KeplerianRing/write_gadget.py

examples/MultiTypes/multiTypes.yml

examples/parameter_example.yml

src/parser.c

src/parser.h

src/partition.c

src/potential/isothermal/potential.h

src/potential/point_mass/potential.h

src/potential/point_mass_ring/potential.h

src/potential/point_mass_softened/potential.h

src/space.c

src/tools.c

src/tools.h