Merge branch 'black_hole_tasks' into 'master'

configure.ac

doc/Doxyfile.in

examples/EAGLE_ICs/EAGLE_12/eagle_12.yml

examples/EAGLE_ICs/EAGLE_25/eagle_25.yml

examples/EAGLE_ICs/EAGLE_50/eagle_50.yml

examples/EAGLE_low_z/EAGLE_12/README

examples/EAGLE_low_z/EAGLE_12/eagle_12.yml

examples/EAGLE_low_z/EAGLE_25/README

examples/EAGLE_low_z/EAGLE_25/eagle_25.yml

examples/EAGLE_low_z/EAGLE_50/README

examples/EAGLE_low_z/EAGLE_50/eagle_50.yml

examples/EAGLE_low_z/EAGLE_6/README

examples/EAGLE_low_z/EAGLE_6/eagle_6.yml

examples/main.c

examples/parameter_example.yml

src/Makefile.am

src/active.h

src/black_holes.h

src/black_holes/Default/black_holes.h

src/black_holes/Default/black_holes_iact.h