butterflies update

src/modules/butterflies/CMakeLists.txt

src/modules/butterflies/butterflies_action_helpers.c

src/modules/butterflies/butterflies_action_helpers.h

src/modules/butterflies/butterflies_actions.c

src/modules/butterflies/butterflies_actions.h

src/modules/butterflies/butterflies_dispersal.c

src/modules/butterflies/butterflies_filenames.c

src/modules/butterflies/butterflies_filenames.h

src/modules/butterflies/butterflies_generations.c

src/modules/butterflies/butterflies_generations.h

src/modules/butterflies/butterflies_inline.h

src/modules/butterflies/butterflies_main.c

src/modules/butterflies/butterflies_main.h

src/modules/butterflies/butterflies_overlays.c

src/modules/butterflies/butterflies_overlays.h

src/modules/butterflies/butterflies_populations.c

src/modules/butterflies/butterflies_populations.h

src/modules/butterflies/butterflies_stats.c

src/modules/butterflies/butterflies_stats.h

src/modules/butterflies/butterflies_vital_rates.c