The number of individuals in deme C remained at 4366 until 8056.5218 generations ago, at which time it grew to a new stable size of 8212.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 4366
        end_time: 8056.5218
      - start_size: 8212
        end_time: 0