Until a shift occurred 1567.911 generations ago, deme C's population was consistently 4358. Since then, it increased to 4707, a number that has remained unchanged to the current time.
time_units: generations
demes:
  - name: C
    start_time: .inf
    epochs:
      - start_size: 4358
        end_time: 1567.911
      - start_size: 4707
        end_time: 0