For deme K, the population count was 8000 until a change 2113.0 generations ago, where it reduced to 1778, remaining steady thereafter.
time_units: generations
demes:
  - name: K
    start_time: .inf
    epochs:
      - start_size: 8000
        end_time: 2113.0
      - start_size: 1778
        end_time: 0