Initially, the population size of deme K stood at 1183, but this changed 948.8 generations ago when it changed to 2049, and it has been stable at that size up to today.
time_units: generations
demes:
  - name: K
    start_time: .inf
    epochs:
      - start_size: 1183
        end_time: 948.8
      - start_size: 2049
        end_time: 0