time_units: generations demes: - name: deme1 start_time: .inf epochs: - {end_size: 99.99000049998334, end_time: 8000.0, start_size: 99.99000049998334} - {end_size: 100.0, end_time: 4000.0, start_size: 99.99000049998334} - {end_size: 100, end_time: 0, start_size: 100.0} migrations: []