old_contents: __version__ = '0.4.3.dev0'
  
  # this should ensure that we can still import constants.py as climlab.constants
  from climlab.utils import constants
  from climlab.utils import thermo, legendre
  # some more useful shorcuts
  from climlab.model.column import GreyRadiationModel, RadiativeConvectiveModel, BandRCModel
  from climlab.model.ebm import EBM, EBM_annual, EBM_seasonal
  from climlab.domain import domain
  from climlab.domain.field import Field, global_mean
  from climlab.domain.axis import Axis
  from climlab.domain.initial import column_state, surface_state
  from climlab.process import Process, TimeDependentProcess, ImplicitProcess, DiagnosticProcess, EnergyBudget
  from climlab.process import process_like, get_axes
  
new_contents: __version__ = '0.5.0.dev0'
  
  # this should ensure that we can still import constants.py as climlab.constants
  from climlab.utils import constants
  from climlab.utils import thermo, legendre
  # some more useful shorcuts
  from climlab.model.column import GreyRadiationModel, RadiativeConvectiveModel, BandRCModel
  from climlab.model.ebm import EBM, EBM_annual, EBM_seasonal
  from climlab.domain import domain
  from climlab.domain.field import Field, global_mean
  from climlab.domain.axis import Axis
  from climlab.domain.initial import column_state, surface_state
  from climlab.process import Process, TimeDependentProcess, ImplicitProcess, DiagnosticProcess, EnergyBudget
  from climlab.process import process_like, get_axes
  
subject: Increment version number to 0.5.0.dev0