old_contents: from .bayesian_optimization import BayesianOptimization, Events
  from .domain_reduction import SequentialDomainReductionTransformer
  from .util import UtilityFunction
  from .logger import ScreenLogger, JSONLogger
  from .constraint import ConstraintModel
  
  __all__ = [
      "BayesianOptimization",
      "ConstraintModel"
      "UtilityFunction",
      "Events",
      "ScreenLogger",
      "JSONLogger",
      "SequentialDomainReductionTransformer",
  ]
  
new_contents: from .bayesian_optimization import BayesianOptimization, Events
  from .domain_reduction import SequentialDomainReductionTransformer
  from .util import UtilityFunction
  from .logger import ScreenLogger, JSONLogger
  from .constraint import ConstraintModel
  
  __version__ = 1.3.0
  
  __all__ = [
      "BayesianOptimization",
      "ConstraintModel"
      "UtilityFunction",
      "Events",
      "ScreenLogger",
      "JSONLogger",
      "SequentialDomainReductionTransformer",
  ]
  
  
subject: add version number to __init__