bbotk 0.7.0

• fix: Terminator$format(with_params = TRUE) printed an empty list when no parameter was set.
• refactor: OptimizerIrace automatically added the instances parameter to Objective$constants.
  From now on, the instances parameter can be also set manually.
• BREAKING CHANGE: branin(xs) is now branin(x1, x2, noise) and branin_wu(x1, x2, fidelity).
• feat: Add ObjectiveRFunMany that can evaluate a list of configurations with a user supplied function.
• fix: If all configurations were missing a parameter, ObjectiveRFunDt$eval_many() did not create a column with NA for the missing parameter.
• refactor: The default of digits in OptimizerIrace is 15 now to avoid rounding errors.
• refactor: The bounds of double parameters were processed with only 4 decimal places in OptimizerIrace.
  By default, the bounds of double parameters are represented with 15 decimal places now.
  The digits parameter of OptimizerIrace also changes number of decimal places of the bounds now.

bbotk 0.6.0

• fix: OptimizerIrace did not work with parameters with multiple dependencies.
• feat: Add new callback that backups the archive to disk to mlr_callbacks.
• feat: Create custom callbacks with the callback_optimization() function.

bbotk 0.5.4

• feat: Add OptimizerFocusSearch that performs a focusing random search.
• fix: Add missing parameters to OptimizerGenSA.

bbotk 0.5.3

• feat: Optimizer and Terminator objects have the field $id now.

bbotk 0.5.2

• refactor: The $print() method of OptimInstance omits unnecessary columns now.
• fix: The $clear() method of OptimInstance raised an error.
• fix: The $clear() method of Archive missed to reset the $start_time field.
• feat: Optimizer and Terminator objects have the optional field $label now.
• feat: as.data.table() functions for objects of class Dictionary have been extended with additional columns.
• feat: Add a as.data.table.DictionaryTerminator() function.

bbotk 0.5.1

• fix: Number of evaluations in log messages when search space is empty.
• feat: Added a as.data.table.DictionaryOptimizer method.
• feat: $help() method which opens manual page of an Optimizer.

bbotk 0.5.0

• Adds non dominated sorting with hypervolume contribution to Archive.
• New Codomain class which allows extra parameters.
• Objective values are not automatically named anymore, with the exception of
  an unnamed return in ObjectiveRFun.
• Fix deep clone in OptimInstance, Archive and Objective
• param_classes, properties and packages in optimizer are read-only
  fields.
• Exported branin function.

bbotk 0.4.0

• Allows empty search space and domain.
• Extended TerminatorEvals with an additional hyperparameter k to define the
  budget depending on the dimension of the search space.
• Adds bb_optimize() function for quick optimization.
• Adds OptimizerIrace from irace package.

bbotk 0.3.2

• Internal changes.

bbotk 0.3.1

• OptimInstance$clear() methods resets the instance.
• Prettier printing methods.
• Assert overlapping and reserved names in domain and codomain.