feat: allow EI to be adjusted by epsilon to strengthen exploration (#… #146

Job	Run time
mlr-org/bbotk	4m 22s
mlr-org/mlr3	4m 25s
mlr-org/mlr3tuning	4m 40s
mlr-org/mlr3tuning', 'mlr-org/mlr3learners', 'mlr-org/mlr3pipelines', 'mlr-org/bbotk', 'mlr-org/paradox	5m 12s
	18m 39s

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