v0.6.0

• Add fairlearn.preprocessing.CorrelationRemover preprocessing technique. This removes correlations between sensitive and non-sensitive features while retaining as much information as possible.

• Add control_features to the classification moments. These allow for data stratification, with fairness constraints enforced within each stratum, but not between strata.

• Update make_derived_metric() to use fairlearn.metrics.MetricFrame

• Assorted small documentation fixes