drifter 0.2.1
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* tiny corrections requested by CRAN

drifter 0.2
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* `DALEX2` is replaced by `DALEX`
* `ceterisParibus2` is replaced by `ingredients`

drifter 0.1
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* `calculate_covariate_drift()` calculates 1d inverse intersection distances between two datasets
* `calculate_residuals_drift()` calculates 1d inverse intersection distances between two residuals calculated on old and new data
* `calculate_model_drift()` calculates distances between PDP curves calculated for new and old model
* `check_drif()` executes all tests for drift