inspect_cat             Summarise and compare the levels within each
                        categorical feature in one or two dataframes.
inspect_cor             Summarise and compare Pearson's correlation
                        coefficients for numeric columns in one or two
                        dataframes.
inspect_imb             Summarise and compare columnwise imbalance for
                        non-numeric columns in one or two dataframes.
inspect_mem             Summarise and compare the memory usage in one
                        or two dataframes.
inspect_na              Summarise and compare the rate of missingness
                        in one or two dataframes.
inspect_num             Summarise and compare the numeric variables
                        within one or two dataframes
inspect_types           Summarise and compare column types in one or
                        two dataframes.
