diagonal_heatmap        Plot guide count matrix as an approximately
                        diagonal heatmap
fishash                 Cell hashing by one-sided Fisher test
impute_masked_counts    For a matrix of counts, impute masked entries
                        via an alternating algorithm
nonzero_histogram_with_weighted
                        Plot histogram and weighted histogram of UMI
                        counts
simulate_guidebender    Simulate guide count matrix based on a
                        cellbender-like model
simulate_guidebender2   Alternative interface to 'simulate_guidebender'
                        that tries to have more interpretable input
                        parameters, in particular: Signal to Noise
                        Ratio, count per cell, and fraction of noise
                        that is endogeneous vs exogeneous. These
                        replace the following parameters from
                        'simulate_guidebender' which should not be used
                        with this function: 'd_mu_drop', 'd_mu_cell',
                        'rho_alpha', 'rho_beta'.
sort_columns_by_top_row
                        Sort matrix columns to place maxes near
                        diagonal
tapseq_diffex           TAPseq benchmark dataset (Schraivogel et al
                        2020)
