.apply_diff_op          Perform data diffusion
.calc_diff_op           Compute diffusion operator
.calc_pca               PCA wrapper
.check_params           Parameter validation
.gene_indices           Finds row indices of signature genes
.invert_pca             PCA inversion
.minmax_scale           Minmax transform
.normalize              LogCP10K transform
.procrustes             Procrustes disparity
Seqtometry-package      Signature scoring for single cell analysis
impute                  MAGIC imputation (van Dijk et al. 2018)
score                   Seqtometry scoring (Kousnetsov et al. 2024)
wks                     Helper function for performing a weighted
                        Kolmogorov-Smirnov-like procedure.
