plot_bivariate() supports setting size, alpha, and shape. #48add_pc_loadings() changed to add_pcs() for accuracy. Added fraction of variability explained by PCs to add_pcs(). #32plot_univariate() and plot_bivariate() supporting providing a partial string match to a variable name. This helps to generate consisitent plots even if names might change (like PC1 (10%)). #44add_pcs(). #42plot_heatmap() rowlabels are suppressed when there are too many features rather than setting size to zero. #45plot_heatmap() supports ordered objects. #37coerce_to_classes() added support for glue objects. #35