Changes in version 1.1.6                        

  - plot_heatmap: Handled error case if user provided no label_col
  - Improved robustness: & -> && in plot_pca and plot_barplot
  - Updated roxygen documentation format to newest version

                        Changes in version 1.0.1                        

  - plot_boxplot: Fixed critical bug which broke the function.
  - plot_boxplot: added parameter plot_signif to prevent clutter if many
    cell types and/or groups are plotted

                        Changes in version 1.0.0                        

  - Initial release

                       Changes in version 0.99.7                        

  - Adopted SummarizedExperiment data structure