Version 0.2.1

A couple new feautures are added:

0.2.0 introduced possibility to save plots of individual features in EMF format. We then noticed that using one large PDF file can sometimes be useful, so that functionality is added back. In addition, the plots can be saved as PNG, SVG or TIFF images. In addition, text size can be changed. This affects the following functions: save_subject_line_plots() , save_group_boxplots(), save_beeswarm_plots(), save_scatter_plots() and save_group_lineplots()

perform_lm_anova() computes type I ANOVA tables for linear models. More ANOVA models should be added in upcoming releases.