ashenoy-cmbi/grafify: v1.5.1

grafify v1.5.1 This update fixes and cleans up code to remove all errors, warnings and notes from devtools::check(). All previous code should still work. a. The main update is that broom.mixed::augment is used to get model residuals than the fortify method as this will be deprecated soon. The broom.mixed package therefore required. b. The way ANOVA table is generated no longer relies on an internal function from lmerTest, but instead forces a mixed model object as lmerModLmerTest object to get F and P values in ANOVA tables from the stats::anova call. c. The magrittr package is required for internal use of pipes (%>%). d. Much of the code for simple_model and mixed_model was cleaned up so that model outputs are as close to objects generated by native calls to lm or lmer. e. Several internal functions related to the colour palettes have now been exported as this was easier. f. The make_1w_rb_data and make_2w_rb_data functions have been updated to have consistent factor and level names