ggresponseexpdist

• added to possible positions on where to put the N of observations in Mean and Median tabs: (fixed, mean, median)
• added check box to use geom_path: Check box for lines: Respect data order? (requested by Mark Sale, Certara)
• small fixes in the shiny app position_beewwarm and position_quasirandom removing groupOnX
• added arguments show.exptile_values, show.exptile_values_pos and show.exptile_values_order to
  ggkmrisktable() (requested by Mathilde Marchand, Certara)
• added argument km_linewidth to control km curves linewidths (requested by Sejung Hwang, UCSF)
• deprecated gglogisticexpdist() and ggcontinuousexpdist() in favor of ggresponseexpdist()
  with model_type ="logistic" vs "loess" vs "linear" vs "none"
• several ER functions bugs were fixed e.g. when exposure_distributionand exposure_metric_split where set to "none"
• several additional features to color by endpoint using fit_by_color_fill TRUE FALSE
• several arguments to better control distribution y position e.g. dist_scale, dist_position_scaler , dist_offset
• possibility to specify provide custom names for placebo and standard of care via exposure_metric_soc_name and
  exposure_metric_plac_value
• possibility to specify "boxplots" for the exposure_distribution argument in ggresponseexpdist
• possibility to specify "none", "%","N (%)","N" for exposure_distribution_percent
• possibility to specify "none","left","right" for exposure_distribution_Ntotal
• separately control by dose and by exptile mean size mean_obs_bydose_text_size and mean_obs_byexptile_text_size
• separately control where to put the N by dose or by exptile using N_byexptile_ypos or N_bydose_ypos
  with options "with means","top","bottom","none", text size is controlled by N_text_size
• added option to add N total by dose for lineranges via lineranges_Ntotal with options "none","left","right"
• possibility to return the plot and a list of all datasets needed to redo all layers from scratch via return_list
• give user more controls on legends when using ggresponseexpdist() with arguments: color_legend_title,
  fill_legend_title, linetype_legend_title, shape_legend_title, linetype_legend_title, and legend_order