adjust_path_data()
Recalculate control value
assign_colors_to_stages()
Assign color to tasks
char()
as.character
create_color_dict()
stage color palette
create_gantt_config()
Create configuration list
create_stage_task_list()
Create list of tasks in each stages
create_summaries()
Create summary data frame
critical_path()
Calculate paths for Gantt chart
gantt()
Draws Gantt chart
middle_date()
Get middle date
mutate_task()
Mutate task
read_task()
Read task