alluvial-data           Check for alluvial structure and convert
                        between alluvial formats
geom_alluvium           Alluvia across strata
geom_flow               Flows between lodes or strata
geom_lode               Lodes at intersections of alluvia and strata
geom_stratum            Strata at axes
lode-guidance-functions
                        Lode guidance functions
majors                  Student curricula across semesters
stat_alluvium           Alluvial positions
stat_flow               Flow positions
stat_stratum            Stratum positions
vaccinations            Influenza vaccination rates
