Support random, cyclic, and wave arrivals
Support random, cyclic, and wave arrivals

deepkw/deepkw.github.io,culebron/atc,luznicky/atc,erikquinn/atc,deepkw/deepkw.github.io,erikquinn/atc,ghariman/atc,harp71/atc,glangford/atc,harp71/atc,culebron/atc,jpeterson1346/atc,tedrek/atc,erikquinn/atc,deepkw/deepkw.github.io,luznicky/atc,tedrek/atc,jpeterson1346/atc,glangford/atc,tedrek/atc,luznicky/atc,harp71/atc,ghariman/atc,ghariman/atc,jpeterson1346/atc