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Beta 406:
-Updated nav grid behaviour in lifts. This prevents staff, in certain rare layouts, walking through the side of lifts, into the void, and despawning.
-Add tutorial pop up when lifts are first available.
-Vomit sprite randomised
-removed tip urging plant building in staff rooms as no longer possible
-litter affects refuse heatmap in tutorial
-Optimisation: calling train does not repeatedly trigger the flow finder, resulting in incremental performance increase
-Optimisation: full bins do not always call tutorial pop up script
