Merge remote-tracking branch 'upstream/master' into universal-damage

code/game/objects/effects/effects.dm

@@ -21,6 +21,9 @@
 /obj/effect/acid_act()
 	return
 
+/obj/effect/experience_pressure_difference()
+	return
+
 /obj/effect/decal
 	plane = FLOOR_PLANE
 	var/no_scoop = FALSE   //if it has this, don't let it be scooped up

code/game/objects/effects/temporary_visuals/miscellaneous.dm

@@ -90,6 +90,10 @@
 /obj/effect/temp_visual/dir_setting/wraith/out
 	icon_state = "phase_shift"
 
+/obj/effect/temp_visual/dir_setting/tailsweep
+	icon_state = "tailsweep"
+	duration = 4
+
 /obj/effect/temp_visual/wizard
 	name = "water"
 	icon = 'icons/mob/mob.dmi'