Update sn3d.h #8093

Job	Run time
classicmode_1d_3dgrid	2m 23s
classicmode_3d	3m 48s
kilonova_1d_1dgrid	3m 59s
kilonova_1d_3dgrid	4m 52s
kilonova_2d_2dgrid	4m 4s
kilonova_2d_2dgrid_barnesthermalisation	2m 44s
kilonova_2d_2dgrid_expansionopac	5m 5s
kilonova_2d_2dgrid_xcomgammaphotoion	2m 31s
kilonova_2d_3dgrid	4m 54s
nebular_1d_3dgrid	4m 12s
nebular_1d_3dgrid_limitbfest	5m 11s
classicmode_1d_3dgrid testmode ON	4m 19s
classicmode_3d testmode ON	4m 24s
kilonova_1d_1dgrid testmode ON	9m 47s
kilonova_1d_3dgrid testmode ON	9m 16s
kilonova_2d_2dgrid testmode ON	14m 43s
kilonova_2d_2dgrid_barnesthermalisation testmode ON	13m 7s
kilonova_2d_2dgrid_expansionopac testmode ON	1h 0m 10s
kilonova_2d_2dgrid_xcomgammaphotoion testmode ON	13m 59s
kilonova_2d_3dgrid testmode ON	14m 45s
nebular_1d_3dgrid testmode ON	22m 11s
nebular_1d_3dgrid_limitbfest testmode ON	20m 42s
combine_checksums	10s
	3h 51m 16s

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