BUG: added `nargs` to band-list, band-systems, and band-instruments
BUG: added `nargs` to band-list, band-systems, and band-instruments

villrv/MOSFiT,mnicholl/MOSFiT,mnicholl/MOSFiT,guillochon/MOSFiT,bmockler/MOSFiT,bmockler/MOSFiT,villrv/MOSFiT,guillochon/MOSFiT,guillochon/MOSFiT,mnicholl/MOSFiT,guillochon/FriendlyFit