ENH: nb updates
ENH: nb updates

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