BUG: diag also checks obs type now
BUG: diag also checks obs type now

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