BUG: was using wrong time for first accretion time, now using self._rest_t_explosion
BUG: was using wrong time for first accretion time, now using self._rest_t_explosion

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