BUG: load `strings.json` with `utf-8` encoding
BUG: load `strings.json` with `utf-8` encoding

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