Added standard InChi key & string for R13I1
Added standard InChi key & string for R13I1

Values obtained from: https://pubchem.ncbi.nlm.nih.gov/compound/16843#section=Names-and-Identifiers
CoolProp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,henningjp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,CoolProp/CoolProp,henningjp/CoolProp