bug fix, when estimating uncertainty the group vectors where not multiplied by the stoichiometric coefficient
bug fix, when estimating uncertainty the group vectors where not multiplied by the stoichiometric coefficient

eladnoor/equilibrator,flamholz/equilibrator,eladnoor/equilibrator,eladnoor/equilibrator,flamholz/equilibrator,eladnoor/equilibrator,flamholz/equilibrator,flamholz/equilibrator