Added stoichiometric element of 'S2':0.0 to reaction 'out' so that S2 would be treated as a modifier and generate proper SBML output (SBML fuiles were'nt passing validation).
Added stoichiometric element of 'S2':0.0 to reaction 'out' so that S2 would be treated as a modifier and generate proper SBML output (SBML fuiles were'nt passing validation).

GutenkunstLab/SloppyCell,GutenkunstLab/SloppyCell