v2.1.4

Fixed bugs

• DomCol: exclude parallel columns if dual reductions are disabled
• DoubleToNEq: prefer variables with integral scalar over fractional scalar
• DualInfer: check if propagating dual variables leads to infeasibility to return Unbounded or Infeasible
• DualInfer: ensure the primal problem is bounded before changing constraints to equalities
• Substitutions: if applying substitutions lead to small or huge coefficients leading to numerical troubles in the process