JuliaOpt/MathProgBase.jl — pull request #46 by mlubin (2014-11-20 01:39:59+00:00)
Title: interface for quadratic duals

and clarification of separation between linear and nonlinear constraints (closes #34)

Ref JuliaOpt/JuMP.jl#291.

I got this working with Gurobi by asking for the QC duals.