Joel Cavat

It should be fixed by #48, #67 and #68

very elegant ! You should consider at least quadratic inequalities. It seems it's now well supported by CBC.

As far as I know, `MPS` is well recognized by the main solvers (CBC, Gurobi, CPLEX...), such as `LP`. If it is better specified, `MPS` could be a good candidate.

ok, thank you for your research. We can consider using multiple formats.

`Optimal/Suboptimal` for something ok and grouping `Infeasible/Unbounded` and `Notsolved` into one case containing error message details.

I would prefer one of these solution : 1) ```rust Result ``` - with `NoSolution` defining the `Error` trait and replace current `String` by `Error` and - `Solution` having a...