Fixes issue found while implementing gurobi backend related to how updates to parameters filter through the rest of the backend model.
It now goes into variables and updates those if needs and it then implements the updates in order (parameters->variables->exprs->constrs->objective)
Fixes issue found while implementing gurobi backend related to how updates to parameters filter through the rest of the backend model. It now goes into variables and updates those if needs and it then implements the updates in order (parameters->variables->exprs->constrs->objective)
Reviewer checklist: