TSPRouter class only in directed namespace

[alecava58]

I used the version 0.14.5 of Itinero.Optimization.
When I need to optimize I used:
var routerTSP = new TSPRouter(new WeightMatrixAlgorithm(router, InstanceProfile, massResolver), 0);

I've updated the Itinero.Optimization library to the lastest beta and now the class TSPRouter is in Itinero.Optimization.Abstract.Solvers.TSP.Directed namespace only.

I'm missing something? How can I calculate a tour with undirected graph?

Thanks in advance