OptimalTransportNetworkToolbox version 1.0.6

• Minor fixes to flow allocations
• Documentation for the dual solution with cross-goods-congestion (only implemented in Julia for now).

OptimalTransportNetworkToolbox version 1.0.5

• Taken OptimalTransportNetworkToolbox v1.0.4b from Edouard Schaal's website: https://sites.google.com/site/edouardschaal/research

• Applied minor fixes to apply_geography() function, the cross-good congestion solutions (correctly recovering the largest directional trade flow), and initial conditions.