PowNet 2.0

- Replaced pyomo with gurobipy –> faster, with lower memory requirement
- Integrated the opensource solver HiGHS as an alternative to Gurobi
- Largely revised the formulation of the constraints for a tighter optimization problem
- Major changes and upgrades to the model architecture
We are now working on (1) additional optimization algorithms to make the model faster and (2) a deeper integration with hydropower system models. 2.x versions should be released in summer!