Foxes-opt

- Support for *foxes* v1.3

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.4](https://github.com/FraunhoferIWES/foxes/commits/v0.4)

- Introducing command line application `foxes_opt_yaml`: Runs optimization from `yaml` parameter input file, no Python script needed.
- Changes in `FarmVarsObjective`: Renaming contraction rule `mean` into `mean_no_weights`.
- Adding run-time factories to problems, objectives, and constraints.
- Introducing `output` sub package, and first outputs `SingleOptResultsWriter` and `MultiOptResultsWriter`
- New example `yaml_input`, demonstrating how to run *foxes_out through a yaml parameter file

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.3](https://github.com/FraunhoferIWES/foxes/commits/v0.3)

- New notebook: `wake_steering.ipynb`, demonstrating how to optimize yaw angles

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.2.2](https://github.com/FraunhoferIWES/foxes/commits/v0.2.2)

- Bug fixed with `MaxFarmPower` objective, now using states weights in states contraction

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.2.1](https://github.com/FraunhoferIWES/foxes/commits/v0.2.1)

- Adding github workflow for automatic testing
- Adding support for foxes engines

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.2](https://github.com/FraunhoferIWES/foxes/commits/v0.2)

- Updated documention

**Full Changelog**: [https://github.com/FraunhoferIWES/foxes/commits/v0.1.7](https://github.com/FraunhoferIWES/foxes/commits/v0.1.7)