- Modify the entropic risk measure to be more robust for large price values
- Build  datahedger class which can hedge with data already simulated or generated
- Build deephedger class which can hedge with different neural networks at different time steps
- add matplotlib into dependency (maybe move to dev-dependencies next time we do not need to include plotting features in the future)
- add data_hedge.ipynb illustrating the two new classes

use only entropic risk measure