Coding and pull requests with the hydrological model CWatM (A5)

We include the settings savebasinmap = True and run into an error message. We update the CWatM code to remove deprecated notation related to NumPy and commit this change to GitHub. Silvia creates a fork of CWatM and makes a pull request to the main CWatM.

[@mohammadrezaranjbari7762]

Thanks, Dr Smilovic.