Testing 1.0.0 branch with real world models.

[MAfarrag]

What is the need for this task.

• Update the release branch Release 1.0.0 #895
• Check with jelmer how he is testing the big models in the Overview of model external forcing Conversion  #906 issue and use these models to test the release branch.
• Document how DIMR is used to test the above models (where to get the latest version, how to run it, what to look at to know the run is successful, ... )
• Create Issues for any problems found in the conversion or in the dimr runs.