Turn on a subset of models, by default
Turn on a subset of models, by default

I think the default parameters file should provide settings that will
actually run. If all the models are turned off, which would be proper
(I don't want to give users the impression that certain models always
have to be selected), the ILAMB run would fail.

permamodel/ILAMB,permamodel/ILAMB,permamodel/ILAMB