Grid-wise Evaluation 'Optimizer'
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class SimpleGridOptimizer(_opt_id=None, _signal_pipe=None, _results_queue=None, _pause_flag=None, _is_log_detailed=False, _workers=1, _backend='threads', nsteps=10)

   A simple example optimizer, that just evaluates the fitness
   function on a regular grid in parameter space.

   Create a new optimizer for a regular grid of "nsteps" points in
   every active parameter's range.
