Converted the model-free linear_constraints() method to the new relax design.
Fix in the assemble_scaling_matrix() docstring.
Passed the scaling matrix into the grid_search_config() method.
Added the missing self arg to test_grid_size().
Added the missing self arg to a number of grid search methods.
Passed the lower, upper, and inc variables into grid_search_config().
A number of modifications to get the grid_search_config() method to work.
Bug fix, 'if scaling_matrix:' cannot be used on a numpy object.
The param_set variable is now passed into assemble_scaling_matrix().
Passed the number of params into the assemble_scaling_matrix() method.