relax SVN archive

Removed the grid search from the 5-state xz model system test.

This has been replaced by a call to value.set() as the grid search is too expensive.

Bug fix for the N-state model disassemble_param_vector() method.

The last probability for state N was being incorrectly calculated!

Created a unit test for the N-state model disassemble_param_vector() method.

Bug fix for the n_state_model user functions.

The class instance now ends in '_obj'.

Bug fix for the unit test of the N-state model assemble_param_vector() method.

The numpy array could not be directly compared so each element is checked individually.

Bug fix for the N-state model assemble_param_vector() method.

The second last probability was missing from the parameter vector.

Created a unit test for the N-state model assemble_param_vector() method.

Bug fix for the N-state model assemble_param_vector() method.

The sim_index arg is now a keyword arg which defaults to None. This arg is not required.

Renamed the class instance n_state_model to n_state_model_obj to avoid a name clash with the module.

Completed the assemble_param_vector() method.