relax SVN archive

Wrote a third unit test for the maths_fns.n_state_model.func() optimisation target function.

Wrote another unit test for the maths_fns.n_state_model.func() optimisation target function.

Bug fix for the unit test of the maths_fns.n_state_model.func() optimisation target function.

There was a mix up between Sxz and Syz between the reduced and full tensors!

Bug fix for the maths_fns.n_state_model.func() optimisation target function.

The probability for state N was still being incorrectly calculated!!!

Bug fix for the maths_fns.n_state_model.func() optimisation target function.

The dot product is now used for the matrix multiplication R^T.X.R.

Expansion of the docstring of the unit test of maths_fns.n_state_model.func().

Wrote a unit test for the maths_fns.n_state_model.func() optimisation target function.

Bug fix for the maths_fns.n_state_model.func() optimisation target function.

The back-calculated the reduced tensor structure is now being reset to zero at each call. Because
of the sum, it was just getting bigger and bigger.

Bug fix for the maths_fns.n_state_model.func() optimisation target function.

The probability of state N was not being caught and calculated from the others.

Fixes for the default_value() method.

The value.set() user function now works for the N-state model.