Copied Eric's logic from _SA_from_SP_Baltic to _SP_from_SA_Baltic Removed _delta_SA boolean doctest Fixed typo at SP_from_SA, and removed in_ocean output
Copied Eric's logic from _SA_from_SP_Baltic to _SP_from_SA_Baltic
Removed _delta_SA boolean doctest
Fixed typo at SP_from_SA, and removed in_ocean output

The __main__ call now run the North Pacific test data, since the previous data was reduntant (inside test/matlab-test.py).

ocefpaf/python-seawater,pyoceans/python-seawater,pyoceans/python-seawater,ocefpaf/python-seawater