Test Jupyter notebooks with current Tourmaline notebook, updated package commands

[ksilnoaa]

No description provided.

[lukenoaa]

Variable tourmdir has been added to all notebooks to allow user to specify the relative or absolute path of the tourmaline directory where the input files will be accessed. This is useful if working with Tourmaline output that's in a central location (eg, on a shared server) that you can't or don't want to modify.