python-awips 18.1.5

This is a minor release with the following changes:

• Added a new class awips.dataaccess.ModelSounding() to request a vertical sounding from any available AWIPS model with isobaric data levels.
• Published a new Forecast Model Vertical Sounding notebook using awips.dataaccess.ModelSounding() to retrieve a profile and MetPy to plot a Skew-T/Log-p