This PR should update the repo's packages to Pandeia v1.5.
bump engine version to v1.5
v1.5 data file download link (which should already be active)
revised notebooks and notebook python package
the nb_utils2.py file is no longer necessary - the notebooks run on the version of the file included in the engine now.
Manual testing: I have what is most likely going to be the v1.5 engine, and I have run the notebooks.
This PR cannot be tested or merged until we publish the v1.5 engine to PyPI.org. Given that @cdsontag will be publishing the engine, I'm tagging him on this.
This PR should update the repo's packages to Pandeia v1.5.
Manual testing: I have what is most likely going to be the v1.5 engine, and I have run the notebooks.
This PR cannot be tested or merged until we publish the v1.5 engine to PyPI.org. Given that @cdsontag will be publishing the engine, I'm tagging him on this.