APASS AIJ Error Fix

In this release:

An error was found in the APASS_AIJ_comparison_selector.py file where if the final list of potential comparison stars was empty, the program would crash. The old method attempted to remedy this with an if statement but this was the main cause of the crash. Now if the that same list is empty, it will output a print statement saying that there were no comparison stars found between APASS and AIJ.