first commit for hw6, mostly fleshed out with db building for top airports, icao lat/lon, and weather data from wunderground
added some comments, added 'add_weatherdata' functino
added weatherdata code, works
finished code that runs correlations
added plotting functions
redid things using sql functions rather than pandas, changed plots
final changes, removed unused code, made a run function
added airports.db so you don't have to remake the database from scratch