cleanup
Added source.sh for shortcutting commonly used commands
added more months, years for breaking up the csvs
added two csv outputs
ah, todo's.
add check_date method, will work on getting off all this happy-path stuff going on
introduced multiplier to percapita, so the numbers will be easier to read and we can say fancy things like 50 crimes per 1,000 people
ooooh, let's get a median
work on slicing the rankings dict