CheckEvent takes in two arguments, the city and the year, and returns true if the city exists.

CityClean returns a city name all in lower case with spaces converted to dashes.

CreateEvent takes input from the user to create a new event.

Logo takes in a path to an event's main logo and copies/renames it to the proper destination.

LogoSquare takes in a path the event's square logo, and crops/resizes it and copies it to the proper destination.

NewEvent takes in a constructed Event type and generates the stuff.

LogoPath is the fully qualified path to the event's logo.

SquareLogoPath is the fully qualified path to the event's square logo.