Combined -u and -d
Make it possible to just update all feeds by passing -d
Fixed parsing of latest item date
Don't forget to close the file
Restructure command line flags
Implemented cleanup command

It can be invoked by passing the -c flag. The default behaviour is to
remove all episodes except the latest one, this can be changed by
passing the -k=<n> flag (where <n> is the amount of episodes to keep).
Remove -k flag for now
skip directories with one or less files
plural
Added '-u' flag to prevent cpod from updating the feeds

Pretty useful if you only want to remove older episodes using '-c' for
instance.
fix latestFile function
Use episode title as filename
Don't forget to close the file
Use after method to compare dates