python3 process_members.py <json_file> <command>Takes an export of the Firebase database, and performs a number of commands.
unpaid_emails: Produces a list of emails for students who've registered online but not yet paid.paid_names: Produces the names of all students who've registered, and paid their membership fee.all_emails: Produces a list of emails for all students who've registered.
If you run with python3, the emails won't have the unicode 'u' attached, and you can copy them straight into your email client.