Main entry point for gunicorn_console.

def main():
    """
    Main entry point for gunicorn_console.
    """
    # Set up curses.
    stdscr = curses.initscr()
    curses.start_color()
    curses.init_pair(1, foreground_colour, background_colour)
    curses.noecho()
    stdscr.keypad(True)
    stdscr.nodelay(True)
    try:
        curses.curs_set(False)
    except:
        pass
    try:
        # Run main event loop until quit.
        while True:
            try:
                update_gunicorns()
                handle_keypress(stdscr)
                display_output(stdscr)
                curses.napms(int(screen_delay * 1000))
            except KeyboardInterrupt:
                break
    finally:
        # Tear down curses.
        curses.nocbreak()
        stdscr.keypad(False)
        curses.echo()
        curses.endwin()