Load the pairlist, add new stuff, save it out

def _append_pairs(new_pairs):
    """ Load the pairlist, add new stuff, save it out """
    desired_pairs = restore_pairs() or []
    desired_pairs += new_pairs
    print("Adding {} new pairs, queue has {} pairs".format(len(new_pairs), len(desired_pairs)))
    save_pairs(desired_pairs)