get all <deck> card bundles, if they match the protocol

def get_card_bundles(provider: Provider, deck: Deck) -> Generator:
    '''get all <deck> card bundles, if they match the protocol'''

    bundles = find_card_bundles(provider, deck)

    with concurrent.futures.ThreadPoolExecutor(max_workers=2) as th:
        for result in th.map(card_bundle_parser, bundles):
            if result:
                yield result