Start bot in long-polling mode

    :param dispatcher:
    :param loop:
    :param skip_updates:
    :param reset_webhook:
    :param on_startup:
    :param on_shutdown:
    :param timeout:

def start_polling(dispatcher, *, loop=None, skip_updates=False, reset_webhook=True,
                  on_startup=None, on_shutdown=None, timeout=20, fast=True):
    """
    Start bot in long-polling mode

    :param dispatcher:
    :param loop:
    :param skip_updates:
    :param reset_webhook:
    :param on_startup:
    :param on_shutdown:
    :param timeout:
    """
    executor = Executor(dispatcher, skip_updates=skip_updates, loop=loop)
    _setup_callbacks(executor, on_startup, on_shutdown)

    executor.start_polling(reset_webhook=reset_webhook, timeout=timeout, fast=fast)