make the message more helpful

[bzkrouse]

Because ard_stack uses bind_ard under the hood, we are now dropping its attributes and not using them for shuffle_card (an oversight in the cards update). This is a regression, since we used to preserve the attributes of ard_stack and by was not required in shuffle_card. Adding a more explicit message and suggestion to the user to assist in updating their code to match previous behavior.

Note that ard_stack_hierarchical is not impacted.

[alanahjonas95]

thanks for the update to the message

[dragosmg]

Just a small comment.

[dragosmg]

Looks great! Thanks.