public void MergeWith(CardController otherCard, List <CardController> cards, List <TileController> commonTiles)
{
//Debug.Log("?????????????????????????????? MergeWith: Card = " + this);
//Debug.Log("starting merge with " + otherCard);
//Debug.Log("and commonTiles = " + commonTiles);
column.MergeCards(this, otherCard, cards, commonTiles);
}