work on fixing block function
fix unblockCards function so that the correct cards are unblocked when the selected cards are removed from column.
make reserve cards not-selectable
add feature where clicking on a reserve stack of cards will add a card to each column of the board.
fix click event to make sure cards are selected when clicked when cards are served from reserve stacks
remove stack of reserve cards when clicked. remove console log test
add behavior for empty columns
adjust positioning. fix bug where moving a card to an empty column would not unblock cards
create functions to find and evaluate cards to remove. still need to add function to remove the cards.
add function to remove cards when you complete a column. also add winning message when board is cleared