New ability to update an item's nickname

You can now update a board’s item terminology (item nickname) via the update_board mutation.

By setting the board_attribute to item_nickname, you can programmatically control the singular and plural labels used for items on a board.

mutation {
  update_board(
    board_id: 1234567890
    board_attribute: item_nickname
    new_value: "{\"preset_type\":\"other\",\"singular\":\"Task\",\"plural\":\"Tasks\"}"
  )
}