text: exports.up = function(knex) {
    return knex.schema.alterTable("cards", tbl => {
      tbl.string("image_front").alter();
      tbl.string("image_back").alter();
    });
  };
  
  exports.down = function(knex) {
    return knex.schema.table("cards", tbl => {
      tbl.binary("image_front");
  
      tbl.binary("image_back");
    });
  };
  