Radiocheck = function (element, options) {
    this.init('radiocheck', element, options);
  }
Column visibility has changed.
 @name DataTable#column-visibility.dt
 @event
 @param {event} e jQuery event object
 @param {object} o DataTables settings object {@link DataTable.models.oSettings}
 @param {int} column Column index
 @param {bool} vis `false` if column now hidden, or `true` if visible