gets/sets the status of whether the dropdown is open or closed
open
Examples
const dropdown = $.makeDropdown($.w/2, $.h/2, 100, [
"Option A",
"Option B",
"Option C"
]);
dropdown.open=true;
function update() {
dropdown.draw();
$.text.print(dropdown.x, dropdown.y-25, "Open:"+dropdown.open);
}