Allow options outside of optgroup

[jgbishop]

This plugin is great, but it doesn't seem to allow a setup where I can have options outside of an optgroup:

<select>
  <optgroup>
    <option>
    <option>
  </optgroup>
  <option>
</select>

Is there a tweak I can make somewhere to allow this case?

[linacs]

For anyone wanting to spare 3 hours, the solution is very easy:
line 15, replace:
this.$element.find(':not(.selected-custom) :selected, .selected-custom').each(function () {
by:
this.$element.find(':not(.selected-custom) :selected, .selected-custom, >:selected').each(function () {

This just also consider directly under , not only through (which is filtered by the class "selected-custom").