django-smart-selects: Doesn't work with jQuery 3

All versions of django-smart-selects prior to version 1.2.8 are vulnerable to an XSS attack as detailed in issue 171. As a result, all previous versions have been removed from PyPI to prevent users from installing insecure versions. All users are urged to upgrade as soon as possible.

Checklist

• This issue is not about installing previous versions of django-smart-selects older than 1.2.8. I understand that previous versions are insecure.
• I have verified that that issue exists against the master branch of django-smart-selects.
• I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• I have debugged the issue to the smart_selects app.
• I have reduced the issue to the simplest possible case.
• I have included all relevant sections of models.py, forms.py, and views.py with problems.

Steps to reproduce

Expected behavior

Actual behavior