v1.2.0 - Django 5.0 support and bugfix for invalid tag overrides

Added

• Add support for Django 5.0 (#241)

Changed

• From Django >= 4.0, calls to Node.render() must always return a string, but this app previously allowed non-string values to be passed in the default_html parameter to override_tag. Passing a non-string now raises a TypeError when using Django >= 4.0, and raises a warning for older versions (issue #211).