Mathis Rosenhauer

I found that eb343e8ca35aebd131c1260bf7c423f79de2b86f caused the selection position to be off. It also broke the autocomplete.Select2() widget for me. I don't fully understand the purpose of this commit but can't...

Actually, this is already possible so please ignore my question. Select2 supports [data-* attributes](https://select2.org/configuration/data-attributes). You can override containerCssClass with ``` attrs={'data-container-css-class': ''} ``` This would also answer #1122 ``` attrs={...