Django-crispy-forms

* Added `custom-select` for select widgets within prepended and appended fields (1116)

See the [1.11.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/14?closed=1) for the full change list.

* Implemeneted `custom-select` for Select widgets in the Bootstrap4 Template Pack (1091)
* Fixed `data-parent` in AccodrianGroup (1091)
* Documentation improvements

See the [1.11.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/13?closed=1) for the full change list

* Fixed test causing `SystemCheckError` in some cases. (1075)
* Radio and Checkbox now respect the field's `disabled` attribute when using the Bootstrap4 template pack. (1057)
* A number of documentation improvements.

See the [1.10.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/12?closed=1) for the full change list

* Fixed FileField UI bug

See the [1.9.2 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/11?closed=1) for the full change list.

* Added Bootstrap 4 styling for clearable file widget.
* Fixed FileField UI bug.
* Project now uses GitHub actions for testing.

See the [1.9.1 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/10) for the full change list.

* Removed support for Python 2.
* Removed support for Django versions prior to 2.2.
* CSS for Column layout object in Bootstrap 4 template pack changed to 'col-md'. Default is now over ridden when another 'col' class is added to css_class.

See the [1.9.0 Milestone](https://github.com/django-crispy-forms/django-crispy-forms/milestone/9) for the full change list.