Feature Request

Add data-srcset for lazy loading multi-res mobile/desktop images.

Initially apply to list items (views).

Docs: https://afarkas.github.io/lazysizes/index.html

May increase Lighthouse score.

Being an offline app, and storing config files locally, I think if it remembers the resized side bar/panel that I used last time according to my comfort [I resize it smaller to get more space], it would be helpful.
Still not a big deal resizing everytime.
Thank you for your service and contributing to this great software.

It is a common use-case to require a comma in a form choice, such as "Please specify your income: $1,000 - $2,000" etc. I think it would be preferable to use pipe separator since it is not an English grammatical character.

While we do have a very customized form page, we are still leaning on some underpinnings of wagtail.contrib.forms, so I think we will either need to provide our own choice fi