Feature Request: Auto-collapse channel categories and server groups

I think it would be nice to have an option that makes it so that categories and server groups automatically collapse. IE, by default all categories and server groups are collapsed, when you click on a category it will expand, but when you click on another category it will collapse the previously expanded one and expand the one you just clicked on, this way only one category is expanded at a time. This would work the same for server groups too.