Vuetify: [Feature Request] Expand prop for v-list-group

[rkomiyama]

Problem to solve

Allows multiple v-list-groups to remain open while toggling a v-list-group.

Proposed solution

There seems to be a callback function called toggle() that, when clicking on a v-list-group, toggles the value prop for the other v-list-groups. If we add the expand prop to v-list-group, it would act just like it would in v-expansion-panel.

[KaelWD]

Already exists: https://codepen.io/anon/pen/JeqPmr?editors=1010

[mitar]

This should really be documented somewhat better.

[Sjoerd82]

The example given by KaelWD gives an "Uncaught ReferenceError: Vue is not defined at pen.js:-29". However, the trick is to add an expand prop to the <v-list>.

[nicolo-paganin]

This should really be documented somewhat better.

Yes I found it after 20 minutes reading this issue. It has to be better documented