[Feature Request] VSlideGroup: Events when reaching the start/end of the group

[LoneRifle]

Problem to solve

Items in slide groups can currently be generated programmatically using the v-for directive. It is desired that when a user wishes to progress beyond the end of the slide group (or before the beginning), we are notified, so that we can proceed to generate more items for the v-for directive, and do some housekeeping (eg, perhaps remove items that have been scrolled way past the view to avoid consuming too much memory).

Doing so will allow a Vuetify user to create dynamic scrolling slide groups, with the items being generated in response to user events.

Proposed solution

An event could be emitted when:

• a user scrolls to either end of the group, as well as;
• when the user is at the end and clicks the prev/next button

[ttonyh]

Having an "overflow" event would be great as well. Currently a class is added "v-slide-group--is-overflowing", which is nice, but an event might be more useful.