Version management for exported themes

At the moment, if I select “Export theme” I don’t see any option, but I think that a “version” field would be very handy.

For example: I create a theme with some templates, but after some time I want to add another template, or add a style variation. So I edit my theme and then export a second time. However, my exported theme is always version “0.0.1”.

I know I can just edit the style.css inside my zip file but I think (and hope) this is a small thing that could make theme developers avoid errors or bad habits.