Support For "latest" Route

I understand that this isn't a forum, but is there support in docfx to mark a version of documentation with a "latest" tag?

For instance, something like
```
https://mysweetwebsite.awesome/docs/latest/pages/gettingstarted/myfristapp.html
```
would really be an alias for,
```
https://mysweetwebsite.awesome/docs/v1.0.8/pages/gettingstarted/myfristapp.html
```
where `v1.0.8` was the highest version in the docfx.json configuration found across all metadata tags.

If not, I'd like to submit this as a feature request.