On Wed, Aug 28, 2019 at 11:08:37AM +0200, Greg Kroah-Hartman wrote:

> How about this, when sending a v2, you have it be in response to the v1
> patch?  Same for v3, have it be in response for the v2 one.  And so on.

That seems like it might confuse mail readers and have them do
interesting things with threading so they don't group the entire new
version of the series together but instead split it through the earlier
versions.