[Development] Qt6 repo

[Allan Sandfeld Jensen]

On Mittwoch, 13. Januar 2021 12:31:50 CET Eric Lemanisser wrote:
> that's the obvious choice, if it was not already used by qt4.
> 
Then rename the qt4 repo, it is not actively maintained anymore and only 
stored for history. We couldn't do that when creating qt5 as it was still 
actively maintained and would break a lot of checkouts, but we could do it 
now.

Best regards
Allan