[Development] Branch for Qt 6

[Edward Welbourne]

Lars Knoll (15 February 2019 09:03) wrote
> * Don’t remove any functions from wip/qt6 unless they are marked as
>   deprecated in dev or else you have discussed it on the mailing list
>   and gotten maintainer approval for the removal

To avoid conflicts on merging, when deprecating in dev and removing
from Qt6, please wait for the deprecation in dev to have merged to
wip/qt6 before turning the deprecation into removal there.

	Eddy.