Vulkan 1.4 support

First, thanks for this project, you are doing a great job!

I keep an eye out for 1.4 support for a while. I know there is a branch, and some work left. However, work seem to have stalled.

I am wondering, is a 1.4 release (0.39 I guess?) planned to be released anytime soon?
And if not, I would be happy to learn about the why, just genuinely interested.

Thanks!