d-vulkan, automatically generated D bindings for Vulkan

[Alex Parrill via Digitalmars-d-announce]

https://github.com/ColonelThirtyTwo/dvulkan

I know there are a few other bindings for Vulkan around, but I 
didn't see one that generated the bindings from the XML spec, so 
I made d-vulkan. The included vkdgen.py script leverages the spec 
parser included in the Vulkan-Docs repo to generate D bindings 
that can easily be updated with new versions and extensions.

The bindings load all functions using the vkGetInstanceProcAddr 
function; however, it does not provide any way of loading that 
function by default, and you must provide it when loading Vulkan. 
The `with-derelict-loader` dub configuration provides uses 
derelict.util to load the vkGetInstanceProcAddr function, and 
I've added a wiki page demonstrating loading the function using 
GLFW.

This includes bindings for all extensions, except for the 
platform-dependent VK_KHR_*_surface APIs, which require type 
declarations from other projects (like X11) that I didn't want to 
include. The platform-independent VK_KHR_surface extension is 
available, however.

(Currently the Derelict loader only works in Windows because I 
don't know the library names for Vulkan on Linux or OSX; if 
anyone knows them, please tell me, and I'll add them)