… Vulkan 1.2 and/or a handful of extensions are available.

…nfuse some compilers that think the end scope objects are function declarations

…ed to clear g_Remotery only after calling _rmt_UnbindVulkan or _rmt_UnbindD3D12 since both functions access g_Remotery

…h a dataSize of 0

…32k bytes, or 4k queries

…ns a timestamp in the mach_continuous_time() time domain instead of mach_absolute_time(), which I think is a bug

…formation w.r.t. MoltenVK/Vulkan. I'm close to convincing myself that I should drop querying the CPU timestamp entirely from Vulkan and just query it myself (like the Linux fallback does).

…etInstanceProcAddr, not vkGetDeviceProcAddr

…Means the user doesn't have to do this themselves

…tery.h and README

…em. Fix and update documentation

1. Return RMT_ERROR_NONE instead of NULL from rmt_BindVulkan if Vulkan is not enabled
2. Explicitly cast function pointers to void* in README since this is potentially required by some compilers
3. Use rmtMakeError in rmt_BindVulkan to describe what parameter/function pointer is missing