- Enable enhanced mode by default, use VKCPP_DISABLE_ENHANCED_MODE to disable it
- Rename vk_cpp.h to vk_cpp.hpp to be more standard-conform with regards to naming
- Automatically use vk.xml from submodule if no other file has be specified
- Generate header in vulkand folder to avoid copying the file after generating it
- Catch exceptions in generator
moved vk::Optional constructor on std::nullptr_t from private to public;
introduced vk::Optional::operator->() and explicit operator bool();
removed static operator null() on all struct-wrapper classes
