Bump version number and date

src/vk_mem_alloc.h

diff --git a/src/vk_mem_alloc.h b/src/vk_mem_alloc.h
index 11b68f8..267485f 100644
--- a/src/vk_mem_alloc.h
+++ b/src/vk_mem_alloc.h
@@ -29,9 +29,9 @@
 

 /** \mainpage Vulkan Memory Allocator

 

-<b>Version 2.3.0</b> (2019-12-04)

+<b>Version 2.4.0-development</b> (2020-03-02)

 

-Copyright (c) 2017-2019 Advanced Micro Devices, Inc. All rights reserved. \n

+Copyright (c) 2017-2020 Advanced Micro Devices, Inc. All rights reserved. \n

 License: MIT

 

 Documentation of all members: vk_mem_alloc.h