message: Update RELEASE_NOTES for 1.9.6
diff: @@ -5,11 +5,16 @@ A new header is inserted each time a *tag* is created.
  ## Next release (main branch)
  +## v1.9.7
  +
  ## v1.9.6
  - Added View::setVsmShadowOptions (experimental)
  - Add anisotropic shadow map sampling with VSM (experimental)
  - matc: fixed bug where some compilation failures still exited with code 0
  +- Vulkan + Android: fix build break
  +- Add optional XCB support to PlatformVkLinux
  +- Fix Vulkan black screen on Windows with NVIDIA hardware
  ## v1.9.5
  