message: Add one release build to appveyor builds.
diff: -configuration:
  - - Debug
  -
  build:
  verbosity: detailed
  environment:
  matrix:
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: Win32
  PYTHON: "C:\\Python38"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: Win32
  PYTHON: "C:\\Python38"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: Win32
  PYTHON: "C:\\Python38"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 11
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 14
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Debug
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 17
  - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Debug
  + GENERATOR_ARCH: x64
  + PYTHON: "C:\\Python38-x64"
  + CXX_STANDARD: 20
  + - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
  + BUILD_TYPE: Release
  GENERATOR_ARCH: x64
  PYTHON: "C:\\Python38-x64"
  CXX_STANDARD: 20
  @@ -59,5 +70,6 @@ build_script:
  -DSAMPLES_BUILD_WITH_LOCAL_VULKAN_HPP=ON
  -DTESTS_BUILD_ONLY_DYNAMIC=ON
  -DTESTS_BUILD_WITH_LOCAL_VULKAN_HPP=ON
  + -DCMAKE_BUILD_TYPE=%BUILD_TYPE%
  -DCMAKE_CXX_STANDARD=%CXX_STANDARD%
  - cmake --build . --config %CONFIGURATION%
  