message: CMake: 3.8+ is Sufficient
  The current CMake scripts depend on CMake 3.8+.
  This allows us to remove previous work-arounds.
diff: @@ -53,8 +53,8 @@ target_include_directories(
  $<INSTALL_INTERFACE:include>
  )
  -## add debug view defintion file for msvc (natvis) [cmake <= 3.2.2 does not support export of source files]
  -if (MSVC AND CMAKE_VERSION VERSION_GREATER "3.2.2")
  +## add debug view defintion file for msvc (natvis)
  +if (MSVC)
  set(NLOHMANN_ADD_NATVIS TRUE)
  set(NLOHMANN_NATVIS_FILE "nlohmann_json.natvis")
  target_sources(
  