Use macOS 10.11 as a minimal version

To support older macOS here is need a set of tweaks against C++ standard library.

CMakeLists.txt

@@ -31,7 +31,7 @@ if(EMSCRIPTEN)
     set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 endif()
 
-set(CMAKE_OSX_DEPLOYMENT_TARGET "10.5")
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.11")
 set(DEPENDENCIES_INSTALL_DIR ${CMAKE_BINARY_DIR}/output)
 set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/output/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/output/lib)