Disable appveyor build test unless Visual Studio 2015 is capable to build with `constexpr` for function pointer
Disable appveyor build test unless Visual Studio 2015 is capable to build with `constexpr` for function pointer

dartsim/dart,dartsim/dart,axeisghost/DART6motionBlur,dartsim/dart,axeisghost/DART6motionBlur,dartsim/dart,dartsim/dart,axeisghost/DART6motionBlur