GLM 1.0.1

Features:

• Added C++17 [[nodiscard]] support

Improvements:

• Enables only warnings as errors while building unit tests
• Added aligned_*vec3 simd support #1245

Fixes:

• Fixed C++ language auto detection build, disable C++98 warnings with Clang #1235, #1231
• Fixed GTX_color_space missing <glm/ext/scalar_constants.hpp> include #1233 #1238
• Fixed EXT_matrix_transform shear implementation #1140 #1182
• Fixed smoothstep SIMD implementation #1222