Merge branch 'release/v17.12.0'

.gitlab-ci.yml

CMakeLists.txt

cmake/Testing.cmake

cmake/cppcheck.cmake

cmake/cpplint.cmake

cmake/suppress_warnings.hpp.in

conanfile.py

demos/viewer/src/controller_behavior.cpp

demos/viewer/src/controller_behavior.hpp

demos/viewer/src/navigation_behavior.cpp

demos/viewer/src/navigation_behavior.hpp

demos/viewer/src/viewer.cpp

library/CMakeLists.txt

library/phx/assimp_loader.cpp

library/phx/assimp_model_loader.cpp

library/phx/assimp_model_loader.hpp

library/phx/blit_pass.cpp

library/phx/blit_pass.hpp

library/phx/clear_pass.cpp

library/phx/clear_pass.hpp