Merge branch 'master' into dev

CMakeLists.txt

examples/CMakeLists.txt

examples/tracking/cpu_track_conf.json

examples/tracking/gpu_track.cpp

examples/tracking/track.cpp

examples/tracking/track_conf.json

include/ball_tracking/cuda/tracker.hpp

include/ball_tracking/tracker.hpp

src/cuda/tracker.cpp

src/tracker.cpp