Merge branch 'develop'

CMakeLists.txt

cmake/FindOSPRay.cmake

cmake/FindTBB.cmake

cmake/FindZeroMQ.cmake

docs/presets.json

docs/test_presets.json

include/pli_vis/cuda/global_tractography.h

include/pli_vis/cuda/odf_field.h

include/pli_vis/cuda/pt/cartesian_locator.h

include/pli_vis/cuda/pt/runge_kutta_4_integrator.h

include/pli_vis/cuda/pt/tracer.h

include/pli_vis/cuda/pt/trilinear_interpolator.h

include/pli_vis/cuda/utility/convert.h

include/pli_vis/cuda/zernike/disk.h

include/pli_vis/cuda/zernike/launch.h

include/pli_vis/cuda/zernike/zernike.h

include/pli_vis/third_party/cppzmq/zmq.hpp

include/pli_vis/third_party/cppzmq/zmq_addon.hpp

include/pli_vis/third_party/json/json.hpp

include/pli_vis/third_party/qwt/qwt.h