ENH: Check if boost is installed to set the default option for SUPERBOOST
Merge branch 'master' of github.com:gofigure2/GoFigure2
Merge branch 'SuperbuildITK'

Conflicts:
	CMake/SuperBuild/External-VTK.cmake
depth peeling enabled
Merge branch 'feature_depthpeeling'
Merge branch 'master' into develop

Conflicts:
	CMake/SuperBuild/External-VTK.cmake
	CMake/SuperBuild/SuperBuild.cmake
	Code/ExternalCode/MegaVTK/vtkRenderingAddOn/vtkViewImage.cxx
	Code/GUI/lib/QGoImageView3D.cxx