DataArray, vertex and cell attributes, and render delegate improvements

Examples/CollisionDetection/Box.cpp

Examples/CollisionDetection/BunnyMesh.cpp

...etection/ManualCDWithOctree/ManualCDWithOctreeExample.cpp

Examples/CollisionDetection/Sphere.cpp

Examples/CollisionDetection/Triangle.cpp

Examples/CreateEnclosingMesh/CreateEnclosingMesh.cpp

Examples/DebugRendering/DebugRenderingExample.cpp

Examples/DeformableBody/DeformableBodyExample.cpp

Examples/GeometryProcessing/GeometryProcessingExample.cpp

Examples/GeometryTransforms/GeometryTransformsExample.cpp

...nteractions/SPH-Obj-SDF/SPH-Obj-SDFInteractionExample.cpp

Examples/Levelset/levelsetExample.cpp

Examples/MultipleScenes/multipleScenes.cpp

Examples/Octree/BunnyMesh.cpp

Examples/Octree/OctreeExample.cpp

Examples/OpenVRController/OpenVRControllerExample.cpp

Examples/PBD/PBDCloth/pbdClothExample.cpp

...ionMultipleObjects/PBDCollisionMultipleObjectsExample.cpp

...BD/PBDCollisionOneObject/PBDCollisionOneObjectExample.cpp

...ples/PBD/PBDCollisionStairs/PBDCollisionStairsExample.cpp