message: DOC: document internal struct members for clarity
diff: @@ -36,8 +36,8 @@ namespace bvh
  struct BVH
  {
  - Vec<float32, 4> *m_inner_nodes;
  - int32 *m_leaf_nodes;
  + Vec<float32, 4> *m_inner_nodes; // BVH bins including leafs
  + int32 *m_leaf_nodes; // leaf data
  AABB m_bounds;
  BVH()
  