message: Removed exclamation marks from comment
diff: @@ -135,7 +135,7 @@ public:
  model_view_matrix, projection_matrix));
  // Note: if mesh.colors.empty() (in case of shape-only model!), then the vertex colour is no
  // longer set to gray. But we don't want that here, maybe we only want texturing, then we don't
  - // need vertex-colours at all! We can do it in a custom VertexShader if needed!
  + // need vertex-colours at all. We can do it in a custom VertexShader if needed.
  }
  // All vertices are in clip-space now. Prepare the rasterisation stage:
  