12.2a: folders duplicate with their contents, folder opacity, format version 8, View > Snap (Compositor 1.1.5–1.1.6)

src/UI/NativeLayerList.h

@@ -124,6 +124,7 @@ public:
     void beginRenaming();
     bool isOnControl(QPoint point) const;
     bool isRenaming() const { return m_renaming; }
+    bool isGroup() const { return m_isGroup; }
     QUuid layerID() const { return m_layerID; }
     LayerThumbnailButton &thumbnail() { return *m_thumbnail; }
     LayerThumbnailButton &maskThumbnail() { return *m_maskThumbnail; }