Merge branch 'dev2' of https://github.com/prusa3d/Slic3r into dev_native

src/libslic3r/Model.cpp

@@ -1004,6 +1004,11 @@ const TriangleMesh& ModelVolume::get_convex_hull() const
     return m_convex_hull;
 }
 
+TriangleMesh& ModelVolume::get_convex_hull()
+{
+    return m_convex_hull;
+}
+
 ModelVolume::Type ModelVolume::type_from_string(const std::string &s)
 {
     // Legacy support

src/libslic3r/Model.hpp

@@ -198,6 +198,7 @@ public:
     
     void                calculate_convex_hull();
     const TriangleMesh& get_convex_hull() const;
+    TriangleMesh& get_convex_hull();
 
     // Helpers for loading / storing into AMF / 3MF files.
     static Type         type_from_string(const std::string &s);