Merge branch 'master' of https://github.com/prusa3d/Slic3r into time_estimate

xs/xsp/GCode.xsp

@@ -31,7 +31,7 @@
             try {
                 THIS->do_export(print, path, preview_data);
             } catch (std::exception& e) {
-                croak(e.what());
+                croak("%s\n", e.what());
             }
         %};
 

xs/xsp/GUI_3DScene.xsp

@@ -190,18 +190,6 @@ remove_all_canvases()
     CODE:
         _3DScene::remove_all_canvases();
 
-void
-reset_current_canvas()
-    CODE:
-        _3DScene::reset_current_canvas();
-
-void
-set_active(canvas, active)
-        SV   *canvas;
-        bool active;
-    CODE:
-        _3DScene::set_active((wxGLCanvas*)wxPli_sv_2_object(aTHX_ canvas, "Wx::GLCanvas"), active);
-
 void
 set_as_dirty(canvas)
         SV *canvas;