New --spiral-vase option to continously raise Z when printing single-walled vases. #997

lib/Slic3r/GUI/Tab.pm

@@ -412,7 +412,7 @@ sub build {
         },
         {
             title => 'Advanced',
-            options => [qw(avoid_crossing_perimeters external_perimeters_first)],
+            options => [qw(avoid_crossing_perimeters external_perimeters_first spiral_vase)],
         },
     ]);