allow fill without trace

js/kiri-slice.js

@@ -472,6 +472,8 @@ var gs_kiri_slice = exports;
                             });
                     }
                 }
+            } else {
+                last = [top.poly];
             }
 
             // generate fill offset poly set from last offset to top.inner

notes.md

@@ -16,7 +16,6 @@
 # FDM todo
 
 * apply finish speed to exposed top and underside flat areas
-* allow infill without shells by falling back to outline
 * adaptive column to compensate for fine or layers that finish too quickly and melt
 * store/recover grid:print target against printer selected in device
 * expand internal supporting flats