back out mem ref clear (causes support issues). bump rev 3.8.D9

src/geo/slicer.js

@@ -405,7 +405,7 @@ async function sliceZ(z, points, options = {}) {
     }
 
     // free objects to be re-claimed and reduce memory pressure
-    if (true) {
+    if (false) {
         delete rval.groups
         delete rval.lines
         delete rval.clip.m_AllPolys

src/kiri-mode/fdm/slice.js

@@ -349,6 +349,7 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
             widget.shadow = root.shadow;
             return;
         }
+        console.log({ doShadow: widget, slices });
         // create shadow for clipping supports
         let alltops = widget.group
             .filter(w => !w.track.synth) // no supports in shadow

src/main/kiri.js

@@ -15,7 +15,7 @@ gapp.main("main.kiri", [], (root) => {
     const modfns = root.kirimod = ( root.kirimod || [] );
 
     const kiri = root.kiri = {
-        beta: 3808,
+        beta: 3809,
         driver: {}, // driver modules
         load(fn) {
             modfns.push(fn);

src/moto/license.js

@@ -5,7 +5,7 @@
     let terms = {
         COPYRIGHT: "Copyright (C) Stewart Allen <sa@grid.space> - All Rights Reserved",
         LICENSE: "See the license.md file included with the source distribution",
-        VERSION: (is_self ? self : this).debug_version || "3.8.D8"
+        VERSION: (is_self ? self : this).debug_version || "3.8.D9"
     };
 
     if (typeof(module) === 'object') {