remove all clones when the Green Flag is clicked

HISTORY.md

@@ -17,6 +17,7 @@
     * new drop-down options for sprite-layer control ("GO TO front/back")
     * "loop arrow" symbol for primitive loops, also available for custom blocks
     * optimized in-project storage of atomic-data lists (more efficient, less space) 
+    * remove all clones when the Green Flag is clicked
 * Notable Fixes:
     * "relabel" blocks with translated drop-down choices
     * transforming arrayed to linked lists without loosing the last element
@@ -29,6 +30,7 @@
     * German
 
 ### 2019-01-22
+* Objects: Remove all clones when the Green Flag is clicked
 * Blocks: adjust label row below C-Slot to accomodate loop icon, if any
 * updated iteration-composition library blocks with new loop-arrow symbols
 * updated list-utilities library blocks with new loop-arrow symbols

snap.html

@@ -8,7 +8,7 @@
         <script type="text/javascript" src="src/widgets.js?version=2018-10-02"></script>
         <script type="text/javascript" src="src/blocks.js?version=2019-01-22"></script>
         <script type="text/javascript" src="src/threads.js?version=2019-01-12"></script>
-        <script type="text/javascript" src="src/objects.js?version=2019-01-21"></script>
+        <script type="text/javascript" src="src/objects.js?version=2019-01-22"></script>
         <script type="text/javascript" src="src/gui.js?version=2019-01-17"></script>
         <script type="text/javascript" src="src/paint.js?version=2018-10-02"></script>
         <script type="text/javascript" src="src/lists.js?version=2019-01-10"></script>

src/objects.js

@@ -83,7 +83,7 @@ BlockEditorMorph, BlockDialogMorph, PrototypeHatBlockMorph, localize,
 TableMorph, TableFrameMorph, normalizeCanvas, BooleanSlotMorph, HandleMorph,
 AlignmentMorph, Process, XML_Element, VectorPaintEditorMorph*/
 
-modules.objects = '2019-January-21';
+modules.objects = '2019-January-22';
 
 var SpriteMorph;
 var StageMorph;
@@ -6896,6 +6896,7 @@ StageMorph.prototype.fireGreenFlagEvent = function () {
         ide = this.parentThatIsA(IDE_Morph),
         myself = this;
 
+    this.removeAllClones();
     this.children.concat(this).forEach(function (morph) {
         if (isSnapObject(morph)) {
             morph.allHatBlocksFor('__shout__go__').forEach(function (block) {