made "When I am stopped" scripts atomic

so you can use loops in them without having to place them inside a WARP block.

history.txt

@@ -4177,6 +4177,10 @@ in development:
 * new "webcam snap" reporter in the "Pixels" library
 * new "record" reporter in the "Audio Comp" library
 
+180621
+------
+* Threads, Objects: made "When I am stopped" scripts atomic, so you can use loops
+
 
 === v4.2 major release (draft) ===
 

objects.js

@@ -83,7 +83,7 @@ BlockEditorMorph, BlockDialogMorph, PrototypeHatBlockMorph, localize,
 TableMorph, TableFrameMorph, normalizeCanvas, BooleanSlotMorph, HandleMorph,
 AlignmentMorph, Process, XML_Element, VectorPaintEditorMorph*/
 
-modules.objects = '2018-June-11';
+modules.objects = '2018-June-21';
 
 var SpriteMorph;
 var StageMorph;
@@ -4874,7 +4874,8 @@ SpriteMorph.prototype.receiveUserInteraction = function (
             null, // export result
             null, // callback
             null, // is clicked
-            rightAway // immediately
+            rightAway, // immediately
+            interaction === 'stopped' // atomic
         ));
     });
     return procs;

threads.js

@@ -62,7 +62,7 @@ StageMorph, SpriteMorph, StagePrompterMorph, Note, modules, isString, copy,
 isNil, WatcherMorph, List, ListWatcherMorph, alert, console, TableMorph,
 TableFrameMorph, ColorSlotMorph, isSnapObject*/
 
-modules.threads = '2018-June-18';
+modules.threads = '2018-June-21';
 
 var ThreadManager;
 var Process;
@@ -205,7 +205,8 @@ ThreadManager.prototype.startProcess = function (
     exportResult, // bool
     callback,
     isClicked,
-    rightAway
+    rightAway,
+    atomic // special option used (only) for "onStop" scripts
 ) {
     var top = block.topBlock(),
         active = this.findProcess(top, receiver),
@@ -221,6 +222,7 @@ ThreadManager.prototype.startProcess = function (
     newProc = new Process(top, receiver, callback, isClicked);
     newProc.exportResult = exportResult;
     newProc.isClicked = isClicked || false;
+    newProc.isAtomic = atomic || false;
 
     // show a highlight around the running stack
     // if there are more than one active processes