fixed two issues when forking processes while single-stepping

* suppress "exit" context when forking a process while single-stepping,
this avoids a false "reporter didn't report" error message
* avoid coloring the block-highlight when re-coloring a syntax element,
this prevents highlighted blocks inside LAUNCH statements to expand
when repeatedly single-stepped.

blocks.js

@@ -148,7 +148,7 @@ CustomCommandBlockMorph, SymbolMorph, ToggleButtonMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2017-October-17';
+modules.blocks = '2017-November-16';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -737,7 +737,8 @@ SyntaxElementMorph.prototype.setColor = function (aColor, silently) {
             this.color = aColor;
             if (!silently) {this.drawNew(); }
             this.children.forEach(function (child) {
-                if (!silently || child instanceof TemplateSlotMorph) {
+                if ((!silently || child instanceof TemplateSlotMorph) &&
+                		!(child instanceof BlockHighlightMorph)) {
                     child.drawNew();
                     child.changed();
                 }

gui.js

@@ -75,7 +75,7 @@ isRetinaSupported, SliderMorph, Animation*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2017-November-15';
+modules.gui = '2017-November-16';
 
 // Declarations
 
@@ -3386,7 +3386,7 @@ IDE_Morph.prototype.aboutSnap = function () {
         module, btn1, btn2, btn3, btn4, licenseBtn, translatorsBtn,
         world = this.world();
 
-    aboutTxt = 'Snap! 4.1.0.3\nBuild Your Own Blocks\n\n'
+    aboutTxt = 'Snap! 4.1.0.4\nBuild Your Own Blocks\n\n'
         + 'Copyright \u24B8 2017 Jens M\u00F6nig and '
         + 'Brian Harvey\n'
         + 'jens@moenig.org, bh@cs.berkeley.edu\n\n'

history.txt

@@ -3795,3 +3795,10 @@ Fixes:
 * new Audio Comp library for Guzdial-style sound samples fun
 
 === v4.1.0.3 maintenance release ===
+
+171116
+------
+* Threads: suppress "exit" context when forking a process while single-stepping, this avoids a false "reporter didn't report" error message
+* Blocks: avoid coloring the block-highlight when re-coloring a syntax element, this prevents highlighted blocks inside LAUNCH statements to expand when repeatedly single-stepped.
+
+=== v4.1.0.4 maintenance release ===

threads.js

@@ -61,7 +61,7 @@ StageMorph, SpriteMorph, StagePrompterMorph, Note, modules, isString, copy,
 isNil, WatcherMorph, List, ListWatcherMorph, alert, console, TableMorph,
 TableFrameMorph, ColorSlotMorph, isSnapObject*/
 
-modules.threads = '2017-October-20';
+modules.threads = '2017-November-16';
 
 var ThreadManager;
 var Process;
@@ -1166,12 +1166,12 @@ Process.prototype.fork = function (context, args) {
         stage = this.homeContext.receiver.parentThatIsA(StageMorph);
     proc.instrument = this.instrument;
     proc.receiver = this.receiver;
-    proc.initializeFor(context, args);
+    proc.initializeFor(context, args, this.enableSingleStepping);
     // proc.pushContext('doYield');
     stage.threads.processes.push(proc);
 };
 
-Process.prototype.initializeFor = function (context, args) {
+Process.prototype.initializeFor = function (context, args, ignoreExit) {
     // used by Process.fork() and global invoke()
     if (context.isContinuation) {
         throw new Error(
@@ -1243,14 +1243,16 @@ Process.prototype.initializeFor = function (context, args) {
         // insert a tagged exit context
         // which "report" can catch later
         // needed for invoke() situations
-        exit = new Context(
-            runnable.parentContext,
-            'expectReport',
-            outer,
-            outer.receiver
-        );
-        exit.tag = 'exit';
-        runnable.parentContext = exit;
+        if (!ignoreExit) { // when single stepping LAUNCH
+	        exit = new Context(
+    	        runnable.parentContext,
+        	    'expectReport',
+            	outer,
+            	outer.receiver
+        	);
+        	exit.tag = 'exit';
+        	runnable.parentContext = exit;
+    	}
     }
 
     this.homeContext = new Context(); // context.outerContext;