save and restore "log pen trails" setting in project file

HISTORY.md

@@ -12,6 +12,9 @@
 * **Translation Updates:**
     * German
 
+### 2019-12-09
+* store: save and restore "log pen trails" setting in project file
+
 ### 2019-12-08
 * lists: support null-serialization in list-csv conversions
 

snap.html

@@ -19,7 +19,7 @@
         <script type="text/javascript" src="src/video.js?version=2019-06-27"></script>
         <script type="text/javascript" src="src/maps.js?version=2019-10-28"></script>
         <script type="text/javascript" src="src/xml.js?version=2019-06-27"></script>
-        <script type="text/javascript" src="src/store.js?version=2019-08-08"></script>
+        <script type="text/javascript" src="src/store.js?version=2019-12-09"></script>
         <script type="text/javascript" src="src/locale.js?version=2019-12-03"></script>
         <script type="text/javascript" src="src/cloud.js?version=2019-10-09"></script>
         <script type="text/javascript" src="src/sha512.js?version=2019-06-27"></script>

src/store.js

@@ -61,7 +61,7 @@ normalizeCanvas, contains*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.store = '2019-August-08';
+modules.store = '2019-December-09';
 
 
 // XML_Serializer ///////////////////////////////////////////////////////
@@ -255,7 +255,7 @@ SnapSerializer.uber = XML_Serializer.prototype;
 
 // SnapSerializer constants:
 
-SnapSerializer.prototype.app = 'Snap! 5.1, http://snap.berkeley.edu';
+SnapSerializer.prototype.app = 'Snap! 5.4, http://snap.berkeley.edu';
 
 SnapSerializer.prototype.thumbnailSize = new Point(160, 120);
 
@@ -404,6 +404,10 @@ SnapSerializer.prototype.rawLoadProjectModel = function (xmlNode, remixID) {
     if (model.stage.attributes.pan) {
         project.stage.pan = +model.stage.attributes.pan;
     }
+    if (model.stage.attributes.penlog) {
+        StageMorph.prototype.enablePenLogging =
+            (model.stage.attributes.penlog === 'true');
+    }
 
     model.pentrails = model.stage.childNamed('pentrails');
     if (model.pentrails) {
@@ -1727,6 +1731,7 @@ StageMorph.prototype.toXML = function (serializer) {
             '<thumbnail>$</thumbnail>' +
             '<stage name="@" width="@" height="@" ' +
             'costume="@" color="@,@,@,@" tempo="@" threadsafe="@" ' +
+            'penlog="@" ' +
             '%' +
             'volume="@" ' +
             'pan="@" ' +
@@ -1765,6 +1770,7 @@ StageMorph.prototype.toXML = function (serializer) {
         this.color.a,
         this.getTempo(),
         this.isThreadSafe,
+        this.enablePenLogging,
         this.instrument ?
                 ' instrument="' + parseInt(this.instrument) + '" ' : '',
         this.volume,