pwa versioning & cache-busting mechanism

HISTORY.md

@@ -50,6 +50,7 @@
 ### 2021-10-27
 * included bbt extensions
 * updated service worker to cache bbtSnapExtension.js
+* pwa versioning & cache-busting mechanism 
 
 ### 2021-10-26
 * objects: don't show codification and js-func blocks in search results unless enabled

snap.html

@@ -20,7 +20,7 @@
         <script src="src/threads.js?version=2021-10-22"></script>
         <script src="src/objects.js?version=2021-10-26"></script>
         <script src="src/scenes.js?version=2021-10-12"></script>
-        <script src="src/gui.js?version=2021-10-26-c"></script>
+        <script src="src/gui.js?version=2021-10-27"></script>
         <script src="src/paint.js?version=2021-07-05"></script>
         <script src="src/lists.js?version=2021-07-19"></script>
         <script src="src/byob.js?version=2021-10-25"></script>

src/gui.js

@@ -85,7 +85,7 @@ Animation, BoxMorph, BlockDialogMorph, RingMorph, Project, ZERO, BLACK*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.gui = '2021-October-26';
+modules.gui = '2021-October-27';
 
 // Declarations
 
@@ -4704,7 +4704,7 @@ IDE_Morph.prototype.aboutSnap = function () {
         module, btn1, btn2, btn3, btn4, licenseBtn, translatorsBtn,
         world = this.world();
 
-    aboutTxt = 'Snap! 7 - dev alpha 4 -\nBuild Your Own Blocks\n\n'
+    aboutTxt = 'Snap! 7 - dev211027 -\nBuild Your Own Blocks\n\n'
         + 'Copyright \u24B8 2008-2021 Jens M\u00F6nig and '
         + 'Brian Harvey\n'
         + 'jens@moenig.org, bh@cs.berkeley.edu\n\n'

sw.js

@@ -1,4 +1,4 @@
-var snapVersion = '7-dev-alpha4'
+var snapVersion = '7-dev211027'
 
 var cacheName = 'snap-pwa',
     filesToCache = [