added "id" option to hyperizable monadic function reporter

snap.html

@@ -10,7 +10,7 @@
         <script src="src/blocks.js?version=2020-06-24"></script>
         <script src="src/threads.js?version=2020-06-24"></script>
         <script src="src/objects.js?version=2020-06-20"></script>
-        <script src="src/gui.js?version=2020-06-22"></script>
+        <script src="src/gui.js?version=2020-06-24"></script>
         <script src="src/paint.js?version=2020-05-17"></script>
         <script src="src/lists.js?version=2020-05-18"></script>
         <script src="src/byob.js?version=2020-06-08"></script>

src/blocks.js

@@ -1326,6 +1326,7 @@ SyntaxElementMorph.prototype.labelPart = function (spec) {
                     'e^' : ['e^'],
                     '10^' : ['10^'],
                     '2^' : ['2^'],
+                    id: ['id']
                 },
                 true
             );

src/threads.js

@@ -3984,6 +3984,8 @@ Process.prototype.reportMonadic = function (fname, n) {
     case '2^':
         result = Math.pow(2, x);
         break;
+    case 'id':
+        return n;
     default:
         nop();
     }