tracks/sml/config.json in trackler-2.2.1.15 vs tracks/sml/config.json in trackler-2.2.1.16

@@ -3,10 +3,30 @@
   "checklist_issue": 8,
   "active": false,
   "test_pattern": "test[.]sml$",
   "exercises": [
     {
+      "uuid": "4450455d-0786-6f80-7672-48368a115df16e0aa7e",
+      "slug": "hello-world",
+      "core": true,
+      "unlocked_by": null,
+      "difficulty": 1,
+      "topics": [
+
+      ]
+    },
+    {
+      "uuid": "9d8e76f1-0e85-a280-b779-16335f29d1a96ce3a72",
+      "slug": "bob",
+      "core": false,
+      "unlocked_by": null,
+      "difficulty": 1,
+      "topics": [
+
+      ]
+    },
+    {
       "uuid": "333c2cb9-f03c-473c-9eeb-096072a321b2",
       "slug": "accumulate",
       "core": false,
       "unlocked_by": null,
       "difficulty": 1,
@@ -65,9 +85,19 @@
       ]
     },
     {
       "uuid": "cfd7a0bc-4b94-402a-9e8e-d81cd4ddecfd",
       "slug": "nth-prime",
+      "core": false,
+      "unlocked_by": null,
+      "difficulty": 1,
+      "topics": [
+
+      ]
+    },
+    {
+      "uuid": "b6713a74-08d5-4480-6524-f9dbf5cf2563d2b2a91",
+      "slug": "difference-of-squares",
       "core": false,
       "unlocked_by": null,
       "difficulty": 1,
       "topics": [