tracks/scala/config.json in trackler-2.0.6.6 vs tracks/scala/config.json in trackler-2.0.6.7

@@ -365,16 +365,24 @@
 		},
     {
       "slug": "saddle-points",
       "difficulty": 1,
       "topics": [
+        "Matrices",
+        "Lists",
+        "Sets",
+        "Tuples"
       ]
 		},
     {
       "slug": "say",
       "difficulty": 1,
       "topics": [
+        "Strings",
+        "Transforming",
+        "Text formatting",
+        "Optional values"
       ]
 		},
     {
       "slug": "alphametics",
       "difficulty": 1,
@@ -383,15 +391,21 @@
 		},
     {
       "slug": "secret-handshake",
       "difficulty": 1,
       "topics": [
+         "Lists",
+         "Strings",
+         "Bitwise operations"
       ]
 		},
     {
       "slug": "series",
       "difficulty": 1,
       "topics": [
+        "Strings",
+        "Sequences",
+        "Transforming"
       ]
 		},
     {
       "slug": "sieve",
       "difficulty": 1,