config.json in trackler-1.0.4.1

- old
+ new

@@ -26,10 +26,11 @@
     "acronym",
     "say",
     "largest-series-product",
     "kindergarten-garden",
     "grade-school",
+    "flatten-array",
     "roman-numerals",
     "space-age",
     "grains",
     "luhn",
     "etl",
@@ -98,28 +99,53 @@
     },
     {
       "slug": "pangram",
       "difficulty": 1,
       "topics": [
+          "control-flow (loops)",
+          "control-flow (if-else statements)",
+          "strings",
+          "algorithms",
+          "filtering",
+          "logic"
       ]
     },
     {
       "slug": "rna-transcription",
       "difficulty": 1,
       "topics": [
+          "control-flow (if-else statements)",
+          "control-flow (loops)",
+          "maps",
+          "strings",
+          "logic",
+          "transforming"
       ]
     },
     {
       "slug": "hamming",
       "difficulty": 1,
       "topics": [
+          "control-flow (if-else statements)",
+          "control-flow (loops)",
+          "sequences",
+          "sets",
+          "strings",
+          "algorithms",
+          "filtering",
+          "logic"
       ]
     },
     {
       "slug": "word-count",
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
+          "strings",
+          "algorithms",
+          "logic",
+          "pattern recognition",
+          "text formatting"
       ]
     },
     {
       "slug": "gigasecond",
       "difficulty": 1,
@@ -216,9 +242,15 @@
       "topics": [
       ]
     },
     {
       "slug": "grade-school",
+      "difficulty": 1,
+      "topics": [
+      ]
+    },
+    {
+      "slug": "flatten-array",
       "difficulty": 1,
       "topics": [
       ]
     },
     {