Add related challenges

Author: kfahn22

content/videos/challenges/102-2d-water-ripple/index.json

@@ -7,7 +7,7 @@
   "languages": ["Processing"],
   "topics": ["2D water ripple", "cellular automaton", "pixels"],
   "canContribute": true,
-  "relatedChallenges": ["24-perlin-noise-flow-field", "85-the-game-of-life", "103-fire-effect"],
+  "relatedChallenges": ["24-perlin-noise-flow-field", "85-the-game-of-life", "103-fire-effect", "179-wolfram-ca", "180-falling-sand"],
   "timestamps": [
     { "time": "0:00", "title": "Introduction" },
     { "time": "0:54", "title": "2D water ripples algorithm" },

content/videos/challenges/107-sandpiles/index.json

@@ -7,7 +7,7 @@
   "languages": ["p5.js", "Processing"],
   "topics": ["sandpile model", "cellular automaton", "grid"],
   "canContribute": true,
-  "relatedChallenges": ["89-langtons-ant", "85-the-game-of-life", "102-2d-water-ripple"],
+  "relatedChallenges": ["89-langtons-ant", "85-the-game-of-life", "102-2d-water-ripple", "180-falling-sand"],
   "timestamps": [
     { "time": "0:00", "title": "Introducing today's topic" },
     { "time": "1:02", "title": "The \"sandpile\" algorithm" },

content/videos/challenges/119-binary-to-decimal-conversion/index.json

@@ -7,7 +7,7 @@
   "languages": ["JavaScript", "p5.js"],
   "topics": ["binary numbers", "base conversion", "math"],
   "canContribute": true,
-  "relatedChallenges": ["117-seven-segment-display", "120-bit-shifting"],
+  "relatedChallenges": ["117-seven-segment-display", "120-bit-shifting", "179-wolfram-ca"],
   "timestamps": [
     { "time": "0:00", "title": "Introduction" },
     { "time": "1:08", "title": "Understanding the base of a number system" },

content/videos/challenges/85-the-game-of-life/index.json

@@ -7,7 +7,7 @@
   "languages": ["JavaScript", "p5.js"],
   "topics": ["Conway's Game of Life", "cellular automaton", "modulo operator"],
   "canContribute": true,
-  "relatedChallenges": ["89-langtons-ant", "107-sandpiles", "102-2d-water-ripple"],
+  "relatedChallenges": ["89-langtons-ant", "107-sandpiles", "102-2d-water-ripple", "179-wolfram-ca", "180-falling-sand"],
   "timestamps": [
     { "time": "0:00", "title": "Introduction" },
     { "time": "2:00", "title": "Generations" },

content/videos/pixels/painting-with-pixels/index.json

@@ -13,7 +13,9 @@
     "78-simple-particle-system",
     "90-dithering",
     "102-2d-water-ripple",
-    "132-fluid-simulation"
+    "132-fluid-simulation",
+    "179-wolfram-ca",
+    "180-falling-sand"
   ],
   "timestamps": [
     {