Update to crystal 0.25.1 and send caption.

src/joann-pupper-bot/reddit.cr

@@ -11,6 +11,7 @@ end
 
 def filter_reddit_json(json, completed)
     json["data"]["children"]
+        .as_a
         .map(&.["data"])
         .select do |it| 
             url = it["url"].as_s
@@ -22,5 +23,5 @@ end
 def get_reddit_post(subreddit, completed)
     json = get_reddit_json(subreddit)
     post = json.try { |json| filter_reddit_json(json, completed).first? }
-    post.try { |post| completed.push(post["name"].as_s); post["url"].as_s }
+    post.try { |post| completed.push(post["name"].as_s); { post["url"].as_s, post["title"].as_s } }
 end