CHANGELOG.md in prawn-emoji-2.1.1 vs CHANGELOG.md in prawn-emoji-3.0.0

@@ -1,4 +1,18 @@
+## 3.0.0
+
+Big Changes:
+
+ * Switch emoji to [Twemoji](https://github.com/twitter/twemoji) v12.04 from EmojiOne v2.0
+   * See [#23 Switch to Twemoji](https://github.com/hidakatsuya/prawn-emoji/issues/23) for further details
+ * Support joined emojis like 👨‍👨‍👦 or 1️⃣
+   * See [#24 Joined emojis like 👨‍👨‍👦 or 1️⃣ are not drawn](https://github.com/hidakatsuya/prawn-emoji/issues/24) for further details
+
+Breaking Changes:
+
+ * Drop support ruby2.1 and 2.2, 2.3
+ * prawn-emoji requires Prawn 2.2 (Drop support Prawn 2.1)
+
 ## 2.1.1
 
 ### Bug Fixes:
 
  * Fixed: A text including multiple emojis are broken #19