Add message file

Author: naokazuterada

messages.json

@@ -24,5 +24,13 @@
   "3.0.0": "messages/3.0.0.md",
   "3.0.1": "messages/3.0.1.md",
   "3.0.2": "messages/3.0.2.md",
-  "3.0.3": "messages/3.0.3.md"
+  "3.0.3": "messages/3.0.3.md",
+  "3.0.4": "messages/3.0.4.md",
+  "3.0.5": "messages/3.0.5.md",
+  "4.0.0": "messages/4.0.0.md",
+  "4.0.1": "messages/4.0.1.md",
+  "4.0.2": "messages/4.0.2.md",
+  "4.1.0": "messages/4.1.0.md",
+  "4.1.1": "messages/4.1.1.md",
+  "4.1.2": "messages/4.1.2.md"
 }

messages/4.1.2.md

@@ -0,0 +1,5 @@
+# MarkdownTOC - 4.1.2
+
+## Changes
+
+- Add support for `.mdx` files Ref: [#160](https://github.com/naokazuterada/MarkdownTOC/issues/160)