docs(CHANGELOG): add release details

Author: sanjayaksaxena

CHANGELOG.md

@@ -1,3 +1,8 @@
+# [Added map()](https://github.com/winkjs/wink-nlp/releases/tag/2.4.0)
+## Version 2.4.0 June 30, 2025
+
+### ✨ Features
+- Now map tokens easily; for example: `doc.tokens().map(token => ({token: token.out(), pos: token.out(its.pos)}))`. Thanks to @snowyu effort! 👏
 # [Operational update](https://github.com/winkjs/wink-nlp/releases/tag/2.3.2)
 ## Version 2.3.2 November 30, 2024