Changelog.md in argon2-2.0.3 vs Changelog.md in argon2-2.1.0

@@ -1,4 +1,8 @@
+## v2.1.0: 2021-04-09
+- Introduce RBS types
+- Expose p parameter
+
 ## v2.0.3: 2021-01-02
 - Address potential memory leak. Unlikely to be exploitable.
 
 ## v2.0.0: 2019-01-06
 - Defaults to Argon2id for new hashes