Add ChangeLog entry for new features.
Fixes
@@ -2,6 +2,11 @@ mbed TLS ChangeLog (Sorted per branch, date)
= mbed TLS x.x.x branch released xxxx-xx-xx
+Features
+ * Add new crypto primitives from RFC 7539: stream cipher Chacha20, one-time
+ authenticator Poly1305 and AEAD construct Chacha20-Poly1305. Contributed by
+ Daniel King (#485).
+
API Changes
* Extend the platform module with a util component that contains
functionality shared by multiple Mbed TLS modules. At this stage
