Update Changelog

Author: graemenail

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 
 ### Added
+- oneDNN is used for GEMM on CPU.
 
 ### Fixed
 - Multi-loss casts type to first loss-type before accumulation (aborted before due to missing cast)
@@ -29,6 +30,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Faster LSH top-k search on CPU
 - Updated intgemm to the latest upstream version
 - Parameters in npz files are no longer implicitly assumed to be row-ordered. Non row-ordered parameters will result in an abort
+- MKL is no longer used as a backend for the CPU.
 
 ## [1.11.0] - 2022-02-08