changelog for byteslike (#4712)

* changelog for byteslike

* bertter prose
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 307f155..bf4278c 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -13,6 +13,9 @@
   well. If you still need this deprecated path please install cryptography
   with the ``idna`` extra: ``pip install cryptography[idna]``.
 * **BACKWARDS INCOMPATIBLE:** The minimum supported PyPy version is now 5.4.
+* Numerous classes and functions have been updated to allow :term:`bytes-like`
+  types for keying material and passwords, including symmetric algorithms, AEAD
+  ciphers, KDFs, loading asymmetric keys, and one time password classes.
 * Added support for :class:`~cryptography.hazmat.primitives.hashes.SHA512_224`
   and :class:`~cryptography.hazmat.primitives.hashes.SHA512_256` when using
   OpenSSL 1.1.1.