Add changelog entries about the crypto submodule Add a changelog entry for an already-released version to indicate when the crypto submodule became mandatory. Add a changelog entry for the removal of the crypto submodule. 
diff --git a/ChangeLog b/ChangeLog index 3f2f593..6cb40ed 100644 --- a/ChangeLog +++ b/ChangeLog 
@@ -6,6 +6,10 @@  * Deprecate MBEDTLS_SSL_HW_RECORD_ACCEL that enables function hooks in the  SSL module for hardware acceleration of individual records.   +Changes + * Mbed Crypto is no longer a Git submodule. The crypto part of the library + is back directly in the present repository. +  = mbed TLS 2.21.0 branch released 2020-02-20    New deprecations @@ -273,6 +277,9 @@  * Extended .gitignore to ignore Visual Studio artifacts. Fixed by ConfusedSushi.  * Adds fuzz targets, especially for continuous fuzzing with OSS-Fuzz.  Contributed by Philippe Antoine (Catena cyber). + * Remove the crypto part of the library from Mbed TLS. The crypto + code and tests are now only available via Mbed Crypto, which + Mbed TLS references as a Git submodule.    = mbed TLS 2.18.1 branch released 2019-07-12