Merge ecdsa_write_signature{,_det}() together
diff --git a/ChangeLog b/ChangeLog
index 4b6d21f..8453794 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,8 @@
   * Support for DTLS 1.0 and 1.2 (RFC 6347).
 
 API Changes
+   * ecdsa_write_signature() gained an addtional md_alg argument and
+     ecdsa_write_signature_det() was deprecated.
    * pk_sign() no longer accepts md_alg == POLARSSL_MD_NONE with ECDSA.
    * Last argument of x509_crt_check_key_usage() changed from int to unsigned.
    * test_ca_list (from certs.h) is renamed to test_cas_pem and is only