Add Changelog

Signed-off-by: Ryan Everett <ryan.everett@arm.com>
diff --git a/ChangeLog.d/add-aes-cbc-to-pkcs5-pbes2.txt b/ChangeLog.d/add-aes-cbc-to-pkcs5-pbes2.txt
new file mode 100644
index 0000000..96f48d6
--- /dev/null
+++ b/ChangeLog.d/add-aes-cbc-to-pkcs5-pbes2.txt
@@ -0,0 +1,3 @@
+Features
+   * Add support for using AES-CBC 128, 192, and 256 bit schemes
+     with PKCS#5 PBES2.
\ No newline at end of file