Add sdlpy wrapping functions

Update ricsdl version requirement for notification support

Issue-ID: RIC-662

Signed-off-by: Youngcheol Jang <yc999.jang@samsung.com>
Change-Id: Ice8c68b25a5f4f7e5a9e5426ebc16e5fa8cc7b82
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index 1b82c2d..b2f0dcc 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -11,6 +11,11 @@
 and this project adheres to `Semantic Versioning <http://semver.org/>`__.
 
 
+[1.6.0] - 2020-10-23
+--------------------
+* Add SDL wrapping API (`RIC-659 <https://jira.o-ran-sc.org/browse/RIC-659>`_)
+
+
 [1.5.0] - 2020-07-10
 --------------------
 * Add Metrics API (`RIC-381 <https://jira.o-ran-sc.org/browse/RIC-381>`_)