docs(changelog): add notice for release-notes on Github (#938)

max-wittig · bufferoverflow · commit de98e572b003 · 2019-11-19T13:16:42.000+01:00
diff --git a/ChangeLog.rst b/ChangeLog.rst
@@ -1,5 +1,7 @@
-ChangeLog
-=========
+ChangeLog - Moved to GitHub releases
+====================================
+
+The changes of newer versions can be found at https://github.com/python-gitlab/python-gitlab/releases
 
 Version 1.9.0_ - 2019-06-19
 ---------------------------
