Updating CHANGELOG for 0.22.0 release.
diff --git a/CHANGELOG b/CHANGELOG
index 8dd9ee9..4c3608c 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+Aurora 0.22.0
+--------------------------------------------------------------------------------
+
 Aurora 0.21.0
 --------------------------------------------------------------------------------