freeze change log for release 0.18.0

zacharyburnett · zacharyburnett · commit 0707e62f655d · 2023-11-06T15:04:19.000-05:00
diff --git a/CHANGES.rst b/CHANGES.rst
@@ -1,4 +1,9 @@
-0.17.2 (unreleased)
+0.18.1 (unreleased)
+-------------------
+
+- 
+
+0.18.0 (2023-11-06)
 -------------------
 
 - Added Slope and Error to Dark reference schema. [#323]
