Cleanup after v3.72.0 release

tf-release-bot · TeamCity · commit 04840ed383a0 · 2020-04-22T19:34:58.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,4 @@
+## 3.73.0 (Unreleased)
 ## 3.72.0 (April 22, 2020)
 
 ### Added
