From d9f3db5081a4306520cb3c3208564d3c923fbf0a Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Thu, 4 Oct 2018 15:29:30 +0100
Subject: [PATCH] Newsfile

---
 changelog.d/4006.misc | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog.d/4006.misc

diff --git a/changelog.d/4006.misc b/changelog.d/4006.misc
new file mode 100644
index 000000000..35ffa1c2d
--- /dev/null
+++ b/changelog.d/4006.misc
@@ -0,0 +1 @@
+Delete unreferenced state groups during history purge